#include <switch.h>
#include <switch_private.h>
#include <switch_stun.h>
#include <fspr_network_io.h>
#include <srtp.h>
#include <srtp_priv.h>
#include <switch_ssl.h>
#include <switch_jitterbuffer.h>

Include dependency graph for switch_rtp.c:

Data Structures
struct	rtp_msg_t

struct	rtcp_fir_t

struct	switch_rtcp_sdes_unit_s

struct	rtcp_tmmbx_t

struct	switch_rtcp_ext_hdr_t

struct	rtcp_ext_msg_t

struct	rtcp_msg_t

struct	switch_rtp_vad_data

struct	switch_rtp_rfc2833_data

struct	switch_rtp_ice_t

struct	switch_dtls_s

struct	ts_normalize_s

struct	switch_rtp

struct	switch_rtcp_report_block

struct	switch_rtcp_sr_head

struct	switch_rtcp_sender_info

struct	switch_rtcp_sender_report

struct	switch_rtcp_receiver_report

struct	packet_list_s

struct	dtls_bio_filter

Macros
#define	DEBUG_ESTIMATORS_

#define	JITTER_LEAD_FRAMES 10

#define	READ_INC(rtp_session) switch_mutex_lock(rtp_session->read_mutex); rtp_session->reading++

#define	READ_DEC(rtp_session) rtp_session->reading--; switch_mutex_unlock(rtp_session->read_mutex)

#define	WRITE_INC(rtp_session) switch_mutex_lock(rtp_session->write_mutex); rtp_session->writing++

#define	WRITE_DEC(rtp_session) rtp_session->writing--; switch_mutex_unlock(rtp_session->write_mutex)

#define	RTP_STUN_FREQ 1000000

#define	rtp_header_len 12

#define	RTP_START_PORT 16384

#define	RTP_END_PORT 32768

#define	MASTER_KEY_LEN 30

#define	RTP_MAGIC_NUMBER 42

#define	WARN_SRTP_ERRS 10

#define	MAX_SRTP_ERRS 100

#define	NTP_TIME_OFFSET 2208988800UL

#define	DTMF_SANITY (rtp_session->one_second * 30)

#define	rtp_session_name(_rtp_session) _rtp_session->session ? switch_core_session_get_name(_rtp_session->session) : "-"

#define	STUN_USERNAME_MAX_SIZE 513 /* From RFC5389: "It MUST contain a UTF-8 [RFC3629] encoded sequence of less than 513 bytes" */

#define	SDP_UFRAG_MAX_SIZE

#define	RTP_BODY(_s) (char *) (_s->recv_msg.ebody ? _s->recv_msg.ebody : _s->recv_msg.body)

#define	KALMAN_SYSTEM_MODELS 3 /loss, jitter, rtt/

#define	EST_LOSS 0

#define	EST_JITTER 1

#define	EST_RTT 2

#define	MAX_DTLS_MTU 4096

#define	rtp_type(rtp_session) rtp_session->flags[SWITCH_RTP_FLAG_TEXT] ? "text" : (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] ? "video" : "audio")

#define	MEDIA_TOO_LONG 2000

#define	STUN_TOO_LONG 20000

#define	ADJ_TOO_LONG 1000

#define	MAX_NACK 10

#define	dtls_set_state(_dtls, _state) switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "Changing %s DTLS state from %s to %s\n", rtp_type(rtp_session), dtls_state_names(_dtls->state), dtls_state_names(_state)); _dtls->new_state = 1; _dtls->last_state = _dtls->state; _dtls->state = _state

#define	cr_keylen 16

#define	cr_saltlen 14

#define	cr_kslen 30

#define	return_cng_frame() do_cng = 1; goto timer_check

Typedefs
typedef srtp_hdr_t	rtp_hdr_t

typedef struct switch_rtcp_sdes_unit_s	switch_rtcp_sdes_unit_t

typedef struct switch_dtls_s	switch_dtls_t

typedef int(*	dtls_state_handler_t) (switch_rtp_t , switch_dtls_t )

typedef struct ts_normalize_s	ts_normalize_t

typedef struct packet_list_s	packet_list_t

typedef struct dtls_bio_filter	dtls_bio_filter

Enumerations
enum	vad_talk_mask_t { VAD_FIRE_TALK = (1 << 0), VAD_FIRE_NOT_TALK = (1 << 1) }

enum	handle_rfc2833_result_t { RESULT_CONTINUE, RESULT_GOTO_END, RESULT_GOTO_RECVFROM, RESULT_GOTO_TIMERCHECK }

Functions
static switch_size_t	do_flush (switch_rtp_t *rtp_session, int force, switch_size_t bytes_in)

static void	switch_rtp_dtls_init (void)

static void	switch_rtp_dtls_destroy (void)

static int	dtls_state_handshake (switch_rtp_t rtp_session, switch_dtls_t dtls)

static int	dtls_state_ready (switch_rtp_t rtp_session, switch_dtls_t dtls)

static int	dtls_state_setup (switch_rtp_t rtp_session, switch_dtls_t dtls)

static int	dtls_state_fail (switch_rtp_t rtp_session, switch_dtls_t dtls)

static void	do_2833 (switch_rtp_t *rtp_session)

static void	switch_rtp_change_ice_dest (switch_rtp_t rtp_session, switch_rtp_ice_t ice, const char *host, switch_port_t port)

static handle_rfc2833_result_t	handle_rfc2833 (switch_rtp_t rtp_session, switch_size_t bytes, int do_cng)

static int	rtp_write_ready (switch_rtp_t *rtp_session, uint32_t bytes, int line)

static int	rtp_common_write (switch_rtp_t rtp_session, rtp_msg_t send_msg, void data, uint32_t datalen, switch_payload_t payload, uint32_t timestamp, switch_frame_flag_t flags)

static void	calc_elapsed (switch_rtp_t rtp_session, switch_rtp_ice_t ice)

static switch_status_t	ice_out (switch_rtp_t rtp_session, switch_rtp_ice_t ice, switch_bool_t force)

int	icecmp (const char them, switch_rtp_ice_t ice)

static void	handle_ice (switch_rtp_t rtp_session, switch_rtp_ice_t ice, void *data, switch_size_t len)

void	switch_rtp_init (switch_memory_pool_t *pool)
	Initilize the RTP System. More...

static uint8_t	get_next_write_ts (switch_rtp_t *rtp_session, uint32_t timestamp)

static void	do_mos (switch_rtp_t *rtp_session)

void	burstr_calculate (int loss[], int received, double burstr, double lossr)

static void	reset_jitter_seq (switch_rtp_t *rtp_session)

static void	check_jitter (switch_rtp_t *rtp_session)

static void	rtcp_generate_sender_info (switch_rtp_t rtp_session, struct switch_rtcp_sender_info sr)

static uint32_t	calc_local_lsr_now (void)

static void	rtcp_generate_report_block (switch_rtp_t rtp_session, struct switch_rtcp_report_block rtcp_report_block, int16_t extra_expected)

static void	rtcp_stats_init (switch_rtp_t *rtp_session)

static int	rtcp_stats (switch_rtp_t *rtp_session)

static void	calc_bw_exp (uint32_t bps, uint8_t bits, rtcp_tmmbx_t *tmmbx)

static int	using_ice (switch_rtp_t *rtp_session)

static void	switch_send_rtcp_event (switch_rtp_t rtp_session, struct switch_rtcp_sender_report sr, struct switch_rtcp_report_block *rtcp_report_block)

static int	check_rtcp_and_ice (switch_rtp_t *rtp_session)

void	switch_rtp_ping (switch_rtp_t *rtp_session)

void	switch_rtp_get_random (void *buf, uint32_t len)

void	switch_rtp_shutdown (void)

switch_port_t	switch_rtp_set_start_port (switch_port_t port)
	Set/Get RTP start port. More...

switch_port_t	switch_rtp_set_end_port (switch_port_t port)
	Set/Get RTP end port. More...

void	switch_rtp_release_port (const char *ip, switch_port_t port)

switch_port_t	switch_rtp_request_port (const char *ip)
	Request a new port to be used for media. More...

switch_status_t	switch_rtp_set_payload_map (switch_rtp_t rtp_session, payload_map_t *pmap)

void	switch_rtp_intentional_bugs (switch_rtp_t *rtp_session, switch_rtp_bug_flag_t bugs)

static switch_status_t	enable_remote_rtcp_socket (switch_rtp_t rtp_session, const char *err)

static switch_status_t	enable_local_rtcp_socket (switch_rtp_t rtp_session, const char *err)

switch_status_t	switch_rtp_set_local_address (switch_rtp_t rtp_session, const char host, switch_port_t port, const char **err)
	Assign a local address to the RTP session. More...

void	switch_rtp_set_media_timeout (switch_rtp_t *rtp_session, uint32_t ms)

void	switch_rtp_set_max_missed_packets (switch_rtp_t *rtp_session, uint32_t max)

void	switch_rtp_reset_jb (switch_rtp_t *rtp_session)

void	switch_rtp_reset_vb (switch_rtp_t *rtp_session)

void	switch_rtp_reset (switch_rtp_t *rtp_session)

void	switch_rtp_reset_media_timer (switch_rtp_t *rtp_session)

char *	switch_rtp_get_remote_host (switch_rtp_t *rtp_session)

switch_port_t	switch_rtp_get_remote_port (switch_rtp_t *rtp_session)

static void	ping_socket (switch_rtp_t *rtp_session)

switch_status_t	switch_rtp_udptl_mode (switch_rtp_t *rtp_session)

switch_status_t	switch_rtp_set_remote_address (switch_rtp_t rtp_session, const char host, switch_port_t port, switch_port_t remote_rtcp_port, switch_bool_t change_adv_addr, const char **err)
	Assign a remote address to the RTP session. More...

static const char *	dtls_state_names (dtls_state_t s)

static void	free_dtls (switch_dtls_t **dtlsp)

static int	do_dtls (switch_rtp_t rtp_session, switch_dtls_t dtls)

BIO_METHOD *	BIO_dtls_filter (void)

static int	dtls_bio_filter_new (BIO *bio)

static int	dtls_bio_filter_free (BIO *bio)

static int	dtls_bio_filter_write (BIO bio, const char in, int inl)

static long	dtls_bio_filter_ctrl (BIO bio, int cmd, long num, void ptr)

int	switch_rtp_has_dtls (void)

dtls_state_t	switch_rtp_dtls_state (switch_rtp_t *rtp_session, dtls_type_t type)

switch_status_t	switch_rtp_del_dtls (switch_rtp_t *rtp_session, dtls_type_t type)

switch_status_t	switch_rtp_add_dtls (switch_rtp_t rtp_session, dtls_fingerprint_t local_fp, dtls_fingerprint_t *remote_fp, dtls_type_t type, uint8_t want_DTLSv1_2)

switch_status_t	switch_rtp_add_crypto_key (switch_rtp_t rtp_session, switch_rtp_crypto_direction_t direction, uint32_t index, switch_secure_settings_t ssec)

switch_status_t	switch_rtp_set_interval (switch_rtp_t *rtp_session, uint32_t ms_per_packet, uint32_t samples_per_interval)

switch_status_t	switch_rtp_change_interval (switch_rtp_t *rtp_session, uint32_t ms_per_packet, uint32_t samples_per_interval)

switch_status_t	switch_rtp_set_ssrc (switch_rtp_t *rtp_session, uint32_t ssrc)

switch_status_t	switch_rtp_set_remote_ssrc (switch_rtp_t *rtp_session, uint32_t ssrc)

switch_status_t	switch_rtp_create (switch_rtp_t *new_rtp_session, switch_payload_t payload, uint32_t samples_per_interval, uint32_t ms_per_packet, switch_rtp_flag_t flags[SWITCH_RTP_FLAG_INVALID], char timer_name, const char *err, switch_memory_pool_t pool)
	create a new RTP session handle More...

switch_rtp_t *	switch_rtp_new (const char rx_host, switch_port_t rx_port, const char tx_host, switch_port_t tx_port, switch_payload_t payload, uint32_t samples_per_interval, uint32_t ms_per_packet, switch_rtp_flag_t flags[SWITCH_RTP_FLAG_INVALID], char timer_name, const char err, switch_memory_pool_t pool, switch_port_t bundle_internal_port, switch_port_t bundle_external_port)
	prepare a new RTP session handle and fully initilize it More...

void	switch_rtp_set_telephony_event (switch_rtp_t *rtp_session, switch_payload_t te)
	Set the payload type to consider RFC2833 DTMF. More...

void	switch_rtp_set_telephony_recv_event (switch_rtp_t *rtp_session, switch_payload_t te)

void	switch_rtp_set_cng_pt (switch_rtp_t *rtp_session, switch_payload_t pt)
	Set the payload type for comfort noise. More...

switch_timer_t *	switch_rtp_get_media_timer (switch_rtp_t *rtp_session)

switch_jb_t *	switch_rtp_get_jitter_buffer (switch_rtp_t *rtp_session)

switch_status_t	switch_rtp_pause_jitter_buffer (switch_rtp_t *rtp_session, switch_bool_t pause)

switch_status_t	switch_rtp_deactivate_jitter_buffer (switch_rtp_t *rtp_session)

switch_status_t	switch_rtp_get_video_buffer_size (switch_rtp_t rtp_session, uint32_t min_frame_len, uint32_t max_frame_len, uint32_t cur_frame_len, uint32_t *highest_frame_len)

switch_status_t	switch_rtp_set_video_buffer_size (switch_rtp_t *rtp_session, uint32_t frames, uint32_t max_frames)

switch_status_t	switch_rtp_debug_jitter_buffer (switch_rtp_t rtp_session, const char name)

switch_status_t	switch_rtp_activate_jitter_buffer (switch_rtp_t *rtp_session, uint32_t queue_frames, uint32_t max_queue_frames, uint32_t samples_per_packet, uint32_t samples_per_second)
	Acvite a jitter buffer on an RTP session. More...

switch_status_t	switch_rtp_activate_rtcp (switch_rtp_t *rtp_session, int send_rate, switch_port_t remote_port, switch_bool_t mux)
	Activate sending RTCP Sender Reports (SR's) More...

switch_status_t	switch_rtp_activate_ice (switch_rtp_t rtp_session, char login, char rlogin, const char password, const char rpassword, ice_proto_t proto, switch_core_media_ice_type_t type, ice_t ice_params)
	Acvite ICE on an RTP session. More...

void	switch_rtp_flush (switch_rtp_t *rtp_session)

switch_status_t	switch_rtp_req_bitrate (switch_rtp_t *rtp_session, uint32_t bps)

switch_status_t	switch_rtp_ack_bitrate (switch_rtp_t *rtp_session, uint32_t bps)

void	switch_rtp_video_refresh (switch_rtp_t *rtp_session)

void	switch_rtp_video_loss (switch_rtp_t *rtp_session)

void	switch_rtp_break (switch_rtp_t *rtp_session)

void	switch_rtp_kill_socket (switch_rtp_t *rtp_session)
	Kill the socket on an existing RTP session. More...

uint8_t	switch_rtp_ready (switch_rtp_t *rtp_session)
	Test if an RTP session is ready. More...

switch_status_t	switch_rtp_sync_stats (switch_rtp_t *rtp_session)

void	switch_rtp_destroy (switch_rtp_t **rtp_session)
	Destroy an RTP session. More...

void	switch_rtp_set_interdigit_delay (switch_rtp_t *rtp_session, uint32_t delay)

switch_socket_t *	switch_rtp_get_rtp_socket (switch_rtp_t *rtp_session)
	Retrieve the socket from an existing RTP session. More...

uint32_t	switch_rtp_get_default_samples_per_interval (switch_rtp_t *rtp_session)
	Get the default samples per interval for a given RTP session. More...

void	switch_rtp_set_default_payload (switch_rtp_t *rtp_session, switch_payload_t payload)
	Set the default payload number for a given RTP session. More...

uint32_t	switch_rtp_get_default_payload (switch_rtp_t *rtp_session)
	Get the default payload number for a given RTP session. More...

void	switch_rtp_set_invalid_handler (switch_rtp_t *rtp_session, switch_rtp_invalid_handler_t on_invalid)
	Set a callback function to execute when an invalid RTP packet is encountered. More...

void	switch_rtp_set_flags (switch_rtp_t *rtp_session, switch_rtp_flag_t flags[SWITCH_RTP_FLAG_INVALID])

void	switch_rtp_clear_flags (switch_rtp_t *rtp_session, switch_rtp_flag_t flags[SWITCH_RTP_FLAG_INVALID])

void	switch_rtp_set_flag (switch_rtp_t *rtp_session, switch_rtp_flag_t flag)
	Set an RTP Flag. More...

uint32_t	switch_rtp_test_flag (switch_rtp_t *rtp_session, switch_rtp_flag_t flags)
	Test an RTP Flag. More...

void	switch_rtp_clear_flag (switch_rtp_t *rtp_session, switch_rtp_flag_t flag)
	Clear an RTP Flag. More...

static void	set_dtmf_delay (switch_rtp_t *rtp_session, uint32_t ms, uint32_t max_ms)

void	rtp_flush_read_buffer (switch_rtp_t *rtp_session, switch_rtp_flush_t flush)

static int	jb_valid (switch_rtp_t *rtp_session)

static int	check_recv_payload (switch_rtp_t *rtp_session)

static int	get_recv_payload (switch_rtp_t *rtp_session)

static switch_status_t	read_bundle_rtp_packet (switch_rtp_t rtp_session, switch_size_t bytes, switch_frame_flag_t *flags)

static switch_status_t	read_rtp_packet (switch_rtp_t rtp_session, switch_size_t bytes, switch_frame_flag_t flags, payload_map_t *pmapP, switch_status_t poll_status, switch_bool_t return_jb_packet)

static void	handle_nack (switch_rtp_t *rtp_session, uint32_t nack)

static switch_status_t	process_rtcp_report (switch_rtp_t rtp_session, rtcp_msg_t msg, switch_size_t bytes)

static switch_status_t	process_rtcp_packet (switch_rtp_t rtp_session, switch_size_t bytes)

static switch_status_t	read_rtcp_packet (switch_rtp_t rtp_session, switch_size_t bytes, switch_frame_flag_t *flags)

static void	check_timeout (switch_rtp_t *rtp_session)

static int	rtp_common_read (switch_rtp_t rtp_session, switch_payload_t payload_type, payload_map_t *pmapP, switch_frame_flag_t flags, switch_io_flag_t io_flags)

switch_byte_t	switch_rtp_check_auto_adj (switch_rtp_t *rtp_session)

switch_size_t	switch_rtp_has_dtmf (switch_rtp_t *rtp_session)
	Test for presence of DTMF on a given RTP session. More...

switch_size_t	switch_rtp_dequeue_dtmf (switch_rtp_t rtp_session, switch_dtmf_t dtmf)
	Retrieve DTMF digits from a given RTP session. More...

switch_status_t	switch_rtp_queue_rfc2833 (switch_rtp_t rtp_session, const switch_dtmf_t dtmf)
	Queue RFC2833 DTMF data into an RTP Session. More...

switch_status_t	switch_rtp_queue_rfc2833_in (switch_rtp_t rtp_session, const switch_dtmf_t dtmf)
	Queue RFC2833 DTMF data into an RTP Session. More...

switch_status_t	switch_rtp_read (switch_rtp_t rtp_session, void data, uint32_t datalen, switch_payload_t payload_type, switch_frame_flag_t *flags, switch_io_flag_t io_flags)
	Read data from a given RTP session. More...

switch_status_t	switch_rtcp_zerocopy_read_frame (switch_rtp_t rtp_session, switch_rtcp_frame_t frame)
	Read RTCP data from a given RTP session without copying. More...

switch_status_t	switch_rtp_zerocopy_read_frame (switch_rtp_t rtp_session, switch_frame_t frame, switch_io_flag_t io_flags)
	Read data from a given RTP session without copying. More...

switch_status_t	switch_rtp_zerocopy_read (switch_rtp_t rtp_session, void data, uint32_t datalen, switch_payload_t payload_type, switch_frame_flag_t flags, switch_io_flag_t io_flags)
	Read data from a given RTP session without copying. More...

switch_status_t	switch_rtp_disable_vad (switch_rtp_t *rtp_session)
	Disable VAD on an RTP Session. More...

switch_status_t	switch_rtp_enable_vad (switch_rtp_t rtp_session, switch_core_session_t session, switch_codec_t *codec, switch_vad_flag_t flags)
	Enable VAD on an RTP Session. More...

int	switch_rtp_write_frame (switch_rtp_t rtp_session, switch_frame_t frame)
	Write data to a given RTP session. More...

switch_rtp_stats_t *	switch_rtp_get_stats (switch_rtp_t rtp_session, switch_memory_pool_t pool)

int	switch_rtp_write_manual (switch_rtp_t rtp_session, void data, uint32_t datalen, uint8_t m, switch_payload_t payload, uint32_t ts, switch_frame_flag_t *flags)
	Write data with a specified payload and sequence number to a given RTP session. More...

switch_status_t	switch_rtp_write_raw (switch_rtp_t rtp_session, void data, switch_size_t *bytes, switch_bool_t process_encryption)

uint32_t	switch_rtp_get_ssrc (switch_rtp_t *rtp_session)
	Retrieve the SSRC from a given RTP session. More...

void	switch_rtp_set_private (switch_rtp_t rtp_session, void private_data)
	Associate an arbitrary data pointer with and RTP session. More...

void *	switch_rtp_get_private (switch_rtp_t *rtp_session)
	Retrieve the private data from a given RTP session. More...

switch_core_session_t *	switch_rtp_get_core_session (switch_rtp_t *rtp_session)

Variables
static const switch_payload_t	INVALID_PT = 255

static switch_port_t	START_PORT = RTP_START_PORT

static switch_port_t	END_PORT = RTP_END_PORT

static switch_mutex_t *	port_lock = NULL

static switch_hash_t *	alloc_hash = NULL

dtls_state_handler_t	dtls_states [DS_INVALID] = {NULL, dtls_state_handshake, dtls_state_setup, dtls_state_ready, dtls_state_fail}

static int	global_init = 0

static const char *	dtls_state_names_t [] = {"OFF", "HANDSHAKE", "SETUP", "READY", "FAIL", "INVALID"}

static BIO_METHOD	dtls_bio_filter_methods

Macro Definition Documentation

◆ ADJ_TOO_LONG

#define ADJ_TOO_LONG 1000

Definition at line 821 of file switch_rtp.c.

Referenced by calc_elapsed().

◆ cr_keylen

#define cr_keylen 16

Definition at line 3211 of file switch_rtp.c.

Referenced by dtls_state_setup().

◆ cr_kslen

#define cr_kslen 30

Definition at line 3213 of file switch_rtp.c.

Referenced by dtls_state_setup().

◆ cr_saltlen

#define cr_saltlen 14

Definition at line 3212 of file switch_rtp.c.

Referenced by dtls_state_setup().

◆ DEBUG_ESTIMATORS_

#define DEBUG_ESTIMATORS_

Definition at line 63 of file switch_rtp.c.

◆ dtls_set_state

#define dtls_set_state	(	_dtls,
		_state
	)	switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "Changing %s DTLS state from %s to %s\n", rtp_type(rtp_session), dtls_state_names(_dtls->state), dtls_state_names(_state)); _dtls->new_state = 1; _dtls->last_state = _dtls->state; _dtls->state = _state

Definition at line 3209 of file switch_rtp.c.

Referenced by dtls_state_handshake(), dtls_state_setup(), read_bundle_rtp_packet(), and switch_rtp_add_dtls().

◆ DTMF_SANITY

#define DTMF_SANITY (rtp_session->one_second * 30)

Definition at line 83 of file switch_rtp.c.

Referenced by handle_rfc2833().

◆ EST_JITTER

#define EST_JITTER 1

Definition at line 175 of file switch_rtp.c.

◆ EST_LOSS

#define EST_LOSS 0

Definition at line 174 of file switch_rtp.c.

Referenced by process_rtcp_report(), and rtcp_stats_init().

◆ EST_RTT

#define EST_RTT 2

Definition at line 176 of file switch_rtp.c.

Referenced by process_rtcp_report(), and rtcp_stats_init().

◆ JITTER_LEAD_FRAMES

#define JITTER_LEAD_FRAMES 10

Definition at line 66 of file switch_rtp.c.

Referenced by check_jitter(), and rtp_common_read().

◆ KALMAN_SYSTEM_MODELS

#define KALMAN_SYSTEM_MODELS 3 /*loss, jitter, rtt*/

Definition at line 173 of file switch_rtp.c.

Referenced by rtcp_stats_init().

◆ MASTER_KEY_LEN

#define MASTER_KEY_LEN 30

Definition at line 76 of file switch_rtp.c.

◆ MAX_DTLS_MTU

#define MAX_DTLS_MTU 4096

Definition at line 269 of file switch_rtp.c.

Referenced by do_dtls(), and switch_rtp_add_dtls().

◆ MAX_NACK

#define MAX_NACK 10

Definition at line 2132 of file switch_rtp.c.

Referenced by check_rtcp_and_ice().

◆ MAX_SRTP_ERRS

#define MAX_SRTP_ERRS 100

Definition at line 79 of file switch_rtp.c.

Referenced by read_bundle_rtp_packet(), and read_rtp_packet().

◆ MEDIA_TOO_LONG

#define MEDIA_TOO_LONG 2000

Definition at line 819 of file switch_rtp.c.

Referenced by calc_elapsed(), and handle_ice().

◆ NTP_TIME_OFFSET

#define NTP_TIME_OFFSET 2208988800UL

Definition at line 80 of file switch_rtp.c.

Referenced by calc_local_lsr_now(), and rtcp_generate_sender_info().

◆ READ_DEC

#define READ_DEC ( rtp_session ) rtp_session->reading--; switch_mutex_unlock(rtp_session->read_mutex)

Definition at line 68 of file switch_rtp.c.

Referenced by do_flush(), handle_ice(), ice_out(), rtp_common_read(), switch_rtp_activate_jitter_buffer(), switch_rtp_change_interval(), switch_rtp_destroy(), switch_rtp_set_local_address(), and switch_rtp_udptl_mode().

◆ READ_INC

#define READ_INC ( rtp_session ) switch_mutex_lock(rtp_session->read_mutex); rtp_session->reading++

Definition at line 67 of file switch_rtp.c.

Referenced by do_flush(), handle_ice(), ice_out(), rtp_common_read(), switch_rtp_activate_jitter_buffer(), switch_rtp_change_interval(), switch_rtp_destroy(), switch_rtp_set_local_address(), and switch_rtp_udptl_mode().

◆ return_cng_frame

#define return_cng_frame ( ) do_cng = 1; goto timer_check

Definition at line 5845 of file switch_rtp.c.

Referenced by rtp_common_read().

◆ RTP_BODY

#define RTP_BODY ( _s ) (char *) (_s->recv_msg.ebody ? _s->recv_msg.ebody : _s->recv_msg.body)

Definition at line 118 of file switch_rtp.c.

Referenced by handle_rfc2833(), read_rtp_packet(), rtp_common_read(), switch_rtp_read(), switch_rtp_zerocopy_read(), and switch_rtp_zerocopy_read_frame().

◆ RTP_END_PORT

#define RTP_END_PORT 32768

Definition at line 75 of file switch_rtp.c.

◆ rtp_header_len

#define rtp_header_len 12

Definition at line 73 of file switch_rtp.c.

Referenced by do_flush(), handle_rfc2833(), read_rtp_packet(), rtp_common_read(), rtp_common_write(), switch_rtp_read(), switch_rtp_write_manual(), switch_rtp_zerocopy_read(), and switch_rtp_zerocopy_read_frame().

◆ RTP_MAGIC_NUMBER

#define RTP_MAGIC_NUMBER 42

Definition at line 77 of file switch_rtp.c.

◆ rtp_session_name

#define rtp_session_name ( _rtp_session ) _rtp_session->session ? switch_core_session_get_name(_rtp_session->session) : "-"

Definition at line 85 of file switch_rtp.c.

Referenced by check_jitter(), check_rtcp_and_ice(), do_mos(), handle_ice(), ice_out(), and rtp_common_read().

◆ RTP_START_PORT

#define RTP_START_PORT 16384

Definition at line 74 of file switch_rtp.c.

◆ RTP_STUN_FREQ

#define RTP_STUN_FREQ 1000000

Definition at line 72 of file switch_rtp.c.

Referenced by ice_out().

◆ rtp_type

#define rtp_type ( rtp_session ) rtp_session->flags[SWITCH_RTP_FLAG_TEXT] ? "text" : (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] ? "video" : "audio")

◆ SDP_UFRAG_MAX_SIZE

#define SDP_UFRAG_MAX_SIZE

Value:

256     /* From draft-ietf-mmusic-ice-sip-sdp-24: "the ice-ufrag attribute MUST NOT be longer than 32
                                                                 * characters when sending, but an implementation MUST accept up to 256
                                                                 * characters when receiving." */

Definition at line 88 of file switch_rtp.c.

Referenced by switch_rtp_activate_ice().

◆ STUN_TOO_LONG

#define STUN_TOO_LONG 20000

Definition at line 820 of file switch_rtp.c.

Referenced by handle_ice().

◆ STUN_USERNAME_MAX_SIZE

#define STUN_USERNAME_MAX_SIZE 513 /* From RFC5389: "It MUST contain a UTF-8 [RFC3629] encoded sequence of less than 513 bytes" */

Definition at line 87 of file switch_rtp.c.

Referenced by handle_ice(), and switch_rtp_activate_ice().

◆ WARN_SRTP_ERRS

#define WARN_SRTP_ERRS 10

Definition at line 78 of file switch_rtp.c.

Referenced by read_bundle_rtp_packet(), and read_rtp_packet().

◆ WRITE_DEC

#define WRITE_DEC ( rtp_session ) rtp_session->writing--; switch_mutex_unlock(rtp_session->write_mutex)

Definition at line 70 of file switch_rtp.c.

Referenced by handle_ice(), rtp_common_write(), switch_rtp_change_interval(), switch_rtp_destroy(), switch_rtp_set_local_address(), switch_rtp_udptl_mode(), switch_rtp_write_manual(), and switch_rtp_write_raw().

◆ WRITE_INC

#define WRITE_INC ( rtp_session ) switch_mutex_lock(rtp_session->write_mutex); rtp_session->writing++

Definition at line 69 of file switch_rtp.c.

Referenced by handle_ice(), rtp_common_write(), switch_rtp_change_interval(), switch_rtp_destroy(), switch_rtp_set_local_address(), switch_rtp_udptl_mode(), switch_rtp_write_manual(), and switch_rtp_write_raw().

Typedef Documentation

◆ dtls_bio_filter

typedef struct dtls_bio_filter dtls_bio_filter

◆ dtls_state_handler_t

typedef int(* dtls_state_handler_t) (switch_rtp_t *, switch_dtls_t *)

Definition at line 296 of file switch_rtp.c.

◆ packet_list_t

typedef struct packet_list_s packet_list_t

◆ rtp_hdr_t

typedef srtp_hdr_t rtp_hdr_t

Definition at line 97 of file switch_rtp.c.

◆ switch_dtls_t

typedef struct switch_dtls_s switch_dtls_t

◆ switch_rtcp_sdes_unit_t

typedef struct switch_rtcp_sdes_unit_s switch_rtcp_sdes_unit_t

◆ ts_normalize_t

typedef struct ts_normalize_s ts_normalize_t

Enumeration Type Documentation

◆ handle_rfc2833_result_t

enum handle_rfc2833_result_t

Enumerator
RESULT_CONTINUE
RESULT_GOTO_END
RESULT_GOTO_RECVFROM
RESULT_GOTO_TIMERCHECK

Definition at line 530 of file switch_rtp.c.

              {
         RESULT_CONTINUE,
         RESULT_GOTO_END,
         RESULT_GOTO_RECVFROM,
         RESULT_GOTO_TIMERCHECK
 } handle_rfc2833_result_t;

◆ vad_talk_mask_t

enum vad_talk_mask_t

Enumerator
VAD_FIRE_TALK
VAD_FIRE_NOT_TALK

Definition at line 189 of file switch_rtp.c.

              {
         VAD_FIRE_TALK = (1 << 0),
         VAD_FIRE_NOT_TALK = (1 << 1)
 } vad_talk_mask_t;

Function Documentation

◆ BIO_dtls_filter()

BIO_METHOD* BIO_dtls_filter ( void )

Definition at line 3472 of file switch_rtp.c.

Referenced by switch_rtp_add_dtls().

                                   {
 #if OPENSSL_VERSION_NUMBER < 0x10100000L        
         return(&dtls_bio_filter_methods);
 #else
         return(dtls_bio_filter_methods);
 #endif
 }

◆ burstr_calculate()

void burstr_calculate	(	int	loss[],
		int	received,
		double *	burstr,
		double *	lossr
	)

Definition at line 1621 of file switch_rtp.c.

References switch_rtcp_report_block_frame::lost, and LOST_BURST_ANALYZE.

Referenced by check_jitter().

 {
         int lost = 0;
         int bursts = 0;
         int i;
 
         for ( i = 0; i < LOST_BURST_ANALYZE; i++ ) {
                 lost += i * loss[i];
                 bursts += loss[i];
         }
         if (received > 0 && bursts > 0) {
                 *burstr = (double)((double)lost / (double)bursts) / (double)(1.0 / ( 1.0 - (double)lost / (double)received ));
                 if (*burstr < 0) {
                         *burstr = - *burstr;
                 }
         } else {
                 *burstr = 0;
         }
         if (received > 0) {
                 *lossr = (double)((double)lost / (double)received);
         } else {
                 *lossr = 0;
         }
 }

◆ calc_bw_exp()

static void calc_bw_exp	(	uint32_t	bps,
		uint8_t	bits,
		rtcp_tmmbx_t *	tmmbx
	)

static

Definition at line 2024 of file switch_rtp.c.

References rtcp_tmmbx_t::parts, and switch_assert.

Referenced by check_rtcp_and_ice().

 {
         uint32_t mantissa_max, i = 0;
         uint8_t exp = 0;
         uint32_t mantissa = 0;
         uint16_t overhead = 60;
 
         switch_assert(bits<=32);
 
         mantissa_max = (1 << bits) - 1;
 
         for (i = 0; i < 32; ++i) {
                 if (bps <= (mantissa_max << i)) {
                         exp = i;
                         break;
                 }
         }
 
         mantissa = (bps >> exp);
 
         tmmbx->parts[0] = (uint8_t) ((exp << 2) + ((mantissa >> 15) & 0x03));
         tmmbx->parts[1] = (uint8_t) (mantissa >> 7);
         tmmbx->parts[2] = (uint8_t) ((mantissa >> 1) + ((overhead >> 8) & 0x01));
         tmmbx->parts[3] = (uint8_t) (overhead);
 }

◆ calc_elapsed()

static void calc_elapsed	(	switch_rtp_t *	rtp_session,
		switch_rtp_ice_t *	ice
	)

static

Definition at line 823 of file switch_rtp.c.

References ADJ_TOO_LONG, DS_READY, switch_rtp::dtls, switch_rtp::elapsed_adj, switch_rtp::elapsed_media, switch_rtp::elapsed_stun, switch_rtp::first_stun, switch_rtp::last_adj, switch_rtp::last_media, switch_rtp_ice_t::last_ok, MEDIA_TOO_LONG, switch_dtls_s::state, and switch_micro_time_now().

Referenced by handle_ice().

 {
         switch_time_t ref_point;
         switch_time_t now;
 
         now = switch_micro_time_now();
 
         if (ice->last_ok && (!rtp_session->dtls || rtp_session->dtls->state == DS_READY)) {
                 ref_point = ice->last_ok;
         } else {
                 ref_point = rtp_session->first_stun;
         }
 
         if (!ref_point) ref_point = now;
 
         rtp_session->elapsed_stun = (unsigned int) ((now - ref_point) / 1000);
 
         if (rtp_session->last_media) {
                 rtp_session->elapsed_media = (unsigned int) ((now - rtp_session->last_media) / 1000);
         } else {
                 rtp_session->elapsed_media = MEDIA_TOO_LONG + 1;
         }
 
         if (rtp_session->last_adj) {
                 rtp_session->elapsed_adj = (unsigned int) ((now - rtp_session->last_adj) / 1000);
         } else {
                 rtp_session->elapsed_adj = ADJ_TOO_LONG + 1;
         }
 }

◆ calc_local_lsr_now()

static uint32_t calc_local_lsr_now ( void )

inlinestatic

Definition at line 1819 of file switch_rtp.c.

References NTP_TIME_OFFSET, and switch_micro_time_now().

Referenced by process_rtcp_report(), and rtcp_generate_report_block().

 {
         switch_time_t now;
         uint32_t ntp_sec, ntp_usec, lsr_now, sec;
         now = switch_micro_time_now();
         sec = (uint32_t)(now/1000000);        /* convert to seconds     */
         ntp_sec = sec+NTP_TIME_OFFSET;  /* convert to NTP seconds */
         ntp_usec = (uint32_t)(now - ((switch_time_t) sec*1000000)); /* remove seconds to keep only the microseconds */
 
         lsr_now = (uint32_t)(ntp_usec*0.065536) | (ntp_sec&0x0000ffff)<<16; /* 0.065536 is used for convertion from useconds to fraction of 65536 (x65536/1000000) */
 
         return lsr_now;
 }

◆ check_jitter()

static void check_jitter ( switch_rtp_t * rtp_session )

static

Definition at line 1655 of file switch_rtp.c.

Referenced by read_rtp_packet().

 {
         switch_time_t current_time;
         int64_t diff_time = 0, cur_diff = 0;
         int seq;
 
         current_time = switch_micro_time_now() / 1000;
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_PAUSE] || rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] || rtp_session->dtmf_data.in_digit_ts) {
                 reset_jitter_seq(rtp_session);
                 return;
         }
 
         if (++rtp_session->jitter_lead < JITTER_LEAD_FRAMES || !rtp_session->stats.inbound.last_proc_time) {
                 rtp_session->stats.inbound.last_proc_time = current_time;
                 return;
         }
 
         diff_time = (current_time - rtp_session->stats.inbound.last_proc_time);
         seq = (int)(uint16_t) ntohs((uint16_t) rtp_session->last_rtp_hdr.seq);
 
         /* Burst and Packet Loss */
         rtp_session->stats.inbound.recved++;
 
         if (rtp_session->stats.inbound.last_processed_seq > 0 && seq > (int)(rtp_session->stats.inbound.last_processed_seq + 1)) {
                 int lost = (seq - rtp_session->stats.inbound.last_processed_seq - 1);
 
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "%s Got: %s seq %d but expected: %d lost: %d\n",
                                                   rtp_session_name(rtp_session),
                                                   rtp_type(rtp_session),
                                                   seq,
                                                   (rtp_session->stats.inbound.last_processed_seq + 1), lost);
                 rtp_session->stats.inbound.last_loss++;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         switch_core_session_request_video_refresh(rtp_session->session);
                 }
 
                 if (rtp_session->stats.inbound.last_loss > 0 && rtp_session->stats.inbound.last_loss < LOST_BURST_CAPTURE) {
                         rtp_session->stats.inbound.loss[rtp_session->stats.inbound.last_loss] += lost;
                 }
 
                 rtp_session->bad_stream++;
                 rtp_session->stats.inbound.flaws += lost;
 
                 if (rtp_session->stats.inbound.error_log) {
                         rtp_session->stats.inbound.error_log->flaws += lost;
                 }
 
         } else {
                 rtp_session->stats.inbound.last_loss = 0;
         }
 
         rtp_session->stats.inbound.last_processed_seq = seq;
 
         /* Burst and Packet Loss */
 
         if (current_time > rtp_session->next_stat_check_time) {
                 rtp_session->next_stat_check_time = current_time + 5000;
                 burstr_calculate(rtp_session->stats.inbound.loss, rtp_session->stats.inbound.recved,
                                                  &(rtp_session->stats.inbound.burstrate), &(rtp_session->stats.inbound.lossrate));
                 do_mos(rtp_session);
         } else {
                 do_mos(rtp_session);
         }
 
         if (rtp_session->stats.inbound.last_loss || rtp_session->bad_stream) {
                 if (rtp_session->session && (!rtp_session->stats.inbound.error_log || rtp_session->stats.inbound.error_log->stop)) {
                         struct error_period *error = switch_core_session_alloc(rtp_session->session, sizeof(*error));
                         error->start = switch_micro_time_now();
                         error->next = rtp_session->stats.inbound.error_log;
                         rtp_session->stats.inbound.error_log = error;
                 }
 
                 if (!rtp_session->stats.inbound.last_loss) {
                         if (++rtp_session->recovering_stream > (rtp_session->one_second * 3)) {
                                 if (rtp_session->session && rtp_session->stats.inbound.error_log) {
                                         rtp_session->stats.inbound.error_log->stop = switch_micro_time_now();
                                 }
 
                                 rtp_session->bad_stream = 0;
                         }
                 } else {
                         rtp_session->recovering_stream = 0;
                         rtp_session->bad_stream++;
                 }
         } else {
                 rtp_session->recovering_stream = 0;
                 rtp_session->clean_stream++;
         }
 
 
         if ( diff_time < 0 ) {
                 diff_time = -diff_time;
         }
 
         rtp_session->stats.inbound.jitter_n++;
         rtp_session->stats.inbound.jitter_add += diff_time;
 
         if (rtp_session->stats.inbound.mean_interval) {
                 cur_diff = (int64_t)(diff_time - rtp_session->stats.inbound.mean_interval);
         } else {
                 cur_diff = 0;
         }
 
         rtp_session->stats.inbound.jitter_addsq += (cur_diff * cur_diff);
         rtp_session->stats.inbound.last_proc_time = current_time;
 
         if (rtp_session->stats.inbound.jitter_n > 0) {
                 double ipdv;
 
                 rtp_session->stats.inbound.mean_interval = (double)rtp_session->stats.inbound.jitter_add / (double)rtp_session->stats.inbound.jitter_n;
 
                 if (!rtp_session->old_mean) {
                         rtp_session->old_mean = rtp_session->stats.inbound.mean_interval;
                 }
 
                 rtp_session->stats.inbound.variance = (double)rtp_session->stats.inbound.jitter_addsq / (double)rtp_session->stats.inbound.jitter_n;
 
                 //printf("CHECK %d +%ld +%ld %f %f\n", rtp_session->write_timer.samplecount, diff_time, (diff_time * diff_time), rtp_session->stats.inbound.mean_interval, rtp_session->stats.inbound.variance);
 
                 ipdv = rtp_session->old_mean - rtp_session->stats.inbound.mean_interval;
 
                 if ( ipdv > IPDV_THRESHOLD ) { /* It shows Increasing Delays */
                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG3, "Calculated Instantaneous Packet Delay Variation: %s packet %lf\n",
                                                           rtp_type(rtp_session), ipdv);
                 }
 
                 if ( rtp_session->stats.inbound.variance < rtp_session->stats.inbound.min_variance || rtp_session->stats.inbound.min_variance == 0 ) {
                         rtp_session->stats.inbound.min_variance = rtp_session->stats.inbound.variance;
                 }
 
                 if ( rtp_session->stats.inbound.variance > rtp_session->stats.inbound.max_variance ) {
                         rtp_session->stats.inbound.max_variance = rtp_session->stats.inbound.variance;
                 }
 
                 rtp_session->old_mean = rtp_session->stats.inbound.mean_interval;
         }
 }

◆ check_recv_payload()

static int check_recv_payload ( switch_rtp_t * rtp_session )

static

Definition at line 5799 of file switch_rtp.c.

