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sdp: pass multicast connection for multicast-only stream

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Pass the multicast address of the stream in the connection info in the
SDP so that clients try a multicast connection first.
Only allow multicast connections in the test-multicast example. Also
increase the TTL a little.
This commit is contained in:
Wim Taymans 2014-03-03 15:12:55 +01:00
parent 21144cb6e2
commit 2bd90b539c
2 changed files with 39 additions and 4 deletions
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5
examples/test-multicast.c
View file

@ -70,8 +70,11 @@ main (int argc, char *argv[])
/* make a new address pool */
pool = gst_rtsp_address_pool_new ();
gst_rtsp_address_pool_add_range (pool,
"224.3.0.0", "224.3.0.10", 5000, 5010, 1);
"224.3.0.0", "224.3.0.10", 5000, 5010, 16);
gst_rtsp_media_factory_set_address_pool (factory, pool);
/* only allow multicast */
gst_rtsp_media_factory_set_protocols (factory,
GST_RTSP_LOWER_TRANS_UDP_MCAST);
g_object_unref (pool);
/* attach the test factory to the /test url */

38
gst/rtsp-server/rtsp-sdp.c
View file

@ -108,6 +108,11 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
gboolean first;
GString *fmtp;
GstCaps *caps;
GstRTSPLowerTrans ltrans;
GSocketFamily family;
const gchar *addrtype;
gchar *address;
guint ttl;
stream = gst_rtsp_media_get_stream (media, i);
caps = gst_rtsp_stream_get_caps (stream);
@ -138,13 +143,40 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
gst_sdp_media_set_port_info (smedia, 0, 1);
gst_sdp_media_set_proto (smedia, "RTP/AVP");
/* for the c= line */
if (info->is_ipv6) {
gst_sdp_media_add_connection (smedia, "IN", "IP6", "::", 16, 0);
addrtype = "IP6";
family = G_SOCKET_FAMILY_IPV6;
} else {
gst_sdp_media_add_connection (smedia, "IN", "IP4", "0.0.0.0", 16, 0);
addrtype = "IP4";
family = G_SOCKET_FAMILY_IPV4;
}
ltrans = gst_rtsp_stream_get_protocols (stream);
if (ltrans == GST_RTSP_LOWER_TRANS_UDP_MCAST) {
GstRTSPAddress *addr;
addr = gst_rtsp_stream_get_multicast_address (stream, family);
if (addr == NULL) {
gst_sdp_media_free (smedia);
gst_caps_unref (caps);
g_warning ("ignoring stream %d without multicast address", i);
continue;
}
address = g_strdup (addr->address);
ttl = addr->ttl;
gst_rtsp_address_free (addr);
} else {
ttl = 16;
if (info->is_ipv6)
address = g_strdup ("::");
else
address = g_strdup ("0.0.0.0");
}
/* for the c= line */
gst_sdp_media_add_connection (smedia, "IN", addrtype, address, ttl, 1);
g_free (address);
/* get clock-rate, media type and params for the rtpmap attribute */
gst_structure_get_int (s, "clock-rate", &caps_rate);
caps_enc = gst_structure_get_string (s, "encoding-name");