GST_END_TEST
GST_START_TEST (copy)
{
GstSDPMessage *message, *copy;
glong length = -1;
gchar *message_str, *copy_str;
const gchar *repeat1[] = { "789", "012", NULL };
const gchar *repeat2[] = { "987", "210", NULL };
gst_sdp_message_new (&message);
gst_sdp_message_parse_buffer ((guint8 *) sdp, length, message);
gst_sdp_message_add_time (message, "123", "456", repeat1);
gst_sdp_message_add_time (message, "321", "654", repeat2);
gst_sdp_message_copy (message, ©);
message_str = gst_sdp_message_as_text (message);
GST_DEBUG ("Original:\n%s", message_str);
gst_sdp_message_free (message);
copy_str = gst_sdp_message_as_text (copy);
gst_sdp_message_free (copy);
GST_DEBUG ("Copy:\n%s", copy_str);
fail_if (g_strcmp0 (copy_str, message_str) != 0);
g_free (copy_str);
g_free (message_str);
}
/**
* \brief creates SAP message: header + payload returned in a buffer
* \param channelTable_entry * entry the entry in the channelTable associated to the socket
* \param sap_msg_length a location to save the lenght of the SAP message
* \param gboolean deletion specify if we should build the SAP deletion message
* \return char* buffer that contains the SAP message (the UDP payload)
*/
static char* build_SAP_msg(struct channelTable_entry * entry, int *sap_msg_length, gboolean deletion){
GstSDPMessage *msg;
/* create a new SDP message */
if (gst_sdp_message_new(&msg)){
g_critical("Failed to create SDP message\n");
return FALSE;
}
/*
* build the SDP message
*/
create_SDP(msg, entry);
/* extract the randomly generated session_version integer */
const GstSDPOrigin *origin = gst_sdp_message_get_origin (msg);
int session_version = htonl(atoi(origin->sess_version));
/* Build the header */
char header[SAP_header_size];
build_SAP_header(header, session_version, deletion);
/* Build the *payload */
char *payload = g_strdup (gst_sdp_message_as_text(msg));
/* concat header and payload */
int sap_msg_size = SAP_header_size+strlen(payload);
char *sap_msg = (char*) malloc(sap_msg_size*sizeof(char));
memcpy(sap_msg, header, SAP_header_size);
memcpy(sap_msg+SAP_header_size, payload, strlen(payload));
*sap_msg_length = sap_msg_size; // save the length if the message into sap_msg_length
free(payload);
return sap_msg;
}
GstSDPMessage *
kms_sdp_message_context_pack (SdpMessageContext * ctx, GError ** error)
{
GstSDPMessage *msg;
gchar *sdp_str;
GSList *l;
gst_sdp_message_new (&msg);
/* Context's message only stores media session attributes */
sdp_str = gst_sdp_message_as_text (ctx->msg);
if (gst_sdp_message_parse_buffer ((const guint8 *) sdp_str, -1,
msg) != GST_SDP_OK) {
g_set_error_literal (error, KMS_SDP_AGENT_ERROR, SDP_AGENT_UNEXPECTED_ERROR,
"Can not create SDP message");
g_free (sdp_str);
return NULL;
}
g_free (sdp_str);
/* Add group attributes */
g_slist_foreach (ctx->groups, (GFunc) add_group_to_sdp_message, msg);
/* Append medias to the message */
for (l = ctx->medias; l != NULL; l = g_slist_next (l)) {
if (!add_media_to_sdp_message (l->data, msg, error)) {