References payload_map_s::allocated, switch_rtp::flag_mutex, switch_rtp::last_rtp_hdr, payload_map_s::negotiated, payload_map_s::next, switch_rtp::pmaps, payload_map_s::pt, RTP_BUG_ACCEPT_ANY_PAYLOAD, switch_rtp::rtp_bugs, switch_mutex_lock(), and switch_mutex_unlock().

Referenced by read_rtp_packet(), and rtp_common_read().

 {
         int ok = 1;
 
         if (!(rtp_session->rtp_bugs & RTP_BUG_ACCEPT_ANY_PAYLOAD) && rtp_session->pmaps && *rtp_session->pmaps) {
                 payload_map_t *pmap;
                 ok = 0;
 
                 switch_mutex_lock(rtp_session->flag_mutex);
 
                 for (pmap = *rtp_session->pmaps; pmap && pmap->allocated; pmap = pmap->next) {
                         if (!pmap->negotiated) {
                                 continue;
                         }
 
                         if (rtp_session->last_rtp_hdr.pt == pmap->pt) {
                                 ok = 1;
                         }
                 }
                 switch_mutex_unlock(rtp_session->flag_mutex);
         }
 
         return ok;
 }

◆ check_rtcp_and_ice()

static int check_rtcp_and_ice ( switch_rtp_t * rtp_session )

static

Definition at line 2133 of file switch_rtp.c.

References _RTCP_PSFB_FIR, _RTCP_PSFB_PLI, _RTCP_PT_FIR, _RTCP_PT_PSFB, _RTCP_PT_RR, _RTCP_PT_RTPFB, _RTCP_PT_SDES, _RTCP_PT_SR, _RTCP_RTPFB_NACK, _RTCP_RTPFB_TMMBN, _RTCP_RTPFB_TMMBR, _RTCP_SDES_CNAME, _RTCP_SDES_NOTE, rtcp_msg_t::body, calc_bw_exp(), switch_rtp::cn, switch_rtp::cng_pt, switch_rtcp_hdr_s::count, switch_rtcp_numbers_t::cycle, FALSE, switch_rtp::fir_count, switch_rtcp_video_counters_t::fir_count, switch_rtp::fir_seq, switch_rtp::flags, switch_rtcp_ext_hdr_t::fmt, get_next_write_ts(), rtp_msg_t::header, rtcp_msg_t::header, switch_rtcp_numbers_t::high_ext_seq_recv, switch_rtp::ice, switch_rtp::ice_mutex, ice_out(), switch_rtp_ice_t::ice_user, switch_rtp_stats_t::inbound, INVALID_PT, switch_rtcp_numbers_t::last_rpt_cycle, switch_rtcp_numbers_t::last_rpt_ext_seq, switch_rtcp_numbers_t::last_rpt_ts, switch_rtp::last_write_samplecount, switch_rtcp_sdes_unit_s::length, switch_rtcp_ext_hdr_t::length, switch_rtcp_hdr_s::length, MAX_NACK, switch_rtcp_video_counters_t::nack_count, switch_rtcp_ext_hdr_t::p, switch_rtcp_hdr_s::p, switch_rtp_numbers_t::period_packet_count, switch_rtcp_numbers_t::period_pkt_count, switch_rtp::pli_count, switch_rtcp_video_counters_t::pli_count, switch_rtp::prev_nacks_inflight, switch_rtcp_ext_hdr_t::pt, rtcp_fir_t::r1, rtcp_fir_t::r2, rtcp_fir_t::r3, switch_rtcp_ext_hdr_t::recv_ssrc, switch_rtp::remote_ssrc, switch_rtcp_sender_report::report_block, switch_rtcp_receiver_report::report_block, switch_rtp_ice_t::rready, switch_rtp_stats_t::rtcp, rtcp_generate_report_block(), rtcp_generate_sender_info(), switch_rtp::rtcp_ice, switch_rtp::rtcp_interval, switch_rtp::rtcp_last_sent, switch_rtp::rtcp_remote_addr, switch_rtp::rtcp_send_msg, switch_rtp::rtcp_sent_packets, switch_rtp::rtcp_sock_output, switch_rtp::rtcp_vstats, rtp_session_name, rtp_type, switch_timer::samplecount, switch_rtp::samples_per_interval, switch_rtp::send_ctx, switch_rtp::send_msg, switch_rtp::send_rr, switch_rtcp_ext_hdr_t::send_ssrc, switch_rtcp_sender_report::sender_info, switch_rtcp_numbers_t::sent_pkt_count, rtcp_fir_t::seq, switch_rtp::session, SFF_NONE, switch_rtp::srtp_idx_rtcp, switch_rtcp_report_block_frame::ssrc, rtcp_fir_t::ssrc, rtcp_tmmbx_t::ssrc, switch_rtp::ssrc, switch_rtcp_sender_report::ssrc, switch_rtcp_receiver_report::ssrc, switch_rtp::stats, SWITCH_CHANNEL_SESSION_LOG, switch_core_session_get_name, switch_core_session_media_flow(), SWITCH_CRYPTO_MKI_INDEX, SWITCH_FALSE, switch_get_addr(), switch_jb_pop_nack(), SWITCH_LOG_CRIT, SWITCH_LOG_DEBUG, SWITCH_LOG_DEBUG1, SWITCH_LOG_DEBUG2, SWITCH_LOG_ERROR, switch_log_printf(), SWITCH_MEDIA_FLOW_RECVONLY, SWITCH_MEDIA_TYPE_AUDIO, SWITCH_MEDIA_TYPE_VIDEO, switch_micro_time_now(), switch_mutex_lock(), switch_mutex_unlock(), SWITCH_RTP_FLAG_AUDIO_FIRE_SEND_RTCP_EVENT, SWITCH_RTP_FLAG_AUTO_CNG, SWITCH_RTP_FLAG_ENABLE_RTCP, SWITCH_RTP_FLAG_NACK, SWITCH_RTP_FLAG_OLD_FIR, SWITCH_RTP_FLAG_RTCP_MUX, SWITCH_RTP_FLAG_RTCP_PASSTHRU, SWITCH_RTP_FLAG_SECURE_SEND, SWITCH_RTP_FLAG_SECURE_SEND_MKI, SWITCH_RTP_FLAG_UDPTL, SWITCH_RTP_FLAG_USE_TIMER, SWITCH_RTP_FLAG_VIDEO, SWITCH_RTP_FLAG_VIDEO_FIRE_SEND_RTCP_EVENT, switch_rtp_test_flag(), switch_rtp_write_manual(), switch_send_rtcp_event(), switch_sockaddr_get_port(), switch_socket_sendto(), SWITCH_STATUS_GENERR, SWITCH_STATUS_SUCCESS, switch_rtp::tmmbn, switch_rtp::tmmbr, TRUE, switch_rtp::ts, switch_rtcp_sdes_unit_s::type, switch_rtcp_hdr_s::type, using_ice(), switch_rtcp_sdes_unit_s::value, switch_rtp::vb, switch_rtcp_ext_hdr_t::version, switch_rtcp_hdr_s::version, switch_rtcp_video_stats_t::video_in, and switch_rtp::write_timer.

Referenced by read_rtp_packet(), rtp_common_read(), and switch_rtp_ping().

 {
         int ret = 0;
         int rtcp_ok = 0, rtcp_cyclic = 0, rtcp_fb = 0, force_send_rr = 0;
         switch_time_t now = switch_micro_time_now();
         int rate = 0, nack_ttl = 0, nack_dup = 0; 
         uint32_t cur_nack[MAX_NACK] = { 0 };
         uint16_t seq = 0;
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] &&
                 rtp_session->flags[SWITCH_RTP_FLAG_AUTO_CNG] &&
                 rtp_session->send_msg.header.ts &&
                 rtp_session->cng_pt != INVALID_PT &&
                 (rtp_session->write_timer.samplecount - rtp_session->last_write_samplecount >= rtp_session->samples_per_interval * 60)) {
                 uint8_t data[10] = { 0 };
                 switch_frame_flag_t frame_flags = SFF_NONE;
                 data[0] = 65;
                 rtp_session->cn++;
 
                 get_next_write_ts(rtp_session, 0);
                 rtp_session->send_msg.header.ts = htonl(rtp_session->ts);
 
                 switch_rtp_write_manual(rtp_session, (void *) data, 2, 0, rtp_session->cng_pt, ntohl(rtp_session->send_msg.header.ts), &frame_flags);
 
                 if (switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {
                         rtp_session->last_write_samplecount = rtp_session->write_timer.samplecount;
                 }
         }
 
         rate = rtp_session->rtcp_interval;
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_NACK] && rtp_session->vb) {
                 int n;
                 for (n = 0; n < MAX_NACK; n++) {
                         uint32_t nack = switch_jb_pop_nack(rtp_session->vb);
 
                         if (!nack) break;
 
                         seq = ntohs(nack & 0xFFFF);
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "%s Got NACK [%u][0x%x] for seq %u\n",
                                         switch_core_session_get_name(rtp_session->session), nack, nack, seq);
 
                         cur_nack[nack_ttl++] = nack;
                 }
                 if (nack_ttl) {
                         rtcp_ok = 1;
                         rtcp_fb = 1;
                 }
         }
 
 
 
         if (rtp_session->rtcp_sent_packets < 4) {
                 rate = 4000;
         } else  {
                 if (rtp_session->pli_count || rtp_session->fir_count || rtp_session->tmmbr || rtp_session->tmmbn) {
                         //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "MARK BW/FIR ETC %d %d\n", rtp_session->pli_count, rtp_session->fir_count);
                         rtcp_ok = 1;
                         rtcp_fb = 1;
                 }
         }
 
         if (rtp_session->send_rr) {
                 rtp_session->send_rr = 0;
                 rtcp_ok = 1;
                 force_send_rr = 1;
         }
 
         //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "TIME CHECK %d > %d\n", (int)((now - rtp_session->rtcp_last_sent) / 1000), rate);
 
         if (!rtcp_ok && (!rtp_session->rtcp_last_sent || (int)((now - rtp_session->rtcp_last_sent) / 1000) > rate)) {
                 //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "TIME UP\n");
                 rtcp_cyclic = 1;
                 rtcp_ok = 1;
         }
 
         if (rtcp_ok && using_ice(rtp_session)) {
                 if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                         if (!rtp_session->ice.rready) {
                                 rtcp_ok = 0;
                         }
                 } else {
                         if (!rtp_session->rtcp_ice.rready) {
                                 rtcp_ok = 0;
                         }
                 }
         }
 
         //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "WTF %d %d %d %d\n", rate, rtp_session->rtcp_sent_packets, rtcp_ok, nack_ttl);
 
         if (rtp_session->rtcp_sock_output && rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP] && !rtp_session->flags[SWITCH_RTP_FLAG_RTCP_PASSTHRU] && rtcp_ok) {
                 switch_rtcp_numbers_t * stats = &rtp_session->stats.rtcp;
                 struct switch_rtcp_receiver_report *rr;
                 struct switch_rtcp_sender_report *sr;
                 struct switch_rtcp_report_block *rtcp_report_block = NULL;
                 switch_size_t rtcp_bytes = sizeof(struct switch_rtcp_hdr_s)+sizeof(uint32_t); /* add size of the packet header and the ssrc */
                 switch_rtcp_hdr_t *sdes;
                 uint8_t *p;
                 switch_size_t sdes_bytes = sizeof(struct switch_rtcp_hdr_s);
                 uint32_t *ssrc;
                 switch_rtcp_sdes_unit_t *unit;
                 switch_bool_t is_only_receiver = FALSE;
 
                 if (!rtcp_fb) {
                         rtp_session->rtcp_last_sent = now;
                         rtp_session->rtcp_sent_packets++;
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && 
                                 rtp_session->vb && rtcp_cyclic) {
                                 nack_dup = rtp_session->prev_nacks_inflight;
                                 rtp_session->prev_nacks_inflight = 0;
                 }
 
                 rtp_session->rtcp_send_msg.header.version = 2;
                 rtp_session->rtcp_send_msg.header.p = 0;
 
                 if ((switch_core_session_media_flow(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO) == SWITCH_MEDIA_FLOW_RECVONLY) ||
                                 switch_core_session_media_flow(rtp_session->session, SWITCH_MEDIA_TYPE_VIDEO) == SWITCH_MEDIA_FLOW_RECVONLY) {
                         is_only_receiver = TRUE;
                 }
                 if (!rtp_session->stats.rtcp.sent_pkt_count || is_only_receiver || force_send_rr) {
                         rtp_session->rtcp_send_msg.header.type = _RTCP_PT_RR; /* Receiver report */
                         rr=(struct switch_rtcp_receiver_report*) rtp_session->rtcp_send_msg.body;
                         rr->ssrc = htonl(rtp_session->ssrc);
                         rtcp_report_block = &rr->report_block;
                         rtcp_bytes += sizeof(struct switch_rtcp_report_block);
                         rtcp_generate_report_block(rtp_session, rtcp_report_block, nack_dup);
                         rtp_session->rtcp_send_msg.header.count = 1; /* reception report block count */
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "Sending RTCP RR (ssrc=%u)\n", rtp_session->ssrc);
                 } else {
                         struct switch_rtcp_sender_info *rtcp_sender_info;
                         rtp_session->rtcp_send_msg.header.type = _RTCP_PT_SR; /* Sender report */
                         sr = (struct switch_rtcp_sender_report*) rtp_session->rtcp_send_msg.body;
                         sr->ssrc = htonl(rtp_session->ssrc);
                         rtcp_sender_info = &sr->sender_info;
                         rtcp_generate_sender_info(rtp_session, rtcp_sender_info);
                         rtcp_bytes += sizeof(struct switch_rtcp_sender_info);
                         if (!rtcp_cyclic && rtcp_fb) {
                                  /* rtcp-fb only, don't send receive report block */
                                 rtp_session->rtcp_send_msg.header.count = 0;
                         } else {
                                 rtcp_report_block = &sr->report_block;
                                 rtcp_bytes += sizeof(struct switch_rtcp_report_block);
                                 rtcp_generate_report_block(rtp_session, rtcp_report_block, nack_dup);
                                 rtp_session->rtcp_send_msg.header.count = 1; /* reception report block count */
                                 stats->sent_pkt_count = 0;
                                 if ((!rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->flags[SWITCH_RTP_FLAG_AUDIO_FIRE_SEND_RTCP_EVENT]) ||
                                         (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->flags[SWITCH_RTP_FLAG_VIDEO_FIRE_SEND_RTCP_EVENT])) {
                                         switch_send_rtcp_event(rtp_session, sr, rtcp_report_block);
                                 }
                         }
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "Sending RTCP SR (ssrc=%u)\n", rtp_session->ssrc);
                 }
 
                 rtp_session->rtcp_send_msg.header.length = htons((uint16_t)(rtcp_bytes / 4) - 1);
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         if (rtp_session->pli_count) {
                                 switch_rtcp_ext_hdr_t *ext_hdr;
 
                                 p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                                 ext_hdr = (switch_rtcp_ext_hdr_t *) p;
 
                                 ext_hdr->version = 2;
                                 ext_hdr->p = 0;
                                 ext_hdr->fmt = _RTCP_PSFB_PLI;
                                 ext_hdr->pt = _RTCP_PT_PSFB;
 
                                 ext_hdr->send_ssrc = htonl(rtp_session->ssrc);
                                 ext_hdr->recv_ssrc = htonl(rtp_session->remote_ssrc);
                                 rtp_session->rtcp_vstats.video_in.pli_count++;
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "Sending RTCP PLI %u %u [%u]\n",
                                                                   rtp_session->ssrc, rtp_session->remote_ssrc, rtp_session->rtcp_vstats.video_in.pli_count);
 
                                 ext_hdr->length = htons((uint8_t)(sizeof(switch_rtcp_ext_hdr_t) / 4) - 1);
                                 rtcp_bytes += sizeof(switch_rtcp_ext_hdr_t);
                                 rtp_session->pli_count = 0;
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_NACK] && nack_ttl > 0) {
                                 int n = 0;
 
                                 rtp_session->rtcp_vstats.video_in.nack_count++;
                                 for (n = 0; n < nack_ttl; n++) {
                                         switch_rtcp_ext_hdr_t *ext_hdr;
                                         uint32_t *nack;
                                         p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                                         ext_hdr = (switch_rtcp_ext_hdr_t *) p;
 
                                         ext_hdr->version = 2;
                                         ext_hdr->p = 0;
                                         ext_hdr->fmt = _RTCP_RTPFB_NACK;
                                         ext_hdr->pt = _RTCP_PT_RTPFB;
                                         ext_hdr->send_ssrc = htonl(rtp_session->ssrc);
                                         ext_hdr->recv_ssrc = htonl(rtp_session->remote_ssrc);
                                         ext_hdr->length = htons(3);
                                         p += sizeof(switch_rtcp_ext_hdr_t);
                                         nack = (uint32_t *) p;
                                         *nack = cur_nack[n];
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Sending RTCP NACK %u [%d]\n",
                                                                           ntohs(*nack & 0xFFFF), rtp_session->rtcp_vstats.video_in.nack_count);
 
                                         rtcp_bytes += sizeof(switch_rtcp_ext_hdr_t) + sizeof(cur_nack[n]);
                                         cur_nack[n] = 0;
                                 }
                                 rtp_session->prev_nacks_inflight = n;
                         }
 
                         if (rtp_session->fir_count) {
                                 switch_rtcp_ext_hdr_t *ext_hdr;
                                 rtcp_fir_t *fir;
 
                                 if (switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_OLD_FIR)) {
                                         p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                                         ext_hdr = (switch_rtcp_ext_hdr_t *) p;
 
                                         ext_hdr->version = 2;
                                         ext_hdr->pt = _RTCP_PT_FIR;
                                         rtcp_bytes += sizeof(switch_rtcp_ext_hdr_t);
                                 }
 
 
                                 p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                                 ext_hdr = (switch_rtcp_ext_hdr_t *) p;
 
                                 p += sizeof(switch_rtcp_ext_hdr_t);
                                 fir = (rtcp_fir_t *) p;
 
                                 ext_hdr->version = 2;
                                 ext_hdr->p = 0;
                                 ext_hdr->fmt = _RTCP_PSFB_FIR;
                                 ext_hdr->pt = _RTCP_PT_PSFB;
 
                                 ext_hdr->send_ssrc = htonl(rtp_session->ssrc);
                                 ext_hdr->recv_ssrc = htonl(rtp_session->remote_ssrc);
 
                                 fir->ssrc = htonl(rtp_session->remote_ssrc);
                                 fir->seq = rtp_session->fir_seq;
                                 fir->r1 = fir->r2 = fir->r3 = 0;
 
                                 rtp_session->rtcp_vstats.video_in.fir_count++;
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Sending RTCP FIR SEQ %d [%u]\n", rtp_session->fir_seq, rtp_session->rtcp_vstats.video_in.fir_count);
 
                                 rtp_session->fir_seq++;
 
                                 ext_hdr->length = htons((uint8_t)((sizeof(switch_rtcp_ext_hdr_t) + sizeof(rtcp_fir_t)) / 4) - 1);
                                 rtcp_bytes += sizeof(switch_rtcp_ext_hdr_t) + sizeof(rtcp_fir_t);
                                 rtp_session->fir_count = 0;
                         }
 
                         //if (!rtp_session->tmmbr && rtp_session->cur_tmmbr) {
                         //      rtp_session->tmmbr = rtp_session->cur_tmmbr;
                         //}
 
                         while (rtp_session->tmmbr || rtp_session->tmmbn) {
                                 switch_rtcp_ext_hdr_t *ext_hdr;
                                 rtcp_tmmbx_t *tmmbx;
                                 uint32_t bps = 0;
                                 p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                                 ext_hdr = (switch_rtcp_ext_hdr_t *) p;
 
                                 p += sizeof(switch_rtcp_ext_hdr_t);
                                 tmmbx = (rtcp_tmmbx_t *) p;
 
                                 ext_hdr->version = 2;
                                 ext_hdr->p = 0;
                                 ext_hdr->pt = _RTCP_PT_RTPFB;
                                 ext_hdr->send_ssrc = htonl(rtp_session->ssrc);
                                 ext_hdr->recv_ssrc = 0;
 
                                 if (rtp_session->tmmbr) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Sending RTCP TMMBR %u\n", rtp_session->tmmbr);
                                         ext_hdr->fmt = _RTCP_RTPFB_TMMBR;
                                         bps = rtp_session->tmmbr;
                                         rtp_session->tmmbr = 0;
                                 } else {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Sending RTCP TMMBN %u\n", rtp_session->tmmbr);
                                         ext_hdr->fmt = _RTCP_RTPFB_TMMBN;
                                         bps = rtp_session->tmmbn;
                                         rtp_session->tmmbn = 0;
                                 }
 
                                 tmmbx->ssrc = htonl(rtp_session->remote_ssrc);
                                 calc_bw_exp(bps, 17, tmmbx);
 
                                 ext_hdr->length = htons((uint8_t)((sizeof(switch_rtcp_ext_hdr_t) + sizeof(rtcp_tmmbx_t)) / 4) - 1);
                                 rtcp_bytes += sizeof(switch_rtcp_ext_hdr_t) + sizeof(rtcp_tmmbx_t);
                         }
 
                 }
 
                 //SDES + CNAME
                 p = (uint8_t *) (&rtp_session->rtcp_send_msg) + rtcp_bytes;
                 sdes = (switch_rtcp_hdr_t *) p;
                 sdes->version = 2;
                 sdes->type = _RTCP_PT_SDES;
                 sdes->count = 1;
                 sdes->p = 0;
                 p = (uint8_t *) (sdes) + sdes_bytes;
                 ssrc = (uint32_t *) p;
                 *ssrc = htonl(rtp_session->ssrc);
                 sdes_bytes += sizeof(uint32_t);
 
 
                 p = (uint8_t *) (sdes) + sdes_bytes;
                 unit = (switch_rtcp_sdes_unit_t *) p;
                 unit->type = _RTCP_SDES_CNAME;
                 snprintf((char *)unit->value, 80, "%x", rtp_session->ssrc);
                 unit->length = strlen((char *)unit->value);
                 sdes_bytes += sizeof(switch_rtcp_sdes_unit_t) + unit->length;
 
 
                 p += sizeof(switch_rtcp_sdes_unit_t) + unit->length;
                 unit = (switch_rtcp_sdes_unit_t *) p;
                 unit->type = _RTCP_SDES_NOTE;
                 snprintf((char *)unit->value, 80, "FreeSWITCH.org -- Come to ClueCon.com");
                 unit->length = strlen((char *)unit->value);
                 sdes_bytes += sizeof(switch_rtcp_sdes_unit_t) + unit->length;
 
                 sdes_bytes ++;//END
 
                 sdes_bytes += 4 - (sdes_bytes % 4);
 
                 sdes->length = htons((uint16_t)(sdes_bytes / 4) - 1);
                 rtcp_bytes += sdes_bytes;
 
                 /* Prepare next report */
                 if (rtp_session->rtcp_send_msg.header.count) {
                         stats->last_rpt_cycle = stats->cycle;
                         stats->last_rpt_ext_seq = stats->high_ext_seq_recv;
                         stats->last_rpt_ts = rtp_session->write_timer.samplecount;
                         stats->period_pkt_count = 0;
                 }
 
 
 
 #ifdef ENABLE_SRTP
                 switch_mutex_lock(rtp_session->ice_mutex);
                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND]) {
                         int stat = 0;
                         int sbytes = (int) rtcp_bytes;
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_MKI]) {
                                 stat = srtp_protect_rtcp(rtp_session->send_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_send_msg.header, &sbytes);
                         } else {
                                 stat = srtp_protect_rtcp_mki(rtp_session->send_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_send_msg.header, &sbytes, 1, SWITCH_CRYPTO_MKI_INDEX);
                         }
 
                         if (stat) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error: SRTP RTCP protection failed with code %d\n", stat);
                                 switch_mutex_unlock(rtp_session->ice_mutex);
                                 goto end;
                         } else {
                                 rtcp_bytes = sbytes;
                         }
                 }
                 switch_mutex_unlock(rtp_session->ice_mutex);
 #endif
 
                 //#define DEBUG_EXTRA
 #ifdef DEBUG_EXTRA
                 {
                         const char *old_host;
                         char bufb[50];
                         old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->rtcp_remote_addr);
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_CRIT, "%s SEND %s RTCP %s:%d %ld\n",
                                                           rtp_session_name(rtp_session),
                                                           rtp_type(rtp_session),
                                                           old_host,
                                                           switch_sockaddr_get_port(rtp_session->rtcp_remote_addr),
                                                           rtcp_bytes);
                 }
 #endif
                 if (switch_socket_sendto(rtp_session->rtcp_sock_output, rtp_session->rtcp_remote_addr, 0, (void *)&rtp_session->rtcp_send_msg, &rtcp_bytes ) != SWITCH_STATUS_SUCCESS) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG,"RTCP packet not written\n");
                 } else {
                         rtp_session->stats.inbound.period_packet_count = 0;
                 }
         }
 
         if (rtp_session->ice.ice_user) {
                 if (ice_out(rtp_session, &rtp_session->ice, SWITCH_FALSE) == SWITCH_STATUS_GENERR) {
                         ret = -1;
                         goto end;
                 }
         }
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                 if (rtp_session->rtcp_ice.ice_user) {
                         if (ice_out(rtp_session, &rtp_session->rtcp_ice, SWITCH_FALSE) == SWITCH_STATUS_GENERR) {
                                 ret = -1;
                                 goto end;
                         }
                 }
         }
 
  end:
 
         return ret;
 }

◆ check_timeout()

static void check_timeout ( switch_rtp_t * rtp_session )

static

Definition at line 7279 of file switch_rtp.c.

References switch_rtp::last_media, switch_rtp::media_timeout, rtp_type, switch_rtp::session, SWITCH_CAUSE_MEDIA_TIMEOUT, switch_channel_execute_on(), switch_channel_hangup, SWITCH_CHANNEL_SESSION_LOG, switch_core_session_get_channel(), switch_core_session_get_name, SWITCH_LOG_DEBUG10, switch_log_printf(), and switch_micro_time_now().

Referenced by rtp_common_read().

 {
 
         switch_time_t now = switch_micro_time_now();
         uint32_t elapsed = 0;
 
         if (now >= rtp_session->last_media) {
                 elapsed = (now - rtp_session->last_media) / 1000;
         }
 
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10,
                                           "%s MEDIA TIMEOUT %s %d/%d\n", switch_core_session_get_name(rtp_session->session), rtp_type(rtp_session),
                                           elapsed, rtp_session->media_timeout);
 
         if (elapsed > rtp_session->media_timeout) {
                         switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
 
                         switch_channel_execute_on(channel, "execute_on_media_timeout");
                         switch_channel_hangup(channel, SWITCH_CAUSE_MEDIA_TIMEOUT);
         }
 }

◆ do_2833()

static void do_2833 ( switch_rtp_t * rtp_session )

static

Definition at line 5474 of file switch_rtp.c.

References switch_rtp::delay_samples, switch_dtmf_t::digit, switch_rtp::dtmf_data, switch_rtp_numbers_t::dtmf_packet_count, switch_rtp_rfc2833_data::dtmf_queue, switch_dtmf_t::duration, switch_rtp::flags, switch_rtp::interdigit_delay, switch_rtp::last_write_samplecount, switch_rtp::last_write_ts, switch_rtp::max_next_write_samplecount, memset(), switch_rtp::need_mark, switch_rtp::next_write_samplecount, switch_rtp_rfc2833_data::out_digit, switch_rtp_rfc2833_data::out_digit_dur, switch_rtp_rfc2833_data::out_digit_packet, switch_rtp_rfc2833_data::out_digit_sofar, switch_rtp_rfc2833_data::out_digit_sub_sofar, switch_rtp_stats_t::outbound, switch_rtp::queue_delay, switch_rtp_numbers_t::raw_bytes, RTP_BUG_CISCO_SKIP_MARK_BIT_2833, RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833, switch_rtp::rtp_bugs, switch_timer::samplecount, switch_rtp::samples_per_interval, switch_rtp::sending_dtmf, switch_rtp::seq, switch_rtp::session, set_dtmf_delay(), switch_rtp::stats, SWITCH_CHANNEL_SESSION_LOG, switch_char_to_rfc2833(), SWITCH_LOG_DEBUG, switch_log_printf(), switch_queue_size(), switch_queue_trypop(), SWITCH_RTP_FLAG_RESET, SWITCH_RTP_FLAG_USE_TIMER, switch_rtp_write_manual(), SWITCH_STATUS_SUCCESS, switch_rtp::te, switch_rtp::timer, switch_timer::timer_interface, switch_rtp_rfc2833_data::timestamp_dtmf, and switch_rtp::write_timer.

Referenced by rtp_common_read().

 {
         switch_frame_flag_t flags = 0;
         uint32_t samples = rtp_session->samples_per_interval;
 
         if (rtp_session->dtmf_data.out_digit_dur > 0) {
                 int x, loops = 1;
 
                 if (!rtp_session->last_write_ts) {
                         if (rtp_session->timer.timer_interface) {
                                 //switch_core_timer_sync(&rtp_session->write_timer);
                                 rtp_session->last_write_ts = rtp_session->write_timer.samplecount;
                         } else {
                                 rtp_session->last_write_ts = rtp_session->samples_per_interval;
                         }
                 }
 
                 rtp_session->dtmf_data.out_digit_sofar += samples;
                 rtp_session->dtmf_data.out_digit_sub_sofar += samples;
 
                 if (rtp_session->dtmf_data.out_digit_sub_sofar > 0xFFFF) {
                         rtp_session->dtmf_data.out_digit_sub_sofar = samples;
                         rtp_session->dtmf_data.timestamp_dtmf += 0xFFFF;
                 }
 
                 if (rtp_session->dtmf_data.out_digit_sofar >= rtp_session->dtmf_data.out_digit_dur) {
                         rtp_session->dtmf_data.out_digit_packet[1] |= 0x80;
                         loops = 3;
                 }
 
                 rtp_session->dtmf_data.out_digit_packet[2] = (unsigned char) (rtp_session->dtmf_data.out_digit_sub_sofar >> 8);
                 rtp_session->dtmf_data.out_digit_packet[3] = (unsigned char) rtp_session->dtmf_data.out_digit_sub_sofar;
 
                 for (x = 0; x < loops; x++) {
                         switch_size_t wrote = switch_rtp_write_manual(rtp_session,
                                                                                                                   rtp_session->dtmf_data.out_digit_packet, 4, 0,
                                                                                                                   rtp_session->te, rtp_session->dtmf_data.timestamp_dtmf, &flags);
 
                         rtp_session->stats.outbound.raw_bytes += wrote;
                         rtp_session->stats.outbound.dtmf_packet_count++;
 
                         if (loops == 1) {
                                 rtp_session->last_write_ts += samples;
 
                                 if (rtp_session->rtp_bugs & RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833) {
                                         rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts;
                                 }
                         }
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG, "Send %s packet for [%c] ts=%u dur=%d/%d/%d seq=%d lw=%u\n",
                                                           loops == 1 ? "middle" : "end", rtp_session->dtmf_data.out_digit,
                                                           rtp_session->dtmf_data.timestamp_dtmf,
                                                           rtp_session->dtmf_data.out_digit_sofar,
                                                           rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq, rtp_session->last_write_ts);
                 }
 
                 if (loops != 1) {
                         rtp_session->sending_dtmf = 0;
                         rtp_session->need_mark = 1;
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                                 //switch_core_timer_sync(&rtp_session->write_timer);
                                 rtp_session->last_write_samplecount = rtp_session->write_timer.samplecount;
                         }
 
                         rtp_session->dtmf_data.out_digit_dur = 0;
 
                         if (rtp_session->interdigit_delay) {
                                 set_dtmf_delay(rtp_session, rtp_session->interdigit_delay, rtp_session->interdigit_delay * 10);
                         }
 
                         return;
                 }
         }
 
         if (!rtp_session->dtmf_data.out_digit_dur && rtp_session->dtmf_data.dtmf_queue && switch_queue_size(rtp_session->dtmf_data.dtmf_queue)) {
                 void *pop;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                         //switch_core_timer_sync(&rtp_session->write_timer);
                         if (rtp_session->timer.samplecount < rtp_session->next_write_samplecount) {
                                 return;
                         }
 
                         if (rtp_session->timer.samplecount >= rtp_session->max_next_write_samplecount) {
                                 rtp_session->queue_delay = 0;
                         }
 
                 } else if (rtp_session->queue_delay) {
                         if (rtp_session->delay_samples >= rtp_session->samples_per_interval) {
                                 rtp_session->delay_samples -= rtp_session->samples_per_interval;
                         } else {
                                 rtp_session->delay_samples = 0;
                         }
 
                         if (!rtp_session->delay_samples) {
                                 rtp_session->queue_delay = 0;
                         }
                 }
 
                 if (rtp_session->queue_delay) {
                         return;
                 }
 
 
                 if (!rtp_session->sending_dtmf) {
                         rtp_session->sending_dtmf = 1;
                 }
 
                 if (switch_queue_trypop(rtp_session->dtmf_data.dtmf_queue, &pop) == SWITCH_STATUS_SUCCESS) {
                         switch_dtmf_t *rdigit = pop;
                         switch_size_t wrote;
 
                         if (rdigit->digit == 'w') {
                                 set_dtmf_delay(rtp_session, 500, 0);
                                 free(rdigit);
                                 return;
                         }
 
                         if (rdigit->digit == 'W') {
                                 set_dtmf_delay(rtp_session, 1000, 0);
                                 free(rdigit);
                                 return;
                         }
 
                         memset(rtp_session->dtmf_data.out_digit_packet, 0, 4);
                         rtp_session->dtmf_data.out_digit_sofar = samples;
                         rtp_session->dtmf_data.out_digit_sub_sofar = samples;
                         rtp_session->dtmf_data.out_digit_dur = rdigit->duration;
                         rtp_session->dtmf_data.out_digit = rdigit->digit;
                         rtp_session->dtmf_data.out_digit_packet[0] = (unsigned char) switch_char_to_rfc2833(rdigit->digit);
                         rtp_session->dtmf_data.out_digit_packet[1] = 13;
                         rtp_session->dtmf_data.out_digit_packet[2] = (unsigned char) (rtp_session->dtmf_data.out_digit_sub_sofar >> 8);
                         rtp_session->dtmf_data.out_digit_packet[3] = (unsigned char) rtp_session->dtmf_data.out_digit_sub_sofar;
 
 
                         rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts + samples;
                         rtp_session->last_write_ts = rtp_session->dtmf_data.timestamp_dtmf;
                         rtp_session->flags[SWITCH_RTP_FLAG_RESET] = 0;
 
                         wrote = switch_rtp_write_manual(rtp_session,
                                                                                         rtp_session->dtmf_data.out_digit_packet,
                                                                                         4,
                                                                                         rtp_session->rtp_bugs & RTP_BUG_CISCO_SKIP_MARK_BIT_2833 ? 0 : 1,
                                                                                         rtp_session->te, rtp_session->dtmf_data.timestamp_dtmf, &flags);
 
 
                         rtp_session->stats.outbound.raw_bytes += wrote;
                         rtp_session->stats.outbound.dtmf_packet_count++;
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG, "Send start packet for [%c] ts=%u dur=%d/%d/%d seq=%d lw=%u\n",
                                                           rtp_session->dtmf_data.out_digit,
                                                           rtp_session->dtmf_data.timestamp_dtmf,
                                                           rtp_session->dtmf_data.out_digit_sofar,
                                                           rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq, rtp_session->last_write_ts);
 
                         free(rdigit);
                 }
         }
 }

◆ do_dtls()

static int do_dtls	(	switch_rtp_t *	rtp_session,
		switch_dtls_t *	dtls
	)

static

Definition at line 3364 of file switch_rtp.c.

References switch_rtp_ice_t::addr, buf, switch_dtls_s::bytes, switch_rtp_ice_t::cand_responsive, cert, CF_AUDIO_VIDEO_BUNDLE, switch_dtls_s::data, switch_dtls_s::filter_bio, switch_rtp::from_addr, switch_rtp::ice, ICE_LITE, switch_rtp_ice_t::ice_user, MAX_DTLS_MTU, switch_dtls_s::read_bio, switch_rtp_ice_t::ready, switch_dtls_s::remote_addr, switch_dtls_s::remote_fp, switch_rtp_ice_t::rready, switch_dtls_s::rtp_session, rtp_type, switch_rtp::session, switch_dtls_s::sock_output, switch_dtls_s::ssl, switch_dtls_s::state, switch_assert, SWITCH_CHANNEL_SESSION_LOG, switch_channel_test_flag(), switch_cmp_addr(), switch_core_cert_extract_fingerprint(), switch_core_cert_verify(), switch_core_session_get_channel(), switch_get_addr(), SWITCH_LOG_DEBUG5, SWITCH_LOG_DEBUG6, SWITCH_LOG_ERROR, switch_log_printf(), switch_socket_sendto(), SWITCH_STATUS_SUCCESS, SWITCH_TRUE, switch_rtp_ice_t::type, and switch_dtls_s::write_bio.

Referenced by read_rtcp_packet(), and read_rtp_packet().

 {
         int r = 0, ret = 0, len;
         switch_size_t bytes;
         unsigned char buf[MAX_DTLS_MTU] = "";
         uint8_t is_ice = rtp_session->ice.ice_user ? 1 : 0;
         int ready = is_ice ? (rtp_session->ice.rready && rtp_session->ice.ready) : 1;
         int pending;
 
         if (switch_channel_test_flag(switch_core_session_get_channel(rtp_session->session), CF_AUDIO_VIDEO_BUNDLE)) {
                 if (rtp_session->ice.ice_user && rtp_session->ice.rready == 1) ready = 1;
         }
 
         if (!dtls->bytes && !ready) {
                 return 0;
         }
 
         if (is_ice && !(rtp_session->ice.type & ICE_LITE) && !rtp_session->ice.cand_responsive) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG6, "Got DTLS packet but candidate is not responsive\n");
 
                 return 0;
         }
 
         if (is_ice && !switch_cmp_addr(rtp_session->from_addr, rtp_session->ice.addr, SWITCH_TRUE)) {
                 char tmp_buf1[80] = "";
                 char tmp_buf2[80] = "";
                 const char *host_from = switch_get_addr(tmp_buf1, sizeof(tmp_buf1), rtp_session->from_addr);
                 const char *host_ice_cur_addr = switch_get_addr(tmp_buf2, sizeof(tmp_buf2), rtp_session->ice.addr);
 
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "Got DTLS packet from [%s] whilst current ICE negotiated address is [%s]. Ignored.\n", host_from, host_ice_cur_addr);
 
                 return 0;
         }
 
         if (dtls->bytes > 0 && dtls->data) {
                 ret = BIO_write(dtls->read_bio, dtls->data, (int)dtls->bytes);
                 if (ret <= 0) {
                         ret = SSL_get_error(dtls->ssl, ret);
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s DTLS packet decode err: SSL err %d\n", rtp_type(rtp_session), ret);
                 } else if (ret != (int)dtls->bytes) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s DTLS packet decode err: read %d bytes instead of %d\n", rtp_type(rtp_session), ret, (int)dtls->bytes);
                 }
         }
 
         if (dtls_states[dtls->state]) {
                 r = dtls_states[dtls->state](rtp_session, dtls);
         }
 
         while ((pending = BIO_ctrl_pending(dtls->filter_bio)) > 0) {
                 switch_assert(pending <= sizeof(buf));
 
                 len = BIO_read(dtls->write_bio, buf, pending);
                 if (len > 0) {
                         bytes = len;
                         ret = switch_socket_sendto(dtls->sock_output, dtls->remote_addr, 0, (void *)buf, &bytes);
 
                         if (ret != SWITCH_STATUS_SUCCESS) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s DTLS packet not written to socket: %d\n", rtp_type(rtp_session), ret);
                         } else if (bytes != len) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s DTLS packet write err: written %d bytes instead of %d\n", rtp_type(rtp_session), (int)bytes, len);
                         }
                 } else {
                         ret = SSL_get_error(dtls->ssl, len);
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s DTLS packet encode err: SSL err %d\n", rtp_type(rtp_session), ret);
                 }
         }
 
         return r;
 }

◆ do_flush()

static switch_size_t do_flush	(	switch_rtp_t *	rtp_session,
		int	force,
		switch_size_t	bytes_in
	)

static

Definition at line 5678 of file switch_rtp.c.

