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rtsp-client: Use a random session ID in the SDP

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RFC4566 Section 5.2 says that it should make the username, session id,
nettype, addrtype and unicast address tuple globally unique. Always using
1188340656180883 is not going to guarantee that: https://xkcd.com/221/

Instead let's create a 64 bit random number, which at least brings us
closer to the goal of global uniqueness.

https://tools.ietf.org/html/rfc4566#section-5.2
This commit is contained in:
Sebastian Dröge 2015-01-18 19:08:36 +01:00
parent 634abb9906
commit 69e346419a
1 changed files with 7 additions and 1 deletions
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8
gst/rtsp-server/rtsp-client.c
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@ -2008,6 +2008,8 @@ create_sdp (GstRTSPClient * client, GstRTSPMedia * media)
GstSDPMessage *sdp;
GstSDPInfo info;
const gchar *proto;
guint64 session_id_tmp;
gchar session_id[21];
gst_sdp_message_new (&sdp);
@ -2019,7 +2021,11 @@ create_sdp (GstRTSPClient * client, GstRTSPMedia * media)
else
proto = "IP4";
gst_sdp_message_set_origin (sdp, "-", "1188340656180883", "1", "IN", proto,
session_id_tmp = (((guint64) g_random_int ()) << 32) | g_random_int ();
g_snprintf (session_id, sizeof (session_id), "%" G_GUINT64_FORMAT,
session_id_tmp);
gst_sdp_message_set_origin (sdp, "-", session_id, "1", "IN", proto,
priv->server_ip);
gst_sdp_message_set_session_name (sdp, "Session streamed with GStreamer");