gst_sdp_message_free (msg);
return NULL;
}
}
return msg;
}
static void
sdp_to_str (std::string &_return, const GstSDPMessage *sdp)
{
std::string sdpStr;
gchar *sdpGchar;
sdpGchar = gst_sdp_message_as_text (sdp);
_return.clear ();
_return.append (sdpGchar);
free (sdpGchar);
}
GST_END_TEST
GST_START_TEST (process_webrtc_offer)
{
GstSDPMessage *pattern_sdp;
GstElement *rtpendpoint = gst_element_factory_make ("rtpendpoint", NULL);
GstSDPMessage *offer = NULL, *answer = NULL;
gchar *aux = NULL;
static const gchar *offer_str = "v=0\r\n"
"o=- 1783800438437245920 2 IN IP4 127.0.0.1\r\n"
"s=-\r\n"
"t=0 0\r\n"
"a=group:BUNDLE audio video\r\n"
"a=msid-semantic: WMS MediaStream0\r\n"
"m=audio 37426 RTP/SAVPF 111 103 9 102 0 8 106 105 13 127 126\r\n"
"c=IN IP4 5.5.5.5\r\n"
"a=rtcp:37426 IN IP4 5.5.5.5\r\n"
"a=candidate:1840965416 1 udp 2113937151 192.168.0.100 37426 typ host generation 0\r\n"
"a=candidate:1840965416 2 udp 2113937151 192.168.0.100 37426 typ host generation 0\r\n"
"a=candidate:590945240 1 tcp 1509957375 192.168.0.100 46029 typ host generation 0\r\n"
"a=candidate:590945240 2 tcp 1509957375 192.168.0.100 46029 typ host generation 0\r\n"
"a=candidate:3975340444 1 udp 1677729535 5.5.5.5 37426 typ srflx raddr 192.168.0.100 rport 37426 generation 0\r\n"
"a=candidate:3975340444 2 udp 1677729535 5.5.5.5 37426 typ srflx raddr 192.168.0.100 rport 37426 generation 0\r\n"
"a=ice-ufrag:RkI7xTFiQgGZu1ww\r\n"
"a=ice-pwd:6ZTKNoP2vXWYLweywju9Bydv\r\n"
"a=ice-options:google-ice\r\n"
"a=mid:audio\r\n"
"a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n"
"a=sendrecv\r\n"
"a=rtcp-mux\r\n"
"a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:vpy+PnhF0bWmwYlAngWT1cc9qppYCvRlwT4aKrYh\r\n"
"a=rtpmap:111 opus/48000/1\r\n"
"a=fmtp:111 minptime=10\r\n"
"a=rtpmap:103 ISAC/16000\r\n"
"a=rtpmap:9 G722/16000\r\n"
"a=rtpmap:102 ILBC/8000\r\n"
"a=rtpmap:0 PCMU/8000\r\n"
"a=rtpmap:8 PCMA/8000\r\n"
"a=rtpmap:106 CN/32000\r\n"
"a=rtpmap:105 CN/16000\r\n"
"a=rtpmap:13 CN/8000\r\n"
"a=rtpmap:127 red/8000\r\n"
"a=rtpmap:126 telephone-event/8000\r\n"
"a=maxptime:60\r\n"
"a=ssrc:4210654932 cname:/9kskFtadoxn1x70\r\n"
"a=ssrc:4210654932 msid:MediaStream0 AudioTrack0\r\n"
"a=ssrc:4210654932 mslabel:MediaStream0\r\n"
"a=ssrc:4210654932 label:AudioTrack0\r\n"
"m=video 37426 RTP/SAVPF 100 116 117\r\n"
"c=IN IP4 5.5.5.5\r\n"
"a=rtcp:37426 IN IP4 5.5.5.5\r\n"
"a=candidate:1840965416 1 udp 2113937151 192.168.0.100 37426 typ host generation 0\r\n"
"a=candidate:1840965416 2 udp 2113937151 192.168.0.100 37426 typ host generation 0\r\n"
"a=candidate:590945240 1 tcp 1509957375 192.168.0.100 46029 typ host generation 0\r\n"
"a=candidate:590945240 2 tcp 1509957375 192.168.0.100 46029 typ host generation 0\r\n"
"a=candidate:3975340444 1 udp 1677729535 5.5.5.5 37426 typ srflx raddr 192.168.0.100 rport 37426 generation 0\r\n"
"a=candidate:3975340444 2 udp 1677729535 5.5.5.5 37426 typ srflx raddr 192.168.0.100 rport 37426 generation 0\r\n"