References FALSE, switch_rtp::flags, switch_rtp_numbers_t::flush_packet_count, switch_rtp::from_addr, handle_rfc2833(), rtp_msg_t::header, switch_rtp_stats_t::inbound, switch_rtp::jb, jb_valid(), switch_rtp::last_media, switch_rtp::last_rtp_hdr, switch_rtp::media_timeout, switch_rtp_numbers_t::packet_count, switch_rtp::pause_jb, switch_rtp_numbers_t::raw_bytes, READ_DEC, READ_INC, switch_rtp::recv_msg, switch_rtp::recv_te, reset_jitter_seq(), rtp_header_len, switch_rtp::session, switch_rtp::sock_input, switch_rtp::stats, switch_channel_get_name(), SWITCH_CHANNEL_LOG, SWITCH_CHANNEL_SESSION_LOG, switch_core_session_get_channel(), switch_core_session_request_video_refresh, switch_jb_reset(), SWITCH_LOG_CONSOLE, SWITCH_LOG_ERROR, switch_log_printf(), switch_micro_time_now(), switch_rtp_clear_flag(), SWITCH_RTP_FLAG_DEBUG_RTP_READ, SWITCH_RTP_FLAG_DTMF_ON, SWITCH_RTP_FLAG_NOBLOCK, SWITCH_RTP_FLAG_PROXY_MEDIA, SWITCH_RTP_FLAG_UDPTL, SWITCH_RTP_FLAG_VIDEO, switch_rtp_ready(), switch_rtp_set_flag(), SWITCH_SO_NONBLOCK, switch_socket_opt_set(), switch_socket_recvfrom(), TRUE, switch_rtp::vb, and switch_rtp::vbw.

Referenced by rtp_common_read().

 {
         int was_blocking = 0;
         switch_size_t bytes;
         switch_size_t bytes_out = 0;
 
         if (!switch_rtp_ready(rtp_session)) {
                 return 0;
         }
 
         reset_jitter_seq(rtp_session);
 
         if (!force) {
                 if ((rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) ||
                         rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] ||
                         rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] ||
                         rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON]
                         ) {
                         return bytes_in;
                 }
         }
 
         READ_INC(rtp_session);
 
         if (switch_rtp_ready(rtp_session) ) {
 
                 if (rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                         //switch_jb_reset(rtp_session->jb);
                         bytes_out = bytes_in;
                         goto end;
                 }
 
                 if (rtp_session->vbw) {
                         switch_jb_reset(rtp_session->vbw);
                 }
 
                 if (rtp_session->vb) {
                         //switch_jb_reset(rtp_session->vb);
                         bytes_out = bytes_in;
                         goto end;
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session),
                                                           SWITCH_LOG_CONSOLE, "%s FLUSH\n",
                                                           rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "NoName"
                                                           );
                 }
 
                 if (!rtp_session->flags[SWITCH_RTP_FLAG_NOBLOCK]) {
                         was_blocking = 1;
                         switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_NOBLOCK);
                         switch_socket_opt_set(rtp_session->sock_input, SWITCH_SO_NONBLOCK, TRUE);
                 }
 
                 // before processing/flushing packets, if current packet is rfc2833, handle it (else it would be lost)
                 if (bytes_in > rtp_header_len && rtp_session->last_rtp_hdr.version == 2 && rtp_session->last_rtp_hdr.pt == rtp_session->recv_te) {
                     int do_cng = 0;
 #ifdef DEBUG_2833
                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "*** Handling current RTP packet before flushing. seq=%u ***\n", ntohs(rtp_session->last_rtp_hdr.seq));
 #endif
                     handle_rfc2833(rtp_session, bytes_in, &do_cng);
                 }
 
                 do {
                         if (switch_rtp_ready(rtp_session)) {
                                 bytes = sizeof(rtp_msg_t);
                                 switch_socket_recvfrom(rtp_session->from_addr, rtp_session->sock_input, 0, (void *) &rtp_session->recv_msg, &bytes);
 
                                 if (bytes) {
                                         int do_cng = 0;
 
                                         if (rtp_session->media_timeout) {
                                                 rtp_session->last_media = switch_micro_time_now();
                                         }
 
                                         /* Make sure to handle RFC2833 packets, even if we're flushing the packets */
                                         if (bytes > rtp_header_len && rtp_session->recv_msg.header.version == 2 && rtp_session->recv_msg.header.pt == rtp_session->recv_te) {
                                                 rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
                                                 handle_rfc2833(rtp_session, bytes, &do_cng);
 #ifdef DEBUG_2833
                                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "*** RTP packet handled in flush loop %d ***\n", do_cng);
 #endif
                                         }
 
                                         rtp_session->stats.inbound.raw_bytes += bytes;
                                         rtp_session->stats.inbound.flush_packet_count++;
                                         rtp_session->stats.inbound.packet_count++;
                                 }
                         } else {
                                 break;
                         }
                 } while (bytes > 0);
 
 #ifdef DEBUG_2833
         if (flushed) {
             switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "*** do_flush: total flushed packets: %ld ***\n",(long)flushed);
         }
 #endif
 
 
                 if (was_blocking && switch_rtp_ready(rtp_session)) {
                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_NOBLOCK);
                         switch_socket_opt_set(rtp_session->sock_input, SWITCH_SO_NONBLOCK, FALSE);
                 }
 
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->session) {
                         //int type = 1; // sum flags: 1 encoder; 2; decoder
                         //switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_VIDEO, SWITCH_IO_READ, SCC_VIDEO_RESET, SCCT_INT, (void *)&type, NULL, NULL);
                         switch_core_session_request_video_refresh(rtp_session->session);
                 }
         }
 
  end:
 
         READ_DEC(rtp_session);
 
         return bytes_out;
 }

◆ do_mos()

static void do_mos ( switch_rtp_t * rtp_session )

static

Definition at line 1571 of file switch_rtp.c.

Referenced by check_jitter(), rtp_common_read(), switch_rtp_get_stats(), and switch_rtp_sync_stats().

                                               {
         int R;
         
         if ((switch_size_t)rtp_session->stats.inbound.recved < rtp_session->stats.inbound.flaws) {
                 rtp_session->stats.inbound.flaws = 0;
         }
 
         if (rtp_session->stats.inbound.recved > 0 &&
                 rtp_session->stats.inbound.flaws && (rtp_session->stats.inbound.last_flaw != rtp_session->stats.inbound.flaws)) {
                 
                 if (rtp_session->consecutive_flaws++) {
                         int penalty = rtp_session->consecutive_flaws;
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "%s %s %d consecutive flaws, adding %d flaw penalty\n",
                                                           rtp_session_name(rtp_session), rtp_type(rtp_session),
                                                           rtp_session->consecutive_flaws, penalty);
                         rtp_session->bad_stream++;
                         rtp_session->stats.inbound.flaws += penalty;
                         rtp_session->stats.inbound.last_flaw = rtp_session->stats.inbound.flaws;
                         
                         if (rtp_session->stats.inbound.error_log) {
                                 rtp_session->stats.inbound.error_log->flaws += penalty;
                                 rtp_session->stats.inbound.error_log->consecutive_flaws++;
                         }
                 }
         } else {
                 rtp_session->consecutive_flaws = 0;
         }
 
         R = (int)((double)((double)(rtp_session->stats.inbound.recved - rtp_session->stats.inbound.flaws) / (double)rtp_session->stats.inbound.recved) * 100.0);
 
         if (R < 0 || R > 100) R = 100;
 
         rtp_session->stats.inbound.R = R;
         rtp_session->stats.inbound.mos = 1 + (0.035) * R + (.000007) * R * (R-60) * (100-R);
                 
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "%s %s stat %0.2f %ld/%d flaws: %ld mos: %0.2f v: %0.2f %0.2f/%0.2f\n",
                                           rtp_session_name(rtp_session),
                                           rtp_type(rtp_session),
                                           rtp_session->stats.inbound.R,
                                           (long int)(rtp_session->stats.inbound.recved - rtp_session->stats.inbound.flaws), rtp_session->stats.inbound.recved,
                                           (long int)rtp_session->stats.inbound.flaws,
                                           rtp_session->stats.inbound.mos,
                                           rtp_session->stats.inbound.variance,
                                           rtp_session->stats.inbound.min_variance,
                                           rtp_session->stats.inbound.max_variance
                                           );
         
 }

◆ dtls_bio_filter_ctrl()

static long dtls_bio_filter_ctrl	(	BIO *	bio,
		int	cmd,
		long	num,
		void *	ptr
	)

static

Definition at line 3605 of file switch_rtp.c.

References dtls_bio_filter_free(), dtls_bio_filter_new(), dtls_bio_filter_write(), dtls_bio_filter::mtu, dtls_bio_filter::mutex, packet_list_s::next, dtls_bio_filter::packets, packet_list_s::size, SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, switch_log_printf(), switch_mutex_lock(), switch_mutex_unlock(), dtls_bio_filter::tail, and dtls_bio_filter::unused.

Referenced by switch_rtp_dtls_init().

                                                                          {
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         dtls_bio_filter *filter = (dtls_bio_filter *)bio->ptr;
 #else
         dtls_bio_filter *filter = (dtls_bio_filter *)BIO_get_data(bio);
 #endif
 
         switch(cmd) {
         case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
                 return 1200;
         case BIO_CTRL_DGRAM_SET_MTU:
                 filter->mtu = num;
                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "Setting MTU: %ld\n", filter->mtu);
                 return num;
         case BIO_CTRL_FLUSH:
                 return 1;
         case BIO_CTRL_DGRAM_QUERY_MTU:
                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "Advertizing MTU: %ld\n", filter->mtu);
                 return filter->mtu;
         case BIO_CTRL_WPENDING:
                 return 0L;
         case BIO_CTRL_PENDING: {
                 int pending = 0;
                 packet_list_t *top;
 
                 if (filter == NULL) {
                         return 0;
                 }
 
                 switch_mutex_lock(filter->mutex);
                 if ((top = filter->packets)) {
                         filter->packets = filter->packets->next;
                         
                         if (top == filter->tail || !filter->packets) {
                                 filter->tail = NULL;
                         }
                         
                         pending = top->size;
                         top->next = filter->unused;
                         filter->unused = top;
                 }
                 switch_mutex_unlock(filter->mutex);
 
                 return pending;
         }
         default:
                 //switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "dtls_bio_filter_ctrl: %d\n", cmd);
                 break;
         }
         return 0;
 }

◆ dtls_bio_filter_free()

static int dtls_bio_filter_free ( BIO * bio )

static

Definition at line 3523 of file switch_rtp.c.

References pool, dtls_bio_filter::pool, and switch_core_destroy_memory_pool.

Referenced by dtls_bio_filter_ctrl(), and switch_rtp_dtls_init().

                                           {
         dtls_bio_filter *filter;
 
         if (bio == NULL) {
                 return 0;
         }
  
         /* Get rid of the filter state */
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         filter = (dtls_bio_filter *)bio->ptr;
 #else
         filter = (dtls_bio_filter *)BIO_get_data(bio);
 #endif
 
         if (filter != NULL) {
                 switch_memory_pool_t *pool = filter->pool;
                 switch_core_destroy_memory_pool(&pool);
                 pool = NULL;
                 filter = NULL;
         }
 
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         bio->ptr = NULL;
         bio->init = 0;
         bio->flags = 0;
 #else
         BIO_set_init(bio, 0);
         BIO_set_data(bio, NULL);
         BIO_clear_flags(bio, ~0);
 #endif
         return 1;
 }

◆ dtls_bio_filter_new()

static int dtls_bio_filter_new ( BIO * bio )

static

Definition at line 3497 of file switch_rtp.c.

References dtls_bio_filter::mutex, dtls_bio_filter::packets, pool, dtls_bio_filter::pool, switch_core_alloc, switch_core_new_memory_pool, switch_mutex_init(), and SWITCH_MUTEX_NESTED.

Referenced by dtls_bio_filter_ctrl(), and switch_rtp_dtls_init().

                                          {
         /* Create a filter state struct */
         dtls_bio_filter *filter;
         switch_memory_pool_t *pool;
 
         switch_core_new_memory_pool(&pool);
         filter = switch_core_alloc(pool, sizeof(*filter));
         filter->pool = pool;
 
         filter->packets = NULL;
         switch_mutex_init(&filter->mutex, SWITCH_MUTEX_NESTED, filter->pool);
  
         /* Set the BIO as initialized */
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         bio->init = 1;
         bio->ptr = filter;
         bio->flags = 0;
 #else
         BIO_set_init(bio, 1);
         BIO_set_data(bio, filter);
         BIO_clear_flags(bio, ~0);
 #endif
         
         return 1;
 }

◆ dtls_bio_filter_write()

static int dtls_bio_filter_write	(	BIO *	bio,
		const char *	in,
		int	inl
	)

static

Definition at line 3556 of file switch_rtp.c.

References dtls_bio_filter::mutex, packet_list_s::next, dtls_bio_filter::packets, dtls_bio_filter::pool, packet_list_s::size, SWITCH_CHANNEL_LOG, switch_core_alloc, SWITCH_LOG_DEBUG1, switch_log_printf(), switch_mutex_lock(), switch_mutex_unlock(), dtls_bio_filter::tail, and dtls_bio_filter::unused.

Referenced by dtls_bio_filter_ctrl(), and switch_rtp_dtls_init().

                                                                     {
         long ret;
         dtls_bio_filter *filter;
         
         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "dtls_bio_filter_write: %p, %d\n", (void *)in, inl);
         /* Forward data to the write BIO */
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         ret = BIO_write(bio->next_bio, in, inl);
 #else
         ret = BIO_write(BIO_next(bio), in, inl);
 #endif
         
         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "  -- %ld\n", ret);
  
         /* Keep track of the packet, as we'll advertize them one by one after a pending check */
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
         filter = (dtls_bio_filter *)bio->ptr;
 #else
         filter = (dtls_bio_filter *)BIO_get_data(bio);
 #endif
 
         if (filter != NULL) {
                 packet_list_t *node;
 
                 switch_mutex_lock(filter->mutex);
                 if (filter->unused) {
                         node = filter->unused;
                         node->next = NULL;
                         filter->unused = filter->unused->next;
                 } else {
                         node = switch_core_alloc(filter->pool, sizeof(*node));
                 }
 
                 node->size = ret;
 
                 if (filter->tail) {
                         filter->tail->next = node;
                 } else {
                         filter->packets = node;
                 }
 
                 filter->tail = node;
 
                 switch_mutex_unlock(filter->mutex);
                 //switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "New list length: %d\n", g_list_length(filter->packets));
         }
         return ret;
 }

◆ dtls_state_fail()

static int dtls_state_fail	(	switch_rtp_t *	rtp_session,
		switch_dtls_t *	dtls
	)

static

Definition at line 3309 of file switch_rtp.c.

References switch_rtp::session, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER, switch_channel_hangup, and switch_core_session_get_channel().

 {
         if (rtp_session->session) {
                 switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
                 switch_channel_hangup(channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
         }
 
         return -1;
 }

◆ dtls_state_handshake()

static int dtls_state_handshake	(	switch_rtp_t *	rtp_session,
		switch_dtls_t *	dtls
	)

static

Definition at line 3320 of file switch_rtp.c.

References DS_FAIL, DS_SETUP, dtls_set_state, rtp_type, switch_rtp::session, switch_dtls_s::ssl, SWITCH_CHANNEL_SESSION_LOG, switch_log_printf(), and SWITCH_LOG_WARNING.

 {
         int ret;
 
         if ((ret = SSL_do_handshake(dtls->ssl)) != 1){
                 switch((ret = SSL_get_error(dtls->ssl, ret))){
                 case SSL_ERROR_WANT_READ:
                 case SSL_ERROR_WANT_WRITE:
                 case SSL_ERROR_NONE:
                         break;
                 default:
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "%s Handshake failure %d. This may happen when you use legacy DTLS v1.0 (legacyDTLS channel var is set) but endpoint requires DTLS v1.2.\n", rtp_type(rtp_session), ret);
                         dtls_set_state(dtls, DS_FAIL);
                         return -1;
                 }
         }
 
         if (SSL_is_init_finished(dtls->ssl)) {
                 dtls_set_state(dtls, DS_SETUP);
         }
 
         return 0;
 }

◆ dtls_state_names()

static const char* dtls_state_names ( dtls_state_t s )

static

Definition at line 3200 of file switch_rtp.c.

References DS_INVALID.

 {
         if (s > DS_INVALID) {
                 s = DS_INVALID;
         }
 
         return dtls_state_names_t[s];
 }

◆ dtls_state_ready()

static int dtls_state_ready	(	switch_rtp_t *	rtp_session,
		switch_dtls_t *	dtls
	)

static

Definition at line 3292 of file switch_rtp.c.

References switch_rtp::flags, switch_dtls_s::new_state, switch_rtp::session, switch_core_session_get_partner, switch_core_session_request_video_refresh, switch_core_session_rwunlock(), SWITCH_RTP_FLAG_VIDEO, and SWITCH_STATUS_SUCCESS.

 {
 
         if (dtls->new_state) {
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         switch_core_session_t *other_session;
 
                         if (rtp_session->session && switch_core_session_get_partner(rtp_session->session, &other_session) == SWITCH_STATUS_SUCCESS) {
                                 switch_core_session_request_video_refresh(other_session);
                                 switch_core_session_rwunlock(other_session);
                         }
                 }
                 dtls->new_state = 0;
         }
         return 0;
 }

◆ dtls_state_setup()

static int dtls_state_setup	(	switch_rtp_t *	rtp_session,
		switch_dtls_t *	dtls
	)

static

Definition at line 3215 of file switch_rtp.c.

References AES_CM_128_HMAC_SHA1_80, cert, cr_keylen, cr_kslen, cr_saltlen, secure_settings_s::crypto_type, DS_FAIL, DS_READY, switch_rtp::dtls, dtls_set_state, DTLS_TYPE_CLIENT, DTLS_TYPE_SERVER, secure_settings_s::local_raw_key, memset(), switch_dtls_s::remote_fp, secure_settings_s::remote_raw_key, switch_rtp::rtcp_dtls, rtp_type, switch_rtp::session, switch_dtls_s::ssl, SWITCH_CHANNEL_SESSION_LOG, switch_core_cert_extract_fingerprint(), switch_core_cert_verify(), SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), switch_rtp_add_crypto_key(), SWITCH_RTP_CRYPTO_RECV, SWITCH_RTP_CRYPTO_RECV_RTCP, SWITCH_RTP_CRYPTO_SEND, SWITCH_RTP_CRYPTO_SEND_RTCP, and switch_dtls_s::type.

 {
         X509 *cert;
         switch_secure_settings_t        ssec;   /* Used just to wrap over params in a call to switch_rtp_add_crypto_key. */
         int r = 0;
 
         uint8_t raw_key_data[cr_kslen * 2];
         unsigned char local_key_buf[cr_kslen];
         unsigned char remote_key_buf[cr_kslen];
 
         memset(&ssec, 0, sizeof(ssec));
         memset(&raw_key_data, 0, cr_kslen * 2 * sizeof(uint8_t));
         memset(&local_key_buf, 0, cr_kslen * sizeof(unsigned char));
         memset(&remote_key_buf, 0, cr_kslen * sizeof(unsigned char));
 
         if ((dtls->type & DTLS_TYPE_SERVER)) {
                 r = 1;
         } else if ((cert = SSL_get_peer_certificate(dtls->ssl))) {
                 switch_core_cert_extract_fingerprint(cert, dtls->remote_fp);
                 r = switch_core_cert_verify(dtls->remote_fp);
                 X509_free(cert);
         }
 
         if (!r) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s Fingerprint Verification Failed!\n", rtp_type(rtp_session));
                 dtls_set_state(dtls, DS_FAIL);
                 return -1;
         } else {
                 unsigned char *local_key, *remote_key, *local_salt, *remote_salt;
 
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "%s Fingerprint Verified.\n", rtp_type(rtp_session));
 
 #ifdef HAVE_OPENSSL_DTLS_SRTP
                 if (!SSL_export_keying_material(dtls->ssl, raw_key_data, sizeof(raw_key_data), "EXTRACTOR-dtls_srtp", 19, NULL, 0, 0)) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "%s Key material export failure\n", rtp_type(rtp_session));
                         dtls_set_state(dtls, DS_FAIL);
                         return -1;
                 }
 #else
                 return -1;
 #endif
 
                 if ((dtls->type & DTLS_TYPE_CLIENT)) {
                         local_key = raw_key_data;
                         remote_key = local_key + cr_keylen;
                         local_salt = remote_key + cr_keylen;
                         remote_salt = local_salt + cr_saltlen;
 
                 } else {
                         remote_key = raw_key_data;
                         local_key = remote_key + cr_keylen;
                         remote_salt = local_key + cr_keylen;
                         local_salt = remote_salt + cr_saltlen;
                 }
 
                 memcpy(ssec.local_raw_key, local_key, cr_keylen);
                 memcpy(ssec.local_raw_key + cr_keylen, local_salt, cr_saltlen);
 
                 memcpy(ssec.remote_raw_key, remote_key, cr_keylen);
                 memcpy(ssec.remote_raw_key + cr_keylen, remote_salt, cr_saltlen);
 
                 ssec.crypto_type = AES_CM_128_HMAC_SHA1_80;
 
                 if (dtls == rtp_session->rtcp_dtls && rtp_session->rtcp_dtls != rtp_session->dtls) {
                         switch_rtp_add_crypto_key(rtp_session, SWITCH_RTP_CRYPTO_SEND_RTCP, 0, &ssec);
                         switch_rtp_add_crypto_key(rtp_session, SWITCH_RTP_CRYPTO_RECV_RTCP, 0, &ssec);
                 } else {
                         switch_rtp_add_crypto_key(rtp_session, SWITCH_RTP_CRYPTO_SEND, 0, &ssec);
                         switch_rtp_add_crypto_key(rtp_session, SWITCH_RTP_CRYPTO_RECV, 0, &ssec);
                 }
         }
 
         dtls_set_state(dtls, DS_READY);
 
         return 0;
 }

◆ enable_local_rtcp_socket()

static switch_status_t enable_local_rtcp_socket	(	switch_rtp_t *	rtp_session,
		const char **	err
	)

static

Definition at line 2717 of file switch_rtp.c.

References switch_rtp::flags, switch_rtp::from_addr, switch_rtp::local_host_str, switch_rtp::local_port, switch_rtp::pool, switch_rtp::rtcp_from_addr, switch_rtp::rtcp_local_addr, switch_rtp::rtcp_read_pollfd, switch_rtp::rtcp_sock_input, switch_rtp::session, SWITCH_CHANNEL_SESSION_LOG, switch_get_addr(), SWITCH_LOG_ERROR, switch_log_printf(), SWITCH_POLLERR, SWITCH_POLLIN, SWITCH_RTP_FLAG_ENABLE_RTCP, SWITCH_SO_REUSEADDR, switch_sockaddr_get_family(), switch_sockaddr_get_port(), switch_sockaddr_info_get(), switch_socket_bind(), switch_socket_close(), switch_socket_create(), switch_socket_create_pollset(), switch_socket_opt_set(), SWITCH_STATUS_FALSE, SWITCH_STATUS_SUCCESS, and SWITCH_UNSPEC.

Referenced by switch_rtp_activate_rtcp(), and switch_rtp_set_local_address().

                                                                                              {
 
         const char *host = rtp_session->local_host_str;
         switch_port_t port = rtp_session->local_port;
         switch_socket_t *rtcp_new_sock = NULL, *rtcp_old_sock = NULL;
         switch_status_t status = SWITCH_STATUS_SUCCESS;
         char bufa[50];
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                 if (switch_sockaddr_info_get(&rtp_session->rtcp_local_addr, host, SWITCH_UNSPEC, port+1, 0, rtp_session->pool) != SWITCH_STATUS_SUCCESS) {
                         *err = "RTCP Local Address Error!";
                         goto done;
                 }
 
                 if (switch_socket_create(&rtcp_new_sock, switch_sockaddr_get_family(rtp_session->rtcp_local_addr), SOCK_DGRAM, 0, rtp_session->pool) != SWITCH_STATUS_SUCCESS) {
                         *err = "RTCP Socket Error!";
                         goto done;
                 }
 
                 if (switch_socket_opt_set(rtcp_new_sock, SWITCH_SO_REUSEADDR, 1) != SWITCH_STATUS_SUCCESS) {
                         *err = "RTCP Socket Error!";
                         goto done;
                 }
 
                 if (switch_socket_bind(rtcp_new_sock, rtp_session->rtcp_local_addr) != SWITCH_STATUS_SUCCESS) {
                         *err = "RTCP Bind Error!";
                         goto done;
                 }
 
                 if (switch_sockaddr_info_get(&rtp_session->rtcp_from_addr, switch_get_addr(bufa, sizeof(bufa), rtp_session->from_addr),
                                                                                          SWITCH_UNSPEC, switch_sockaddr_get_port(rtp_session->from_addr) + 1, 0, rtp_session->pool) != SWITCH_STATUS_SUCCESS) {
                         *err = "RTCP From Address Error!";
                         goto done;
                 }
 
                 rtcp_old_sock = rtp_session->rtcp_sock_input;
                 rtp_session->rtcp_sock_input = rtcp_new_sock;
                 rtcp_new_sock = NULL;
 
                 switch_socket_create_pollset(&rtp_session->rtcp_read_pollfd, rtp_session->rtcp_sock_input, SWITCH_POLLIN | SWITCH_POLLERR, rtp_session->pool);
 
  done:
 
                 if (*err) {
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error allocating rtcp [%s]\n", *err);
                         status = SWITCH_STATUS_FALSE;
                 }
 
                 if (rtcp_new_sock) {
                         switch_socket_close(rtcp_new_sock);
                 }
 
                 if (rtcp_old_sock) {
                         switch_socket_close(rtcp_old_sock);
                 }
         } else {
                 status = SWITCH_STATUS_FALSE;
         }
 
         return status;
 }

◆ enable_remote_rtcp_socket()

static switch_status_t enable_remote_rtcp_socket	(	switch_rtp_t *	rtp_session,
		const char **	err
	)

static

Definition at line 2673 of file switch_rtp.c.

References switch_rtp::eff_remote_host_str, switch_rtp::flags, switch_rtp::pool, switch_rtp::remote_rtcp_port, switch_rtp::rtcp_local_addr, switch_rtp::rtcp_remote_addr, switch_rtp::rtcp_sock_input, switch_rtp::rtcp_sock_output, switch_rtp::session, SWITCH_CHANNEL_SESSION_LOG, switch_get_addr(), SWITCH_LOG_DEBUG, switch_log_printf(), SWITCH_RTP_FLAG_ENABLE_RTCP, switch_sockaddr_get_family(), switch_sockaddr_info_get(), switch_socket_close(), switch_socket_create(), SWITCH_STATUS_FALSE, SWITCH_STATUS_SUCCESS, and SWITCH_UNSPEC.

Referenced by read_rtcp_packet(), and switch_rtp_activate_rtcp().

                                                                                               {
 
         switch_status_t status = SWITCH_STATUS_SUCCESS;
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
 
                 if (switch_sockaddr_info_get(&rtp_session->rtcp_remote_addr, rtp_session->eff_remote_host_str, SWITCH_UNSPEC,
                                                                          rtp_session->remote_rtcp_port, 0, rtp_session->pool) != SWITCH_STATUS_SUCCESS || !rtp_session->rtcp_remote_addr) {
                         *err = "RTCP Remote Address Error!";
                         return SWITCH_STATUS_FALSE;
                 } else {
                         const char *host;
                         char bufa[50];
 
                         host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtcp_remote_addr);
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG,
                                                           "Setting RTCP remote addr to %s:%d %d\n", host, rtp_session->remote_rtcp_port, rtp_session->rtcp_remote_addr->family);
                 }
 
                 if (rtp_session->rtcp_sock_input && switch_sockaddr_get_family(rtp_session->rtcp_remote_addr) ==
                         switch_sockaddr_get_family(rtp_session->rtcp_local_addr)) {
                         rtp_session->rtcp_sock_output = rtp_session->rtcp_sock_input;
                 } else {
 
                         if (rtp_session->rtcp_sock_output && rtp_session->rtcp_sock_output != rtp_session->rtcp_sock_input) {
                                 switch_socket_close(rtp_session->rtcp_sock_output);
                         }
 
                         if ((status = switch_socket_create(&rtp_session->rtcp_sock_output,
                                                                                            switch_sockaddr_get_family(rtp_session->rtcp_remote_addr),
                                                                                            SOCK_DGRAM, 0, rtp_session->pool)) != SWITCH_STATUS_SUCCESS) {
                                 *err = "RTCP Socket Error!";
                         }
                 }
 
         } else {
                 *err = "RTCP NOT ACTIVE!";
         }
 
         return status;
 
 }

◆ free_dtls()

static void free_dtls ( switch_dtls_t ** dtlsp )

static

Definition at line 3344 of file switch_rtp.c.

References switch_dtls_s::ssl, and switch_dtls_s::ssl_ctx.

Referenced by switch_rtp_del_dtls(), and switch_rtp_destroy().

 {
         switch_dtls_t *dtls;
 
         if (!dtlsp) {
                 return;
         }
 
         dtls = *dtlsp;
         *dtlsp = NULL;
 
         if (dtls->ssl) {
                 SSL_free(dtls->ssl);
         }
 
         if (dtls->ssl_ctx) {
                 SSL_CTX_free(dtls->ssl_ctx);
         }
 }

◆ get_next_write_ts()

static uint8_t get_next_write_ts	(	switch_rtp_t *	rtp_session,
		uint32_t	timestamp
	)

static

Definition at line 1543 of file switch_rtp.c.

References switch_rtp::last_write_ts, RTP_BUG_NEVER_SEND_MARKER, RTP_BUG_SEND_LINEAR_TIMESTAMPS, switch_rtp::rtp_bugs, switch_timer::samplecount, switch_rtp::samples_per_interval, switch_core_timer_next(), SWITCH_RTP_FLAG_USE_TIMER, switch_rtp_test_flag(), switch_rtp::ts, and switch_rtp::write_timer.

Referenced by check_rtcp_and_ice(), and rtp_common_write().

 {
         uint8_t m = 0, changed = 0;
 
         if (!(rtp_session->rtp_bugs & RTP_BUG_SEND_LINEAR_TIMESTAMPS)) {
                 if (timestamp) {
                         rtp_session->ts = (uint32_t) timestamp;
                         changed++;
                 } else if (switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {
                         switch_core_timer_next(&rtp_session->write_timer);
                         rtp_session->ts = rtp_session->write_timer.samplecount;
                         changed++;
                 }
         }
 
         if (!changed) {
                 rtp_session->ts = rtp_session->last_write_ts + rtp_session->samples_per_interval;
         } else {
                 /* Send marker bit if timestamp is lower/same as before (resetted/new timer) */
                 if (abs((int32_t)(rtp_session->ts - rtp_session->last_write_ts)) > rtp_session->samples_per_interval 
                         && !(rtp_session->rtp_bugs & RTP_BUG_NEVER_SEND_MARKER)) {
                         m++;
                 }
         }
 
         return m;
 }

◆ get_recv_payload()

static int get_recv_payload ( switch_rtp_t * rtp_session )

static

Definition at line 5824 of file switch_rtp.c.

References payload_map_s::allocated, switch_rtp::flag_mutex, payload_map_s::negotiated, payload_map_s::next, switch_rtp::pmaps, payload_map_s::pt, switch_mutex_lock(), and switch_mutex_unlock().

Referenced by read_rtp_packet().

 {
         int r = -1;
 
         if (rtp_session->pmaps && *rtp_session->pmaps) {
                 payload_map_t *pmap;
 
                 switch_mutex_lock(rtp_session->flag_mutex);
 
                 for (pmap = *rtp_session->pmaps; pmap && pmap->allocated; pmap = pmap->next) {
                         if (pmap->negotiated) {
                                 r = pmap->pt;
                                 break;
                         }
                 }
                 switch_mutex_unlock(rtp_session->flag_mutex);
         }
 
         return r;
 }

◆ handle_ice()

static void handle_ice	(	switch_rtp_t *	rtp_session,
		switch_rtp_ice_t *	ice,
		void *	data,
		switch_size_t	len
	)

static

Definition at line 952 of file switch_rtp.c.

Referenced by process_rtcp_packet(), read_rtcp_packet(), and read_rtp_packet().

 {
         switch_stun_packet_t *packet;
         switch_stun_packet_attribute_t *attr;
         void *end_buf;
         char username[STUN_USERNAME_MAX_SIZE] = { 0 };
         unsigned char buf[1500] = { 0 };
         switch_size_t cpylen = len;
         int xlen = 0;
         int ok = 1;
         uint32_t *pri = NULL;
         int is_rtcp = ice == &rtp_session->rtcp_ice;
         switch_channel_t *channel;
         int i;
         switch_sockaddr_t *from_addr = rtp_session->from_addr;
         const char *from_host = NULL;
         switch_port_t from_port = 0;
         char faddr_buf[80] = "";
 
         if (is_rtcp) {
                 from_addr = rtp_session->rtcp_from_addr;
         }
 
         from_host = switch_get_addr(faddr_buf, sizeof(faddr_buf), from_addr);
         from_port = switch_sockaddr_get_port(from_addr);
 
         //if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
         //      switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "WTF OK %s CALL\n", rtp_type(rtp_session));
         //}
 
         if (!switch_rtp_ready(rtp_session) || zstr(ice->user_ice) || zstr(ice->ice_user)) {
                 return;
         }
 
         READ_INC(rtp_session);
         WRITE_INC(rtp_session);
 
         switch_mutex_lock(rtp_session->ice_mutex);
 
         if (!switch_rtp_ready(rtp_session)) {
                 goto end;
         }
 
         if (cpylen > sizeof(buf)) {
                 cpylen = sizeof(buf);
         }
 
         channel = switch_core_session_get_channel(rtp_session->session);
 
         memcpy(buf, data, cpylen);
         packet = switch_stun_packet_parse(buf, (uint32_t)cpylen);
         if (!packet) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Invalid STUN/ICE packet received %ld bytes\n", (long)cpylen);
                 goto end;
 
         }
 
         rtp_session->last_stun = switch_micro_time_now();
 
         if (!rtp_session->first_stun) {
                 rtp_session->first_stun = rtp_session->last_stun;
         }
 
         calc_elapsed(rtp_session, ice);
 
         end_buf = buf + ((sizeof(buf) > packet->header.length) ? packet->header.length : sizeof(buf));
 
         switch_stun_packet_first_attribute(packet, attr);
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "%s STUN PACKET TYPE: %s\n",
                                           rtp_type(rtp_session), switch_stun_value_to_name(SWITCH_STUN_TYPE_PACKET_TYPE, packet->header.type));
         do {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "|---: %s STUN ATTR %d %x %s\n", rtp_type(rtp_session), attr->type, attr->type,
                                                   switch_stun_value_to_name(SWITCH_STUN_TYPE_ATTRIBUTE, attr->type));
 
                 switch (attr->type) {
                 case SWITCH_STUN_ATTR_USE_CAND:
                         {
                                 ice->rready = 1;
                                 for (i = 0; i < ice->ice_params->cand_idx[ice->proto]; i++) {
                                         if (!strcmp(ice->ice_params->cands[i][ice->proto].con_addr, from_host) && ice->ice_params->cands[i][ice->proto].con_port == from_port) {
                                                 ice->ice_params->cands[i][ice->proto].use_candidate = 1;
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG6, "Got USE-CANDIDATE on %s:%d\n", ice->ice_params->cands[i][ice->proto].con_addr, ice->ice_params->cands[i][ice->proto].con_port);
                                         }
                                 }
                         }
                         break;
                 case SWITCH_STUN_ATTR_ERROR_CODE:
                         {
                                 switch_stun_error_code_t *err = (switch_stun_error_code_t *) attr->value;
                                 uint32_t code = (err->code * 100) + err->number;
 
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "%s got %s stun binding response %u\n",
                                                                   rtp_session_name(rtp_session),
                                                                   rtp_type(rtp_session),
                                                                   code
                                                                   );
 
                                 if ((ice->type & ICE_VANILLA) && code == 487) {
                                         if ((ice->type & ICE_CONTROLLED)) {
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "%s STUN Changing role to CONTROLLING\n", rtp_type(rtp_session));
                                                 ice->type &= ~ICE_CONTROLLED;
                                         } else {
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "%s STUN Changing role to CONTROLLED\n", rtp_type(rtp_session));
                                                 ice->type |= ICE_CONTROLLED;
                                         }
                                         packet->header.type = SWITCH_STUN_BINDING_RESPONSE;
                                 }
 
                         }
                         break;
                 case SWITCH_STUN_ATTR_MAPPED_ADDRESS:
                         {
                                 char ip[50];
                                 uint16_t port;
                                 switch_stun_packet_attribute_get_mapped_address(attr, ip, sizeof(ip), &port);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "|------: %s:%d\n", ip, port);
                         }
                         break;
                 case SWITCH_STUN_ATTR_XOR_MAPPED_ADDRESS:
                         {
                                 char ip[50];
                                 uint16_t port;
                                 switch_stun_packet_attribute_get_xor_mapped_address(attr, &packet->header, ip, sizeof(ip), &port);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "|------: %s:%d\n", ip, port);
                         }
                         break;
                 case SWITCH_STUN_ATTR_USERNAME:
                         {
                                 switch_stun_packet_attribute_get_username(attr, username, sizeof(username));
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "|------: %s\n", username);
                         }
                         break;
 
                 case SWITCH_STUN_ATTR_PRIORITY:
                         {
                                 uint32_t priority = 0;
                                 pri = (uint32_t *) attr->value;
                                 priority = ntohl(*pri);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG8, "|------: %u\n", priority);
                                 ok = priority == ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].priority;
                         }
                         break;
                 }
 
                 if (!switch_stun_packet_next_attribute(attr, end_buf)) {
                         break;
                 }
 
                 xlen += 4 + switch_stun_attribute_padded_length(attr);
         } while (xlen <= packet->header.length);
 
         if ((ice->type & ICE_GOOGLE_JINGLE) && ok) {
                 ok = !strcmp(ice->user_ice, username);
         }
 
         if (packet->header.type != SWITCH_STUN_BINDING_REQUEST && packet->header.type != SWITCH_STUN_BINDING_RESPONSE) {
                 goto end;
         }
 
         if ((ice->type & ICE_VANILLA)) {
                 if (!ok) ok = !memcmp(packet->header.id, ice->last_sent_id, 12);
 
                 if (packet->header.type == SWITCH_STUN_BINDING_RESPONSE) {
                         ok = 1;
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                                 rtp_session->ice.rready = 1;
                                 rtp_session->rtcp_ice.rready = 1;
                         } else {
                                 ice->rready = 1;
                         }
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG6, "Received STUN Binding Response from %s\n", from_host);
 
                         if (ice->ice_params) {
                                 for (i = 0; i < ice->ice_params->cand_idx[ice->proto]; i++) {
                                         if (!strcmp(ice->ice_params->cands[i][ice->proto].con_addr, from_host) && ice->ice_params->cands[i][ice->proto].con_port == from_port) {
                                                 ice->ice_params->cands[i][ice->proto].responsive = 1;
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "Marked ICE candidate %s:%d as responsive\n", ice->ice_params->cands[i][ice->proto].con_addr, ice->ice_params->cands[i][ice->proto].con_port);
                                                 if (!strcmp(ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, from_host) && ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port == from_port) {
                                                         ice->cand_responsive = 1;
                                                         ice->initializing = 0;
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "Chosen ICE candidate %s:%d is responsive\n", ice->ice_params->cands[i][ice->proto].con_addr, ice->ice_params->cands[i][ice->proto].con_port);
                                                 }
                                         }
                                 }
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                                 switch_core_session_video_reinit(rtp_session->session);
                         }
                 }
 
                 if (!ok && ice == &rtp_session->ice && rtp_session->rtcp_ice.ice_params && pri &&
                         *pri == rtp_session->rtcp_ice.ice_params->cands[rtp_session->rtcp_ice.ice_params->chosen[1]][1].priority) {
                         ice = &rtp_session->rtcp_ice;
                         ok = 1;
                 }
 
                 if (!zstr(username)) {
                         if (!icecmp(username, ice)) {
                                 ok = 1;
                         } else if(!zstr(rtp_session->rtcp_ice.user_ice) && !icecmp(username, &rtp_session->rtcp_ice)) {
                                 ice = &rtp_session->rtcp_ice;
                                 ok = 1;
                         }
                 }
 
                 if (ok) {
                         ice->missed_count = 0;
                 } else {
                         switch_rtp_ice_t *icep[2] = { &rtp_session->ice, &rtp_session->rtcp_ice };
                         switch_port_t port = 0;
                         char *host = NULL;
 
                         if (rtp_session->elapsed_stun > STUN_TOO_LONG && pri) {
                                 int i, j;
                                 uint32_t old;
                                 //const char *tx_host;
                                 const char *old_host, *err = NULL;
                                 //char bufa[50];
                                 char bufb[50];
                                 char adj_port[6];
                                 switch_channel_t *channel = NULL;
 
 
                                 ice->missed_count++;
                                 //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "missed %d\n", ice->missed_count);
 
 
                                 if (rtp_session->session) {
                                         channel = switch_core_session_get_channel(rtp_session->session);
                                 }
 
                                 //ice->ice_params->cands[ice->ice_params->chosen][ice->proto].priority;
                                 for (j = 0; j < 2; j++) {
                                         if (!icep[j] || !icep[j]->ice_params) {
                                                 continue;
                                         }
                                         for (i = 0; i < icep[j]->ice_params->cand_idx[icep[j]->proto]; i++) {
                                                 if (icep[j]->ice_params &&  icep[j]->ice_params->cands[i][icep[j]->proto].priority == *pri) {
                                                         if (j == IPR_RTP) {
                                                                 icep[j]->ice_params->chosen[j] = i;
                                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "Change candidate index to %d\n", i);
                                                         }
 
                                                         ice = icep[j];
                                                         ok = 1;
 
                                                         if (j != IPR_RTP) {
                                                                 break;
                                                         }
 
                                                         old = rtp_session->remote_port;
 
                                                         //tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->from_addr);
                                                         old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
 
                                                         host = ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr;
                                                         port = ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port;
 
                                                         if (!host || !port) {
                                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error setting remote host!\n");
                                                                 goto end;
                                                         }
 
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO,
                                                                                           "%s ICE Auto Changing port from %s:%u to %s:%u\n", rtp_type(rtp_session), old_host, old, host, port);
 
 
                                                         if (channel) {
                                                                 switch_channel_set_variable(channel, "remote_media_ip_reported", switch_channel_get_variable(channel, "remote_media_ip"));
                                                                 switch_channel_set_variable(channel, "remote_media_ip", host);
                                                                 switch_channel_set_variable(channel, "rtp_auto_adjust_ip", host);
                                                                 switch_snprintf(adj_port, sizeof(adj_port), "%u", port);
                                                                 switch_channel_set_variable(channel, "remote_media_port_reported", switch_channel_get_variable(channel, "remote_media_port"));
                                                                 switch_channel_set_variable(channel, "remote_media_port", adj_port);
                                                                 switch_channel_set_variable(channel, "rtp_auto_adjust_port", adj_port);
                                                                 switch_channel_set_variable(channel, "rtp_auto_candidate_adjust", "true");
                                                         }
                                                         rtp_session->auto_adj_used = 1;
 
 
                                                         switch_rtp_set_remote_address(rtp_session, host, port, 0, SWITCH_FALSE, &err);
                                                         if (switch_sockaddr_info_get(&ice->addr, host, SWITCH_UNSPEC, port, 0, rtp_session->pool) != SWITCH_STATUS_SUCCESS ||
                                                                 !ice->addr) {
                                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error setting remote host!\n");
                                                                 goto end;
                                                         }
 
                                                         if ((rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST)) {
                                                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                                         } else {
                                                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                                         }
 
                                                 }
                                         }
                                 }
                         }
                 }
         }
 
         if (ice->missed_count > 5 && !(ice->type & ICE_GOOGLE_JINGLE)) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "missed too many: %d, looking for new ICE dest.\n",
                                                   ice->missed_count);
                 ice->rready = 0;
                 ice->cand_responsive = 0;
                 ok = 1;
         }
 
 
         //if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] || 1) {
         //      switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "WTF OK %s %d\n", rtp_type(rtp_session), ok);
         //}
 
         if (ok) {
                 const char *host2 = NULL;
                 switch_port_t port2 = 0;
                 char buf2[80] = "";
 
                 if (packet->header.type == SWITCH_STUN_BINDING_REQUEST) {
                         uint8_t stunbuf[512];
                         switch_stun_packet_t *rpacket;
                         const char *remote_ip;
                         switch_size_t bytes;
                         char ipbuf[50];
                         switch_socket_t *sock_output = rtp_session->sock_output;
                         uint8_t do_adj = 0;
                         switch_time_t now = switch_micro_time_now();
                         int cmp = 0;
                         int cur_idx = -1, is_relay = 0, is_responsive = 0, use_candidate = 0;
 
                         if (is_rtcp) {
                                 sock_output = rtp_session->rtcp_sock_output;
                         }
 
                         if (!ice->ready) {
                                 ice->ready = 1;
                         }
 
                         memset(stunbuf, 0, sizeof(stunbuf));
                         rpacket = switch_stun_packet_build_header(SWITCH_STUN_BINDING_RESPONSE, packet->header.id, stunbuf);
 
                         if ((ice->type & ICE_GOOGLE_JINGLE)) {
                                 switch_stun_packet_attribute_add_username(rpacket, username, (uint16_t)strlen(username));
                         }
 
                         remote_ip = switch_get_addr(ipbuf, sizeof(ipbuf), from_addr);
 
                         switch_stun_packet_attribute_add_xor_binded_address(rpacket, (char *) remote_ip, switch_sockaddr_get_port(from_addr), from_addr->family);
 
                         if ((ice->type & ICE_VANILLA)) {
                                 switch_stun_packet_attribute_add_integrity(rpacket, ice->pass);
                                 switch_stun_packet_attribute_add_fingerprint(rpacket);
                         }
 
                         bytes = switch_stun_packet_length(rpacket);
 
                         host2 = switch_get_addr(buf2, sizeof(buf2), ice->addr);
                         port2 = switch_sockaddr_get_port(ice->addr);
                         cmp = switch_cmp_addr(from_addr, ice->addr, SWITCH_FALSE);
 
                         for (i = 0; i < ice->ice_params->cand_idx[ice->proto]; i++) {
                                 if (!strcmp(ice->ice_params->cands[i][ice->proto].con_addr, from_host) && ice->ice_params->cands[i][ice->proto].con_port == from_port) {
                                         if (!strcasecmp(ice->ice_params->cands[i][ice->proto].cand_type, "relay")) {
                                                 is_relay = 1;
                                         }
 
                                         if (ice->ice_params->cands[i][ice->proto].responsive) {
                                                 is_responsive = 1;
                                         }
 
                                         if (ice->ice_params->cands[i][ice->proto].use_candidate) {
                                                 use_candidate = 1;
                                         }
                                 }
                         }
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5,
                                 "%s %s STUN from %s:%d %s is_relay: %d is_responsive: %d use_candidate: %d ready: %d, rready: %d\n", switch_channel_get_name(channel), rtp_type(rtp_session), from_host, from_port, cmp ? "EXPECTED" : "IGNORED",
                                 is_relay, is_responsive, use_candidate, ice->ready, ice->rready);
 
                         if (ice->initializing && !cmp) {
                                 if (!rtp_session->adj_window && (!ice->ready || !ice->rready || (!rtp_session->dtls || rtp_session->dtls->state != DS_READY))) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE set ADJUST window to 10 seconds on binding request from %s:%d (is_relay: %d, is_responsivie: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                 switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                         rtp_session->adj_window = now + 10000000;
                                 }
 
                                 if (rtp_session->adj_window) {
                                         if (rtp_session->adj_window > now) {
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE check: %d >= 3000 or window closed and not from relay on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", rtp_session->elapsed_stun, from_host, from_port, is_relay, is_responsive, use_candidate,
                                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                                 if (!is_relay && (rtp_session->elapsed_stun >= 3000 || rtp_session->adj_window == (now + 10000000))) {
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST HIT 1 on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                                 switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                                         do_adj++;
                                                         rtp_session->last_adj = now;
                                                 }
                                         } else {
                                                 rtp_session->adj_window = 0;
                                         }
                                 }
 
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE CHECK SAME IP DIFFT PORT %d %d on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp",ice->initializing, switch_cmp_addr(from_addr, ice->addr, SWITCH_TRUE), from_host, from_port, is_relay, is_responsive, use_candidate,
                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                 if (!do_adj && (switch_cmp_addr(from_addr, ice->addr, SWITCH_TRUE) || use_candidate)) {
                                         do_adj++;
                                         rtp_session->last_adj = now;
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST HIT 2 on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                 switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
                                 }
                         }
 
                         if (cmp) {
                                 ice->last_ok = now;
                         } else if (!do_adj) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "ICE %d/%d dt:%d i:%d i2:%d cmp:%d\n", rtp_session->elapsed_stun, rtp_session->elapsed_media, (rtp_session->dtls && rtp_session->dtls->state != DS_READY), !ice->ready, !ice->rready, switch_cmp_addr(from_addr, ice->addr, SWITCH_TRUE));
 
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST ELAPSED vs 1000 %d on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp" ,rtp_session->elapsed_adj, from_host, from_port, is_relay, is_responsive, use_candidate,
                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                 if (rtp_session->elapsed_adj > 1000) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE IF DTLS NOT READY or %d >= 3000 or media too long %d or stun too long %d on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                 switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", rtp_session->elapsed_stun, rtp_session->elapsed_media >= MEDIA_TOO_LONG,
                                                 rtp_session->elapsed_stun >= STUN_TOO_LONG, from_host, from_port, is_relay, is_responsive, use_candidate,
                                                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                         if (!is_relay && ((rtp_session->dtls && rtp_session->dtls->state != DS_READY) ||
                                                 ((!ice->ready || !ice->rready) && (rtp_session->elapsed_stun >= 3000 || switch_cmp_addr(from_addr, ice->addr, SWITCH_TRUE))))) {
 
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST HIT 3 on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                                 do_adj++;
                                                 rtp_session->last_adj = now;
                                         } else if (is_relay && ice->initializing && rtp_session->elapsed_stun >= 1000) {
 
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST HIT 4 (FLIP TO TURN) on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                                 do_adj++;
                                                 rtp_session->last_adj = now;
                                         } else if ((ice->initializing && rtp_session->elapsed_stun >= 3000) ||
                                                 (rtp_session->elapsed_media >= MEDIA_TOO_LONG || rtp_session->elapsed_stun >= STUN_TOO_LONG)) {
 
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "%s %s %s ICE ADJUST HIT 5 on binding request from %s:%d (is_relay: %d, is_responsive: %d, use_candidate: %d) Current cand: %s:%d typ: %s\n",
                                                         switch_channel_get_name(channel), rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp", from_host, from_port, is_relay, is_responsive, use_candidate,
                                                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].cand_type);
 
                                                 do_adj++;
                                                 rtp_session->last_adj = now;
                                         }
 
                                         for (i = 0; i < ice->ice_params->cand_idx[ice->proto]; i++) {
                                                 if (!strcmp(ice->ice_params->cands[i][ice->proto].con_addr, from_host)) {
                                                         cur_idx = i;
                                                 }
                                         }
                                 }
                         }
 
                         if ((ice->type & ICE_VANILLA) && ice->ice_params && do_adj) {
                                 ice->missed_count = 0;
                                 ice->rready = 1;
 
                                 if (cur_idx > -1) {
                                         ice->ice_params->chosen[ice->proto] = cur_idx;
                                 }
                                 
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_NOTICE,
                                                                   "Auto Changing %s stun/%s/dtls port from %s:%u to %s:%u idx:%d\n", rtp_type(rtp_session), is_rtcp ? "rtcp" : "rtp",
                                                                   host2, port2,
                                                                   from_host, from_port, cur_idx);
 
                                 switch_rtp_change_ice_dest(rtp_session, ice, from_host, from_port);
 
                                 ice->cand_responsive = is_responsive;
                                 if (ice->cand_responsive) {
                                         ice->initializing = 0;
                                 }
 
                                 ice->last_ok = now;
                         }
                         //if (cmp) {
                         switch_socket_sendto(sock_output, from_addr, 0, (void *) rpacket, &bytes);
                         //}
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG6, "Send STUN Binding Response to %s:%u\n", from_host, from_port);
 
                         if (ice->initializing && !is_responsive) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "Send STUN Binding Request on ICE candidate still unresponsive to %s:%u\n", from_host, from_port);
                                 if (ice_out(rtp_session, ice, SWITCH_TRUE) != SWITCH_STATUS_SUCCESS) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "Error sending STUN Binding Request on ICE candidate still unresponsive to %s:%u\n", from_host, from_port);
                                 }
                         }
                 }
         } else if (packet->header.type == SWITCH_STUN_BINDING_ERROR_RESPONSE) {
 
                 if (rtp_session->session) {
                         switch_core_session_message_t msg = { 0 };
                         msg.from = __FILE__;
                         msg.numeric_arg = packet->header.type;
                         msg.pointer_arg = packet;
                         msg.message_id = SWITCH_MESSAGE_INDICATE_STUN_ERROR;
                         switch_core_session_receive_message(rtp_session->session, &msg);
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG,
                                                           "STUN/ICE binding error received on %s channel\n", rtp_type(rtp_session));
                 }
 
         }
 
 
 
 
  end:
         switch_mutex_unlock(rtp_session->ice_mutex);
         WRITE_DEC(rtp_session);
         READ_DEC(rtp_session);
 }

◆ handle_nack()

static void handle_nack	(	switch_rtp_t *	rtp_session,
		uint32_t	nack
	)

static

Definition at line 6689 of file switch_rtp.c.

References switch_rtp::flags, switch_rtp_packet_t::header, switch_rtp::local_addr, switch_rtp_hdr_t::m, switch_rtp_hdr_t::pt, switch_rtp::remote_addr, switch_rtp::remote_port, switch_rtp::rtcp_from_addr, switch_rtp_hdr_t::seq, switch_rtp::session, switch_channel_get_name(), SWITCH_CHANNEL_SESSION_LOG, SWITCH_CHANNEL_SESSION_LOG_CLEAN, switch_core_session_get_channel(), switch_core_session_get_name, SWITCH_FALSE, switch_get_addr(), switch_jb_get_packet_by_seq(), SWITCH_LOG_CONSOLE, SWITCH_LOG_DEBUG2, switch_log_printf(), SWITCH_RTP_FLAG_DEBUG_RTP_WRITE, SWITCH_RTP_FLAG_NACK, switch_rtp_write_raw(), switch_sockaddr_get_port(), SWITCH_STATUS_SUCCESS, switch_rtp_hdr_t::ts, and switch_rtp::vbw.

Referenced by process_rtcp_report().

 {
         switch_size_t bytes = 0;
         rtp_msg_t send_msg[1] = {{{0}}};
         uint16_t seq = (uint16_t) (nack & 0xFFFF);
         uint16_t blp = (uint16_t) (nack >> 16);
         int i;
         const char *tx_host = NULL;
         const char *old_host = NULL;
         const char *my_host = NULL;
         char bufa[50], bufb[50], bufc[50];
 
         if (!(rtp_session->flags[SWITCH_RTP_FLAG_NACK] && rtp_session->vbw)) {
                 return;  /* not enabled */
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]) {
                 tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtcp_from_addr);
                 old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
                 my_host = switch_get_addr(bufc, sizeof(bufc), rtp_session->local_addr);
         }
 
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s Got NACK [%u][0x%x] for seq %u\n", 
                                           switch_core_session_get_name(rtp_session->session), nack, nack, ntohs(seq));
 
         if (switch_jb_get_packet_by_seq(rtp_session->vbw, seq, (switch_rtp_packet_t *) send_msg, &bytes) == SWITCH_STATUS_SUCCESS) {
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG_CLEAN(rtp_session->session), SWITCH_LOG_CONSOLE,
                                                           "X %s b=%4ld %s:%u %s:%u %s:%u pt=%d ts=%u seq=%u m=%d\n",
                                                           rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "NoName",
                                                           (long) bytes,
                                                           my_host, switch_sockaddr_get_port(rtp_session->local_addr),
                                                           old_host, rtp_session->remote_port,
                                                           tx_host, switch_sockaddr_get_port(rtp_session->rtcp_from_addr),
                                                           send_msg->header.pt, ntohl(send_msg->header.ts), ntohs(send_msg->header.seq), send_msg->header.m);
 
                 }
                 //switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG2, "RE----SEND %u\n", ntohs(send_msg->header.seq));
                 switch_rtp_write_raw(rtp_session, (void *) send_msg, &bytes, SWITCH_FALSE);
         } else {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Cannot send NACK for seq %u\n", ntohs(seq));
         }
 
         blp = ntohs(blp);
         for (i = 0; i < 16; i++) {
                 if (blp & (1 << i)) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s Also Got NACK for seq %u\n", 
                                                           switch_core_session_get_name(rtp_session->session), ntohs(seq) + i + 1);
                         /* If they are missing more than one, may as well gen a key frame for good measure */
                         //switch_core_media_gen_key_frame(rtp_session->session);
                         if (switch_jb_get_packet_by_seq(rtp_session->vbw, htons(ntohs(seq) + i + 1), (switch_rtp_packet_t *) &send_msg, &bytes) == SWITCH_STATUS_SUCCESS) {
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG_CLEAN(rtp_session->session), SWITCH_LOG_CONSOLE,
                                                                           "X %s b=%4ld %s:%u %s:%u %s:%u pt=%d ts=%u seq=%u m=%d\n",
                                                                           rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "NoName",
                                                                           (long) bytes,
                                                                           my_host, switch_sockaddr_get_port(rtp_session->local_addr),
                                                                           old_host, rtp_session->remote_port,
                                                                           tx_host, switch_sockaddr_get_port(rtp_session->rtcp_from_addr),
                                                                           send_msg->header.pt, ntohl(send_msg->header.ts), ntohs(send_msg->header.seq), send_msg->header.m);
 
                                 }
                                 //switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "RE----SEND %u\n", ntohs(send_msg->header.seq));
 
                                 switch_rtp_write_raw(rtp_session, (void *) &send_msg, &bytes, SWITCH_FALSE);
                         } else {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "Cannot send NACK for seq %u\n", ntohs(seq) + i);
                         }
                 }
         }
 }

◆ handle_rfc2833()

static handle_rfc2833_result_t handle_rfc2833	(	switch_rtp_t *	rtp_session,
		switch_size_t	bytes,
		int *	do_cng
	)

static

Definition at line 582 of file switch_rtp.c.

Referenced by do_flush(), and rtp_common_read().

 {
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON]) {
                 rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON]++;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] > DTMF_SANITY) {
                         rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] = 0;
                 } else {
                         rtp_session->stats.inbound.last_processed_seq = 0;
                 }
         }
 
 
 #ifdef DEBUG_2833
         if (rtp_session->dtmf_data.in_digit_sanity && !(rtp_session->dtmf_data.in_digit_sanity % 100)) {
                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "sanity %d %ld\n", rtp_session->dtmf_data.in_digit_sanity, bytes);
         }
 #endif
 
         if (rtp_session->dtmf_data.in_digit_sanity && !--rtp_session->dtmf_data.in_digit_sanity) {
 
                 rtp_session->dtmf_data.last_digit = 0;
                 rtp_session->dtmf_data.in_digit_ts = 0;
                 rtp_session->dtmf_data.in_digit_queued = 0;
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Failed DTMF sanity check.\n");
         }
 
         if (!bytes) return RESULT_CONTINUE;
 
 
         /* RFC2833 ... like all RFC RE: VoIP, guaranteed to drive you to insanity!
            We know the real rules here, but if we enforce them, it's an interop nightmare so,
            we put up with as much as we can so we don't have to deal with being punished for
            doing it right. Nice guys finish last!
         */
 
         if (bytes > rtp_header_len && !rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] &&
                 rtp_session->last_rtp_hdr.pt == rtp_session->recv_te) {
                 switch_size_t len = bytes - rtp_header_len;
                 unsigned char *packet = (unsigned char *) RTP_BODY(rtp_session);
                 int end;
                 uint16_t duration;
                 char key;
                 uint16_t in_digit_seq;
                 uint32_t ts;
 
                 rtp_session->stats.inbound.last_processed_seq = 0;
 
                 if (!(packet[0] || packet[1] || packet[2] || packet[3]) && len >= 8) {
                         packet += 4;
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "DTMF payload offset by 4 bytes.\n");
                 }
 
                 if (!(packet[0] || packet[1] || packet[2] || packet[3]) && rtp_session->dtmf_data.in_digit_ts) {
                         switch_core_session_t *session = switch_core_memory_pool_get_data(rtp_session->pool, "__session");
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed DTMF payload check.\n");
                         rtp_session->dtmf_data.last_digit = 0;
                         rtp_session->dtmf_data.in_digit_ts = 0;
                         rtp_session->dtmf_data.in_digit_sanity = 0;
                         rtp_session->dtmf_data.in_digit_queued = 0;
                 }
 
                 end = packet[1] & 0x80 ? 1 : 0;
                 duration = (packet[2] << 8) + packet[3];
                 key = switch_rfc2833_to_char(packet[0]);
                 in_digit_seq = ntohs((uint16_t) rtp_session->last_rtp_hdr.seq);
                 ts = htonl(rtp_session->last_rtp_hdr.ts);
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_PASS_RFC2833]) {
 
                         if (end) {
                                 rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] = DTMF_SANITY - 3;
                         } else if (!rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON]) {
                                 rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] = 1;
                         }
 
                         return RESULT_CONTINUE;
                 }
 
                 if (in_digit_seq < rtp_session->dtmf_data.in_digit_seq) {
                         if (rtp_session->dtmf_data.in_digit_seq - in_digit_seq > 100) {
                                 rtp_session->dtmf_data.in_digit_seq = 0;
                         }
                 }
 #ifdef DEBUG_2833
                 if (!(packet[0] || packet[1] || packet[2] || packet[3]) && len >= 8) {
                         len -= 4;
                 }
                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "packet[%d]: %02x %02x %02x %02x\n", (int) len, (unsigned char) packet[0], (unsigned char) packet[1], (unsigned char) packet[2], (unsigned char) packet[3]);
 #endif
 
                 if (in_digit_seq > rtp_session->dtmf_data.in_digit_seq) {
 
                         rtp_session->dtmf_data.in_digit_seq = in_digit_seq;
 #ifdef DEBUG_2833
 
                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "read: %c %u %u %u %u %d %d %s\n",
                                                           key, in_digit_seq, rtp_session->dtmf_data.in_digit_seq,
                                    ts, duration, rtp_session->last_rtp_hdr.m, end, end && !rtp_session->dtmf_data.in_digit_ts ? "ignored" : "");
 #endif
 
 
                         if (rtp_session->dtmf_data.in_digit_ts && rtp_session->dtmf_data.in_digit_ts != ts) {
                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "TS changed from last packet, resetting....\n");
                                 rtp_session->dtmf_data.last_digit = 0;
                                 rtp_session->dtmf_data.in_digit_ts = 0;
                                 rtp_session->dtmf_data.in_digit_sanity = 0;
                                 rtp_session->dtmf_data.in_digit_queued = 0;
                         }
 
 
                         if (!rtp_session->dtmf_data.in_digit_queued && rtp_session->dtmf_data.in_digit_ts) {
                                 if ((rtp_session->rtp_bugs & RTP_BUG_IGNORE_DTMF_DURATION)) {
                                         switch_dtmf_t dtmf = { key, switch_core_min_dtmf_duration(0), 0, SWITCH_DTMF_RTP };
 #ifdef DEBUG_2833
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Early Queuing digit %c:%d\n", dtmf.digit, dtmf.duration / 8);
 #endif
                                         switch_rtp_queue_rfc2833_in(rtp_session, &dtmf);
                                         rtp_session->dtmf_data.in_digit_queued = 1;
                                 }
 
                                 if (rtp_session->jb && (rtp_session->rtp_bugs & RTP_BUG_FLUSH_JB_ON_DTMF)) {
                                         switch_jb_reset(rtp_session->jb);
                                 }
 
                         }
 
                         /* only set sanity if we do NOT ignore the packet */
                         if (rtp_session->dtmf_data.in_digit_ts) {
                                 rtp_session->dtmf_data.in_digit_sanity = 2000;
                         }
 
                         if (rtp_session->dtmf_data.last_duration > duration &&
                                 rtp_session->dtmf_data.last_duration > 0xFC17 && ts == rtp_session->dtmf_data.in_digit_ts) {
                                 rtp_session->dtmf_data.flip++;
                         }
 
                         if (end) {
                                 if (!rtp_session->dtmf_data.in_digit_ts && rtp_session->dtmf_data.last_in_digit_ts != ts) {
 #ifdef DEBUG_2833
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "start with end packet %d\n", ts);
 #endif
                                         rtp_session->dtmf_data.last_in_digit_ts = ts;
                                         rtp_session->dtmf_data.in_digit_ts = ts;
                                         rtp_session->dtmf_data.first_digit = key;
                                         rtp_session->dtmf_data.in_digit_sanity = 2000;
                                 }
                                 if (rtp_session->dtmf_data.in_digit_ts) {
                                         switch_dtmf_t dtmf = { key, duration, 0, SWITCH_DTMF_RTP };
 
                                         if (ts > rtp_session->dtmf_data.in_digit_ts) {
                                                 dtmf.duration += (ts - rtp_session->dtmf_data.in_digit_ts);
                                         }
                                         if (rtp_session->dtmf_data.flip) {
                                                 dtmf.duration += rtp_session->dtmf_data.flip * 0xFFFF;
                                                 rtp_session->dtmf_data.flip = 0;
 #ifdef DEBUG_2833
                                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "you're welcome!\n");
 #endif
                                         }
 #ifdef DEBUG_2833
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "done digit=%c ts=%u start_ts=%u dur=%u ddur=%u\n",
                                                    dtmf.digit, ts, rtp_session->dtmf_data.in_digit_ts, duration, dtmf.duration);
 #endif
 
                                         if (!(rtp_session->rtp_bugs & RTP_BUG_IGNORE_DTMF_DURATION) && !rtp_session->dtmf_data.in_digit_queued) {
 #ifdef DEBUG_2833
                                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Queuing digit %c:%d\n", dtmf.digit, dtmf.duration / 8);
 #endif
                                                 switch_rtp_queue_rfc2833_in(rtp_session, &dtmf);
                                         }
 
                                         rtp_session->dtmf_data.last_digit = rtp_session->dtmf_data.first_digit;
 
                                         rtp_session->dtmf_data.in_digit_ts = 0;
                                         rtp_session->dtmf_data.in_digit_sanity = 0;
                                         rtp_session->dtmf_data.in_digit_queued = 0;
                                         *do_cng = 1;
                                 } else {
                                         if (!switch_rtp_ready(rtp_session)) {
                                                 return RESULT_GOTO_END;
                                         }
                                         switch_cond_next();
                                         return RESULT_GOTO_RECVFROM;
                                 }
 
                         } else if (!rtp_session->dtmf_data.in_digit_ts) {
 #ifdef DEBUG_2833
                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "start %d [%c]\n", ts, key);
 #endif
                                 rtp_session->dtmf_data.in_digit_ts = ts;
                                 rtp_session->dtmf_data.last_in_digit_ts = ts;
                                 rtp_session->dtmf_data.first_digit = key;
                                 rtp_session->dtmf_data.in_digit_sanity = 2000;
                         }
 
                         rtp_session->dtmf_data.last_duration = duration;
                 } else {
 #ifdef DEBUG_2833
                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "drop: %c %u %u %u %u %d %d\n",
                                    key, in_digit_seq, rtp_session->dtmf_data.in_digit_seq, ts, duration, rtp_session->last_rtp_hdr.m, end);
 #endif
                         switch_cond_next();
                         return RESULT_GOTO_RECVFROM;
                 }
         }
 
         if (rtp_session->dtmf_data.in_digit_ts) {
                 if (!switch_rtp_ready(rtp_session)) {
                         return RESULT_GOTO_END;
                 }
 
                 if (!rtp_session->dtmf_data.in_interleaved && rtp_session->last_rtp_hdr.pt != rtp_session->recv_te) {
                         /* Drat, they are sending audio still as well as DTMF ok fine..... *sigh* */
                         rtp_session->dtmf_data.in_interleaved = 1;
                 }
 
                 if (rtp_session->dtmf_data.in_interleaved || (rtp_session->rtp_bugs & RTP_BUG_IGNORE_DTMF_DURATION)) {
                         if (rtp_session->last_rtp_hdr.pt == rtp_session->recv_te) {
                                 return RESULT_GOTO_RECVFROM;
                         }
                 } else {
                         *do_cng = 1;
                         return RESULT_GOTO_TIMERCHECK;
                 }
         }
 
         return RESULT_CONTINUE;
 }

◆ ice_out()

static switch_status_t ice_out	(	switch_rtp_t *	rtp_session,
		switch_rtp_ice_t *	ice,
		switch_bool_t	force
	)

static

Definition at line 853 of file switch_rtp.c.

Referenced by check_rtcp_and_ice(), generate_m(), handle_ice(), and switch_core_media_gen_local_sdp().

 {
         uint8_t buf[256] = { 0 };
         switch_stun_packet_t *packet;
         unsigned int elapsed;
         switch_size_t bytes;
         switch_status_t status = SWITCH_STATUS_SUCCESS;
         //switch_sockaddr_t *remote_addr = rtp_session->remote_addr;
         switch_socket_t *sock_output = rtp_session->sock_output;
         switch_time_t now = switch_micro_time_now();
 
         if (ice->type & ICE_LITE) {
                 // no connectivity checks for ICE-Lite
                 return SWITCH_STATUS_BREAK;
         }
 
         if (!force && ice->next_run && ice->next_run >= now) {
                 return SWITCH_STATUS_BREAK;
         }
 
         ice->next_run = now + RTP_STUN_FREQ;
 
         if (ice == &rtp_session->rtcp_ice && rtp_session->rtcp_sock_output) {
                 sock_output = rtp_session->rtcp_sock_output;
         }
 
         if (!sock_output) {
                 return SWITCH_STATUS_FALSE;
         }
 
         switch_assert(rtp_session != NULL);
         switch_assert(ice->ice_user != NULL);
 
         READ_INC(rtp_session);
 
         if (rtp_session->last_stun) {
                 elapsed = (unsigned int) ((switch_micro_time_now() - rtp_session->last_stun) / 1000);
 
                 if (elapsed > 30000) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "No %s stun for a long time!\n", rtp_type(rtp_session));
                         rtp_session->last_stun = switch_micro_time_now();
                         //status = SWITCH_STATUS_GENERR;
                         //goto end;
                 }
         }
 
         packet = switch_stun_packet_build_header(SWITCH_STUN_BINDING_REQUEST, NULL, buf);
         switch_stun_packet_attribute_add_username(packet, ice->ice_user, (uint16_t)strlen(ice->ice_user));
 
         memcpy(ice->last_sent_id, packet->header.id, 12);
 
         //if (ice->pass && ice->type == ICE_GOOGLE_JINGLE) {
         //      switch_stun_packet_attribute_add_password(packet, ice->pass, (uint16_t)strlen(ice->pass));
         //}
 
         if ((ice->type & ICE_VANILLA)) {
                 char sw[128] = "";
 
                 switch_stun_packet_attribute_add_priority(packet, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].priority);
 
                 switch_snprintf(sw, sizeof(sw), "FreeSWITCH (%s)", switch_version_revision_human());
                 switch_stun_packet_attribute_add_software(packet, sw, (uint16_t)strlen(sw));
 
                 if ((ice->type & ICE_CONTROLLED)) {
                         switch_stun_packet_attribute_add_controlled(packet);
                 } else {
                         switch_stun_packet_attribute_add_controlling(packet);
                         switch_stun_packet_attribute_add_use_candidate(packet);
                 }
 
                 switch_stun_packet_attribute_add_integrity(packet, ice->rpass);
                 switch_stun_packet_attribute_add_fingerprint(packet);
         }
 
 
         bytes = switch_stun_packet_length(packet);
 
 #ifdef DEBUG_EXTRA
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_CRIT, "%s send %s stun\n", rtp_session_name(rtp_session), rtp_type(rtp_session));
 #endif
         switch_socket_sendto(sock_output, ice->addr, 0, (void *) packet, &bytes);
 
         ice->sending = 3;
 
         // end:
         READ_DEC(rtp_session);
 
         return status;
 }

◆ icecmp()

int icecmp	(	const char *	them,
		switch_rtp_ice_t *	ice
	)

Definition at line 943 of file switch_rtp.c.

References switch_rtp_ice_t::luser_ice, and switch_rtp_ice_t::user_ice.

Referenced by handle_ice().

 {
         if (strchr(them, ':')) {
                 return strcmp(them, ice->user_ice);
         }
 
         return strcmp(them, ice->luser_ice);
 }

◆ jb_valid()

static int jb_valid ( switch_rtp_t * rtp_session )

static

Definition at line 5662 of file switch_rtp.c.

References DS_READY, switch_rtp::dtls, switch_rtp::ice, switch_rtp_ice_t::ice_user, switch_rtp_ice_t::ready, switch_rtp_ice_t::rready, and switch_dtls_s::state.

Referenced by do_flush(), read_bundle_rtp_packet(), read_rtp_packet(), and rtp_common_read().

 {
         if (rtp_session->ice.ice_user) {
                 if (!rtp_session->ice.ready && rtp_session->ice.rready) {
                         return 0;
                 }
         }
 
         if (rtp_session->dtls && rtp_session->dtls->state != DS_READY) {
                 return 0;
         }
 
         return 1;
 }

◆ ping_socket()

static void ping_socket ( switch_rtp_t * rtp_session )

static

Definition at line 3044 of file switch_rtp.c.

References switch_rtp::flags, switch_rtp::local_addr, switch_rtp::rtcp_local_addr, switch_rtp::rtcp_sock_input, switch_rtp::sock_input, SWITCH_RTP_FLAG_ENABLE_RTCP, and switch_socket_sendto().

Referenced by switch_rtp_break(), switch_rtp_kill_socket(), and switch_rtp_udptl_mode().

 {
         uint32_t o = UINT_MAX;
         switch_size_t len = sizeof(o);
         switch_socket_sendto(rtp_session->sock_input, rtp_session->local_addr, 0, (void *) &o, &len);
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP] && rtp_session->rtcp_sock_input && rtp_session->rtcp_sock_input != rtp_session->sock_input) {
                 switch_socket_sendto(rtp_session->rtcp_sock_input, rtp_session->rtcp_local_addr, 0, (void *) &o, &len);
         }
 }

◆ process_rtcp_packet()

static switch_status_t process_rtcp_packet	(	switch_rtp_t *	rtp_session,
		switch_size_t *	bytes
	)

static

Definition at line 7099 of file switch_rtp.c.

References handle_ice(), rtcp_msg_t::header, switch_rtp::ice, switch_rtp_ice_t::ice_user, switch_rtcp_hdr_s::length, process_rtcp_report(), switch_rtp::rtcp_ice, switch_rtp::rtcp_recv_msg_p, switch_rtp::session, SWITCH_CHANNEL_SESSION_LOG, switch_log_printf(), SWITCH_LOG_WARNING, SWITCH_SIZE_T_FMT, SWITCH_STATUS_BREAK, SWITCH_STATUS_FALSE, SWITCH_STATUS_SUCCESS, switch_rtcp_hdr_s::type, and switch_rtcp_hdr_s::version.

Referenced by read_rtcp_packet(), and rtp_common_read().

 {
         switch_size_t len;
         switch_size_t remain = *bytes;
         switch_status_t status = SWITCH_STATUS_FALSE;
         rtcp_msg_t *msg = rtp_session->rtcp_recv_msg_p;
 
         if (remain < sizeof(switch_rtcp_ext_hdr_t) || remain > sizeof(rtcp_msg_t)) {
                 return status;
         }
         if (msg->header.version != 2) {
                 if (msg->header.version == 0) {
                         if (rtp_session->ice.ice_user) {
                                 handle_ice(rtp_session, &rtp_session->rtcp_ice, (void *) msg, *bytes);
                         }
                         return SWITCH_STATUS_SUCCESS;
                 } else {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session),
                                                           SWITCH_LOG_WARNING, "Received an unsupported RTCP packet version %d\n", msg->header.version);
                         return SWITCH_STATUS_FALSE;
                 }
         }
 
         do {
                 len = ((switch_size_t)ntohs(msg->header.length) * 4) + 4;
 
                 if (msg->header.version != 2 || !(msg->header.type > 191 && msg->header.type < 210)) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                           "INVALID RTCP PACKET TYPE %d VER %d LEN %" SWITCH_SIZE_T_FMT "\n", msg->header.type,
                                                           msg->header.version, len);
                         status = SWITCH_STATUS_BREAK;
                         break;
                 }
 
                 //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_CRIT,
                 //"WTF BYTES %ld REMAIN %ld PACKET TYPE %d LEN %ld\n", *bytes, remain, msg->header.type, len);
 
                 if (len > remain) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                           "RTCP INVALID LENGTH %" SWITCH_SIZE_T_FMT "\n", len);
                         len = remain;
                 }
 
                 status = process_rtcp_report(rtp_session, msg, len);
 
                 if (remain > len) {
                         unsigned char *p = (unsigned char *) msg;
                         p += len;
                         msg = (rtcp_msg_t *) p;
                 }
 
                 remain -= len;
 
         } while (remain >= 4);
 
         return status;
 }

◆ process_rtcp_report()

static switch_status_t process_rtcp_report	(	switch_rtp_t *	rtp_session,
		rtcp_msg_t *	msg,
		switch_size_t	bytes
	)

static

Definition at line 6762 of file switch_rtp.c.

Referenced by process_rtcp_packet().