"a=ice-ufrag:RkI7xTFiQgGZu1ww\r\n"
"a=ice-pwd:6ZTKNoP2vXWYLweywju9Bydv\r\n"
"a=ice-options:google-ice\r\n"
"a=mid:video\r\n"
"a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\n"
"a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n"
"a=sendrecv\r\n"
"a=rtcp-mux\r\n"
"a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:vpy+PnhF0bWmwYlAngWT1cc9qppYCvRlwT4aKrYh\r\n"
"a=rtpmap:100 VP8/90000\r\n"
"a=rtcp-fb:100 ccm fir\r\n"
"a=rtcp-fb:100 nack\r\n"
"a=rtcp-fb:100 nack pli\r\n"
"a=rtcp-fb:100 goog-remb\r\n"
"a=rtpmap:116 red/90000\r\n"
"a=rtpmap:117 ulpfec/90000\r\n"
"a=ssrc:1686396354 cname:/9kskFtadoxn1x70\r\n"
"a=ssrc:1686396354 msid:MediaStream0 VideoTrack0\r\n"
"a=ssrc:1686396354 mslabel:MediaStream0\r\n"
"a=ssrc:1686396354 label:VideoTrack0\r\n";
fail_unless (gst_sdp_message_new (&pattern_sdp) == GST_SDP_OK);
fail_unless (gst_sdp_message_parse_buffer ((const guint8 *)
pattern_offer_sdp_str, -1, pattern_sdp) == GST_SDP_OK);
g_object_set (rtpendpoint, "pattern-sdp", pattern_sdp, NULL);
fail_unless (gst_sdp_message_free (pattern_sdp) == GST_SDP_OK);
g_object_get (rtpendpoint, "pattern-sdp", &pattern_sdp, NULL);
fail_unless (pattern_sdp != NULL);
fail_unless (gst_sdp_message_free (pattern_sdp) == GST_SDP_OK);
fail_unless (gst_sdp_message_new (&offer) == GST_SDP_OK);
fail_unless (gst_sdp_message_parse_buffer ((const guint8 *)
offer_str, -1, offer) == GST_SDP_OK);
GST_DEBUG ("Offer:\n%s", (aux = gst_sdp_message_as_text (offer)));
g_free (aux);
aux = NULL;
g_signal_emit_by_name (rtpendpoint, "process-offer", offer, &answer);
fail_unless (answer != NULL);
GST_DEBUG ("Answer:\n%s", (aux = gst_sdp_message_as_text (answer)));
g_free (aux);
aux = NULL;
gst_sdp_message_free (offer);
gst_sdp_message_free (answer);
g_object_unref (rtpendpoint);
}
GST_END_TEST
GST_START_TEST (negotiation_offerer)
{
GstSDPMessage *pattern_sdp;
GstElement *offerer = gst_element_factory_make ("rtpendpoint", NULL);
GstElement *answerer = gst_element_factory_make ("rtpendpoint", NULL);
GstSDPMessage *offer = NULL, *answer = NULL;
GstSDPMessage *local_offer = NULL, *local_answer = NULL, *remote_offer =
NULL, *remote_answer = NULL;
gchar *local_offer_str, *local_answer_str, *remote_offer_str,
*remote_answer_str;
gchar *aux = NULL;
fail_unless (gst_sdp_message_new (&pattern_sdp) == GST_SDP_OK);
fail_unless (gst_sdp_message_parse_buffer ((const guint8 *)
pattern_offer_sdp_str, -1, pattern_sdp) == GST_SDP_OK);
g_object_set (offerer, "pattern-sdp", pattern_sdp, NULL);
fail_unless (gst_sdp_message_free (pattern_sdp) == GST_SDP_OK);
g_object_get (offerer, "pattern-sdp", &pattern_sdp, NULL);
fail_unless (pattern_sdp != NULL);
fail_unless (gst_sdp_message_free (pattern_sdp) == GST_SDP_OK);
fail_unless (gst_sdp_message_new (&pattern_sdp) == GST_SDP_OK);
fail_unless (gst_sdp_message_parse_buffer ((const guint8 *)
pattern_answer_sdp_str, -1, pattern_sdp) == GST_SDP_OK);
g_object_set (answerer, "pattern-sdp", pattern_sdp, NULL);