 {
         switch_status_t status = SWITCH_STATUS_FALSE;
 
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,
                                           "RTCP packet bytes %" SWITCH_SIZE_T_FMT " type %d pad %d\n",
                                           bytes, msg->header.type, msg->header.p);
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && (msg->header.type == _RTCP_PT_RTPFB || msg->header.type == _RTCP_PT_PSFB || msg->header.type < 200)) {
                 rtcp_ext_msg_t *extp = (rtcp_ext_msg_t *) msg;
 
                 if (extp->header.fmt != 15) { // <---- REMOVE WHEN BRIA STOPS SENDING UNSOLICITED REMB
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s PICKED UP %s XRTCP type: %d fmt: %d\n",
                                                           switch_core_session_get_name(rtp_session->session), rtp_type(rtp_session), msg->header.type, extp->header.fmt);
                 }
 
                 if (msg->header.type == _RTCP_PT_FIR ||
                         (msg->header.type == _RTCP_PT_PSFB && (extp->header.fmt == _RTCP_PSFB_FIR || extp->header.fmt == _RTCP_PSFB_PLI))) {
 #if 0
                         if (msg->header.type == _RTCP_PT_FIR) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "Ancient FIR Received. Hello from 1996!\n");
 
                                 if (!switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_OLD_FIR)) {
                                         switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_OLD_FIR);
                                         switch_core_session_request_video_refresh(rtp_session->session);
                                 }
                         }
 #endif
                         
                         if (switch_core_session_media_flow(rtp_session->session, SWITCH_MEDIA_TYPE_VIDEO) == SWITCH_MEDIA_FLOW_RECVONLY) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s Ignoring FIR/PLI from a sendonly stream.\n", 
                                                                   switch_core_session_get_name(rtp_session->session));
                         } else {
                                 switch_core_media_gen_key_frame(rtp_session->session);
                                 switch_core_session_request_video_refresh(rtp_session->session);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s Got FIR/PLI\n", 
                                                                   switch_core_session_get_name(rtp_session->session));
                                 switch_channel_set_flag(switch_core_session_get_channel(rtp_session->session), CF_VIDEO_REFRESH_REQ);
                         }
                 }
 
                 if (msg->header.type == _RTCP_PT_RTPFB && extp->header.fmt == _RTCP_RTPFB_NACK) {
                         uint32_t *nack = (uint32_t *) extp->body;
                         int i;
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG2, "%s Got NACK count %d\n", 
                                                           switch_core_session_get_name(rtp_session->session), ntohs(extp->header.length) - 2);
 
 
                         for (i = 0; i < ntohs(extp->header.length) - 2; i++) {
                                 handle_nack(rtp_session, nack[i]);
                         }
 
                         //switch_core_media_gen_key_frame(rtp_session->session);
                 }
                 
         } else {
                 struct switch_rtcp_report_block *report;
 
                 if (msg->header.type == _RTCP_PT_SR || msg->header.type == _RTCP_PT_RR) {
                         int i;
 #ifdef DEBUG_RTCP
                         switch_time_t now = switch_micro_time_now();
 #endif 
                         uint32_t lsr_now;
                         uint32_t lsr;
                         uint32_t packet_ssrc;
                         double rtt_now = 0;
                         uint8_t rtt_valid = 0;
                         int rtt_increase = 0, packet_loss_increase=0;
 
                         //if (msg->header.type == _RTCP_PT_SR && rtp_session->ice.ice_user) {
                         //      rtp_session->send_rr = 1;
                         //}
 
                         lsr_now = calc_local_lsr_now();
 
                         if (msg->header.type == _RTCP_PT_SR) { /* Sender report */
                                 struct switch_rtcp_sender_report* sr = (struct switch_rtcp_sender_report*)msg->body;
 
                                 rtp_session->stats.rtcp.packet_count = ntohl(sr->sender_info.pc);
                                 rtp_session->stats.rtcp.octet_count = ntohl(sr->sender_info.oc);
                                 packet_ssrc = sr->ssrc;
                                 /* Extracting LSR from NTP timestamp and save it */
                                 lsr = (ntohl(sr->sender_info.ntp_lsw)&0xffff0000)>>16 | (ntohl(sr->sender_info.ntp_msw)&0x0000ffff)<<16; /* The middle 32 bits out of 64 in the NTP timestamp */
                                 rtp_session->stats.rtcp.last_recv_lsr_peer = htonl(lsr);  /* Save it include it in the next SR */
                                 rtp_session->stats.rtcp.last_recv_lsr_local = lsr_now;    /* Save it to calculate DLSR when generating next SR */
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"Received a SR with %d report blocks, " \
                                                                   "length in words = %d, " \
                                                                   "SSRC = 0x%X, " \
                                                                   "NTP MSW = %u, " \
                                                                   "NTP LSW = %u, " \
                                                                   "RTP timestamp = %u, " \
                                                                   "Sender Packet Count = %u, " \
                                                                   "Sender Octet Count = %u\n",
                                                                   msg->header.count,
                                                                   ntohs((uint16_t)msg->header.length),
                                                                   ntohl(sr->ssrc),
                                                                   ntohl(sr->sender_info.ntp_msw),
                                                                   ntohl(sr->sender_info.ntp_lsw),
                                                                   ntohl(sr->sender_info.ts),
                                                                   ntohl(sr->sender_info.pc),
                                                                   ntohl(sr->sender_info.oc));
 
 
                                 rtp_session->rtcp_frame.ssrc = ntohl(sr->ssrc);
                                 rtp_session->rtcp_frame.packet_type = (uint16_t)rtp_session->rtcp_recv_msg_p->header.type;
                                 rtp_session->rtcp_frame.ntp_msw = ntohl(sr->sender_info.ntp_msw);
                                 rtp_session->rtcp_frame.ntp_lsw = ntohl(sr->sender_info.ntp_lsw);
                                 rtp_session->rtcp_frame.timestamp = ntohl(sr->sender_info.ts);
                                 rtp_session->rtcp_frame.packet_count =  ntohl(sr->sender_info.pc);
                                 rtp_session->rtcp_frame.octect_count = ntohl(sr->sender_info.oc);
 
                                 report = &sr->report_block;
                         } else { /* Receiver report */
                                 struct switch_rtcp_receiver_report* rr = (struct switch_rtcp_receiver_report*)msg->body;
                                 packet_ssrc = rr->ssrc;
                                 //memset(&rtp_session->rtcp_frame, 0, sizeof(rtp_session->rtcp_frame));
                                 report = &rr->report_block;
 
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"Received a RR with %d report blocks, " \
                                                                   "length in words = %d, " \
                                                                   "SSRC = 0x%X, ",
                                                                   msg->header.count,
                                                                   ntohs((uint16_t)msg->header.length),
                                                                   ntohl(rr->ssrc));
 
                         }
                         
 
                         for (i = 0; i < (int)msg->header.count && i < MAX_REPORT_BLOCKS ; i++) {
                                 uint32_t old_avg = rtp_session->rtcp_frame.reports[i].loss_avg;
                                 uint8_t percent_fraction = (uint8_t)((uint16_t/* prevent overflow when '* 100' */)(uint8_t)report->fraction * 100 / 255);
                                 if (!rtp_session->rtcp_frame.reports[i].loss_avg) {
                                         rtp_session->rtcp_frame.reports[i].loss_avg = percent_fraction;
                                 } else {
                                         rtp_session->rtcp_frame.reports[i].loss_avg = (uint32_t)(((float)rtp_session->rtcp_frame.reports[i].loss_avg * .7) +
                                                                                                                                                          ((float)percent_fraction * .3));
                                 }
 
                                 rtp_session->rtcp_frame.reports[i].ssrc = ntohl(report->ssrc);
                                 rtp_session->rtcp_frame.reports[i].fraction = (uint8_t)report->fraction;
 #if SWITCH_BYTE_ORDER == __BIG_ENDIAN
                                 rtp_session->rtcp_frame.reports[i].lost = report->lost; // signed 24bit will extended signess to int32_t automatically
 #else
                                 rtp_session->rtcp_frame.reports[i].lost = ntohl(report->lost)>>8; // signed 24bit casted to uint32_t need >>8 after ntohl()...
                                 rtp_session->rtcp_frame.reports[i].lost = rtp_session->rtcp_frame.reports[i].lost | ((rtp_session->rtcp_frame.reports[i].lost & 0x00800000) ? 0xff000000 : 0x00000000); // ...and signess compensation
 #endif
                                 rtp_session->rtcp_frame.reports[i].highest_sequence_number_received = ntohl(report->highest_sequence_number_received);
                                 rtp_session->rtcp_frame.reports[i].jitter = ntohl(report->jitter);
                                 rtp_session->rtcp_frame.reports[i].lsr = ntohl(report->lsr);
                                 rtp_session->rtcp_frame.reports[i].dlsr = ntohl(report->dlsr);
                                 
                                 if (rtp_session->rtcp_frame.reports[i].lsr && !rtp_session->flags[SWITCH_RTP_FLAG_RTCP_PASSTHRU]) {
 
                                         /* Calculating RTT = A - DLSR - LSR */
                                         rtt_now = ((double)(((int64_t)lsr_now) - rtp_session->rtcp_frame.reports[i].dlsr - rtp_session->rtcp_frame.reports[i].lsr))/65536;
 
                                         /* Only account RTT if it didn't overflow. */
                                         if (lsr_now > rtp_session->rtcp_frame.reports[i].dlsr + rtp_session->rtcp_frame.reports[i].lsr) {
 #ifdef DEBUG_RTCP
                                                 switch_time_exp_t now_hr;
                                                 switch_time_exp_gmt(&now_hr,now);
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,
                                                                 "Receiving an RTCP packet\n[%04d-%02d-%02d %02d:%02d:%02d.%d] SSRC[0x%x]\n"
                                                                 "RTT[%f] = A[%u] - DLSR[%u] - LSR[%u]\n",
                                                                 1900 + now_hr.tm_year, now_hr.tm_mday, now_hr.tm_mon, now_hr.tm_hour, now_hr.tm_min, now_hr.tm_sec, now_hr.tm_usec,
                                                                 rtp_session->rtcp_frame.reports[i].ssrc, rtt_now,
                                                                 lsr_now, rtp_session->rtcp_frame.reports[i].dlsr, rtp_session->rtcp_frame.reports[i].lsr);
 #endif 
                                                 rtt_valid = 1;
                                                 if (!rtp_session->rtcp_frame.reports[i].rtt_avg) {
                                                         rtp_session->rtcp_frame.reports[i].rtt_avg = rtt_now;
                                                 } else {
                                                         rtp_session->rtcp_frame.reports[i].rtt_avg = (double)((rtp_session->rtcp_frame.reports[i].rtt_avg * .7) + (rtt_now * .3 ));
                                                 }
                                         } else {
 #ifdef DEBUG_RTCP
                                                 switch_time_exp_t now_hr;
                                                 switch_time_exp_gmt(&now_hr,now);
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                 "Receiving RTCP packet\n[%04d-%02d-%02d %02d:%02d:%02d.%d] SSRC[0x%x]\n"
                                                                 "Ignoring erroneous RTT[%f] = A[%u] - DLSR[%u] - LSR[%u]\n",
                                                                 1900 + now_hr.tm_year, now_hr.tm_mday, now_hr.tm_mon, now_hr.tm_hour, now_hr.tm_min, now_hr.tm_sec, now_hr.tm_usec,
                                                                 rtp_session->rtcp_frame.reports[i].ssrc, rtt_now,
                                                                 lsr_now, rtp_session->rtcp_frame.reports[i].dlsr, rtp_session->rtcp_frame.reports[i].lsr);
 #endif
                                                 rtt_valid = 0;
                                                 rtt_now = 0;
                                         }
 
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "RTT average %f\n",
                                                         rtp_session->rtcp_frame.reports[i].rtt_avg);
                                 }
 
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_ADJ_BITRATE_CAP] && rtp_session->flags[SWITCH_RTP_FLAG_ESTIMATORS] && !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
 
                                         /* SWITCH_RTP_FLAG_ADJ_BITRATE_CAP : Can the codec change its bitrate on the fly per API command ? */
 #ifdef DEBUG_ESTIMATORS_
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "Current packet loss: [%d %%] Current RTT: [%f ms]\n", percent_fraction, rtt_now);
 #endif
 
                                         if (rtt_valid) {
 
                                                 switch_kalman_estimate(rtp_session->estimators[EST_RTT], rtt_now, EST_RTT);
 
                                                 if (switch_kalman_cusum_detect_change(rtp_session->detectors[EST_RTT], rtt_now, rtp_session->estimators[EST_RTT]->val_estimate_last)) {
                                                         /* sudden change in the mean value of RTT */
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"Sudden change in the mean value of RTT !\n");
 #endif
                                                         rtt_increase = 1;
                                                 }
                                         }
 
                                         switch_kalman_estimate(rtp_session->estimators[EST_LOSS], percent_fraction, EST_LOSS);
 
                                         if (switch_kalman_cusum_detect_change(rtp_session->detectors[EST_LOSS], percent_fraction, rtp_session->estimators[EST_LOSS]->val_estimate_last)){
                                                 /* sudden change in the mean value of packet loss */
 #ifdef DEBUG_ESTIMATORS_
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"Sudden change in the mean value of packet loss!\n");
 #endif
                                                 packet_loss_increase = 1;
                                         }
 #ifdef DEBUG_ESTIMATORS_
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "ESTIMATORS: Packet loss will be: [%f] RTT will be: [%f ms]\n",
                                                                           rtp_session->estimators[EST_LOSS]->val_estimate_last, rtp_session->estimators[EST_RTT]->val_estimate_last);
 #endif
 
                                         if (rtp_session->rtcp_frame.reports[i].loss_avg != old_avg) {
                                                 /*getting bad*/
                                                 if (switch_kalman_is_slow_link(rtp_session->estimators[EST_LOSS],
                                                                                                            rtp_session->estimators[EST_RTT])) {
                                                         /* going to minimum bitrate */
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "Slow link conditions: Loss average: [%d %%], Previous loss: [%d %%]. \
                                                                                                                                         Going to minimum bitrate!",rtp_session->rtcp_frame.reports[i].loss_avg, old_avg);
 #endif
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_ADJUST_BITRATE, SCCT_STRING, "minimum", SCCT_NONE, NULL, NULL, NULL);
                                                         /* if after going to minimum bitrate we still have packet loss then we increase ptime. TODO */
 
                                                 } else if (packet_loss_increase && (rtp_session->estimators[EST_LOSS]->val_estimate_last >= 5)) {
                                                         /* sudden change in the mean value of packet loss percentage */
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_ADJUST_BITRATE,
                                                                                                                         SCCT_STRING, "decrease",
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"Sudden change in the mean value of packet loss percentage !\n");
 #endif
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                         (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                 } else if (rtt_valid && !rtt_increase && rtp_session->estimators[EST_LOSS]->val_estimate_last >= rtp_session->rtcp_frame.reports[i].loss_avg ) {
                                                         /* lossy because of congestion (queues full somewhere -> some packets are dropped , but RTT is good ), packet loss with many small gaps */
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "packet loss, but RTT is not bad\n");
 #endif
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                         (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                 } else if ((rtp_session->estimators[EST_LOSS]->val_estimate_last < 1) && packet_loss_increase) {
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "small packet loss average\n");
 #endif
                                                         /*small loss_avg*/
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_ADJUST_BITRATE,
                                                                                                                         SCCT_STRING, "default",
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                         (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                 } else if ((rtp_session->estimators[EST_LOSS]->val_estimate_last < 5) &&
                                                                    (rtp_session->rtcp_frame.reports[i].rtt_avg < rtp_session->estimators[EST_RTT]->val_estimate_last))  {
 
                                                         /* estimate that packet loss will decrease, we can increase the bitrate */
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_ADJUST_BITRATE,
                                                                                                                         SCCT_STRING, "increase",
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                         (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
 
                                                 } else {
                                                         /* *do nothing about bitrate, just pass the packet loss to the codec */
 #ifdef DEBUG_ESTIMATORS_
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3,"do nothing about bitrate, just pass the packet loss to the codec\n");
 #endif
                                                         switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                         SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                         (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                         SCCT_NONE, NULL, NULL, NULL);
                                                 }
                                         }
                                 } else {
                                         if (!rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->rtcp_frame.reports[i].loss_avg != old_avg) {
                                                 switch_core_media_codec_control(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO,
                                                                                                                 SWITCH_IO_WRITE, SCC_AUDIO_PACKET_LOSS, SCCT_INT,
                                                                                                                 (void *)&rtp_session->rtcp_frame.reports[i].loss_avg,
                                                                                                                 SCCT_NONE, NULL, NULL, NULL);
                                         }
                                 }
 
                                 report++;
                         }
                         rtp_session->rtcp_frame.report_count = (uint16_t)i;
                                 
 
 
 
 
                         rtp_session->rtcp_fresh_frame = 1;
                         rtp_session->stats.rtcp.peer_ssrc = ntohl(packet_ssrc);
                 }
         }
 
         if (msg->header.type > 194 && msg->header.type < 255) {
                 status = SWITCH_STATUS_SUCCESS;
         }
 
         return status;
 }

◆ read_bundle_rtp_packet()

static switch_status_t read_bundle_rtp_packet	(	switch_rtp_t *	rtp_session,
		switch_size_t *	bytes,
		switch_frame_flag_t *	flags
	)

static

Definition at line 5847 of file switch_rtp.c.

References switch_rtp::cng_pt, DS_READY, switch_rtp::dtls, dtls_set_state, switch_rtp::flags, switch_rtp::has_rtp, rtp_msg_t::header, switch_rtp::ice_mutex, switch_rtp::jb, jb_valid(), switch_rtp::last_rtp_hdr, switch_rtp::local_addr, MAX_SRTP_ERRS, switch_rtp::pause_jb, switch_rtp::recv_ctx, switch_rtp::recv_msg, switch_rtp::recv_policy, switch_rtp::recv_te, switch_rtp::remote_addr, switch_rtp::remote_port, switch_rtp::rtp_from_addr, rtp_type, switch_rtp::session, SFF_PLC, switch_rtp::srtp_errs, switch_rtp::srtp_idx_rtp, SWITCH_CAUSE_SRTP_READ_ERROR, switch_channel_get_name(), switch_channel_hangup, SWITCH_CHANNEL_SESSION_LOG, SWITCH_CHANNEL_SESSION_LOG_CLEAN, switch_core_media_get_rtp_session(), switch_core_session_get_channel(), switch_get_addr(), switch_jb_put_packet(), SWITCH_LOG_CONSOLE, SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), SWITCH_LOG_WARNING, SWITCH_MEDIA_TYPE_AUDIO, switch_mutex_lock(), switch_mutex_unlock(), switch_rtp_clear_flag(), SWITCH_RTP_FLAG_DEBUG_RTP_READ, SWITCH_RTP_FLAG_PROXY_MEDIA, SWITCH_RTP_FLAG_SECURE_RECV, SWITCH_RTP_FLAG_SECURE_RECV_MKI, SWITCH_RTP_FLAG_SECURE_RECV_RESET, SWITCH_RTP_FLAG_SRTP_HANGUP_ON_ERROR, SWITCH_RTP_FLAG_UDPTL, switch_sockaddr_get_port(), SWITCH_STATUS_FALSE, SWITCH_STATUS_GENERR, and WARN_SRTP_ERRS.

Referenced by read_rtp_packet().

 {
         switch_status_t status = SWITCH_STATUS_FALSE;
         switch_rtp_t *rtp_bundle_session = switch_core_media_get_rtp_session(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO);
 
         if (!rtp_session) {
                 return SWITCH_STATUS_GENERR;
         }
 
         if (*bytes && rtp_bundle_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]) {
                 const char *tx_host;
                 const char *old_host;
                 const char *my_host;
 
                 char bufa[50], bufb[50], bufc[50];
 
 
                 tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtp_from_addr);
                 old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
                 my_host = switch_get_addr(bufc, sizeof(bufc), rtp_session->local_addr);
 
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG_CLEAN(rtp_session->session), SWITCH_LOG_CONSOLE,
                                                   "R %s b=%4ld %s:%u %s:%u %s:%u pt=%d ts=%u seq=%u m=%d\n",
                                                   rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "No-Name",
                                                   (long) *bytes,
                                                   my_host, switch_sockaddr_get_port(rtp_session->local_addr),
                                                   old_host, rtp_session->remote_port,
                                                   tx_host, switch_sockaddr_get_port(rtp_session->rtp_from_addr),
                                                   rtp_session->last_rtp_hdr.pt, ntohl(rtp_session->last_rtp_hdr.ts), ntohs(rtp_session->last_rtp_hdr.seq),
                                                   rtp_session->last_rtp_hdr.m);
         }
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] && !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
 #ifdef ENABLE_SRTP
                 switch_mutex_lock(rtp_session->ice_mutex);
                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && rtp_session->has_rtp) {
                         //if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && (!rtp_session->ice.ice_user || rtp_session->has_rtp)) {
                         int sbytes = (int) *bytes;
                         srtp_err_status_t stat = 0;
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_RESET] || !rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_SECURE_RECV_RESET);
                                 srtp_dealloc(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]);
                                 rtp_session->recv_ctx[rtp_session->srtp_idx_rtp] = NULL;
                                 if ((stat = srtp_create(&rtp_session->recv_ctx[rtp_session->srtp_idx_rtp],
                                                                                 &rtp_session->recv_policy[rtp_session->srtp_idx_rtp])) || !rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
 
                                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] = 0;
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error! RE-Activating Secure RTP RECV\n");
                                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] = 0;
                                         switch_mutex_unlock(rtp_session->ice_mutex);
                                         return SWITCH_STATUS_FALSE;
                                 } else {
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "RE-Activating Secure RTP RECV\n");
                                         rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                                 }
                         }
 
                         if (!(*flags & SFF_PLC) && rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
                                 if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI]) {
                                         stat = srtp_unprotect(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp], &rtp_session->recv_msg.header, &sbytes);
                                 } else {
                                         stat = srtp_unprotect_mki(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp], &rtp_session->recv_msg.header, &sbytes, 1);
                                 }
 
                                 // if (rtp_session->flags[SWITCH_RTP_FLAG_NACK] && stat == srtp_err_status_replay_fail) {
                                 //      /* false alarm nack */
                                 //      switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "REPLAY ERR, FALSE NACK\n");
                                 //      sbytes = 0;
                                 //      *bytes = 0;
                                 //      if (rtp_session->stats.rtcp.pkt_count) {
                                 //              rtp_session->stats.rtcp.period_pkt_count--;
                                 //              rtp_session->stats.rtcp.pkt_count--;
                                 //      }
                                 //      switch_mutex_unlock(rtp_session->ice_mutex);
                                 //      goto more;
                                 // }
                         }
 
                         if (stat && rtp_session->recv_msg.header.pt != rtp_session->recv_te && rtp_session->recv_msg.header.pt != rtp_session->cng_pt) {
                                 int errs = ++rtp_session->srtp_errs[rtp_session->srtp_idx_rtp];
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_SRTP_HANGUP_ON_ERROR] && stat != srtp_err_status_replay_old) {
                                         char *msg;
                                         switch_srtp_err_to_txt(stat, &msg);
                                         if (errs >= MAX_SRTP_ERRS) {
                                                 switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                         "SRTP %s unprotect failed with code %d (%s) %ld bytes %d errors\n",
                                                                                         rtp_type(rtp_session), stat, msg, (long)*bytes, errs);
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                         "Ending call due to SRTP error\n");
                                                 switch_channel_hangup(channel, SWITCH_CAUSE_SRTP_READ_ERROR);
                                         } else if (errs >= WARN_SRTP_ERRS && !(errs % WARN_SRTP_ERRS)) {
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                         "SRTP %s unprotect failed with code %d (%s) %ld bytes %d errors\n",
                                                                                         rtp_type(rtp_session), stat, msg, (long)*bytes, errs);
                                         }
                                 }
                                 sbytes = 0;
                         } else {
                                 rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                         }
 
                         *bytes = sbytes;
                 }
                 switch_mutex_unlock(rtp_session->ice_mutex);
 #endif
         }
 
         if (!jb_valid(rtp_bundle_session)) {
                 dtls_set_state(rtp_bundle_session->dtls, DS_READY);
         }
 
         if (rtp_bundle_session->jb && !rtp_bundle_session->pause_jb && jb_valid(rtp_bundle_session)) {
                 status = switch_jb_put_packet(rtp_bundle_session->jb, (switch_rtp_packet_t *) &rtp_session->recv_msg, *bytes);
         }
 
         *bytes = 0;
 
         return status;
 }

◆ read_rtcp_packet()

static switch_status_t read_rtcp_packet	(	switch_rtp_t *	rtp_session,
		switch_size_t *	bytes,
		switch_frame_flag_t *	flags
	)

static

Definition at line 7157 of file switch_rtp.c.

References b, switch_dtls_s::bytes, switch_dtls_s::data, do_dtls(), switch_rtp::eff_remote_host_str, enable_remote_rtcp_socket(), switch_rtp::flags, handle_ice(), rtcp_msg_t::header, switch_rtp::ice_mutex, switch_rtp_ice_t::ice_user, if(), switch_rtp::pool, process_rtcp_packet(), switch_rtp::recv_ctx, switch_rtp::remote_rtcp_port, switch_rtp::rtcp_auto_adj_used, switch_rtp::rtcp_autoadj_tally, switch_rtp::rtcp_autoadj_threshold, switch_rtp::rtcp_dtls, switch_rtp::rtcp_from_addr, switch_rtp::rtcp_ice, switch_rtp::rtcp_recv_msg_p, switch_rtp::rtcp_remote_addr, switch_rtp::rtcp_sock_input, RTP_BUG_ALWAYS_AUTO_ADJUST, switch_rtp::rtp_bugs, rtp_type, switch_rtp::session, switch_rtp::srtp_idx_rtcp, switch_assert, SWITCH_CHANNEL_SESSION_LOG, switch_cmp_addr(), switch_core_strdup, SWITCH_FALSE, switch_get_addr(), SWITCH_LOG_DEBUG, SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), switch_mutex_lock(), switch_mutex_unlock(), switch_rtp_clear_flag(), SWITCH_RTP_FLAG_ENABLE_RTCP, SWITCH_RTP_FLAG_RTCP_AUTOADJ, SWITCH_RTP_FLAG_SECURE_RECV, SWITCH_RTP_FLAG_SECURE_RECV_MKI, switch_rtp_set_flag(), switch_sockaddr_get_port(), switch_socket_recvfrom(), SWITCH_STATUS_FALSE, SWITCH_STATUS_SUCCESS, and switch_rtcp_hdr_s::version.

Referenced by rtp_common_read().

 {
         switch_status_t status = SWITCH_STATUS_FALSE;
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                 return SWITCH_STATUS_FALSE;
         }
 
         switch_assert(bytes);
 
         *bytes = sizeof(rtcp_msg_t);
 
         if ((status = switch_socket_recvfrom(rtp_session->rtcp_from_addr, rtp_session->rtcp_sock_input, 0, (void *) rtp_session->rtcp_recv_msg_p, bytes))
                 != SWITCH_STATUS_SUCCESS) {
                 *bytes = 0;
         }
 
         switch_mutex_lock(rtp_session->ice_mutex);
         if (rtp_session->rtcp_dtls) {
                 char *b = (char *) rtp_session->rtcp_recv_msg_p;
 
                 if (*b == 0 || *b == 1) {
                         if (rtp_session->rtcp_ice.ice_user) {
                                 handle_ice(rtp_session, &rtp_session->rtcp_ice, (void *) rtp_session->rtcp_recv_msg_p, *bytes);
                         }
                         *bytes = 0;
                 }
 
                 if (*bytes && (*b >= 20) && (*b <= 64)) {
                         rtp_session->rtcp_dtls->bytes = *bytes;
                         rtp_session->rtcp_dtls->data = (void *) rtp_session->rtcp_recv_msg_p;
                 } else {
                         rtp_session->rtcp_dtls->bytes = 0;
                         rtp_session->rtcp_dtls->data = NULL;
                 }
 
                 do_dtls(rtp_session, rtp_session->rtcp_dtls);
 
 
                 if (rtp_session->rtcp_dtls->bytes) {
                         *bytes = 0;
                 }
         }
 
 #ifdef ENABLE_SRTP
         if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && rtp_session->rtcp_recv_msg_p->header.version == 2) {
                 //if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && (!rtp_session->ice.ice_user || rtp_session->rtcp_recv_msg_p->header.version == 2)) {
                 int sbytes = (int) *bytes;
                 srtp_err_status_t stat = 0;
 
 
                 if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI]) {
                         stat = srtp_unprotect_rtcp(rtp_session->recv_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_recv_msg_p->header, &sbytes);
                 } else {
                         stat = srtp_unprotect_rtcp_mki(rtp_session->recv_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_recv_msg_p->header, &sbytes, 1);
                 }
 
                 if (stat) {
                         //++rtp_session->srtp_errs[rtp_session->srtp_idx_rtp]++;
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "RTCP UNPROTECT ERR\n");
                 } else {
                         //rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                 }
 
                 *bytes = sbytes;
 
         }
 #endif
 
         switch_mutex_unlock(rtp_session->ice_mutex);
 
 
         /* RTCP Auto ADJ */
         if (*bytes && rtp_session->flags[SWITCH_RTP_FLAG_RTCP_AUTOADJ] &&  switch_sockaddr_get_port(rtp_session->rtcp_from_addr)) {
                 if (!switch_cmp_addr(rtp_session->rtcp_from_addr, rtp_session->rtcp_remote_addr, SWITCH_FALSE)) {
                                 if (++rtp_session->rtcp_autoadj_tally >= rtp_session->rtcp_autoadj_threshold) {
                                         const char *err;
                                         uint32_t old = rtp_session->remote_rtcp_port;
                                         const char *tx_host;
                                         const char *old_host;
                                         char bufa[50], bufb[50];
 
                                         tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtcp_from_addr);
                                         old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->rtcp_remote_addr);
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO,
                                                                           "Auto Changing %s RTCP port from %s:%u to %s:%u\n", rtp_type(rtp_session), old_host, old, tx_host,
                                                                           switch_sockaddr_get_port(rtp_session->rtcp_from_addr));
 
 
                                         rtp_session->eff_remote_host_str = switch_core_strdup(rtp_session->pool, tx_host);
                                         rtp_session->remote_rtcp_port = switch_sockaddr_get_port(rtp_session->rtcp_from_addr);
                                         status = enable_remote_rtcp_socket(rtp_session, &err);
                                         rtp_session->rtcp_auto_adj_used = 1;
 
                                         if ((rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST)) {
                                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                         } else {
                                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                         }
                                 }
                         } else {
 
                                 if ((rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST)) {
                                         switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                 } else {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session),
                                                                           SWITCH_LOG_DEBUG, "Correct %s RTCP ip/port confirmed.\n", rtp_type(rtp_session));
                                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                 }
                                 rtp_session->rtcp_auto_adj_used = 0;
 
                         }
         }
 
         if (*bytes) {
                 return process_rtcp_packet(rtp_session, bytes);
         }
 
         return status;
 }

◆ read_rtp_packet()

static switch_status_t read_rtp_packet	(	switch_rtp_t *	rtp_session,
		switch_size_t *	bytes,
		switch_frame_flag_t *	flags,
		payload_map_t **	pmapP,
		switch_status_t	poll_status,
		switch_bool_t	return_jb_packet
	)

static

Definition at line 5970 of file switch_rtp.c.

References payload_map_s::allocated, b, switch_dtls_s::bytes, CF_AUDIO_VIDEO_BUNDLE, check_jitter(), check_recv_payload(), check_rtcp_and_ice(), switch_rtp::clean, switch_rtp_numbers_t::cng_packet_count, switch_rtp::cng_pt, switch_dtls_s::data, do_dtls(), switch_rtp::dtls, switch_rtp_numbers_t::dtmf_packet_count, rtp_msg_t::ebody, rtp_msg_t::ext, switch_rtp::flag_mutex, switch_rtp::flags, switch_rtp_numbers_t::flush_packet_count, switch_rtp::from_addr, get_recv_payload(), handle_ice(), switch_rtp::has_ice, switch_rtp::has_rtcp, switch_rtp::has_rtp, rtp_msg_t::header, rtcp_msg_t::header, switch_rtp::hot_hits, switch_rtp::ice, switch_rtp::ice_mutex, switch_rtp_ice_t::ice_user, switch_rtp_stats_t::inbound, switch_timer::interval, switch_rtp::jb, switch_rtp_numbers_t::jb_packet_count, jb_valid(), switch_rtp::last_cng_ts, switch_rtp::last_flush_packet_count, switch_rtp::last_jb_read_ssrc, switch_rtp::last_media, switch_rtp::last_read_time, switch_rtp::last_read_ts, switch_rtp::last_rtp_hdr, switch_rtp::last_seq, length, switch_rtp_hdr_ext_t::length, switch_rtp::local_addr, MAX_SRTP_ERRS, switch_rtp_numbers_t::media_bytes, switch_rtp_numbers_t::media_packet_count, switch_rtp::media_timeout, memset(), switch_rtp::missed_count, payload_map_s::negotiated, payload_map_s::next, switch_rtp_numbers_t::packet_count, switch_rtp::pause_jb, switch_rtcp_numbers_t::period_pkt_count, switch_rtcp_numbers_t::pkt_count, switch_rtp::pmaps, switch_rtp::prev_read_ts, payload_map_s::pt, switch_rtp::punts, switch_rtp_numbers_t::raw_bytes, read_bundle_rtp_packet(), switch_rtp::read_pollfd, switch_rtp::recv_ctx, switch_rtp::recv_msg, switch_rtp::recv_policy, switch_rtp::recv_te, switch_rtp::remote_addr, switch_rtp::remote_port, switch_rtp::remote_ssrc, switch_rtp_stats_t::rtcp, switch_rtp::rtcp_dtls, switch_rtp::rtcp_recv_msg_p, rtcp_stats(), RTP_BODY, RTP_BUG_ACCEPT_ANY_PACKETS, RTP_BUG_ACCEPT_ANY_PAYLOAD, RTP_BUG_IGNORE_MARK_BIT, switch_rtp::rtp_bugs, switch_rtp::rtp_from_addr, rtp_header_len, rtp_type, rtp_write_ready(), switch_rtp::samples_per_interval, switch_rtp::session, SFF_PLC, SFF_PROXY_PACKET, SFF_RTCP, switch_rtp::skip_timer, switch_rtp::sock_input, switch_rtp::srtp_errs, switch_rtp::srtp_idx_rtcp, switch_rtp::srtp_idx_rtp, switch_rtp::stats, switch_assert, SWITCH_CAUSE_SRTP_READ_ERROR, switch_channel_get_name(), switch_channel_hangup, SWITCH_CHANNEL_LOG, SWITCH_CHANNEL_SESSION_LOG, SWITCH_CHANNEL_SESSION_LOG_CLEAN, switch_channel_test_flag(), switch_core_session_get_channel(), switch_core_session_get_rtp_pt(), switch_core_session_request_video_refresh, switch_core_timer_sync(), switch_cp_addr(), switch_get_addr(), switch_ivr_parse_all_messages(), switch_jb_destroy(), switch_jb_get_last_read_len(), switch_jb_get_packet(), switch_jb_put_packet(), switch_jb_reset(), SWITCH_LOG_ALERT, SWITCH_LOG_CONSOLE, SWITCH_LOG_DEBUG1, SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), SWITCH_LOG_WARNING, SWITCH_MEDIA_TYPE_AUDIO, switch_micro_time_now(), switch_mutex_lock(), switch_mutex_unlock(), switch_poll(), switch_rtp_clear_flag(), SWITCH_RTP_FLAG_BYTESWAP, SWITCH_RTP_FLAG_DEBUG_RTP_READ, SWITCH_RTP_FLAG_DETECT_SSRC, SWITCH_RTP_FLAG_ENABLE_RTCP, SWITCH_RTP_FLAG_FLUSH, SWITCH_RTP_FLAG_KILL_JB, SWITCH_RTP_FLAG_NACK, SWITCH_RTP_FLAG_PROXY_MEDIA, SWITCH_RTP_FLAG_RTCP_MUX, SWITCH_RTP_FLAG_SECURE_RECV, SWITCH_RTP_FLAG_SECURE_RECV_MKI, SWITCH_RTP_FLAG_SECURE_RECV_RESET, SWITCH_RTP_FLAG_SRTP_HANGUP_ON_ERROR, SWITCH_RTP_FLAG_TEXT, SWITCH_RTP_FLAG_UDPTL, SWITCH_RTP_FLAG_USE_TIMER, SWITCH_RTP_FLAG_VIDEO, SWITCH_RTP_MAX_BUF_LEN_WORDS, switch_rtp_set_flag(), switch_rtp_video_refresh(), switch_sockaddr_get_port(), switch_socket_recvfrom(), SWITCH_STATUS_BREAK, SWITCH_STATUS_FALSE, SWITCH_STATUS_GENERR, SWITCH_STATUS_MORE_DATA, SWITCH_STATUS_NOTFOUND, SWITCH_STATUS_RESTART, SWITCH_STATUS_SUCCESS, SWITCH_STATUS_TIMEOUT, SWITCH_STATUS_TOO_LATE, switch_swap_linear(), switch_rtp::timer, to, switch_rtcp_hdr_s::type, switch_rtp::vb, switch_rtp::vbw, switch_rtcp_hdr_s::version, and WARN_SRTP_ERRS.

Referenced by rtp_common_read().

 {
         switch_status_t status = SWITCH_STATUS_FALSE;
         uint32_t ts = 0;
         unsigned char *b = NULL;
         int sync = 0;
         switch_time_t now;
         switch_size_t xcheck_jitter = 0;
         int tries = 0;
         int block = 0;
         uint8_t audio_pt = 0;
         switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
 
         switch_assert(bytes);
  more:
 
         tries++;
 
         if (tries > 20) {
                 if (rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                         switch_jb_reset(rtp_session->jb);
                 }
                 rtp_session->punts++;
                 rtp_session->clean = 0;
                 *bytes = 0;
                 return SWITCH_STATUS_BREAK;
         }
 
         if (block) {
                 int to = 20000;
                 int fdr = 0;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         to = 100000;
                 } else {
                         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] && rtp_session->timer.interval) {
                                 to = rtp_session->timer.interval * 1000;
                         }
                 }
 
                 poll_status = switch_poll(rtp_session->read_pollfd, 1, &fdr, to);
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] && rtp_session->timer.interval) {
                         switch_core_timer_sync(&rtp_session->timer);
                 }
 
                 if (rtp_session->session) {
                         switch_ivr_parse_all_messages(rtp_session->session);
                 }
 
                 block = 0;
         }
 
         *bytes = sizeof(rtp_msg_t);
         sync = 0;
 
         rtp_session->has_rtp = 0;
         rtp_session->has_ice = 0;
         rtp_session->has_rtcp = 0;
         if (rtp_session->dtls) {
                 rtp_session->dtls->bytes = 0;
                 rtp_session->dtls->data = NULL;
         }
         memset(&rtp_session->last_rtp_hdr, 0, sizeof(rtp_session->last_rtp_hdr));
 
         if (poll_status == SWITCH_STATUS_SUCCESS) {
                 status = switch_socket_recvfrom(rtp_session->from_addr, rtp_session->sock_input, 0, (void *) &rtp_session->recv_msg, bytes);
         } else {
                 *bytes = 0;
         }
 
         if (*bytes) {
                 b = (unsigned char *) &rtp_session->recv_msg;
 
                 /* version 2 probably rtp */
                 rtp_session->has_rtp = (rtp_session->recv_msg.header.version == 2);
 
                 if (rtp_session->media_timeout || rtp_session->ice.ice_user) {
                         rtp_session->last_media = switch_micro_time_now();
                 }
 
                 if ((*b >= 20) && (*b <= 64)) {
                         if (rtp_session->dtls) {
                                 rtp_session->dtls->bytes = *bytes;
                                 rtp_session->dtls->data = (void *) &rtp_session->recv_msg;
                         }
                         rtp_session->has_ice = 0;
                         rtp_session->has_rtp = 0;
                         rtp_session->has_rtcp = 0;
                 } else if (*b == 0 || *b == 1) {
                         rtp_session->has_ice = 1;
                         rtp_session->has_rtp = 0;
                         rtp_session->has_rtcp = 0;
                 } else {
                         if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                                 switch(rtp_session->recv_msg.header.pt) {
                                 case 64:        //  192 Full INTRA-frame request.
                                 case 72:        //  200 Sender report.
                                 case 73:        //  201 Receiver report.
                                 case 74:        //  202 Source description.
                                 case 75:        //  203 Goodbye.
                                 case 76:        //  204 Application-defined.
                                 case 77:        //  205 Transport layer FB message.
                                 case 78:        //  206 Payload-specific FB message.
                                 case 79:        //  207 Extended report.
                                         rtp_session->has_rtcp = 1;
                                         rtp_session->has_rtp = 0;
                                         rtp_session->has_ice = 0;
                                         break;
                                 default:
                                         if (rtp_session->rtcp_recv_msg_p->header.version == 2 &&
                                                 rtp_session->rtcp_recv_msg_p->header.type > 199 && rtp_session->rtcp_recv_msg_p->header.type < 208) {
                                                 rtp_session->has_rtcp = 1;
                                                 rtp_session->has_rtp = 0;
                                                 rtp_session->has_ice = 0;
                                         }
                                         break;
                                 }
                         }
                 }
 
                 if (rtp_session->has_rtp || rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
                         rtp_session->missed_count = 0;
                         switch_cp_addr(rtp_session->rtp_from_addr, rtp_session->from_addr);
                 }
 
                 if (rtp_session->has_rtp) {
                         rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
 
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] && !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] &&
                                 rtp_session->last_rtp_hdr.pt != 13 &&
                                 rtp_session->last_rtp_hdr.pt != rtp_session->recv_te &&
                                 rtp_session->last_rtp_hdr.pt != rtp_session->cng_pt) {
                                 int accept_packet = 1;
 
 
                                 if (!(rtp_session->rtp_bugs & RTP_BUG_ACCEPT_ANY_PAYLOAD) && 
                                         !(rtp_session->rtp_bugs & RTP_BUG_ACCEPT_ANY_PACKETS) && rtp_session->pmaps && *rtp_session->pmaps) {
                                         payload_map_t *pmap;
                                         accept_packet = 0;
 
                                         switch_mutex_lock(rtp_session->flag_mutex);
                                         for (pmap = *rtp_session->pmaps; pmap && pmap->allocated; pmap = pmap->next) {
 
                                                 if (!pmap->negotiated) {
                                                         continue;
                                                 }
 
                                                 if (rtp_session->last_rtp_hdr.pt == pmap->pt) {
                                                         accept_packet = 1;
                                                         if (pmapP) {
                                                                 *pmapP = pmap;
                                                         }
                                                         break;
                                                 }
                                         }
                                         switch_mutex_unlock(rtp_session->flag_mutex);
                                 }
 
                                 if (switch_channel_test_flag(channel, CF_AUDIO_VIDEO_BUNDLE) && rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                                         audio_pt = switch_core_session_get_rtp_pt(rtp_session->session, SWITCH_MEDIA_TYPE_AUDIO);
                                         if (rtp_session->last_rtp_hdr.pt == audio_pt) {
                                                 accept_packet = 1;
 
                                                 return read_bundle_rtp_packet(rtp_session, bytes, flags);
                                         }
                                 }
 
                                 if (!accept_packet) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1,
                                                                           "Invalid Packet SEQ: %d TS: %d PT:%d ignored\n",
                                                                           ntohs(rtp_session->recv_msg.header.seq), ntohl(rtp_session->last_rtp_hdr.ts), rtp_session->last_rtp_hdr.pt);
                                         *bytes = 0;
                                 }
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_DETECT_SSRC]) {
                                 //if (rtp_session->remote_ssrc != rtp_session->stats.rtcp.peer_ssrc && rtp_session->stats.rtcp.peer_ssrc) {
                                 //      rtp_session->remote_ssrc = rtp_session->stats.rtcp.peer_ssrc;
                                 //}
 
                                 if (rtp_session->remote_ssrc != rtp_session->last_rtp_hdr.ssrc && rtp_session->last_rtp_hdr.ssrc) {
                                         rtp_session->remote_ssrc = ntohl(rtp_session->last_rtp_hdr.ssrc);
                                 }
                         }
                 }
         }
 
         if (!rtp_session->vb && (!rtp_session->jb || rtp_session->pause_jb || !jb_valid(rtp_session))) {
                 if (*bytes > rtp_header_len && (rtp_session->has_rtp && check_recv_payload(rtp_session))) {
                         xcheck_jitter = *bytes;
                         check_jitter(rtp_session);
                 }
         }
 
         if (check_rtcp_and_ice(rtp_session) == -1) {
                 //if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                 //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "WTF CHECK FAIL\n");
                 //}
                 return SWITCH_STATUS_GENERR;
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
                 goto udptl;
         }
 
 
         if (*bytes) {
                 *flags &= ~SFF_PROXY_PACKET;
 
                 //if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                 //      switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "WTF BYTES %ld b=%d\n", *bytes, *b);
                 //}
 
 
                 if (rtp_session->has_ice) {
                         if (rtp_session->ice.ice_user) {
                                 handle_ice(rtp_session, &rtp_session->ice, (void *) &rtp_session->recv_msg, *bytes);
                         }
                         *bytes = 0;
                         sync = 1;
                 }
         }
 
         switch_mutex_lock(rtp_session->ice_mutex);
 
         if (rtp_session->dtls) {
 
                 if (rtp_session->rtcp_dtls && rtp_session->rtcp_dtls != rtp_session->dtls) {
                         rtp_session->rtcp_dtls->bytes = 0;
                         rtp_session->rtcp_dtls->data = NULL;
                         do_dtls(rtp_session, rtp_session->rtcp_dtls);
                 }
 
                 do_dtls(rtp_session, rtp_session->dtls);
 
                 if (rtp_session->dtls && rtp_session->dtls->bytes) {
                         *bytes = 0;
                         sync = 1;
                 }
         }
 