fail_unless (gst_sdp_message_free (pattern_sdp) == GST_SDP_OK);
g_signal_emit_by_name (offerer, "generate-offer", &offer);
fail_unless (offer != NULL);
GST_DEBUG ("Offer:\n%s", (aux = gst_sdp_message_as_text (offer)));
g_free (aux);
aux = NULL;
g_signal_emit_by_name (answerer, "process-offer", offer, &answer);
fail_unless (answer != NULL);
GST_DEBUG ("Answer:\n%s", (aux = gst_sdp_message_as_text (answer)));
g_free (aux);
aux = NULL;
g_signal_emit_by_name (offerer, "process-answer", answer);
gst_sdp_message_free (offer);
gst_sdp_message_free (answer);
g_object_get (offerer, "local-offer-sdp", &local_offer, NULL);
g_object_get (offerer, "remote-answer-sdp", &remote_answer, NULL);
g_object_get (answerer, "remote-offer-sdp", &remote_offer, NULL);
g_object_get (answerer, "local-answer-sdp", &local_answer, NULL);
fail_unless (local_offer != NULL);
fail_unless (remote_answer != NULL);
fail_unless (remote_offer != NULL);
fail_unless (local_answer != NULL);
local_offer_str = gst_sdp_message_as_text (local_offer);
remote_answer_str = gst_sdp_message_as_text (remote_answer);
remote_offer_str = gst_sdp_message_as_text (remote_offer);
local_answer_str = gst_sdp_message_as_text (local_answer);
GST_DEBUG ("Local offer\n%s", local_offer_str);
GST_DEBUG ("Remote answer\n%s", remote_answer_str);
GST_DEBUG ("Remote offer\n%s", remote_offer_str);
GST_DEBUG ("Local answer\n%s", local_answer_str);
fail_unless (g_strcmp0 (local_offer_str, remote_offer_str) == 0);
fail_unless (g_strcmp0 (remote_answer_str, local_answer_str) == 0);
g_free (local_offer_str);
g_free (remote_answer_str);
g_free (local_answer_str);
g_free (remote_offer_str);
gst_sdp_message_free (local_offer);
gst_sdp_message_free (remote_answer);
gst_sdp_message_free (remote_offer);
gst_sdp_message_free (local_answer);
g_object_unref (offerer);
g_object_unref (answerer);
}
GST_END_TEST
GST_START_TEST (negotiation_offerer)
{
GArray *audio_codecs_array, *video_codecs_array;
gchar *audio_codecs[] = { "OPUS/48000/1", "AMR/8000/1", NULL };
gchar *video_codecs[] = { "H263-1998/90000", "VP8/90000", NULL };
GstElement *offerer = gst_element_factory_make ("rtpendpoint", NULL);
GstElement *answerer = gst_element_factory_make ("rtpendpoint", NULL);
GstSDPMessage *offer = NULL, *answer = NULL;
GstSDPMessage *offerer_local_sdp = NULL, *offerer_remote_sdp = NULL;
gchar *offerer_local_sdp_str, *offerer_remote_sdp_str;
GstSDPMessage *answerer_local_sdp = NULL, *answerer_remote_sdp = NULL;
gchar *answerer_local_sdp_str, *answerer_remote_sdp_str;
gchar *sdp_str = NULL;
audio_codecs_array = create_codecs_array (audio_codecs);
video_codecs_array = create_codecs_array (video_codecs);
g_object_set (offerer, "num-audio-medias", 1, "audio-codecs",
g_array_ref (audio_codecs_array), "num-video-medias", 1, "video-codecs",
g_array_ref (video_codecs_array), NULL);
g_object_set (answerer, "num-audio-medias", 1, "audio-codecs",
g_array_ref (audio_codecs_array), "num-video-medias", 1, "video-codecs",
g_array_ref (video_codecs_array), NULL);
g_array_unref (audio_codecs_array);
g_array_unref (video_codecs_array);
g_signal_emit_by_name (offerer, "generate-offer", &offer);
fail_unless (offer != NULL);
GST_DEBUG ("Offer:\n%s", (sdp_str = gst_sdp_message_as_text (offer)));
g_free (sdp_str);
sdp_str = NULL;
g_signal_emit_by_name (answerer, "process-offer", offer, &answer);
fail_unless (answer != NULL);
GST_DEBUG ("Answer:\n%s", (sdp_str = gst_sdp_message_as_text (answer)));
g_free (sdp_str);
sdp_str = NULL;
g_signal_emit_by_name (offerer, "process-answer", answer);
gst_sdp_message_free (offer);
gst_sdp_message_free (answer);
g_object_get (offerer, "local-sdp", &offerer_local_sdp, NULL);
fail_unless (offerer_local_sdp != NULL);
g_object_get (offerer, "remote-sdp", &offerer_remote_sdp, NULL);
fail_unless (offerer_remote_sdp != NULL);
g_object_get (answerer, "local-sdp", &answerer_local_sdp, NULL);
fail_unless (answerer_local_sdp != NULL);
g_object_get (answerer, "remote-sdp", &answerer_remote_sdp, NULL);
fail_unless (answerer_remote_sdp != NULL);
offerer_local_sdp_str = gst_sdp_message_as_text (offerer_local_sdp);
offerer_remote_sdp_str = gst_sdp_message_as_text (offerer_remote_sdp);
answerer_local_sdp_str = gst_sdp_message_as_text (answerer_local_sdp);
answerer_remote_sdp_str = gst_sdp_message_as_text (answerer_remote_sdp);
GST_DEBUG ("Offerer local SDP\n%s", offerer_local_sdp_str);
GST_DEBUG ("Offerer remote SDPr\n%s", offerer_remote_sdp_str);
GST_DEBUG ("Answerer local SDP\n%s", answerer_local_sdp_str);
GST_DEBUG ("Answerer remote SDP\n%s", answerer_remote_sdp_str);
fail_unless (g_strcmp0 (offerer_local_sdp_str, answerer_remote_sdp_str) == 0);
fail_unless (g_strcmp0 (offerer_remote_sdp_str, answerer_local_sdp_str) == 0);
g_free (offerer_local_sdp_str);
g_free (offerer_remote_sdp_str);
g_free (answerer_local_sdp_str);
g_free (answerer_remote_sdp_str);
gst_sdp_message_free (offerer_local_sdp);
gst_sdp_message_free (offerer_remote_sdp);
gst_sdp_message_free (answerer_local_sdp);
gst_sdp_message_free (answerer_remote_sdp);
g_object_unref (offerer);
g_object_unref (answerer);
}
std::string SDPDescription::get_string() {
gchar* tmp = gst_sdp_message_as_text(sdp_description_);
std::string res(tmp);
g_free(tmp);
return res;
}
GST_END_TEST
GST_START_TEST (negotiation_offerer)
{
GArray *audio_codecs_array, *video_codecs_array;
gchar *audio_codecs[] = { "OPUS/48000/1", "AMR/8000/1", NULL };
gchar *video_codecs[] = { "H263-1998/90000", "VP8/90000", NULL };
gchar *offerer_sess_id, *answerer_sess_id;
GstElement *offerer = gst_element_factory_make ("rtpendpoint", NULL);
GstElement *answerer = gst_element_factory_make ("rtpendpoint", NULL);
GstSDPMessage *offer = NULL, *answer = NULL;
GstSDPMessage *offerer_local_sdp = NULL, *offerer_remote_sdp = NULL;
gchar *offerer_local_sdp_str, *offerer_remote_sdp_str;
GstSDPMessage *answerer_local_sdp = NULL, *answerer_remote_sdp = NULL;
gchar *answerer_local_sdp_str, *answerer_remote_sdp_str;
gchar *sdp_str = NULL;