 
 
         if (status == SWITCH_STATUS_SUCCESS && *bytes) {
                 if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                         *flags &= ~SFF_RTCP;
                         if (rtp_session->has_rtcp) {
                                 *flags |= SFF_RTCP;
 
 #ifdef ENABLE_SRTP
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV]) {
                                         int sbytes = (int) *bytes;
                                         srtp_err_status_t stat = 0;
 
                                         if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI]) {
                                                 stat = srtp_unprotect_rtcp(rtp_session->recv_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_recv_msg_p->header, &sbytes);
                                         } else {
                                                 stat = srtp_unprotect_rtcp_mki(rtp_session->recv_ctx[rtp_session->srtp_idx_rtcp], &rtp_session->rtcp_recv_msg_p->header, &sbytes, 1);
                                         }
 
                                         if (stat) {
                                                 //++rtp_session->srtp_errs[rtp_session->srtp_idx_rtp]++;
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "RTCP UNPROTECT ERR\n");
                                         } else {
                                                 //rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                                         }
 
                                         *bytes = sbytes;
                                 }
 #endif
                                 switch_mutex_unlock(rtp_session->ice_mutex);
                                 return SWITCH_STATUS_SUCCESS;
                         }
                 }
         }
 
         switch_mutex_unlock(rtp_session->ice_mutex);
 
         if ((*bytes && (!rtp_write_ready(rtp_session, *bytes, __LINE__) || !rtp_session->has_rtp || rtp_session->has_rtcp)) || sync) {
                 rtp_session->hot_hits = 0;
                 block = 1;
                 *bytes = 0;
                 goto more;
         }
 
         if (*bytes && rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]) {
                 const char *tx_host;
                 const char *old_host;
                 const char *my_host;
 
                 char bufa[50], bufb[50], bufc[50];
 
 
                 tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtp_from_addr);
                 old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
                 my_host = switch_get_addr(bufc, sizeof(bufc), rtp_session->local_addr);
 
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG_CLEAN(rtp_session->session), SWITCH_LOG_CONSOLE,
                                                   "R %s b=%4ld %s:%u %s:%u %s:%u pt=%d ts=%u seq=%u m=%d\n",
                                                   rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "No-Name",
                                                   (long) *bytes,
                                                   my_host, switch_sockaddr_get_port(rtp_session->local_addr),
                                                   old_host, rtp_session->remote_port,
                                                   tx_host, switch_sockaddr_get_port(rtp_session->rtp_from_addr),
                                                   rtp_session->last_rtp_hdr.pt, ntohl(rtp_session->last_rtp_hdr.ts), ntohs(rtp_session->last_rtp_hdr.seq),
                                                   rtp_session->last_rtp_hdr.m);
 
         }
 
 #ifdef RTP_READ_PLOSS
         {
                 int r = (rand() % 10000) + 1;
                 if (r <= 200) {
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ALERT,
                                                           "Simulate dropped packet ......... ts: %u seq: %u\n", ntohl(rtp_session->last_rtp_hdr.ts), ntohs(rtp_session->last_rtp_hdr.seq));
                         *bytes = 0;
                 }
         }
 #endif
 
 
 
  udptl:
 
         ts = 0;
         rtp_session->recv_msg.ebody = NULL;
         now = switch_micro_time_now();
 
         if (*bytes) {
                 uint16_t seq = ntohs((uint16_t) rtp_session->last_rtp_hdr.seq);
                 ts = ntohl(rtp_session->last_rtp_hdr.ts);
 
 #ifdef DEBUG_MISSED_SEQ
                 if (rtp_session->last_seq && rtp_session->last_seq+1 != seq) {
                         //2012-11-28 18:33:11.799070 [ERR] switch_rtp.c:2883 Missed -65536 RTP frames from sequence [65536] to [-1] (missed). Time since last read [20021]
                         switch_size_t flushed_packets_diff = rtp_session->stats.inbound.flush_packet_count - rtp_session->last_flush_packet_count;
                         switch_size_t num_missed = (switch_size_t)seq - (rtp_session->last_seq+1);
 
                         if (num_missed == 1) { /* We missed one packet */
                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Missed one RTP frame with sequence [%d]%s. Time since last read [%ld]\n",
                                                                   rtp_session->last_seq+1, (flushed_packets_diff == 1) ? " (flushed by FS)" : " (missed)",
                                                                   rtp_session->last_read_time ? now-rtp_session->last_read_time : 0);
                         } else { /* We missed multiple packets */
                                 if (flushed_packets_diff == 0) {
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
                                                                           "Missed %ld RTP frames from sequence [%d] to [%d] (missed). Time since last read [%ld]\n",
                                                                           num_missed, rtp_session->last_seq+1, seq-1,
                                                                           rtp_session->last_read_time ? now-rtp_session->last_read_time : 0);
                                 } else if (flushed_packets_diff == num_missed) {
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
                                                                           "Missed %ld RTP frames from sequence [%d] to [%d] (flushed by FS). Time since last read [%ld]\n",
                                                                           num_missed, rtp_session->last_seq+1, seq-1,
                                                                           rtp_session->last_read_time ? now-rtp_session->last_read_time : 0);
                                 } else if (num_missed > flushed_packets_diff) {
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
                                                                           "Missed %ld RTP frames from sequence [%d] to [%d] (%ld packets flushed by FS, %ld packets missed)."
                                                                           " Time since last read [%ld]\n",
                                                                           num_missed, rtp_session->last_seq+1, seq-1,
                                                                           flushed_packets_diff, num_missed-flushed_packets_diff,
                                                                           rtp_session->last_read_time ? now-rtp_session->last_read_time : 0);
                                 } else {
                                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
                                                                           "Missed %ld RTP frames from sequence [%d] to [%d] (%ld packets flushed by FS). Time since last read [%ld]\n",
                                                                           num_missed, rtp_session->last_seq+1, seq-1,
                                                                           flushed_packets_diff, rtp_session->last_read_time ? now-rtp_session->last_read_time : 0);
                                 }
                         }
 
                 }
 #endif
                 rtp_session->last_seq = seq;
 
 
                 rtp_session->last_flush_packet_count = rtp_session->stats.inbound.flush_packet_count;
 
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && now - rtp_session->last_read_time > 5000000) {
                         switch_rtp_video_refresh(rtp_session);
                 }
 
                 rtp_session->last_read_time = now;
         }
 
         if (*bytes && rtp_session->has_rtp && rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]){
                 rtcp_stats(rtp_session);
         }
 
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] && !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] && !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] &&
                 *bytes && rtp_session->last_rtp_hdr.pt != rtp_session->recv_te &&
                 ts && !rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session) && ts == rtp_session->last_cng_ts) {
                 /* we already sent this frame..... */
                 *bytes = 0;
                 return SWITCH_STATUS_SUCCESS;
         }
 
         if (*bytes) {
                 if (!rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] && !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
 
 #ifdef ENABLE_SRTP
                         switch_mutex_lock(rtp_session->ice_mutex);
                         if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && rtp_session->has_rtp &&
                                 (check_recv_payload(rtp_session) ||
                                  rtp_session->last_rtp_hdr.pt == rtp_session->recv_te ||
                                  rtp_session->last_rtp_hdr.pt == rtp_session->cng_pt)) {
                                 //if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && (!rtp_session->ice.ice_user || rtp_session->has_rtp)) {
                                 int sbytes = (int) *bytes;
                                 srtp_err_status_t stat = 0;
 
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_RESET] || !rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
                                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_SECURE_RECV_RESET);
                                         srtp_dealloc(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]);
                                         rtp_session->recv_ctx[rtp_session->srtp_idx_rtp] = NULL;
                                         if ((stat = srtp_create(&rtp_session->recv_ctx[rtp_session->srtp_idx_rtp],
                                                                                         &rtp_session->recv_policy[rtp_session->srtp_idx_rtp])) || !rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
 
                                                 rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] = 0;
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error! RE-Activating Secure RTP RECV\n");
                                                 rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] = 0;
                                                 switch_mutex_unlock(rtp_session->ice_mutex);
                                                 return SWITCH_STATUS_FALSE;
                                         } else {
 
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "RE-Activating Secure RTP RECV\n");
                                                 rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                                         }
                                 }
 
                                 if (!(*flags & SFF_PLC) && rtp_session->recv_ctx[rtp_session->srtp_idx_rtp]) {
                                         if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI]) {
                                                 stat = srtp_unprotect(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp], &rtp_session->recv_msg.header, &sbytes);
                                         } else {
                                                 stat = srtp_unprotect_mki(rtp_session->recv_ctx[rtp_session->srtp_idx_rtp], &rtp_session->recv_msg.header, &sbytes, 1);
                                         }
 
                                         if (rtp_session->flags[SWITCH_RTP_FLAG_NACK] && stat == srtp_err_status_replay_fail) {
                                                 /* false alarm nack */
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "REPLAY ERR, FALSE NACK\n");
                                                 sbytes = 0;
                                                 *bytes = 0;
                                                 if (rtp_session->stats.rtcp.pkt_count) {
                                                         rtp_session->stats.rtcp.period_pkt_count--;
                                                         rtp_session->stats.rtcp.pkt_count--;
                                                 }
                                                 switch_mutex_unlock(rtp_session->ice_mutex);
                                                 goto more;
                                         }
                                 }
 
                                 if (stat && rtp_session->recv_msg.header.pt != rtp_session->recv_te && rtp_session->recv_msg.header.pt != rtp_session->cng_pt) {
                                         int errs = ++rtp_session->srtp_errs[rtp_session->srtp_idx_rtp];
                                         if (rtp_session->flags[SWITCH_RTP_FLAG_SRTP_HANGUP_ON_ERROR] && stat != srtp_err_status_replay_old) {
                                                 char *msg;
                                                 switch_srtp_err_to_txt(stat, &msg);
                                                 if (errs >= MAX_SRTP_ERRS) {
                                                         switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                           "SRTP %s unprotect failed with code %d (%s) %ld bytes %d errors\n",
                                                                                           rtp_type(rtp_session), stat, msg, (long)*bytes, errs);
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                           "Ending call due to SRTP error\n");
                                                         switch_channel_hangup(channel, SWITCH_CAUSE_SRTP_READ_ERROR);
                                                 } else if (errs >= WARN_SRTP_ERRS && !(errs % WARN_SRTP_ERRS)) {
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                                           "SRTP %s unprotect failed with code %d (%s) %ld bytes %d errors\n",
                                                                                           rtp_type(rtp_session), stat, msg, (long)*bytes, errs);
                                                 }
                                         }
                                         sbytes = 0;
                                 } else {
                                         rtp_session->srtp_errs[rtp_session->srtp_idx_rtp] = 0;
                                 }
 
                                 *bytes = sbytes;
                         }
                         switch_mutex_unlock(rtp_session->ice_mutex);
 #endif
                 }
 
 
                 if (rtp_session->has_rtp) {
                         if (rtp_session->recv_msg.header.cc > 0) { /* Contributing Source Identifiers (4 bytes = sizeof CSRC header)*/
                                 rtp_session->recv_msg.ebody = RTP_BODY(rtp_session) + (rtp_session->recv_msg.header.cc * 4);
                         }
 
                         /* recalculate body length in case rtp extension used */
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] && !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] &&
                                 rtp_session->recv_msg.header.x) { /* header extensions */
                                 uint16_t length;
 
                                 rtp_session->recv_msg.ext = (switch_rtp_hdr_ext_t *) RTP_BODY(rtp_session);
                                 length = ntohs((uint16_t)rtp_session->recv_msg.ext->length);
 
                                 if (length < SWITCH_RTP_MAX_BUF_LEN_WORDS) {
                                         rtp_session->recv_msg.ebody = (char *)rtp_session->recv_msg.ext + (length * 4) + 4;
                                         if (*bytes > (length * 4 + 4)) {
                                                 *bytes -= (length * 4 + 4);
                                         } else {
                                                 *bytes = 0;
                                         }
                                 }
                         }
 
 
 #ifdef DEBUG_CHROME
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->has_rtp) {
 
                                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO,
                                                                   "VIDEO: seq: %d ts: %u len: %ld %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x mark: %d\n",
                                                                   ntohs(rtp_session->last_rtp_hdr.seq), ntohl(rtp_session->last_rtp_hdr.ts), *bytes,
                                                                   *((uint8_t *)RTP_BODY(rtp_session)), *((uint8_t *)RTP_BODY(rtp_session) + 1),
                                                                   *((uint8_t *)RTP_BODY(rtp_session) + 2), *((uint8_t *)RTP_BODY(rtp_session) + 3),
                                                                   *((uint8_t *)RTP_BODY(rtp_session) + 4), *((uint8_t *)RTP_BODY(rtp_session) + 5),
                                                                   *((uint8_t *)RTP_BODY(rtp_session) + 6), *((uint8_t *)RTP_BODY(rtp_session) + 7),
                                                                   *((uint8_t *)RTP_BODY(rtp_session) + 8), *((uint8_t *)RTP_BODY(rtp_session) + 9),
                                                                   *((uint8_t *)RTP_BODY(rtp_session) + 10), rtp_session->last_rtp_hdr.m);
 
                         }
 #endif
 
 
 
                 }
 
 
                 rtp_session->stats.inbound.raw_bytes += *bytes;
 
                 if (rtp_session->last_rtp_hdr.pt == rtp_session->recv_te) {
                         rtp_session->stats.inbound.dtmf_packet_count++;
                 } else if (rtp_session->last_rtp_hdr.pt == rtp_session->cng_pt || rtp_session->last_rtp_hdr.pt == 13) {
                         rtp_session->stats.inbound.cng_packet_count++;
                 } else {
                         rtp_session->stats.inbound.media_packet_count++;
                         rtp_session->stats.inbound.media_bytes += *bytes;
                 }
 
                 rtp_session->stats.inbound.packet_count++;
         }
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] &&
                 ((rtp_session->recv_te && rtp_session->last_rtp_hdr.pt == rtp_session->recv_te) ||
                  (*bytes < rtp_header_len && *bytes > 0 && !(rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] || rtp_session->flags[SWITCH_RTP_FLAG_UDPTL])))) {
                 return SWITCH_STATUS_BREAK;
         }
 
         if (ts) {
                 rtp_session->prev_read_ts = rtp_session->last_read_ts;
                 rtp_session->last_read_ts = ts;
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_BYTESWAP] && check_recv_payload(rtp_session)) {
                 switch_swap_linear((int16_t *)RTP_BODY(rtp_session), (int) *bytes - rtp_header_len);
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_KILL_JB]) {
                 rtp_session->flags[SWITCH_RTP_FLAG_KILL_JB] = 0;
 
                 if (rtp_session->jb) {
                         switch_jb_destroy(&rtp_session->jb);
                 }
 
                 if (rtp_session->vb) {
                         switch_jb_destroy(&rtp_session->vb);
                 }
 
                 if (rtp_session->vbw) {
                         switch_jb_destroy(&rtp_session->vbw);
                 }
 
         }
 
         if (rtp_session->has_rtp && *bytes) {
                 uint32_t read_ssrc = ntohl(rtp_session->last_rtp_hdr.ssrc);
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] || rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
                         return SWITCH_STATUS_SUCCESS;
                 }
 
                 if (rtp_session->vb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                         status = switch_jb_put_packet(rtp_session->vb, (switch_rtp_packet_t *) &rtp_session->recv_msg, *bytes);
 
                         if (status == SWITCH_STATUS_TOO_LATE) {
                                 goto more;
                         }
 
                         status = SWITCH_STATUS_FALSE;
                         *bytes = 0;
 
                         if (!return_jb_packet) {
                                 return status;
                         }
                 }
 
                 if (rtp_session->jb && jb_valid(rtp_session)) {
                         if (rtp_session->last_jb_read_ssrc && rtp_session->last_jb_read_ssrc != read_ssrc) {
                                 switch_jb_reset(rtp_session->jb);
                         }
 
                         rtp_session->last_jb_read_ssrc = read_ssrc;
                 }
 
                 if (rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
 
                         status = switch_jb_put_packet(rtp_session->jb, (switch_rtp_packet_t *) &rtp_session->recv_msg, *bytes);
                         if (status == SWITCH_STATUS_TOO_LATE) {
                                 goto more;
                         }
 
 
                         status = SWITCH_STATUS_FALSE;
                         *bytes = 0;
 
                         if (!return_jb_packet) {
                                 return status;
                         }
                 } else {
                         if (rtp_session->last_rtp_hdr.m && rtp_session->last_rtp_hdr.pt != rtp_session->recv_te &&
                                 !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && !(rtp_session->rtp_bugs & RTP_BUG_IGNORE_MARK_BIT) && 
                                 rtp_session->last_read_ts - rtp_session->prev_read_ts < rtp_session->samples_per_interval * 3) {  
                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_FLUSH);
                         } else if (rtp_session->last_jb_read_ssrc && rtp_session->last_jb_read_ssrc != read_ssrc) {
                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_FLUSH);
                         }
                 }
         }
 
         if (!*bytes || rtp_session->has_rtp) {
 
                 if (rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                         switch_status_t jstatus = switch_jb_get_packet(rtp_session->jb, (switch_rtp_packet_t *) &rtp_session->recv_msg, bytes);
 
                         status = jstatus;
 
                         switch(jstatus) {
                         case SWITCH_STATUS_MORE_DATA:
                                 if (rtp_session->punts < 4) {
                                         block = 1;
                                         goto more;
                                 }
                                 *bytes = 0;
                                 break;
                         case SWITCH_STATUS_NOTFOUND:
                                 {
                                         int pt = get_recv_payload(rtp_session);
                                         (*flags) |= SFF_PLC;
                                         status = SWITCH_STATUS_SUCCESS;
                                         *bytes = switch_jb_get_last_read_len(rtp_session->jb);
                                         rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
                                         rtp_session->last_rtp_hdr.pt = pt;
                                 }
                                 break;
                         case SWITCH_STATUS_BREAK:
                                 break;
                         case SWITCH_STATUS_SUCCESS:
                         case SWITCH_STATUS_TIMEOUT:
                         default:
                                 {
                                         if (status == SWITCH_STATUS_TIMEOUT) {
                                                 rtp_session->skip_timer = 1;
                                         }
                                         rtp_session->stats.inbound.jb_packet_count++;
                                         status = SWITCH_STATUS_SUCCESS;
                                         rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
                                         if (++rtp_session->clean > 200) {
                                                 rtp_session->punts = 0;
                                         }
                                         if (!xcheck_jitter) {
                                                 check_jitter(rtp_session);
                                         }
                                 }
                                 break;
                         }
                 }
 
                 if (rtp_session->vb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                         switch_status_t vstatus = switch_jb_get_packet(rtp_session->vb, (switch_rtp_packet_t *) &rtp_session->recv_msg, bytes);
                         status = vstatus;
 
                         switch(vstatus) {
                         case SWITCH_STATUS_RESTART:
                                 switch_core_session_request_video_refresh(rtp_session->session);
                                 status = SWITCH_STATUS_BREAK;
                                 break;
                         case SWITCH_STATUS_MORE_DATA:
                                 status = SWITCH_STATUS_BREAK;
                                 break;
                         case SWITCH_STATUS_BREAK:
                         default:
                                 break;
                         }
 
                         if (vstatus == SWITCH_STATUS_NOTFOUND && rtp_session->flags[SWITCH_RTP_FLAG_TEXT]) {
                                 int pt = get_recv_payload(rtp_session);
                                 (*flags) |= SFF_PLC;
                                 status = SWITCH_STATUS_SUCCESS;
                                 *bytes = switch_jb_get_last_read_len(rtp_session->vb);
                                 rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
                                 if (pt > -1) {
                                         rtp_session->last_rtp_hdr.pt = pt;
                                 }
                         }
 
                         if (vstatus == SWITCH_STATUS_SUCCESS) {
                                 rtp_session->last_rtp_hdr = rtp_session->recv_msg.header;
 
                                 if (!xcheck_jitter) {
                                         check_jitter(rtp_session);
                                 }
                         }
                 }
         }
 
         return status;
 }

◆ reset_jitter_seq()

static void reset_jitter_seq ( switch_rtp_t * rtp_session )

static

Definition at line 1646 of file switch_rtp.c.

References switch_rtp::consecutive_flaws, switch_rtp_stats_t::inbound, switch_rtp::jitter_lead, switch_rtp_numbers_t::last_flaw, switch_rtp_numbers_t::last_proc_time, switch_rtp_numbers_t::last_processed_seq, and switch_rtp::stats.

Referenced by check_jitter(), do_flush(), rtp_common_read(), rtp_flush_read_buffer(), switch_rtp_clear_flag(), and switch_rtp_set_flag().

 {
         rtp_session->stats.inbound.last_proc_time = 0;
         rtp_session->stats.inbound.last_processed_seq = 0;
         rtp_session->jitter_lead = 0;
         rtp_session->consecutive_flaws = 0;
         rtp_session->stats.inbound.last_flaw = 0;
 }

◆ rtcp_generate_report_block()

static void rtcp_generate_report_block	(	switch_rtp_t *	rtp_session,
		struct switch_rtcp_report_block *	rtcp_report_block,
		int16_t	extra_expected
	)

static

Definition at line 1835 of file switch_rtp.c.

Referenced by check_rtcp_and_ice().

 {
 #ifdef DEBUG_RTCP
         switch_core_session_t *session = switch_core_memory_pool_get_data(rtp_session->pool, "__session");
 #endif
         switch_rtcp_numbers_t * stats=&rtp_session->stats.rtcp;
         uint32_t expected_pkt, dlsr = 0;
         int32_t pkt_lost;
 
         /* Packet loss */
         if (stats->rtcp_rtp_count == 0) {
                 expected_pkt = stats->high_ext_seq_recv - stats->base_seq + 1;
         } else {
                 expected_pkt = stats->high_ext_seq_recv - stats->last_rpt_ext_seq + extra_expected;
         }
 
         pkt_lost = expected_pkt - stats->period_pkt_count;
         if (pkt_lost < 0) pkt_lost = 0;
 
         stats->cum_lost=stats->cum_lost+pkt_lost;
         if (expected_pkt > 0 && pkt_lost > 0) {
                 rtcp_report_block->fraction = (pkt_lost == expected_pkt ? 255 : (uint8_t) (pkt_lost * 256 / expected_pkt));             /* if X packets were expected and X was lost, we want 0xff to be reported, not 0 */
         } else {
                 rtcp_report_block->fraction = 0;
         }
 #if SWITCH_BYTE_ORDER == __BIG_ENDIAN
         rtcp_report_block->lost = stats->cum_lost;
 #else
         /* Reversing byte order for 24bits */
         rtcp_report_block->lost = htonl(stats->cum_lost) >> 8;
 #endif
 
 #ifdef DEBUG_RTCP
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO])
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "rtcp_generate_sr: stats_ssrc[%u]\nreceived[%d]\nexpected[%d]\ncum[%d]\nlost[%d|%d/256]pkt\nlast_seq[%d]\ncyc[%d]\nlast_rpt_seq[%d]\ncyc[%d]\nssrc[%d]\n",
                                                 rtp_session->remote_ssrc, stats->period_pkt_count, expected_pkt,
                                                 stats->cum_lost, pkt_lost, rtcp_report_block->fraction, stats->high_ext_seq_recv&0x0000ffff,
                                                 stats->cycle, stats->last_rpt_ext_seq&0x0000ffff, stats->last_rpt_cycle, rtp_session->stats.rtcp.peer_ssrc
                                                 );
 #endif
         rtcp_report_block->highest_sequence_number_received = htonl(stats->high_ext_seq_recv);
 
         /* Jitter */
         rtcp_report_block->jitter = htonl((uint32_t)stats->inter_jitter);
 
         /* Delay since Last Sender Report (DLSR) : 32bits, 1/65536 seconds */
         if (stats->last_recv_lsr_local) {
                 uint32_t lsr_now = calc_local_lsr_now();
                 /* check lsr_now: what we just read from clock may be in the past (race cond), don't send huge dlsr due to uint wrap around */
                 if (lsr_now > stats->last_recv_lsr_local) {
                         dlsr = lsr_now - stats->last_recv_lsr_local;
                 }
         }
         rtcp_report_block->lsr = stats->last_recv_lsr_peer;
         rtcp_report_block->dlsr = htonl(dlsr);
         if (rtp_session->stats.rtcp.peer_ssrc) {
                 rtcp_report_block->ssrc = htonl(rtp_session->stats.rtcp.peer_ssrc);
         } else {
                 /* if remote is not sending rtcp reports, take ssrc as assigned from rtp */
                 rtcp_report_block->ssrc = htonl(rtp_session->remote_ssrc);
         }
         
         stats->rtcp_rtp_count++;
 }

◆ rtcp_generate_sender_info()

static void rtcp_generate_sender_info	(	switch_rtp_t *	rtp_session,
		struct switch_rtcp_sender_info *	sr
	)

static

Definition at line 1795 of file switch_rtp.c.

References switch_rtp::last_write_ts, switch_rtcp_sender_info::ntp_lsw, switch_rtcp_sender_info::ntp_msw, NTP_TIME_OFFSET, switch_rtcp_sender_info::oc, switch_rtp_stats_t::outbound, switch_rtp_numbers_t::packet_count, switch_rtcp_sender_info::pc, switch_rtp::pool, switch_rtp_numbers_t::raw_bytes, switch_rtp_stats_t::rtcp, switch_rtcp_numbers_t::ssrc, switch_rtp::stats, SWITCH_CHANNEL_SESSION_LOG, switch_core_memory_pool_get_data(), SWITCH_LOG_DEBUG10, switch_log_printf(), switch_micro_time_now(), switch_time_exp_gmt(), switch_time_exp_t::tm_hour, switch_time_exp_t::tm_mday, switch_time_exp_t::tm_min, switch_time_exp_t::tm_mon, switch_time_exp_t::tm_sec, switch_time_exp_t::tm_usec, switch_time_exp_t::tm_year, and switch_rtcp_sender_info::ts.

Referenced by check_rtcp_and_ice().

                                                                                                     {
         switch_core_session_t *session = switch_core_memory_pool_get_data(rtp_session->pool, "__session");
         switch_time_t now;
         uint32_t sec, ntp_sec, ntp_usec;
         switch_time_exp_t now_hr;
         now = switch_micro_time_now();
         sec = (uint32_t)(now/1000000);        /* convert to seconds     */
         ntp_sec = sec+NTP_TIME_OFFSET;  /* convert to NTP seconds */
         sr->ntp_msw = htonl(ntp_sec);   /* store result in "most significant word" */
         ntp_usec = (uint32_t)(now - (sec*1000000)); /* remove seconds to keep only the microseconds */
         sr->ntp_lsw = htonl((u_long)(ntp_usec*(double)(((uint64_t)1)<<32)*1.0e-6)); /* convert microseconds to fraction of 32bits and store result in "least significatn word" */
 
         sr->ts = htonl(rtp_session->last_write_ts);
         sr->pc = htonl(rtp_session->stats.outbound.packet_count);
         sr->oc = htonl(rtp_session->stats.outbound.raw_bytes - rtp_session->stats.outbound.packet_count * sizeof(srtp_hdr_t));
 
         switch_time_exp_gmt(&now_hr,now);
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG10,"Sending an RTCP packet[%04d-%02d-%02d %02d:%02d:%02d.%d] lsr[%u] msw[%u] lsw[%u] stats_ssrc[%u] packet_count[%u] OC[%u]\n",
                         1900 + now_hr.tm_year,  now_hr.tm_mday, now_hr.tm_mon, now_hr.tm_hour, now_hr.tm_min, now_hr.tm_sec, now_hr.tm_usec,
                         (ntohl(sr->ntp_lsw)&0xffff0000)>>16 | (ntohl(sr->ntp_msw)&0x0000ffff)<<16,
                         ntohl(sr->ntp_msw),ntohl(sr->ntp_lsw), rtp_session->stats.rtcp.ssrc, ntohl(sr->pc), ntohl(sr->oc)
                         );
 }

◆ rtcp_stats()

static int rtcp_stats ( switch_rtp_t * rtp_session )

static

Definition at line 1952 of file switch_rtp.c.

Referenced by read_rtp_packet().

 {
         switch_core_session_t *session = switch_core_memory_pool_get_data(rtp_session->pool, "__session");
         srtp_hdr_t * hdr = &rtp_session->last_rtp_hdr;
         switch_rtcp_numbers_t * stats = &rtp_session->stats.rtcp;
         uint32_t packet_spacing_diff = 0, pkt_tsdiff, pkt_extended_seq;
         uint16_t pkt_seq, seq_diff, max_seq;
         const int MAX_DROPOUT = 3000;
         const int MAX_MISORDER = 100;
         const int RTP_SEQ_MOD = (1<<16);
 
         if(!rtp_session->rtcp_sock_output || !rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP] || rtp_session->flags[SWITCH_RTP_FLAG_RTCP_PASSTHRU] || !rtp_session->rtcp_interval)
                 return 0; /* do not process RTCP in current state */
 
         pkt_seq = (uint16_t) ntohs((uint16_t) rtp_session->last_rtp_hdr.seq);
 
         /* Detect sequence number cycle change */
         max_seq = stats->high_ext_seq_recv&0x0000ffff;
         seq_diff = pkt_seq - max_seq;
 
         if (seq_diff < MAX_DROPOUT) {  /* in order, with permissible gap */
                 if (pkt_seq < max_seq) {
                         stats->cycle++;
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "rtcp_stats:[cycle change] pkt_seq[%d] cycle[%d] max_seq[%d] stats_ssrc[%u] local_ts[%u]\n",
                                         pkt_seq, stats->cycle, max_seq, stats->ssrc, rtp_session->timer.samplecount);
                 }
                 pkt_extended_seq = stats->cycle << 16 | pkt_seq; /* getting the extended packet extended sequence ID */
                 if (pkt_extended_seq > stats->high_ext_seq_recv) {
                         stats->high_ext_seq_recv = pkt_extended_seq;
                 }
         }
         else if (seq_diff <= (RTP_SEQ_MOD - MAX_MISORDER)) {   /* the sequence number made a very large jump */
                 if (pkt_seq == stats->bad_seq) {
                         rtcp_stats_init(rtp_session);
                 } else {
                         stats->bad_seq = (pkt_seq + 1) & (RTP_SEQ_MOD-1);
                 }
                 return 0; /* no stats, packet is out of sync and will be accounted as lost */
         } else {
                 /* duplicate or reordered packet */
         }
 
         /* Verify that we are on the same stream source (we do not support multiple sources) */
         if (ntohl(hdr->ssrc) != stats->ssrc || !stats->init) {
                 rtcp_stats_init(rtp_session);
         }
 
         stats->period_pkt_count++;
         stats->pkt_count++;
 #ifdef DEBUG_RTCP
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG10, "rtcp_stats: period_pkt_count[%d]last_seq[%d]cycle[%d]stats_ssrc[%u]local_ts[%u]\n",
                         stats->period_pkt_count, pkt_seq, stats->cycle, stats->ssrc, rtp_session->write_timer.samplecount);
 #endif
         /* Interarrival jitter calculation */
         pkt_tsdiff = abs((int32_t)(rtp_session->timer.samplecount - ntohl(hdr->ts)));  /* relative transit times for this packet */
         if (stats->pkt_count < 2) { /* Can not compute Jitter with only one packet */
                 stats->last_pkt_tsdiff = pkt_tsdiff;
         } else {
                 /* Jitter : difference of relative transit times for the two packets */
                 packet_spacing_diff = abs((int32_t)(pkt_tsdiff - stats->last_pkt_tsdiff));
                 stats->last_pkt_tsdiff = pkt_tsdiff;
                 /* Interarrival jitter estimation, "J(i) = J(i-1) + ( |D(i-1,i)| - J(i-1) )/16" */
                 stats->inter_jitter = (stats->inter_jitter + (((double)packet_spacing_diff - stats->inter_jitter) /16.));
         }
 
 #ifdef DEBUG_RTCP
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG10, "rtcp_stats: pkt_ts[%d]local_ts[%d]diff[%d]pkt_spacing[%d]inter_jitter[%f]seq[%d]stats_ssrc[%d]",
                         ntohl(hdr->ts), rtp_session->timer.samplecount, pkt_tsdiff, packet_spacing_diff, stats->inter_jitter, ntohs(hdr->seq), stats->ssrc);
 #endif
         return 1;
 }

◆ rtcp_stats_init()

static void rtcp_stats_init ( switch_rtp_t * rtp_session )

static

Definition at line 1901 of file switch_rtp.c.

Referenced by rtcp_stats(), and switch_rtp_reset().

 {
         switch_rtcp_numbers_t * stats = &rtp_session->stats.rtcp;
         srtp_hdr_t * hdr = &rtp_session->last_rtp_hdr;
         switch_core_session_t *session = switch_core_memory_pool_get_data(rtp_session->pool, "__session");
         stats->ssrc = ntohl(hdr->ssrc);
         stats->last_rpt_ts = rtp_session->write_timer.samplecount;
         stats->init = 1;
         stats->last_rpt_ext_seq = 0;
         stats->last_rpt_cycle = 0;
         stats->last_pkt_tsdiff = 0;
         stats->inter_jitter = 0;
         stats->cycle = 0;
         stats->high_ext_seq_recv = ntohs((uint16_t)hdr->seq);
         stats->base_seq = ntohs((uint16_t)hdr->seq);
         stats->bad_seq = (1<<16) + 1; /* Make sure we wont missmatch 2 consecutive packets, so seq == bad_seq is false */
         stats->cum_lost = 0;
         stats->period_pkt_count = 0;
         stats->sent_pkt_count = 0;
         stats->pkt_count = 0;
         stats->rtcp_rtp_count = 0;
 
         if (!rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "rtcp_stats_init: %s rtcp disabled\n", rtp_type(rtp_session));
         } else if (!rtp_session->rtcp_sock_output) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "rtcp_stats_init: %s no rtcp socket\n", rtp_type(rtp_session));
         } else if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_PASSTHRU]) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "rtcp_stats_init: %s rtcp passthru\n", rtp_type(rtp_session));
         } else {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "rtcp_stats_init: %s ssrc[%u] base_seq[%u]\n", rtp_type(rtp_session), stats->ssrc, stats->base_seq);
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP] && (switch_core_media_codec_get_cap(rtp_session->session,
                                                                                                                         SWITCH_MEDIA_TYPE_AUDIO, SWITCH_CODEC_FLAG_HAS_ADJ_BITRATE))) {
                         kalman_estimator_t *estimators[KALMAN_SYSTEM_MODELS];
                         cusum_kalman_detector_t *detectors[KALMAN_SYSTEM_MODELS];
 
                         rtp_session->flags[SWITCH_RTP_FLAG_ADJ_BITRATE_CAP] = 1;
                         rtp_session->flags[SWITCH_RTP_FLAG_ESTIMATORS] = 1;
 
                         rtp_session->estimators[EST_LOSS] = switch_core_alloc(rtp_session->pool, sizeof(*estimators[0]));
                         switch_kalman_init(rtp_session->estimators[EST_LOSS],0.1,0.1);
                         rtp_session->estimators[EST_RTT] = switch_core_alloc(rtp_session->pool, sizeof(*estimators[0]));
                         switch_kalman_init(rtp_session->estimators[EST_RTT],0.03,1);
                         rtp_session->detectors[EST_RTT] = switch_core_alloc(rtp_session->pool, sizeof(*detectors[0]));
                         switch_kalman_cusum_init(rtp_session->detectors[EST_RTT],0.005,0.5);
                         rtp_session->detectors[EST_LOSS] = switch_core_alloc(rtp_session->pool, sizeof(*detectors[0]));
                         switch_kalman_cusum_init(rtp_session->detectors[EST_LOSS], 0.5, 1);
         }
 }

◆ rtp_common_read()

static int rtp_common_read	(	switch_rtp_t *	rtp_session,
		switch_payload_t *	payload_type,
		payload_map_t **	pmapP,
		switch_frame_flag_t *	flags,
		switch_io_flag_t	io_flags
	)

static

NOOP

Definition at line 7301 of file switch_rtp.c.

References switch_rtp_ice_t::addr, switch_rtp::auto_adj_used, switch_rtp::autoadj_tally, switch_rtp::autoadj_threshold, switch_rtp::autoadj_window, switch_rtp::bad_stream, CF_AUDIO_VIDEO_BUNDLE, check_recv_payload(), check_rtcp_and_ice(), check_timeout(), switch_rtp::cng_count, switch_rtp::cng_pt, do_2833(), do_flush(), do_mos(), switch_rtp::dtmf_data, switch_rtp_rfc2833_data::dtmf_inqueue, switch_rtp_rfc2833_data::dtmf_queue, switch_rtp_numbers_t::error_log, switch_rtp::flags, error_period::flaws, switch_rtp_numbers_t::flaws, switch_rtp::from_addr, handle_rfc2833(), switch_rtp::has_rtp, rtp_msg_t::header, rtcp_msg_t::header, switch_rtp::hot_hits, switch_rtp::ice, switch_rtp::ice_mutex, switch_rtp_ice_t::ice_user, if(), switch_rtp_rfc2833_data::in_digit_sanity, switch_rtp_rfc2833_data::in_digit_ts, switch_rtp_stats_t::inbound, switch_timer::interval, switch_rtp::invalid_handler, INVALID_PT, switch_rtp::jb, jb_valid(), switch_rtp::jitter_lead, JITTER_LEAD_FRAMES, switch_rtp::last_cng_ts, switch_rtp::last_media, switch_rtp::last_read_ts, switch_rtp::last_rtp_hdr, switch_rtp::max_missed_packets, switch_rtp::media_timeout, memset(), switch_rtp::missed_count, switch_rtp::ms_per_packet, switch_rtp::one_second, switch_rtp_rfc2833_data::out_digit_dur, switch_rtp::pause_jb, switch_rtp_numbers_t::period_packet_count, process_rtcp_packet(), switch_rtp_stats_t::read_count, READ_DEC, READ_INC, switch_rtp::read_pollfd, read_rtcp_packet(), read_rtp_packet(), switch_rtp::recv_msg, switch_rtp::recv_te, switch_rtp::remote_addr, switch_rtp::remote_port, reset_jitter_seq(), RESULT_CONTINUE, RESULT_GOTO_END, RESULT_GOTO_RECVFROM, RESULT_GOTO_TIMERCHECK, return_cng_frame, switch_rtp::rtcp_from_addr, switch_rtp::rtcp_read_pollfd, switch_rtp::rtcp_recv_msg, switch_rtp::rtcp_recv_msg_p, switch_rtp::rtcp_remote_addr, switch_rtp::rtcp_send_msg, switch_rtp::rtcp_sock_output, RTP_BODY, RTP_BUG_ACCEPT_ANY_PACKETS, RTP_BUG_ALWAYS_AUTO_ADJUST, RTP_BUG_IGNORE_MARK_BIT, switch_rtp::rtp_bugs, rtp_flush_read_buffer(), switch_rtp::rtp_from_addr, rtp_header_len, rtp_session_name, rtp_type, switch_rtp::samples_per_interval, switch_rtp::send_ctx, switch_rtp::sending_dtmf, switch_rtp::session, SFF_CNG, SFF_NOT_AUDIO, SFF_PROXY_PACKET, SFF_RTCP, SFF_UDPTL_PACKET, switch_rtp_numbers_t::skip_packet_count, switch_rtp::skip_timer, switch_rtp::sock_input, switch_rtp::srtp_idx_rtcp, switch_rtp::stats, switch_channel_get_partner_uuid(), switch_channel_get_private(), switch_channel_get_variable, SWITCH_CHANNEL_SESSION_LOG, switch_channel_set_variable, switch_channel_test_flag(), switch_cmp_addr(), switch_cond_next(), switch_core_session_get_channel(), switch_core_session_locate, switch_core_session_rwunlock(), switch_core_timer_next(), switch_core_timer_sync(), SWITCH_CRYPTO_MKI_INDEX, SWITCH_FALSE, switch_get_addr(), SWITCH_IO_FLAG_NOBLOCK, SWITCH_IO_FLAG_SINGLE_READ, switch_jb_poll(), SWITCH_LOG_DEBUG, SWITCH_LOG_DEBUG1, SWITCH_LOG_DEBUG10, SWITCH_LOG_DEBUG3, SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), SWITCH_LOG_WARNING, switch_mutex_lock(), switch_mutex_unlock(), switch_poll(), switch_queue_size(), switch_rtp_clear_flag(), SWITCH_RTP_CNG_PAYLOAD, SWITCH_RTP_FLAG_AUTOADJ, SWITCH_RTP_FLAG_AUTOFLUSH, SWITCH_RTP_FLAG_BREAK, SWITCH_RTP_FLAG_DATAWAIT, SWITCH_RTP_FLAG_DTMF_ON, SWITCH_RTP_FLAG_ENABLE_RTCP, SWITCH_RTP_FLAG_FLUSH, SWITCH_RTP_FLAG_GOOGLEHACK, SWITCH_RTP_FLAG_MUTE, SWITCH_RTP_FLAG_NOBLOCK, SWITCH_RTP_FLAG_PAUSE, SWITCH_RTP_FLAG_PROXY_MEDIA, SWITCH_RTP_FLAG_RTCP_AUTOADJ, SWITCH_RTP_FLAG_RTCP_MUX, SWITCH_RTP_FLAG_RTCP_PASSTHRU, SWITCH_RTP_FLAG_SECURE_SEND, SWITCH_RTP_FLAG_SECURE_SEND_MKI, SWITCH_RTP_FLAG_STICKY_FLUSH, SWITCH_RTP_FLAG_TEXT, SWITCH_RTP_FLAG_UDPTL, SWITCH_RTP_FLAG_USE_TIMER, SWITCH_RTP_FLAG_VIDEO, SWITCH_RTP_FLUSH_ONCE, switch_rtp_ready(), switch_rtp_reset_media_timer(), switch_rtp_set_flag(), switch_rtp_set_remote_address(), switch_rtp_test_flag(), switch_snprintf(), switch_sockaddr_get_port(), switch_socket_sendto(), SWITCH_STATUS_BREAK, SWITCH_STATUS_FALSE, SWITCH_STATUS_GENERR, SWITCH_STATUS_IS_BREAK, SWITCH_STATUS_SUCCESS, SWITCH_STATUS_TIMEOUT, switch_strerror_r(), SWITCH_TRUE, switch_yield, switch_rtp::sync_packets, switch_rtp::timer, timer_check(), using_ice(), switch_rtp::vb, and switch_rtcp_hdr_s::version.

Referenced by switch_rtp_read(), switch_rtp_zerocopy_read(), and switch_rtp_zerocopy_read_frame().

 {
 
         switch_channel_t *channel = NULL;
         switch_size_t bytes = 0;
         switch_size_t rtcp_bytes = 0;
         switch_status_t status = SWITCH_STATUS_SUCCESS, poll_status = SWITCH_STATUS_SUCCESS;
         switch_status_t rtcp_status = SWITCH_STATUS_SUCCESS, rtcp_poll_status = SWITCH_STATUS_SUCCESS;
         int check = 0;
         int ret = -1;
         int sleep_mss = 1000;
         int poll_sec = 5;
         int poll_loop = 0;
         int fdr = 0;
         int rtcp_fdr = 0;
         int hot_socket = 0;
         int read_loops = 0;
         int slept = 0;
         switch_bool_t got_jb = SWITCH_FALSE;
 
         if (!switch_rtp_ready(rtp_session)) {
                 return -1;
         }
 
         if (rtp_session->session) {
                 channel = switch_core_session_get_channel(rtp_session->session);
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                 sleep_mss = rtp_session->timer.interval * 1000;
         }
 
         READ_INC(rtp_session);
 
 
 
         while (switch_rtp_ready(rtp_session)) {
                 int do_cng = 0;
                 int read_pretriggered = 0;
                 int has_rtcp = 0;
                 int got_rtp_poll = 0;
 
                 bytes = 0;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] &&
                         !rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] &&
                         !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] &&
                         !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] &&
                         rtp_session->read_pollfd) {
 
                         if (rtp_session->jb && !rtp_session->pause_jb && jb_valid(rtp_session)) {
                                 while (switch_poll(rtp_session->read_pollfd, 1, &fdr, 0) == SWITCH_STATUS_SUCCESS) {
                                         status = read_rtp_packet(rtp_session, &bytes, flags, pmapP, SWITCH_STATUS_SUCCESS, SWITCH_FALSE);
 
                                         if (status == SWITCH_STATUS_GENERR) {
                                                 ret = -1;
                                                 goto end;
                                         }
 
                                         if ((*flags & SFF_RTCP)) {
                                                 *flags &= ~SFF_RTCP;
                                                 has_rtcp = 1;
                                                 read_pretriggered = 0;
                                                 goto rtcp;
                                         }
 
                                         if (status == SWITCH_STATUS_BREAK) {
                                                 read_pretriggered = 1;
                                                 break;
                                         }
                                 }
 
                         } else if ((rtp_session->flags[SWITCH_RTP_FLAG_AUTOFLUSH] || rtp_session->flags[SWITCH_RTP_FLAG_STICKY_FLUSH])) {
 
                                 if (switch_poll(rtp_session->read_pollfd, 1, &fdr, 0) == SWITCH_STATUS_SUCCESS) {
                                         status = read_rtp_packet(rtp_session, &bytes, flags, pmapP, SWITCH_STATUS_SUCCESS, SWITCH_FALSE);
                                         if (status == SWITCH_STATUS_GENERR) {
                                                 ret = -1;
                                                 goto end;
                                         }
                                         if ((*flags & SFF_RTCP)) {
                                                 *flags &= ~SFF_RTCP;
                                                 has_rtcp = 1;
                                                 read_pretriggered = 0;
                                                 goto rtcp;
                                         }
 
                                         /* switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG, "Initial (%i) %d\n", status, bytes); */
                                         if (status != SWITCH_STATUS_FALSE) {
                                                 read_pretriggered = 1;
                                         }
 
                                         if (bytes) {
                                                 if (switch_poll(rtp_session->read_pollfd, 1, &fdr, 0) == SWITCH_STATUS_SUCCESS) {
                                                         rtp_session->hot_hits++;//+= rtp_session->samples_per_interval;
 
                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10, "%s Hot Hit %d\n",
                                                                                           rtp_session_name(rtp_session),
                                                                                           rtp_session->hot_hits);
                                                 } else {
                                                         rtp_session->hot_hits = 0;
                                                 }
                                         }
 
                                         if (rtp_session->hot_hits > 1 && !rtp_session->sync_packets) {// >= (rtp_session->samples_per_second * 30)) {
                                                 hot_socket = 1;
                                         }
                                 } else {
                                         rtp_session->hot_hits = 0;
                                 }
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_TEXT]) {
                                 ///NOOP
                         } else if (hot_socket && (rtp_session->hot_hits % 10) != 0) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10, "%s timer while HOT\n", rtp_session_name(rtp_session));
                                 switch_core_timer_next(&rtp_session->timer);
                         } else if (hot_socket) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10, "%s skip timer once\n", rtp_session_name(rtp_session));
                                 rtp_session->sync_packets++;
                                 switch_core_timer_sync(&rtp_session->timer);
                                 reset_jitter_seq(rtp_session);
                         } else {
 
                                 if (rtp_session->sync_packets) {
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10,
                                                                           "%s Auto-Flush catching up %d packets (%d)ms.\n",
                                                                           rtp_session_name(rtp_session),
                                                                           rtp_session->sync_packets, (rtp_session->ms_per_packet * rtp_session->sync_packets) / 1000);
                                         if (!rtp_session->flags[SWITCH_RTP_FLAG_PAUSE]) {
                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "%s syncing %d %s packet(s)\n",
                                                                                  rtp_session_name(rtp_session),
                                                                                   rtp_session->sync_packets, rtp_type(rtp_session));
 
                                                 rtp_session->bad_stream++;
                                                 rtp_session->stats.inbound.flaws += rtp_session->sync_packets;
 
                                                 if (rtp_session->stats.inbound.error_log) {
                                                         rtp_session->stats.inbound.error_log->flaws += rtp_session->sync_packets;
                                                 }
                                         }
 
                                         switch_core_timer_sync(&rtp_session->timer);
                                         reset_jitter_seq(rtp_session);
                                         rtp_session->hot_hits = 0;
                                 } else {
                                         if (slept) {
                                                 switch_cond_next();
                                         } else {
                                                 if (rtp_session->skip_timer) {
                                                         rtp_session->skip_timer = 0;
                                                         switch_cond_next();
                                                 } else {
                                                         switch_core_timer_next(&rtp_session->timer);
                                                 }
                                                 slept++;
                                         }
 
                                 }
 
                                 rtp_session->sync_packets = 0;
                         }
                 }
 
                 rtp_session->stats.read_count++;
 
         recvfrom:
 
                 if (!read_pretriggered) {
                         bytes = 0;
                 }
                 read_loops++;
                 //poll_loop = 0;
 
                 if (!switch_rtp_ready(rtp_session)) {
                         break;
                 }
 
                 if (!rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] && rtp_session->read_pollfd) {
                         int pt = poll_sec * 1000000;
 
                         do_2833(rtp_session);
 
                         if (rtp_session->dtmf_data.out_digit_dur > 0 || rtp_session->dtmf_data.in_digit_sanity || rtp_session->sending_dtmf ||
                                 switch_queue_size(rtp_session->dtmf_data.dtmf_queue) || switch_queue_size(rtp_session->dtmf_data.dtmf_inqueue)) {
                                 pt = 20000;
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && !rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA]) {
                                 pt = 100000;
                         }
 
                         if (rtp_session->vb && !rtp_session->pause_jb) {
                                 if (switch_jb_poll(rtp_session->vb)) {
                                         pt = 1000;
                                 }
                         }
 
                         if ((io_flags & SWITCH_IO_FLAG_NOBLOCK)) {
                                 pt = 0;
                         }
 
                         poll_status = switch_poll(rtp_session->read_pollfd, 1, &fdr, pt);
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && poll_status != SWITCH_STATUS_SUCCESS && rtp_session->media_timeout && rtp_session->last_media) {
                                 check_timeout(rtp_session);
                         }
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->dtmf_data.out_digit_dur > 0) {
                                 return_cng_frame();
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && rtp_session->flags[SWITCH_RTP_FLAG_BREAK]) {
                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_BREAK);
                                 bytes = 0;
                                 reset_jitter_seq(rtp_session);
                                 return_cng_frame();
                         }
 
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         got_jb = (rtp_session->vb && !rtp_session->pause_jb && switch_jb_poll(rtp_session->vb));
                 } else {
                         got_jb = SWITCH_TRUE;
                 }
 
                 if (poll_status == SWITCH_STATUS_SUCCESS || got_jb) {
 
                         got_rtp_poll = 1;
 
                         if (read_pretriggered) {
                                 read_pretriggered = 0;
                         } else {
                                 
                                 
                                 status = read_rtp_packet(rtp_session, &bytes, flags, pmapP, poll_status, got_jb);
 
                                 if (status == SWITCH_STATUS_GENERR) {
                                         ret = -1;
                                         goto end;
                                 }
 
                                 if (rtp_session->max_missed_packets && read_loops == 1 && !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] &&
                                         !rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
                                         if (bytes && status == SWITCH_STATUS_SUCCESS) {
                                                 rtp_session->missed_count = 0;
                                         } else {
                                                 if (rtp_session->media_timeout && rtp_session->last_media) {
                                                         check_timeout(rtp_session);
                                                 } else {
                                                         if (++rtp_session->missed_count >= rtp_session->max_missed_packets) {
                                                                 ret = -2;
                                                                 goto end;
                                                         }
                                                 }
                                         }
                                 }
 
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                                         //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_CRIT, "Read bytes (%i) %ld\n", status, bytes);
 
                                         if (bytes == 0) {
                                                 if (check_rtcp_and_ice(rtp_session) == -1) {
                                                         ret = -1;
                                                         goto end;
                                                 }
                                                 // This is dumb
                                                 //switch_rtp_video_refresh(rtp_session);
                                                 goto  rtcp;
                                         }
                                 }
 
                                 if ((*flags & SFF_PROXY_PACKET)) {
                                         ret = (int) bytes;
                                         goto end;
                                 }
 
                                 if ((*flags & SFF_RTCP)) {
                                         *flags &= ~SFF_RTCP;
                                         has_rtcp = 1;
                                         goto rtcp;
                                 }
 
 
                         }
                         poll_loop = 0;
                 } else {
 
                         if (!switch_rtp_ready(rtp_session)) {
                                 ret = -1;
                                 goto end;
                         }
 
                         if (!SWITCH_STATUS_IS_BREAK(poll_status) && poll_status != SWITCH_STATUS_TIMEOUT) {
                                 char tmp[128] = "";
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Poll failed with error: %d [%s]\n",
                                                                   poll_status, switch_strerror_r(poll_status, tmp, sizeof(tmp)));
                                 ret = -1;
                                 goto end;
                         }
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] && !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                                 rtp_session->missed_count += (poll_sec * 1000) / (rtp_session->ms_per_packet ? rtp_session->ms_per_packet / 1000 : 20);
                                 bytes = 0;
 
                                 if (rtp_session->media_timeout && rtp_session->last_media) {
                                         check_timeout(rtp_session);
                                 } else if (rtp_session->max_missed_packets) {
                                         if (rtp_session->missed_count >= rtp_session->max_missed_packets) {
                                                 ret = -2;
                                                 goto end;
                                         }
                                 }
                         }
 
 
                         if (check_rtcp_and_ice(rtp_session) == -1) {
                                 ret = -1;
                                 goto end;
                         }
 
 
                         if ((!(io_flags & SWITCH_IO_FLAG_NOBLOCK)) &&
                                 (rtp_session->dtmf_data.out_digit_dur == 0) && !rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                                 return_cng_frame();
                         }
                 }
 
         rtcp:
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                         rtcp_poll_status = SWITCH_STATUS_FALSE;
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX] && has_rtcp) {
                                 if (rtp_session->rtcp_recv_msg_p->header.version == 2) { //rtcp muxed
                                         rtp_session->rtcp_from_addr = rtp_session->from_addr;
                                         rtcp_status = rtcp_poll_status = SWITCH_STATUS_SUCCESS;
                                         rtcp_bytes = bytes;
                                 }
 
                                 has_rtcp = 0;
 
                         } else if (rtp_session->rtcp_read_pollfd) {
                                 rtcp_poll_status = switch_poll(rtp_session->rtcp_read_pollfd, 1, &rtcp_fdr, 0);
                         }
 
                         if (rtcp_poll_status == SWITCH_STATUS_SUCCESS) {
 
                                 if (!rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                                         rtcp_status = read_rtcp_packet(rtp_session, &rtcp_bytes, flags);
                                 }
 
                                 if (rtcp_status == SWITCH_STATUS_SUCCESS) {
                                         switch_rtp_reset_media_timer(rtp_session);
                                         
                                         if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_PASSTHRU]) {
                                                 switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
                                                 const char *uuid = switch_channel_get_partner_uuid(channel);
 
                                                 if (uuid) {
                                                         switch_core_session_t *other_session;
                                                         switch_rtp_t *other_rtp_session = NULL;
 
                                                         if ((other_session = switch_core_session_locate(uuid))) {
                                                                 switch_channel_t *other_channel = switch_core_session_get_channel(other_session);
                                                                 if ((other_rtp_session = switch_channel_get_private(other_channel, "__rtcp_audio_rtp_session")) &&
                                                                         other_rtp_session->rtcp_sock_output &&
                                                                         switch_rtp_test_flag(other_rtp_session, SWITCH_RTP_FLAG_ENABLE_RTCP)) {
                                                                         other_rtp_session->rtcp_send_msg = rtp_session->rtcp_recv_msg;
 
 #ifdef ENABLE_SRTP
                                                                         switch_mutex_lock(other_rtp_session->ice_mutex);
                                                                         if (switch_rtp_test_flag(other_rtp_session, SWITCH_RTP_FLAG_SECURE_SEND)) {
                                                                                 int stat = 0;
                                                                                 int sbytes = (int) rtcp_bytes;
                                                                                 
                                                                                 if (!other_rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_MKI]) {
                                                                                         stat = srtp_protect_rtcp(other_rtp_session->send_ctx[rtp_session->srtp_idx_rtcp], &other_rtp_session->rtcp_send_msg.header, &sbytes);
                                                                                 } else {
                                                                                         stat = srtp_protect_rtcp_mki(other_rtp_session->send_ctx[other_rtp_session->srtp_idx_rtcp], &other_rtp_session->rtcp_send_msg.header, &sbytes, 1, SWITCH_CRYPTO_MKI_INDEX);
                                                                                 }
 
                                                                                 if (stat) {
                                                                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error: SRTP RTCP protection failed with code %d\n", stat);
                                                                                 }
                                                                                 rtcp_bytes = sbytes;
                                                                         }
                                                                         switch_mutex_unlock(other_rtp_session->ice_mutex);
 #endif
 
                                                                         if (switch_socket_sendto(other_rtp_session->rtcp_sock_output, other_rtp_session->rtcp_remote_addr, 0,
                                                                                                                          (const char*)&other_rtp_session->rtcp_send_msg, &rtcp_bytes ) != SWITCH_STATUS_SUCCESS) {
                                                                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG,"RTCP packet not written\n");
                                                                         }
 
 
                                                                 }
                                                                 switch_core_session_rwunlock(other_session);
                                                         }
                                                 }
 
                                         }
 
                                         if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                                                 process_rtcp_packet(rtp_session, &rtcp_bytes);
                                                 ret = 1;
 
                                                 continue;
                                         }
                                 }
                         }
                 }
 
                 if ((!(io_flags & SWITCH_IO_FLAG_NOBLOCK)) &&
                         (rtp_session->dtmf_data.out_digit_dur == 0) && !got_rtp_poll) {
                         return_cng_frame();
                 }
 
                 if (!bytes && (io_flags & SWITCH_IO_FLAG_NOBLOCK)) {
                         rtp_session->missed_count = 0;
                         ret = 0;
                         goto end;
                 }
 
                 check = !bytes;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_FLUSH]) {
                         bytes = do_flush(rtp_session, SWITCH_FALSE, bytes);
                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_FLUSH);
                 }
 
                 if ((!bytes && rtp_session->flags[SWITCH_RTP_FLAG_BREAK]) || (bytes && bytes == 4 && *((int *) &rtp_session->recv_msg) == UINT_MAX)) {
                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_BREAK);
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_NOBLOCK] || !rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] ||
                                 rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] || rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] ||
                                 (bytes && bytes < 5) || (!bytes && poll_loop)) {
                                 bytes = 0;
                                 reset_jitter_seq(rtp_session);
                                 return_cng_frame();
                         }
                 }
 
                 if (bytes && bytes < 5) {
                         continue;
                 }
 
                 if (!bytes && poll_loop) {
                         goto recvfrom;
                 }
 
                 if (bytes && rtp_session->last_rtp_hdr.m && rtp_session->last_rtp_hdr.pt != rtp_session->recv_te &&
                         !rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] &&
                         !rtp_session->flags[SWITCH_RTP_FLAG_TEXT] &&
                         !(rtp_session->rtp_bugs & RTP_BUG_IGNORE_MARK_BIT)) {
                         rtp_flush_read_buffer(rtp_session, SWITCH_RTP_FLUSH_ONCE);
                 }
 
                 if (rtp_session->last_rtp_hdr.pt == rtp_session->cng_pt || rtp_session->last_rtp_hdr.pt == 13) {
                         *flags |= SFF_NOT_AUDIO;
                 } else {
                         *flags &= ~SFF_NOT_AUDIO; /* If this flag was already set, make sure to remove it when we get real audio */
                 }
 
                 /* ignore packets not meant for us unless the auto-adjust window is open (ice mode has its own alternatives to this) */
                 /* ------------------- BUNDLE audio skip pt and addr check begin ------------------- */
                 if (!switch_channel_test_flag(channel, CF_AUDIO_VIDEO_BUNDLE) || (switch_channel_test_flag(channel, CF_AUDIO_VIDEO_BUNDLE) && rtp_session->flags[SWITCH_RTP_FLAG_VIDEO])) {
                 if (!using_ice(rtp_session) && bytes) {
                         if (rtp_session->flags[SWITCH_RTP_FLAG_AUTOADJ]) {
                                 if (rtp_session->last_rtp_hdr.pt == rtp_session->cng_pt || rtp_session->last_rtp_hdr.pt == 13) {
                                         goto recvfrom;
 
                                 }
                         } else if (!(rtp_session->rtp_bugs & RTP_BUG_ACCEPT_ANY_PACKETS) && !switch_cmp_addr(rtp_session->rtp_from_addr, rtp_session->remote_addr, SWITCH_FALSE)) {
                                 goto recvfrom;
                         }
                 }
 
                 if (bytes && rtp_session->flags[SWITCH_RTP_FLAG_AUTOADJ] && switch_sockaddr_get_port(rtp_session->rtp_from_addr)) {
                         if (!switch_cmp_addr(rtp_session->rtp_from_addr, rtp_session->remote_addr, SWITCH_FALSE)) {
                                 if (++rtp_session->autoadj_tally >= rtp_session->autoadj_threshold) {
                                         const char *err;
                                         uint32_t old = rtp_session->remote_port;
                                         const char *tx_host;
                                         const char *old_host;
                                         char bufa[50], bufb[50];
                                         char adj_port[6];
 
                                         tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtp_from_addr);
                                         old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO,
                                                                           "Auto Changing %s port from %s:%u to %s:%u\n", rtp_type(rtp_session), old_host, old, tx_host,
                                                                           switch_sockaddr_get_port(rtp_session->rtp_from_addr));
 
                                         if (channel) {
                                                 char varname[80] = "";
 
                                                 switch_snprintf(varname, sizeof(varname), "remote_%s_ip_reported", rtp_type(rtp_session));
                                                 switch_channel_set_variable(channel, varname, switch_channel_get_variable(channel, "remote_media_ip"));
 
                                                 switch_snprintf(varname, sizeof(varname), "remote_%s_ip", rtp_type(rtp_session));
                                                 switch_channel_set_variable(channel, varname, tx_host);
 
                                                 switch_snprintf(varname, sizeof(varname), "remote_%s_port_reported", rtp_type(rtp_session));
                                                 switch_snprintf(adj_port, sizeof(adj_port), "%u", switch_sockaddr_get_port(rtp_session->rtp_from_addr));
                                                 switch_channel_set_variable(channel, varname, switch_channel_get_variable(channel, "remote_media_port"));
 
                                                 switch_snprintf(varname, sizeof(varname), "remote_%s_port", rtp_type(rtp_session));
                                                 switch_channel_set_variable(channel, varname, adj_port);
 
                                                 switch_snprintf(varname, sizeof(varname), "rtp_auto_adjust_%s", rtp_type(rtp_session));
                                                 switch_channel_set_variable(channel, varname, "true");
                                         }
                                         rtp_session->auto_adj_used = 1;
                                         switch_rtp_set_remote_address(rtp_session, tx_host, switch_sockaddr_get_port(rtp_session->rtp_from_addr), 0, SWITCH_FALSE, &err);
                                         if ((rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST)) {
                                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                                 switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                         } else {
                                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                         }
                                         if (rtp_session->ice.ice_user) {
                                                 rtp_session->ice.addr = rtp_session->remote_addr;
                                         }
                                 }
                         } else {
                                 if ((rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST)) {
                                         switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                         switch_rtp_set_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_AUTOADJ);
                                 } else {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG, "Correct %s ip/port confirmed.\n", rtp_type(rtp_session));
                                         switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                                 }
                                 rtp_session->auto_adj_used = 0;
                         }
                 }
 
                 if (bytes && !(rtp_session->rtp_bugs & RTP_BUG_ALWAYS_AUTO_ADJUST) && rtp_session->autoadj_window) {
                         if (--rtp_session->autoadj_window == 0) {
                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
                         }
                 }
                 } /* ------------------- BUNDLE audio skip pt and addr check end ------------------- */
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_TEXT]) {
                         if (!bytes) {
                                 if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                                         switch_core_timer_next(&rtp_session->timer);
                                 }
                                 return_cng_frame();
                         } else {
                                 *payload_type = rtp_session->last_rtp_hdr.pt;
                                 ret = (int) bytes;
                                 goto end;
                         }
                 }
 
                 if (bytes && (rtp_session->flags[SWITCH_RTP_FLAG_PROXY_MEDIA] || rtp_session->flags[SWITCH_RTP_FLAG_UDPTL])) {
                         /* Fast PASS! */
                         *flags |= SFF_PROXY_PACKET;
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_UDPTL]) {
 #if 0
                                 if (rtp_session->has_rtp && check_recv_payload(rtp_session)) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING,
                                                                           "Ignoring udptl packet of size of %ld bytes that looks strikingly like a RTP packet.\n", (long)bytes);
                                         bytes = 0;
                                         goto do_continue;
                                 }
 #endif
                                 *flags |= SFF_UDPTL_PACKET;
                         }
 
                         ret = (int) bytes;
                         goto end;
                 }
 
                 if (bytes) {
                         rtp_session->missed_count = 0;
 
                         if (bytes < rtp_header_len) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_WARNING, "Ignoring invalid RTP packet size of %ld bytes.\n", (long)bytes);
                                 bytes = 0;
                                 goto do_continue;
                         }
 
                         if (rtp_session->last_rtp_hdr.pt && (rtp_session->last_rtp_hdr.pt == rtp_session->cng_pt || rtp_session->last_rtp_hdr.pt == 13)) {
                                 return_cng_frame();
                         }
                 }
 
                 if (check || bytes) {
                         do_2833(rtp_session);
                 }
 
                 if (bytes && rtp_session->recv_msg.header.version != 2) {
                         uint8_t *data = (uint8_t *) RTP_BODY(rtp_session);
 
                         //if (rtp_session->recv_msg.header.version == 0) {
                         //      if (rtp_session->ice.ice_user) {
                         //              handle_ice(rtp_session, &rtp_session->ice, (void *) &rtp_session->recv_msg, bytes);
                         //              goto recvfrom;
                         //      }
                         //}
 
                         if (rtp_session->invalid_handler) {
                                 rtp_session->invalid_handler(rtp_session, rtp_session->sock_input, (void *) &rtp_session->recv_msg, bytes, rtp_session->rtp_from_addr);
                         }
 
                         memset(data, 0, 2);
                         data[0] = 65;
 
                         rtp_session->last_rtp_hdr.pt = rtp_session->cng_pt != INVALID_PT ? rtp_session->cng_pt : SWITCH_RTP_CNG_PAYLOAD;
                         *flags |= SFF_CNG;
                         *payload_type = (switch_payload_t) rtp_session->last_rtp_hdr.pt;
                         ret = 2 + rtp_header_len;
                         goto end;
                 } else if (bytes) {
                         rtp_session->stats.inbound.period_packet_count++;
                 }
 
 
                 /* Handle incoming RFC2833 packets */
                 switch (handle_rfc2833(rtp_session, bytes, &do_cng)) {
                 case RESULT_GOTO_END:
                         goto end;
                 case RESULT_GOTO_RECVFROM:
                         goto recvfrom;
                 case RESULT_GOTO_TIMERCHECK:
                         goto timer_check;
                 case RESULT_CONTINUE:
                         status = SWITCH_STATUS_SUCCESS;
                         goto result_continue;
                 }
 
         result_continue:
         timer_check:
 
                 if (!rtp_session->media_timeout && rtp_session->flags[SWITCH_RTP_FLAG_MUTE]) {
                         do_cng++;
                 }
 
                 if (do_cng) {
                         uint8_t *data = (uint8_t *) RTP_BODY(rtp_session);
 
                         do_2833(rtp_session);
 
                         if (rtp_session->last_cng_ts == rtp_session->last_read_ts + rtp_session->samples_per_interval) {
                                 rtp_session->last_cng_ts = 0;
                         } else {
                                 rtp_session->last_cng_ts = rtp_session->last_read_ts + rtp_session->samples_per_interval;
                         }
 
                         memset(data, 0, 2);
                         data[0] = 65;
                         rtp_session->last_rtp_hdr.pt = rtp_session->cng_pt != INVALID_PT ? rtp_session->cng_pt : SWITCH_RTP_CNG_PAYLOAD;
                         *flags |= SFF_CNG;
                         *payload_type = (switch_payload_t) rtp_session->last_rtp_hdr.pt;
                         ret = 2 + rtp_header_len;
                         rtp_session->stats.inbound.skip_packet_count++;
                         goto end;
                 }
 
 
                 if (check || (bytes && !rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER])) {
                         if (!bytes && rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {  /* We're late! We're Late! */
                                 if (!rtp_session->flags[SWITCH_RTP_FLAG_NOBLOCK] && status == SWITCH_STATUS_BREAK) {
                                         switch_cond_next();
                                         continue;
                                 }
 
 
 
                                 if (!rtp_session->flags[SWITCH_RTP_FLAG_PAUSE] && !rtp_session->flags[SWITCH_RTP_FLAG_DTMF_ON] && !rtp_session->dtmf_data.in_digit_ts
                                         && rtp_session->cng_count > (rtp_session->one_second * 2) && rtp_session->jitter_lead > JITTER_LEAD_FRAMES) {
 
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, "%s %s timeout\n",
                                                                           rtp_session_name(rtp_session), rtp_type(rtp_session));
 
                                         if (rtp_session->media_timeout && rtp_session->last_media) {
                                                 check_timeout(rtp_session);
                                         }
 
                                         if (rtp_session->stats.inbound.error_log) {
                                                 rtp_session->stats.inbound.error_log->flaws++;
                                         }
                                         rtp_session->stats.inbound.flaws++;
                                         do_mos(rtp_session);
                                 }
 
                                 rtp_session->cng_count++;
                                 return_cng_frame();
                         }
                 }
 
                 rtp_session->cng_count = 0;
 
                 if (status == SWITCH_STATUS_BREAK || bytes == 0) {
                         if (!(io_flags & SWITCH_IO_FLAG_SINGLE_READ) && rtp_session->flags[SWITCH_RTP_FLAG_DATAWAIT]) {
                                 goto do_continue;
                         }
                         return_cng_frame();
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_GOOGLEHACK] && rtp_session->last_rtp_hdr.pt == 102) {
                         rtp_session->last_rtp_hdr.pt = 97;
                 }
 
                 break;
 
         do_continue:
 
                 if (!bytes && !rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] && !switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO)) {
 
                         if (sleep_mss) {
                                 switch_yield(sleep_mss);
                         }
                 }
 
         }
 
         if (switch_rtp_ready(rtp_session)) {
                 *payload_type = (switch_payload_t) rtp_session->last_rtp_hdr.pt;
 
                 if (*payload_type == SWITCH_RTP_CNG_PAYLOAD) {
                         *flags |= SFF_CNG;
                 }
 
                 ret = (int) bytes;
         } else {
                 ret = -1;
         }
 
  end:
 
         READ_DEC(rtp_session);
 
         return ret;
 }

◆ rtp_common_write()

static int rtp_common_write	(	switch_rtp_t *	rtp_session,
		rtp_msg_t *	send_msg,
		void *	data,
		uint32_t	datalen,
		switch_payload_t	payload,
		uint32_t	timestamp,
		switch_frame_flag_t *	flags
	)

static

Definition at line 8290 of file switch_rtp.c.

Referenced by switch_rtp_write_frame().

 {
         switch_size_t bytes;
         uint8_t send = 1;
         uint32_t this_ts = 0;
         int ret;
         switch_time_t now;
         uint8_t m = 0;
         switch_rtp_t *rtp_bundle_session = NULL;
         switch_rtp_t *tmp_session = NULL;
 
         if (!switch_rtp_ready(rtp_session)) {
                 return -1;
         }
 
         if (!switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO) &&
                 switch_channel_test_flag(switch_core_session_get_channel(rtp_session->session), CF_AUDIO_VIDEO_BUNDLE)) {
                 rtp_bundle_session = switch_core_media_get_rtp_session(rtp_session->session, SWITCH_MEDIA_TYPE_VIDEO);
         }
 
         if (!rtp_bundle_session && !rtp_write_ready(rtp_session, datalen, __LINE__)) {
                 return 0;
         }
 
         WRITE_INC(rtp_session);
         
         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                 //switch_core_timer_sync(&rtp_session->write_timer);
         }
 
         if (send_msg) {
                 bytes = datalen;
 
                 m = (uint8_t) send_msg->header.m;
                 rtp_session->ts = ntohl(send_msg->header.ts);
 
                 if (flags && *flags & SFF_RFC2833) {
                         if (rtp_session->te == INVALID_PT) {
                                 ret = 0;
                                 goto end;
                         }
                         send_msg->header.pt = rtp_session->te;
                 }
                 data = send_msg->body;
                 if (datalen > rtp_header_len) {
                         datalen -= rtp_header_len;
                 }
         } else {
                 if (*flags & SFF_RFC2833) {
                         if (rtp_session->te == INVALID_PT) {
                                 ret = 0;
                                 goto end;
                         }
                         payload = rtp_session->te;
                 }
 
                 send_msg = &rtp_session->send_msg;
                 send_msg->header.pt = payload;
 
                 m = get_next_write_ts(rtp_session, timestamp);
 
                 rtp_session->send_msg.header.ts = htonl(rtp_session->ts);
 
                 memcpy(send_msg->body, data, datalen);
                 bytes = datalen + rtp_header_len;
         }
 
         if (!switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO)) {
                 
                 if ((rtp_session->rtp_bugs & RTP_BUG_NEVER_SEND_MARKER)) {
                         m = 0;
                 } else {
                         int delta = rtp_session->ts - rtp_session->last_write_ts;
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_UDPTL] &&
                                 ((!rtp_session->flags[SWITCH_RTP_FLAG_RESET] && (abs(delta) > rtp_session->samples_per_interval * 10))
                                 || rtp_session->ts == rtp_session->samples_per_interval)) {
                                 m++;
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                                 //switch_core_timer_sync(&rtp_session->write_timer);
                         }
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] &&
                                 (rtp_session->write_timer.samplecount - rtp_session->last_write_samplecount) > rtp_session->samples_per_interval * 10) {
                                 m++;
                         }
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER] &&
                                 ((unsigned) ((switch_micro_time_now() - rtp_session->last_write_timestamp))) > (rtp_session->ms_per_packet * 10)) {
                                 m++;
                         }
 
                         if (rtp_session->cn && payload != rtp_session->cng_pt) {
                                 rtp_session->cn = 0;
                                 m++;
                         }
 
                         if (rtp_session->need_mark && !rtp_session->sending_dtmf) {
                                 m++;
                                 rtp_session->need_mark = 0;
                         }
                 }
 
                 if (m) {
                         rtp_session->flags[SWITCH_RTP_FLAG_RESET] = 1;
                         rtp_session->ts = 0;
                 }
 
                 /* If the marker was set, and the timestamp seems to have started over - set a new SSRC, to indicate this is a new stream */
                 if (m && !switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_SECURE_SEND) && (rtp_session->rtp_bugs & RTP_BUG_CHANGE_SSRC_ON_MARKER) &&
                         (rtp_session->flags[SWITCH_RTP_FLAG_RESET] || (rtp_session->ts <= rtp_session->last_write_ts && rtp_session->last_write_ts > 0))) {
                         switch_rtp_set_ssrc(rtp_session, (uint32_t) ((intptr_t) rtp_session + (switch_time_t) switch_epoch_time_now(NULL)));
                 }
 
                 if (!switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO) && !switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_UDPTL)) {
                         send_msg->header.m = (m && !(rtp_session->rtp_bugs & RTP_BUG_NEVER_SEND_MARKER)) ? 1 : 0;
                 }
         }
 
         if (switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO)) {
                 int external = (flags && *flags & SFF_EXTERNAL);
                 /* Normalize the timestamps to our own base by generating a made up starting point then adding the measured deltas to that base
                    so if the timestamps and ssrc of the source change, it will not break the other end's jitter bufffer / decoder etc *cough* CHROME *cough*
                  */
 
                 if (!rtp_session->ts_norm.ts) {
                         rtp_session->ts_norm.ts = (uint32_t) rand() % 1000000 + 1;
                 }
 
                 if (!rtp_session->ts_norm.last_ssrc || send_msg->header.ssrc != rtp_session->ts_norm.last_ssrc || rtp_session->ts_norm.last_external != external) {
                         switch_core_session_t *other_session;
                         
                         switch_core_session_request_video_refresh(rtp_session->session);
                         switch_core_media_gen_key_frame(rtp_session->session);
 
                         if (switch_core_session_get_partner(rtp_session->session, &other_session) == SWITCH_STATUS_SUCCESS) {
                                 switch_core_session_request_video_refresh(other_session);
                                 switch_core_media_gen_key_frame(other_session);
                                 switch_core_session_rwunlock(other_session);
                         }
 
                         if (rtp_session->ts_norm.last_ssrc) {
                                 rtp_session->ts_norm.delta_ttl = 0;
                                 rtp_session->ts_norm.ts++;
                         }
 
                         rtp_session->ts_norm.last_ssrc = send_msg->header.ssrc;
                         rtp_session->ts_norm.last_frame = ntohl(send_msg->header.ts);
                 }
 
                 rtp_session->ts_norm.last_external = external;
 
                 if (ntohl(send_msg->header.ts) != rtp_session->ts_norm.last_frame) {
                         int32_t delta = ntohl(send_msg->header.ts) - rtp_session->ts_norm.last_frame;
 
                         if (delta < 0 || delta > 90000) {
                                 switch_core_media_gen_key_frame(rtp_session->session);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG1, 
                                                                   "Timestamp shift detected last: %d this: %d delta: %d stick with prev delta: %d\n", 
                                                                   rtp_session->ts_norm.last_frame, ntohl(send_msg->header.ts), delta, rtp_session->ts_norm.delta);
                         } else {
                                 rtp_session->ts_norm.delta = delta;
                         }
 
                         rtp_session->ts_norm.ts += rtp_session->ts_norm.delta;
 
                 }
                 
                 rtp_session->ts_norm.last_frame = ntohl(send_msg->header.ts);
                 send_msg->header.ts = htonl(rtp_session->ts_norm.ts);
                 this_ts = rtp_session->ts_norm.ts;
         }
 
         send_msg->header.ssrc = htonl(rtp_session->ssrc);
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_GOOGLEHACK] && rtp_session->send_msg.header.pt == 97) {
                 rtp_session->last_rtp_hdr.pt = 102;
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_VAD] &&
                 rtp_session->last_rtp_hdr.pt == rtp_session->vad_data.read_codec->implementation->ianacode) {
 
                 int16_t decoded[SWITCH_RECOMMENDED_BUFFER_SIZE / sizeof(int16_t)] = { 0 };
                 uint32_t rate = 0;
                 uint32_t codec_flags = 0;
                 uint32_t len = sizeof(decoded);
                 time_t now = switch_epoch_time_now(NULL);
                 send = 0;
 
                 if (rtp_session->vad_data.scan_freq && rtp_session->vad_data.next_scan <= now) {
                         rtp_session->vad_data.bg_count = rtp_session->vad_data.bg_level = 0;
                         rtp_session->vad_data.next_scan = now + rtp_session->vad_data.scan_freq;
                 }
 
                 if (switch_core_codec_decode(&rtp_session->vad_data.vad_codec,
                                                                          rtp_session->vad_data.read_codec,
                                                                          data,
                                                                          datalen,
                                                                          rtp_session->vad_data.read_codec->implementation->actual_samples_per_second,
                                                                          decoded, &len, &rate, &codec_flags) == SWITCH_STATUS_SUCCESS) {
 
                         uint32_t energy = 0;
                         uint32_t x, y = 0, z = len / sizeof(int16_t);
                         uint32_t score = 0;
                         int divisor = 0;
                         if (z) {
 
                                 if (!(divisor = rtp_session->vad_data.read_codec->implementation->actual_samples_per_second / 8000)) {
                                         divisor = 1;
                                 }
 
                                 for (x = 0; x < z; x++) {
                                         energy += abs(decoded[y]);
                                         y += rtp_session->vad_data.read_codec->implementation->number_of_channels;
                                 }
 
                                 if (++rtp_session->vad_data.start_count < rtp_session->vad_data.start) {
                                         send = 1;
                                 } else {
                                         score = (energy / (z / divisor));
                                         if (score && (rtp_session->vad_data.bg_count < rtp_session->vad_data.bg_len)) {
                                                 rtp_session->vad_data.bg_level += score;
                                                 if (++rtp_session->vad_data.bg_count == rtp_session->vad_data.bg_len) {
                                                         rtp_session->vad_data.bg_level /= rtp_session->vad_data.bg_len;
                                                 }
                                                 send = 1;
                                         } else {
                                                 if (score > rtp_session->vad_data.bg_level && !switch_test_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_TALKING)) {
                                                         uint32_t diff = score - rtp_session->vad_data.bg_level;
 
                                                         if (rtp_session->vad_data.hangover_hits) {
                                                                 rtp_session->vad_data.hangover_hits--;
                                                         }
 
                                                         if (diff >= rtp_session->vad_data.diff_level || ++rtp_session->vad_data.hangunder_hits >= rtp_session->vad_data.hangunder) {
 
                                                                 switch_set_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_TALKING);
 
                                                                 rtp_session->vad_data.start_talking = switch_micro_time_now();
 
                                                                 if (!(rtp_session->rtp_bugs & RTP_BUG_NEVER_SEND_MARKER)) {
                                                                         send_msg->header.m = 1;
                                                                 }
                                                                 rtp_session->vad_data.hangover_hits = rtp_session->vad_data.hangunder_hits = rtp_session->vad_data.cng_count = 0;
                                                                 if (switch_test_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_EVENTS_TALK)) {
 
                                                                         if ((rtp_session->vad_data.fire_events & VAD_FIRE_TALK)) {
                                                                                 switch_event_t *event;
                                                                                 if (switch_event_create(&event, SWITCH_EVENT_TALK) == SWITCH_STATUS_SUCCESS) {
                                                                                         switch_channel_event_set_data(switch_core_session_get_channel(rtp_session->vad_data.session), event);
                                                                                         switch_event_fire(&event);
                                                                                 }
                                                                         }
                                                                 }
                                                         }
                                                 } else {
                                                         if (rtp_session->vad_data.hangunder_hits) {
                                                                 rtp_session->vad_data.hangunder_hits--;
                                                         }
                                                         if (switch_test_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_TALKING)) {
                                                                 if (++rtp_session->vad_data.hangover_hits >= rtp_session->vad_data.hangover) {
                                                                         rtp_session->vad_data.stop_talking = switch_micro_time_now();
                                                                         rtp_session->vad_data.total_talk_time += (rtp_session->vad_data.stop_talking - rtp_session->vad_data.start_talking);
 
                                                                         switch_clear_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_TALKING);
 
                                                                         rtp_session->vad_data.hangover_hits = rtp_session->vad_data.hangunder_hits = rtp_session->vad_data.cng_count = 0;
                                                                         if (switch_test_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_EVENTS_NOTALK)) {
 