const GstSDPConnection *connection;
gboolean answer_ok;
audio_codecs_array = create_codecs_array (audio_codecs);
video_codecs_array = create_codecs_array (video_codecs);
g_object_set (offerer, "num-audio-medias", 1, "audio-codecs",
g_array_ref (audio_codecs_array), "num-video-medias", 1, "video-codecs",
g_array_ref (video_codecs_array), NULL);
g_object_set (answerer, "num-audio-medias", 1, "audio-codecs",
g_array_ref (audio_codecs_array), "num-video-medias", 1, "video-codecs",
g_array_ref (video_codecs_array), NULL);
g_array_unref (audio_codecs_array);
g_array_unref (video_codecs_array);
/* Session creation */
g_signal_emit_by_name (offerer, "create-session", &offerer_sess_id);
GST_DEBUG_OBJECT (offerer, "Created session with id '%s'", offerer_sess_id);
g_signal_emit_by_name (answerer, "create-session", &answerer_sess_id);
GST_DEBUG_OBJECT (answerer, "Created session with id '%s'", answerer_sess_id);
/* SDP negotiation */
g_signal_emit_by_name (offerer, "generate-offer", offerer_sess_id, &offer);
fail_unless (offer != NULL);
GST_DEBUG ("Offer:\n%s", (sdp_str = gst_sdp_message_as_text (offer)));
g_free (sdp_str);
sdp_str = NULL;
connection = gst_sdp_message_get_connection (offer);
fail_unless (g_strcmp0 (connection->address, "0.0.0.0"));
fail_unless (g_strcmp0 (connection->address, "::"));
g_signal_emit_by_name (answerer, "process-offer", answerer_sess_id, offer,
&answer);
fail_unless (answer != NULL);
GST_DEBUG ("Answer:\n%s", (sdp_str = gst_sdp_message_as_text (answer)));
g_free (sdp_str);
sdp_str = NULL;
g_signal_emit_by_name (offerer, "process-answer", offerer_sess_id, answer,
&answer_ok);
fail_unless (answer_ok);
gst_sdp_message_free (offer);
gst_sdp_message_free (answer);
g_signal_emit_by_name (offerer, "get-local-sdp", offerer_sess_id,
&offerer_local_sdp);
fail_unless (offerer_local_sdp != NULL);
g_signal_emit_by_name (offerer, "get-remote-sdp", offerer_sess_id,
&offerer_remote_sdp);
fail_unless (offerer_remote_sdp != NULL);
g_signal_emit_by_name (answerer, "get-local-sdp", answerer_sess_id,
&answerer_local_sdp);
fail_unless (answerer_local_sdp != NULL);
g_signal_emit_by_name (answerer, "get-remote-sdp", answerer_sess_id,
&answerer_remote_sdp);
fail_unless (answerer_remote_sdp != NULL);
offerer_local_sdp_str = gst_sdp_message_as_text (offerer_local_sdp);
offerer_remote_sdp_str = gst_sdp_message_as_text (offerer_remote_sdp);
answerer_local_sdp_str = gst_sdp_message_as_text (answerer_local_sdp);
answerer_remote_sdp_str = gst_sdp_message_as_text (answerer_remote_sdp);
GST_DEBUG ("Offerer local SDP\n%s", offerer_local_sdp_str);
GST_DEBUG ("Offerer remote SDPr\n%s", offerer_remote_sdp_str);
GST_DEBUG ("Answerer local SDP\n%s", answerer_local_sdp_str);
GST_DEBUG ("Answerer remote SDP\n%s", answerer_remote_sdp_str);
fail_unless (g_strcmp0 (offerer_local_sdp_str, answerer_remote_sdp_str) == 0);
fail_unless (g_strcmp0 (offerer_remote_sdp_str, answerer_local_sdp_str) == 0);
g_free (offerer_local_sdp_str);