                                                                                 if ((rtp_session->vad_data.fire_events & VAD_FIRE_NOT_TALK)) {
                                                                                         switch_event_t *event;
                                                                                         if (switch_event_create(&event, SWITCH_EVENT_NOTALK) == SWITCH_STATUS_SUCCESS) {
                                                                                                 switch_channel_event_set_data(switch_core_session_get_channel(rtp_session->vad_data.session), event);
                                                                                                 switch_event_fire(&event);
                                                                                         }
                                                                                 }
                                                                         }
                                                                 }
                                                         }
                                                 }
                                         }
                                 }
 
                                 if (switch_test_flag(&rtp_session->vad_data, SWITCH_VAD_FLAG_TALKING)) {
                                         send = 1;
                                 }
                         }
                 } else {
                         ret = -1;
                         goto end;
                 }
         }
 
         if (!switch_rtp_test_flag(rtp_session, SWITCH_RTP_FLAG_VIDEO)) {
                 uint32_t ts_delta;
 
                 this_ts = ntohl(send_msg->header.ts);
 
                 ts_delta = abs((int32_t)(this_ts - rtp_session->last_write_ts));
 
                 if (ts_delta > rtp_session->samples_per_second * 2) {
                         rtp_session->flags[SWITCH_RTP_FLAG_RESET] = 1;
                 }
 #ifdef DEBUG_TS_ROLLOVER
                 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "WRITE TS LAST:%u THIS:%u DELTA:%u\n", rtp_session->last_write_ts, this_ts, ts_delta);
 #endif
                 if ((!(flags && *flags & SFF_RFC2833) && ts_delta == 0) || !switch_rtp_ready(rtp_session) || rtp_session->sending_dtmf) {
                         send = 0;
                 }
         }
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_PAUSE]) {
                 send = 0;
         }
 
         if (send) {
                 int delta = 1;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO] && (*flags & SFF_EXTERNAL) && 
                         rtp_session->stats.outbound.packet_count && rtp_session->flags[SWITCH_RTP_FLAG_PASSTHRU]) {
                         int32_t x = rtp_session->last_write_seq;
                         int32_t y = ntohs(send_msg->header.seq);
 
                         if (!rtp_session->video_delta_mode) {
                                 rtp_session->video_delta_mode = 1;
                         } else {
                                 if (x > UINT16_MAX / 2 && y < UINT16_MAX / 2) {
                                         x -= (int32_t)UINT16_MAX+1;
                                 }
                         
                                 delta = y-x;
                         }
                         
                         rtp_session->last_write_seq = y;
                 }
 
                 if (!rtp_session->flags[SWITCH_RTP_FLAG_PASSTHRU]) {
                         rtp_session->video_delta_mode = 0;
                 }
 
                 rtp_session->seq += delta;
 
                 send_msg->header.seq = htons(rtp_session->seq);
                 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_BYTESWAP] && send_msg->header.pt == rtp_session->payload) {
                         switch_swap_linear((int16_t *)send_msg->body, (int) datalen);
                 }
 
                 if (rtp_bundle_session) {
                         tmp_session = rtp_session;
                         rtp_session = rtp_bundle_session;
                 }
 
 #ifdef ENABLE_SRTP
                 switch_mutex_lock(rtp_session->ice_mutex);
                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND]) {
                         int sbytes = (int) bytes;
                         srtp_err_status_t stat;
 
 
                         if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_RESET] || !rtp_session->send_ctx[rtp_session->srtp_idx_rtp]) {
 
                                 switch_rtp_clear_flag(rtp_session, SWITCH_RTP_FLAG_SECURE_SEND_RESET);
                                 srtp_dealloc(rtp_session->send_ctx[rtp_session->srtp_idx_rtp]);
                                 rtp_session->send_ctx[rtp_session->srtp_idx_rtp] = NULL;
                                 if (srtp_create(&rtp_session->send_ctx[rtp_session->srtp_idx_rtp],
                                                                                 &rtp_session->send_policy[rtp_session->srtp_idx_rtp]) || !rtp_session->send_ctx[rtp_session->srtp_idx_rtp]) {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR,
                                                                           "Error! RE-Activating %s Secure RTP SEND\n", rtp_type(rtp_session));
                                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND] = 0;
                                         ret = -1;
                                         switch_mutex_unlock(rtp_session->ice_mutex);
                                         goto end;
                                 } else {
                                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO,
                                                                           "RE-Activating %s Secure RTP SEND\n", rtp_type(rtp_session));
                                 }
                         }
 
                         if (!rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_MKI]) {
                                 stat = srtp_protect(rtp_session->send_ctx[rtp_session->srtp_idx_rtp], &send_msg->header, &sbytes);
                         } else {
                                 stat = srtp_protect_mki(rtp_session->send_ctx[rtp_session->srtp_idx_rtp], &send_msg->header, &sbytes, 1, SWITCH_CRYPTO_MKI_INDEX);
                         }
 
                         if (stat) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR,
                                                                   "Error: %s SRTP protection failed with code %d\n", rtp_type(rtp_session), stat);
                         }
 
                         bytes = sbytes;
                 }
                 switch_mutex_unlock(rtp_session->ice_mutex);
 #endif
 
                 now = switch_micro_time_now();
 #ifdef RTP_DEBUG_WRITE_DELTA
                 {
                         int delta = (int) (now - rtp_session->send_time) / 1000;
                         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "WRITE %d delta %d\n", (int) bytes, delta);
                 }
 #endif
                 rtp_session->send_time = now;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]) {
                         const char *tx_host;
                         const char *old_host;
                         const char *my_host;
 
                         char bufa[50], bufb[50], bufc[50];
 
 
                         tx_host = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtp_from_addr);
                         old_host = switch_get_addr(bufb, sizeof(bufb), rtp_session->remote_addr);
                         my_host = switch_get_addr(bufc, sizeof(bufc), rtp_session->local_addr);
 
                         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG_CLEAN(rtp_session->session), SWITCH_LOG_CONSOLE,
                                                           "W %s b=%4ld %s:%u %s:%u %s:%u pt=%d ts=%u seq=%u m=%d\n",
                                                           rtp_session->session ? switch_channel_get_name(switch_core_session_get_channel(rtp_session->session)) : "NoName",
                                                           (long) bytes,
                                                           my_host, switch_sockaddr_get_port(rtp_session->local_addr),
                                                           old_host, rtp_session->remote_port,
                                                           tx_host, switch_sockaddr_get_port(rtp_session->rtp_from_addr),
                                                           send_msg->header.pt, ntohl(send_msg->header.ts), ntohs(send_msg->header.seq), send_msg->header.m);
 
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_NACK]) {
                         switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
 
                         if (!rtp_session->vbw) {
                                 int nack_size = 100;
                                 const char *var;
                                 
                                 if ((var = switch_channel_get_variable(channel, "rtp_nack_buffer_size"))) {
                                         int tmp = atoi(var);
                                         
                                         if (tmp > 0 && tmp < 500) {
                                                 nack_size = tmp;
                                         }
                                 }
 
                                 switch_jb_create(&rtp_session->vbw, SJB_VIDEO, nack_size, nack_size, rtp_session->pool);
 
                                 if (rtp_session->vbw) {
                                         switch_jb_set_flag(rtp_session->vbw, SJB_QUEUE_ONLY);
                                         //switch_jb_debug_level(rtp_session->vbw, 10);
                                 }
                         }
                         switch_jb_put_packet(rtp_session->vbw, (switch_rtp_packet_t *)send_msg, bytes);
                 }
 
 #ifdef RTP_WRITE_PLOSS
                 {
                         int r = (rand() % 10000) + 1;
 
                         if (r <= 200) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ALERT,
                                                                   "Simulate dropping packet ......... ts: %u seq: %u\n", ntohl(send_msg->header.ts), ntohs(send_msg->header.seq));
                         } else {
                                 if (switch_socket_sendto(rtp_session->sock_output, rtp_session->remote_addr, 0, (void *) send_msg, &bytes) != SWITCH_STATUS_SUCCESS) {
                                         rtp_session->seq--;
                                         ret = -1;
                                         goto end;
                                 }
                         }
                 }
 #else
                 //if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                 //
                 //      rtp_session->flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]++;
                 //
                 //      //switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "SEND %u\n", ntohs(send_msg->header.seq));
                 //}
                 if (switch_socket_sendto(rtp_session->sock_output, rtp_session->remote_addr, 0, (void *) send_msg, &bytes) != SWITCH_STATUS_SUCCESS) {
                         rtp_session->seq -= delta;
 
                         ret = -1;
                         goto end;
                 }
 #endif
                 if (rtp_bundle_session) rtp_session = tmp_session;
 
                 rtp_session->last_write_ts = this_ts;
                 rtp_session->flags[SWITCH_RTP_FLAG_RESET] = 0;
 
                 if (rtp_session->queue_delay) {
                         rtp_session->delay_samples = rtp_session->queue_delay;
                         rtp_session->queue_delay = 0;
                 }
 
                 rtp_session->stats.outbound.raw_bytes += bytes;
                 rtp_session->stats.outbound.packet_count++;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_ENABLE_RTCP]) {
                         rtp_session->stats.rtcp.sent_pkt_count++;
                 }
 
                 if (send_msg->header.pt == rtp_session->cng_pt) {
                         rtp_session->stats.outbound.cng_packet_count++;
                 } else {
                         rtp_session->stats.outbound.media_packet_count++;
                         rtp_session->stats.outbound.media_bytes += bytes;
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                         //switch_core_timer_sync(&rtp_session->write_timer);
                         rtp_session->last_write_samplecount = rtp_session->write_timer.samplecount;
                 }
 
                 rtp_session->last_write_timestamp = switch_micro_time_now();
         }
 
         ret = (int) bytes;
 
  end:
 
         WRITE_DEC(rtp_session);
 
         return ret;
 }

◆ rtp_write_ready()

static int rtp_write_ready	(	switch_rtp_t *	rtp_session,
		uint32_t	bytes,
		int	line
	)

static

Definition at line 8270 of file switch_rtp.c.

References DS_READY, switch_rtp::dtls, switch_rtp::ice, switch_rtp_ice_t::ice_user, switch_rtp_ice_t::ready, switch_rtp_ice_t::rready, rtp_type, switch_rtp::session, switch_dtls_s::state, SWITCH_CHANNEL_SESSION_LOG, SWITCH_LOG_DEBUG3, and switch_log_printf().

Referenced by handle_rfc2833(), read_rtp_packet(), rtp_common_write(), switch_rtp_ack_bitrate(), switch_rtp_req_bitrate(), switch_rtp_video_loss(), switch_rtp_video_refresh(), switch_rtp_write_frame(), switch_rtp_write_manual(), and switch_rtp_write_raw().

 {
         if (!rtp_session) return 0;
 
         if (rtp_session->ice.ice_user && !(rtp_session->ice.rready || rtp_session->ice.ready)) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "Skip sending %s packet %ld bytes (ice not ready @ line %d!)\n",
                                                   rtp_type(rtp_session), (long)bytes, line);
                 return 0;
         }
 
         if (rtp_session->dtls && rtp_session->dtls->state != DS_READY) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG3, "Skip sending %s packet %ld bytes (dtls not ready @ line %d!)\n",
                                                   rtp_type(rtp_session), (long)bytes, line);
                 return 0;
         }
 
         return 1;
 }

◆ set_dtmf_delay()

static void set_dtmf_delay	(	switch_rtp_t *	rtp_session,
		uint32_t	ms,
		uint32_t	max_ms
	)

static

Definition at line 5452 of file switch_rtp.c.

References switch_rtp::flags, switch_rtp::last_write_ts, switch_rtp::max_next_write_samplecount, switch_rtp::next_write_samplecount, switch_rtp::queue_delay, switch_timer::samplecount, switch_rtp::samples_per_second, switch_rtp::sending_dtmf, switch_rtp::session, SWITCH_CHANNEL_SESSION_LOG, SWITCH_LOG_DEBUG, switch_log_printf(), SWITCH_RTP_FLAG_USE_TIMER, and switch_rtp::timer.

Referenced by do_2833().

 {
         int upsamp, max_upsamp;
 
 
         if (!max_ms) max_ms = ms;
 
         upsamp = ms * (rtp_session->samples_per_second / 1000);
         max_upsamp = max_ms * (rtp_session->samples_per_second / 1000);
         
         rtp_session->sending_dtmf = 0;
         rtp_session->queue_delay = upsamp;
 
         if (rtp_session->flags[SWITCH_RTP_FLAG_USE_TIMER]) {
                 rtp_session->max_next_write_samplecount = rtp_session->timer.samplecount + max_upsamp;
                 rtp_session->next_write_samplecount = rtp_session->timer.samplecount + upsamp;
                 rtp_session->last_write_ts += upsamp;
         }
 
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG, "Queue digit delay of %dms\n", ms);
 }

◆ switch_rtp_add_crypto_key()

switch_status_t switch_rtp_add_crypto_key	(	switch_rtp_t *	rtp_session,
		switch_rtp_crypto_direction_t	direction,
		uint32_t	index,
		switch_secure_settings_t *	ssec
	)

Definition at line 4059 of file switch_rtp.c.

References AEAD_AES_128_GCM, AEAD_AES_128_GCM_8, AEAD_AES_256_GCM, AEAD_AES_256_GCM_8, AES_CM_128_HMAC_SHA1_32, AES_CM_128_HMAC_SHA1_80, AES_CM_128_NULL_AUTH, AES_CM_192_HMAC_SHA1_32, AES_CM_192_HMAC_SHA1_80, AES_CM_256_HMAC_SHA1_32, AES_CM_256_HMAC_SHA1_80, switch_rtp::crypto_keys, secure_settings_s::crypto_type, switch_rtp::dtls, switch_rtp::flags, switch_rtp_crypto_key::index, index, switch_rtp_crypto_key::keysalt, secure_settings_s::local_key_material_n, secure_settings_s::local_key_material_next, secure_settings_s::local_raw_key, memset(), switch_crypto_key_material_s::mki_id, switch_crypto_key_material_s::mki_size, switch_rtp_crypto_key::next, switch_crypto_key_material_s::next, switch_rtp::pool, switch_crypto_key_material_s::raw_key, switch_rtp::recv_ctx, switch_rtp::recv_policy, secure_settings_s::remote_key_material_n, secure_settings_s::remote_key_material_next, secure_settings_s::remote_raw_key, rtp_type, switch_rtp::send_ctx, switch_rtp::send_policy, switch_rtp::session, switch_rtp::srtp_idx_rtcp, switch_b64_encode(), SWITCH_CALL_DIRECTION_OUTBOUND, switch_channel_direction(), switch_channel_get_uuid(), switch_channel_get_variable, SWITCH_CHANNEL_SESSION_LOG, switch_channel_set_variable, switch_core_alloc, switch_core_get_variable(), switch_core_media_crypto_keysalt_len(), switch_core_session_get_channel(), switch_event_add_header(), switch_event_add_header_string(), SWITCH_EVENT_CALL_SECURE, switch_event_create, switch_event_fire, SWITCH_LOG_CRIT, SWITCH_LOG_ERROR, SWITCH_LOG_INFO, switch_log_printf(), SWITCH_RTP_CRYPTO_MAX, SWITCH_RTP_CRYPTO_RECV, SWITCH_RTP_CRYPTO_RECV_RTCP, SWITCH_RTP_CRYPTO_SEND, SWITCH_RTP_CRYPTO_SEND_RTCP, SWITCH_RTP_FLAG_SECURE_RECV, SWITCH_RTP_FLAG_SECURE_RECV_MKI, SWITCH_RTP_FLAG_SECURE_RECV_RESET, SWITCH_RTP_FLAG_SECURE_SEND, SWITCH_RTP_FLAG_SECURE_SEND_MKI, SWITCH_RTP_FLAG_SECURE_SEND_RESET, SWITCH_RTP_FLAG_VIDEO, SWITCH_RTP_MAX_CRYPTO_LEN, SWITCH_STACK_BOTTOM, SWITCH_STATUS_FALSE, SWITCH_STATUS_SUCCESS, switch_true(), and switch_rtp_crypto_key::type.

Referenced by dtls_state_setup(), switch_core_media_recover_session(), switch_core_session_apply_crypto(), and switch_core_session_check_incoming_crypto().

 {
 #ifndef ENABLE_SRTP
         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_CRIT, "SRTP NOT SUPPORTED IN THIS BUILD!\n");
         return SWITCH_STATUS_FALSE;
 #else
 
         switch_rtp_crypto_key_t *crypto_key;
         srtp_policy_t *policy;
         srtp_err_status_t stat;
         switch_status_t status = SWITCH_STATUS_SUCCESS;
 
         switch_channel_t *channel = switch_core_session_get_channel(rtp_session->session);
         switch_event_t *fsevent = NULL;
         int idx = 0;
         const char *var;
         unsigned char b64_key[512] = "";
         
         unsigned char   *keysalt = NULL;
         switch_size_t   keysalt_len = 0;
         
         switch_crypto_key_material_t    *key_material = NULL;
         unsigned long                                   *key_material_n = NULL;
         srtp_master_key_t               **mkis = NULL;
         srtp_master_key_t               *mki = NULL;
         int mki_idx = 0;
 
         keysalt_len = switch_core_media_crypto_keysalt_len(ssec->crypto_type);
 
         if (direction >= SWITCH_RTP_CRYPTO_MAX || keysalt_len > SWITCH_RTP_MAX_CRYPTO_LEN) {
                 return SWITCH_STATUS_FALSE;
         }
 
         if (direction == SWITCH_RTP_CRYPTO_RECV_RTCP) {
                 direction = SWITCH_RTP_CRYPTO_RECV;
                 rtp_session->srtp_idx_rtcp = idx = 1;
         } else if (direction == SWITCH_RTP_CRYPTO_SEND_RTCP) {
                 direction = SWITCH_RTP_CRYPTO_SEND;
                 rtp_session->srtp_idx_rtcp = idx = 1;
         }
 
         if (direction == SWITCH_RTP_CRYPTO_RECV) {
                 policy = &rtp_session->recv_policy[idx];
                 keysalt = ssec->remote_raw_key;
                 key_material = ssec->remote_key_material_next;
                 key_material_n = &ssec->remote_key_material_n;
         } else {
                 policy = &rtp_session->send_policy[idx];
                 keysalt = ssec->local_raw_key;
                 key_material = ssec->local_key_material_next;
                 key_material_n = &ssec->local_key_material_n;
         }
 
         switch_b64_encode(keysalt, keysalt_len, b64_key, sizeof(b64_key));
 
         if (switch_true(switch_core_get_variable("rtp_retain_crypto_keys"))) {
                 switch(direction) {
                         case SWITCH_RTP_CRYPTO_SEND:
                                 switch_channel_set_variable(channel, "srtp_local_crypto_key", (const char *)b64_key);
                                 break;
                         case SWITCH_RTP_CRYPTO_RECV:
                                 switch_channel_set_variable(channel, "srtp_remote_crypto_key", (const char *)b64_key);
                                 break;
                         default:
                                 break;
                 }
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_VIDEO]) {
                         switch(direction) {
                         case SWITCH_RTP_CRYPTO_SEND:
                                 switch_channel_set_variable(channel, "srtp_local_video_crypto_key", (const char *)b64_key);
                                 break;
                         case SWITCH_RTP_CRYPTO_RECV:
                                 switch_channel_set_variable(channel, "srtp_remote_video_crypto_key", (const char *)b64_key);
                                 break;
                         default:
                                 break;
                         }
 
                 } else {
                         switch(direction) {
                         case SWITCH_RTP_CRYPTO_SEND:
                                 switch_channel_set_variable(channel, "srtp_local_audio_crypto_key", (const char *)b64_key);
                                 break;
                         case SWITCH_RTP_CRYPTO_RECV:
                                 switch_channel_set_variable(channel, "srtp_remote_audio_crypto_key", (const char *)b64_key);
                                 break;
                         default:
                                 break;
                         }
                 }
         }
 
         crypto_key = switch_core_alloc(rtp_session->pool, sizeof(*crypto_key));
 
         crypto_key->type = ssec->crypto_type;
         crypto_key->index = index;
         memcpy(crypto_key->keysalt, keysalt, keysalt_len);
         crypto_key->next = rtp_session->crypto_keys[direction];
         rtp_session->crypto_keys[direction] = crypto_key;
 
         memset(policy, 0, sizeof(*policy));
 
         /* many devices can't handle gaps in SRTP streams */
         if (!((var = switch_channel_get_variable(channel, "srtp_allow_idle_gaps"))
                   && switch_true(var))
                 && (!(var = switch_channel_get_variable(channel, "send_silence_when_idle"))
                         || !(atoi(var)))) {
                 switch_channel_set_variable(channel, "send_silence_when_idle", "-1");
         }
 
         switch (crypto_key->type) {
         case AES_CM_128_HMAC_SHA1_80:
                 srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_128_HMAC_SHA1_80");
                 }
                 break;
         case AES_CM_128_HMAC_SHA1_32:
                 srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(&policy->rtcp);
 
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_128_HMAC_SHA1_32");
                 }
                 break;
 
         case AEAD_AES_256_GCM_8:
                 srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy->rtp);
                 srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AEAD_AES_256_GCM_8");
                 }
                 break;
 
         case AEAD_AES_256_GCM:
                 srtp_crypto_policy_set_aes_gcm_256_16_auth(&policy->rtp);
                 srtp_crypto_policy_set_aes_gcm_256_16_auth(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AEAD_AES_256_GCM");
                 }
                 break;
 
         case AEAD_AES_128_GCM_8:
                 srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy->rtp);
                 srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AEAD_AES_128_GCM_8");
                 }
                 break;
 
         case AEAD_AES_128_GCM:
                 srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy->rtp);
                 srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AEAD_AES_128_GCM");
                 }
                 break;
 
         case AES_CM_256_HMAC_SHA1_80:
                 srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy->rtcp);
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_256_HMAC_SHA1_80");
                 }
                 break;
         case AES_CM_256_HMAC_SHA1_32:
                 srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(&policy->rtcp);
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_256_HMAC_SHA1_32");
                 }
                 break;
         case AES_CM_192_HMAC_SHA1_80:
                 srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80(&policy->rtcp);
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_192_HMAC_SHA1_80");
                 }
                 break;
         case AES_CM_192_HMAC_SHA1_32:
                 srtp_crypto_policy_set_aes_cm_192_hmac_sha1_32(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_192_hmac_sha1_32(&policy->rtcp);
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_192_HMAC_SHA1_32");
                 }
                 break;
         case AES_CM_128_NULL_AUTH:
                 srtp_crypto_policy_set_aes_cm_128_null_auth(&policy->rtp);
                 srtp_crypto_policy_set_aes_cm_128_null_auth(&policy->rtcp);
 
                 if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                         switch_channel_set_variable(channel, "rtp_has_crypto", "AES_CM_128_NULL_AUTH");
                 }
                 break;
         default:
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Missing crypto type!\n");
                 break;
         }
 
         /* Setup the policy with MKI if they are used. Number of key materials must be positive to use MKI. */
         if (key_material && (*key_material_n > 0)) {
 
                 if (direction == SWITCH_RTP_CRYPTO_RECV) {
                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI] = 1;        /* tell the rest of the environment MKI is used */
                 } else {
                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_MKI] = 1;        /* tell the rest of the environment MKI is used */
                 }
 
                 /* key must be NULL for libsrtp to work correctly with MKI. */
                 policy->key = NULL;
 
                 /* Allocate array for MKIs. */
                 mkis = switch_core_alloc(rtp_session->pool, *key_material_n * sizeof(srtp_master_key_t*));
                 if (!mkis) {
                         return SWITCH_STATUS_FALSE;
                 }
 
                 /* Build array of MKIs. */
                 mki_idx = 0;
 
                 while (key_material && (mki_idx < *key_material_n)) {
 
                         if (key_material->mki_size < 1) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "MKI bad key size at MKI %d\n", mki_idx);
                                 return SWITCH_STATUS_FALSE;
                         }
 
                         mki = switch_core_alloc(rtp_session->pool, sizeof(srtp_master_key_t));
                         if (!mki) {
                                 return SWITCH_STATUS_FALSE;
                         }
 
                         /* Setup MKI. */
                         mki->mki_id = switch_core_alloc(rtp_session->pool, sizeof(key_material->mki_size));
                         if (!mki->mki_id) {
                                 return SWITCH_STATUS_FALSE;
                         }
 
                         mki->key = switch_core_alloc(rtp_session->pool, keysalt_len);
                         if (!mki->key) {
                                 return SWITCH_STATUS_FALSE;
                         }
 
                         memcpy(mki->mki_id, &key_material->mki_id, key_material->mki_size);
                         mki->mki_size = key_material->mki_size;
                         memcpy(mki->key, key_material->raw_key, keysalt_len);
 
                         mkis[mki_idx] = mki;
 
                         key_material = key_material->next;
                         ++mki_idx;
                 }
 
                 /* And pass the array of MKIs to libsrtp. */
                 policy->keys = mkis;
                 policy->num_master_keys = mki_idx;
 
         } else {
                 policy->key = (uint8_t *) crypto_key->keysalt;
         }
 
         policy->next = NULL;
 
         policy->window_size = 1024;
         policy->allow_repeat_tx = 1;
 
         //policy->rtp.sec_serv = sec_serv_conf_and_auth;
         //policy->rtcp.sec_serv = sec_serv_conf_and_auth;
 
         switch (direction) {
         case SWITCH_RTP_CRYPTO_RECV:
                 policy->ssrc.type = ssrc_any_inbound;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] && idx == 0 && rtp_session->recv_ctx[idx]) {
                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_RESET] = 1;
                 } else {
                         if ((stat = srtp_create(&rtp_session->recv_ctx[idx], policy)) || !rtp_session->recv_ctx[idx]) {
                                 status = SWITCH_STATUS_FALSE;
                         }
 
                         if (status == SWITCH_STATUS_SUCCESS) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "Activating %s Secure %s RECV%s\n",
                                                                   rtp_type(rtp_session), idx ? "RTCP" : "RTP", rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV_MKI] ? " (with MKI)" : "");
                                 rtp_session->flags[SWITCH_RTP_FLAG_SECURE_RECV] = 1;
                         } else {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error allocating srtp [%d]\n", stat);
                                 return status;
                         }
                 }
                 break;
         case SWITCH_RTP_CRYPTO_SEND:
                 policy->ssrc.type = ssrc_any_outbound;
                 //policy->ssrc.type = ssrc_specific;
                 //policy->ssrc.value = rtp_session->ssrc;
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND] && idx == 0 && rtp_session->send_ctx[idx]) {
                         rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_RESET] = 1;
                 } else {
                         if ((stat = srtp_create(&rtp_session->send_ctx[idx], policy)) || !rtp_session->send_ctx[idx]) {
                                 status = SWITCH_STATUS_FALSE;
                         }
 
                         if (status == SWITCH_STATUS_SUCCESS) {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_INFO, "Activating %s Secure %s SEND%s\n",
                                                                   rtp_type(rtp_session), idx ? "RTCP" : "RTP", rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND_MKI] ? " (with MKI)" : "");
                                 rtp_session->flags[SWITCH_RTP_FLAG_SECURE_SEND] = 1;
                         } else {
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_ERROR, "Error allocating SRTP [%d]\n", stat);
                                 return status;
                         }
                 }
 
                 break;
         default:
                 abort();
                 break;
         }
 
         if (switch_event_create(&fsevent, SWITCH_EVENT_CALL_SECURE) == SWITCH_STATUS_SUCCESS) {
                 if (rtp_session->dtls) {
                         switch_event_add_header(fsevent, SWITCH_STACK_BOTTOM, "secure_type", "srtp:dtls:AES_CM_128_HMAC_SHA1_80");
                         switch_channel_set_variable(channel, "rtp_has_crypto", "srtp:dtls:AES_CM_128_HMAC_SHA1_80");
                 } else {
                         switch_event_add_header(fsevent, SWITCH_STACK_BOTTOM, "secure_type", "srtp:sdes:%s", switch_channel_get_variable(channel, "rtp_has_crypto"));
                 }
                 switch_event_add_header_string(fsevent, SWITCH_STACK_BOTTOM, "caller-unique-id", switch_channel_get_uuid(channel));
                 switch_event_fire(&fsevent);
         }
 
 
         return SWITCH_STATUS_SUCCESS;
 #endif
 }

◆ switch_rtp_change_ice_dest()

static void switch_rtp_change_ice_dest	(	switch_rtp_t *	rtp_session,
		switch_rtp_ice_t *	ice,
		const char *	host,
		switch_port_t	port
	)

static

Definition at line 543 of file switch_rtp.c.

References switch_rtp_ice_t::addr, ice_s::cand_idx, ice_s::cands, ice_s::chosen, icand_s::con_addr, icand_s::con_port, switch_rtp::flags, switch_rtp_ice_t::ice_params, switch_rtp_ice_t::missed_count, switch_rtp::pool, switch_rtp_ice_t::proto, switch_rtp::remote_addr, switch_rtp::rtcp_ice, switch_rtp::rtcp_remote_addr, switch_rtp::session, SWITCH_CHANNEL_SESSION_LOG, switch_core_strdup, SWITCH_FALSE, SWITCH_LOG_DEBUG5, switch_log_printf(), SWITCH_RTP_FLAG_RTCP_MUX, and switch_rtp_set_remote_address().

Referenced by handle_ice().

 {
         int is_rtcp = ice == &rtp_session->rtcp_ice;
         const char *err = "";
         int i;
         uint8_t ice_cand_found_idx = 0;
 
         for (i = 0; i < ice->ice_params->cand_idx[ice->proto]; i++) {
                 if (!strcmp(host, ice->ice_params->cands[i][ice->proto].con_addr) && port == ice->ice_params->cands[i][ice->proto].con_port) {
                         ice_cand_found_idx = i;
                 }
         }
 
         if (!ice_cand_found_idx) {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "ICE candidate [%s:%d] replaced with [%s:%d]\n",
                         ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr, ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port, host, port);
                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_addr = switch_core_strdup(rtp_session->pool, host);
                 ice->ice_params->cands[ice->ice_params->chosen[ice->proto]][ice->proto].con_port = port;
         } else {
                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG5, "ICE chosen candidate [%s:%d] set to idx [%d]\n", host, port, ice_cand_found_idx);
                 ice->ice_params->chosen[ice->proto] = ice_cand_found_idx;
         }
 
         ice->missed_count = 0;
 
         if (is_rtcp) {
                 ice->addr = rtp_session->rtcp_remote_addr;
         } else {
                 switch_rtp_set_remote_address(rtp_session, host, port, 0, SWITCH_FALSE, &err);
 
                 if (rtp_session->flags[SWITCH_RTP_FLAG_RTCP_MUX]) {
                         ice->addr = rtp_session->remote_addr;
                 }
         }
 
 }

◆ switch_rtp_dtls_destroy()

static void switch_rtp_dtls_destroy ( void )

static

Definition at line 3684 of file switch_rtp.c.

Referenced by switch_rtp_shutdown().

                                           {
 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
         if (dtls_bio_filter_methods) {
                 BIO_meth_free(dtls_bio_filter_methods);
                 dtls_bio_filter_methods = NULL;
         }
 #endif
 }

◆ switch_rtp_dtls_init()

static void switch_rtp_dtls_init ( void )

static

Definition at line 3674 of file switch_rtp.c.

References dtls_bio_filter_ctrl(), dtls_bio_filter_free(), dtls_bio_filter_new(), and dtls_bio_filter_write().

Referenced by switch_rtp_init().

                                        {
 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
         dtls_bio_filter_methods = BIO_meth_new(BIO_TYPE_FILTER | BIO_get_new_index(), "DTLS filter");
         BIO_meth_set_write(dtls_bio_filter_methods, dtls_bio_filter_write);
         BIO_meth_set_ctrl(dtls_bio_filter_methods, dtls_bio_filter_ctrl);
         BIO_meth_set_create(dtls_bio_filter_methods, dtls_bio_filter_new);
         BIO_meth_set_destroy(dtls_bio_filter_methods, dtls_bio_filter_free);
 #endif
 }

◆ switch_rtp_reset_vb()

void switch_rtp_reset_vb ( switch_rtp_t * rtp_session )

Definition at line 2988 of file switch_rtp.c.

References switch_jb_reset(), switch_rtp::vb, and switch_rtp::vbw.

Referenced by switch_rtp_reset().

 {
 
         if (rtp_session->vb) {
                 switch_jb_reset(rtp_session->vb);
         }
 
         if (rtp_session->vbw) {
                 switch_jb_reset(rtp_session->vbw);
         }
 }

◆ switch_send_rtcp_event()

static void switch_send_rtcp_event	(	switch_rtp_t *	rtp_session,
		struct switch_rtcp_sender_report *	sr,
		struct switch_rtcp_report_block *	rtcp_report_block
	)

static

Definition at line 2059 of file switch_rtp.c.

References switch_rtcp_report_block::dlsr, switch_rtcp_report_block::fraction, switch_rtcp_report_block::highest_sequence_number_received, switch_rtcp_report_block::jitter, switch_rtcp_report_block::lost, switch_rtcp_report_block::lsr, switch_rtcp_sender_info::ntp_lsw, switch_rtcp_sender_info::ntp_msw, switch_rtcp_sender_info::oc, switch_rtcp_sender_info::pc, switch_rtcp_numbers_t::peer_ssrc, switch_rtp_stats_t::rtcp, switch_rtcp_sender_report::sender_info, switch_rtp::session, switch_rtcp_numbers_t::ssrc, switch_rtp::stats, SWITCH_CHANNEL_SESSION_LOG, switch_core_session_get_uuid(), switch_event_add_header_string(), switch_event_create, switch_event_fire, SWITCH_EVENT_SEND_RTCP_MESSAGE, SWITCH_LOG_DEBUG10, switch_log_printf(), SWITCH_STACK_BOTTOM, SWITCH_STATUS_SUCCESS, switch_time_now(), SWITCH_TIME_T_FMT, switch_rtcp_sender_info::ts, and value.

Referenced by check_rtcp_and_ice().

 {
         if (sr && rtcp_report_block) {
                 switch_event_t *event;
 
                 if (switch_event_create(&event, SWITCH_EVENT_SEND_RTCP_MESSAGE) == SWITCH_STATUS_SUCCESS) {
                                 char value[30];
                                 char header[50];
                                 uint32_t tmpLost;
                                 char *uuid = switch_core_session_get_uuid(rtp_session->session);
                                 if (uuid) {
                                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Unique-ID", switch_core_session_get_uuid(rtp_session->session));
                                 }
 
                                 snprintf(value, sizeof(value), "%.8x", rtp_session->stats.rtcp.ssrc);
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "SSRC", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.ntp_msw));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "NTP-Most-Significant-Word", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.ntp_lsw));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "NTP-Least-Significant-Word", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.ts));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "RTP-Timestamp", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.pc));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Sender-Packet-Count", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.oc));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Octect-Packet-Count", value);
 
                                 snprintf(value, sizeof(value), "%u", ntohl(sr->sender_info.ts));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Last-RTP-Timestamp", value);
 
                                 snprintf(value, sizeof(value), "%" SWITCH_TIME_T_FMT, switch_time_now());
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Capture-Time", value);
 
                                 /* Add sources info */
                                 snprintf(header, sizeof(header), "Source-SSRC");
                                 snprintf(value, sizeof(value), "%.8x", rtp_session->stats.rtcp.peer_ssrc);
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-Fraction");
                                 snprintf(value, sizeof(value), "%u", (uint8_t)rtcp_report_block->fraction);
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-Lost");
 #if SWITCH_BYTE_ORDER == __BIG_ENDIAN
                                 tmpLost = rtcp_report_block->lost; /* signed 24bit will extended signess to int32_t automatically */
 #else
                                 tmpLost = ntohl(rtcp_report_block->lost)>>8;
                                 tmpLost = tmpLost | ((tmpLost & 0x00800000) ? 0xff000000 : 0x00000000); /* ...and signess compensation */
 #endif
                                 snprintf(value, sizeof(value), "%u", tmpLost);
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-Highest-Sequence-Number-Received");
                                 snprintf(value, sizeof(value), "%u", ntohl(rtcp_report_block->highest_sequence_number_received));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-Jitter");
                                 snprintf(value, sizeof(value), "%u", ntohl(rtcp_report_block->jitter));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-LSR");
                                 snprintf(value, sizeof(value), "%u", ntohl(rtcp_report_block->lsr));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
                                 snprintf(header, sizeof(header), "Source-DLSR");
                                 snprintf(value, sizeof(value), "%u", ntohl(rtcp_report_block->dlsr));
                                 switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header, value);
 
                                 switch_event_fire(&event);
                                 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session), SWITCH_LOG_DEBUG10, "Dispatched RTCP SEND event\n");
                 }
         }
 }

◆ using_ice()

static int using_ice ( switch_rtp_t * rtp_session )

static

Definition at line 2050 of file switch_rtp.c.

References switch_rtp::ice, switch_rtp_ice_t::ice_user, and switch_rtp::rtcp_ice.

Referenced by check_rtcp_and_ice(), and rtp_common_read().

 {
         if (rtp_session->ice.ice_user || rtp_session->rtcp_ice.ice_user) {
                 return 1;
         }
 
         return 0;
 }

Variable Documentation

◆ alloc_hash

switch_hash_t* alloc_hash = NULL

static

Definition at line 109 of file switch_rtp.c.

◆ dtls_bio_filter_methods

static BIO_METHOD dtls_bio_filter_methods

static

Initial value:

= {
        BIO_TYPE_FILTER,
        "DTLS filter",
        dtls_bio_filter_write,
        NULL,
        NULL,
        NULL,
        dtls_bio_filter_ctrl,
        dtls_bio_filter_new,
        dtls_bio_filter_free,
        NULL
}

Definition at line 3467 of file switch_rtp.c.

◆ dtls_state_names_t

const char* dtls_state_names_t[] = {"OFF", "HANDSHAKE", "SETUP", "READY", "FAIL", "INVALID"}

static

Definition at line 3199 of file switch_rtp.c.

◆ dtls_states

dtls_state_handler_t dtls_states[DS_INVALID] = {NULL, dtls_state_handshake, dtls_state_setup, dtls_state_ready, dtls_state_fail}

Definition at line 304 of file switch_rtp.c.

◆ END_PORT

switch_port_t END_PORT = RTP_END_PORT

static

Definition at line 93 of file switch_rtp.c.

Referenced by switch_rtp_request_port(), and switch_rtp_set_end_port().

◆ global_init

int global_init = 0

static

Definition at line 814 of file switch_rtp.c.

◆ INVALID_PT

const switch_payload_t INVALID_PT = 255

static

Definition at line 81 of file switch_rtp.c.

Referenced by check_rtcp_and_ice(), rtp_common_read(), rtp_common_write(), switch_rtp_create(), switch_rtp_write_frame(), and switch_rtp_write_manual().

◆ port_lock

switch_mutex_t* port_lock = NULL

static

Definition at line 94 of file switch_rtp.c.

Referenced by switch_rtp_init(), switch_rtp_release_port(), switch_rtp_request_port(), switch_rtp_set_end_port(), switch_rtp_set_start_port(), and switch_rtp_shutdown().

◆ START_PORT

switch_port_t START_PORT = RTP_START_PORT

static

Definition at line 92 of file switch_rtp.c.

Referenced by switch_rtp_request_port(), and switch_rtp_set_start_port().

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ ADJ_TOO_LONG

◆ cr_keylen

◆ cr_kslen

◆ cr_saltlen

◆ DEBUG_ESTIMATORS_

◆ dtls_set_state

◆ DTMF_SANITY

◆ EST_JITTER

◆ EST_LOSS

◆ EST_RTT

◆ JITTER_LEAD_FRAMES

◆ KALMAN_SYSTEM_MODELS

◆ MASTER_KEY_LEN

◆ MAX_DTLS_MTU

◆ MAX_NACK

◆ MAX_SRTP_ERRS

◆ MEDIA_TOO_LONG

◆ NTP_TIME_OFFSET

◆ READ_DEC

◆ READ_INC

◆ return_cng_frame

◆ RTP_BODY

◆ RTP_END_PORT

◆ rtp_header_len

◆ RTP_MAGIC_NUMBER

◆ rtp_session_name

◆ RTP_START_PORT

◆ RTP_STUN_FREQ

◆ rtp_type

◆ SDP_UFRAG_MAX_SIZE

◆ STUN_TOO_LONG

◆ STUN_USERNAME_MAX_SIZE

◆ WARN_SRTP_ERRS

◆ WRITE_DEC

◆ WRITE_INC

Typedef Documentation

◆ dtls_bio_filter

◆ dtls_state_handler_t

◆ packet_list_t

◆ rtp_hdr_t

◆ switch_dtls_t

◆ switch_rtcp_sdes_unit_t

◆ ts_normalize_t

Enumeration Type Documentation

◆ handle_rfc2833_result_t

◆ vad_talk_mask_t

Function Documentation

◆ BIO_dtls_filter()

◆ burstr_calculate()

◆ calc_bw_exp()

◆ calc_elapsed()

◆ calc_local_lsr_now()

◆ check_jitter()

◆ check_recv_payload()

◆ check_rtcp_and_ice()

◆ check_timeout()

◆ do_2833()

◆ do_dtls()

◆ do_flush()

◆ do_mos()

◆ dtls_bio_filter_ctrl()

◆ dtls_bio_filter_free()

◆ dtls_bio_filter_new()

◆ dtls_bio_filter_write()

◆ dtls_state_fail()

◆ dtls_state_handshake()

◆ dtls_state_names()

◆ dtls_state_ready()

◆ dtls_state_setup()

◆ enable_local_rtcp_socket()

◆ enable_remote_rtcp_socket()

◆ free_dtls()

◆ get_next_write_ts()