g_free (offerer_remote_sdp_str);
g_free (answerer_local_sdp_str);
g_free (answerer_remote_sdp_str);
gst_sdp_message_free (offerer_local_sdp);
gst_sdp_message_free (offerer_remote_sdp);
gst_sdp_message_free (answerer_local_sdp);
gst_sdp_message_free (answerer_remote_sdp);
g_object_unref (offerer);
g_object_unref (answerer);
g_free (offerer_sess_id);
g_free (answerer_sess_id);
}
static gint create_and_send_ANNOUNCE_message2(GstRTSPsink* sink, GTimeVal *timeout, char **szSessionNumber) {
const gchar *url_client_ip_str = "0.0.0.0";//"192.168.2.104";
const gchar *url_server_str_full = g_strdup_printf("rtsp://%s:%d/%s", sink->host, sink->port, sink->stream_name); //"rtsp://192.168.2.108:1935/live/1";
//conn = sink->conn;
GstRTSPMessage msg = { 0 };
GstSDPMessage *sdp;
GstRTSPMethod method;
GstRTSPResult res;
guint num_ports = 1;
guint rtp_port = 5006;
char *szPayloadType = g_strdup_printf("%d", sink->payload);
method = GST_RTSP_ANNOUNCE ;
res = gst_rtsp_message_init_request(&msg, method, url_server_str_full);
if (res < 0)
return res;
/* set user-agent */
if (sink->user_agent)
gst_rtsp_message_add_header(&msg, GST_RTSP_HDR_USER_AGENT, sink->user_agent);
gst_rtsp_message_add_header(&msg, GST_RTSP_HDR_CONTENT_TYPE, "application/sdp");
// allocate sdp messege buffer...
res = gst_sdp_message_new(&sdp);
//v=..
res = gst_sdp_message_set_version(sdp, "0");
//o=...
res = gst_sdp_message_set_origin(sdp, "-", "0", "0", "IN", "IP4", "0.0.0.0");
//s=..
if (sink->session_name)
res = gst_sdp_message_set_session_name(sdp, "Unnamed");
//i=..
if (sink->information)
res = gst_sdp_message_set_information(sdp, "N/A");
//c=...
res = gst_sdp_message_set_connection(sdp, "IN", "IP4", url_client_ip_str, 0, 0);
//a=...
res = gst_sdp_message_add_attribute(sdp, "recvonly", NULL);
// create media
GstSDPMedia *media;
res = gst_sdp_media_new(&media);
res = gst_sdp_media_init(media);
//m=...
res = gst_sdp_media_set_media(media, "video");
res = gst_sdp_media_set_port_info(media, rtp_port, num_ports);
res = gst_sdp_media_set_proto(media, "RTP/AVP");
res = gst_sdp_media_add_format(media, szPayloadType);
//a=...
char *rtpmap = g_strdup_printf("%s %s/%d", szPayloadType, sink->encoding_name, sink->clock_rate);
res = gst_sdp_media_add_attribute(media, "rtpmap", rtpmap);
res = gst_sdp_media_add_attribute(media, "fmtp", szPayloadType);
res = gst_sdp_media_add_attribute(media, "control", "streamid=0");
// insert media into sdp
res = gst_sdp_message_add_media(sdp, media);
gchar * sdp_str = gst_sdp_message_as_text(sdp);
int size = g_utf8_strlen(sdp_str, 500);
gst_sdp_message_free(sdp);
gst_sdp_media_free(media);
res = gst_rtsp_message_set_body(&msg, sdp_str, size);
sink->responce = &msg;
// Send our packet receive server answer and check some basic checks.
if ((res = sendReceiveAndCheck(sink->conn, timeout, &msg, sink->debug)) != GST_RTSP_OK) {
return res;
}
// get session number
*szSessionNumber = extractSessionNumberFromMessage(&msg);
return GST_RTSP_OK;
}