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Bug 319183 - rtspsrc filter sometimes uses an odd port for rtp
rtspsrc filter sometimes uses an odd port for rtp
Status: RESOLVED FIXED
Product: GStreamer
Classification: Platform
Component: gst-plugins-good
git master
Other Linux
: Normal major
: 0.10.3
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2005-10-18 19:01 UTC by Sebastien Cote
Modified: 2006-02-16 10:46 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Sebastien Cote 2005-10-18 19:01:18 UTC 
The rtp and rtcp ports used in the rtspsrc filter are read from udpsrc elements
after setting them to the PAUSED state. The result is that sometimes, the RTP
port is odd. 

RFC3550 states that the RTP port SHOULD be even while the RTCP port SHOULD be
the next higher (odd) port number. Apple's Darwin Streaming server returns an
error if the RTP port is odd:


request message 0xbfffe8f0
 request line:
   method: 'SETUP'
   uri:    'rtsp://172.16.133.135:7070/Incredibles.3gp/trackID=3'
 headers:
   key: 'Transport', value:
'RTP/AVP/UDP;unicast;client_port=32835-32837,RTP/AVP/UDP;multicast,RTP/AVP/TCP'
 body:
response message 0xbfffe8d0
 status line:
   code:   '400'
   reason: 'Bad Request'
 headers:
   key: 'CSeq', value: '2'
   key: 'Connection', value: 'Close'
   key: 'Server', value: 'DSS/5.5 (Build/489.7; Platform/Linux; Release/Darwin; )'
 body:
Comment 1 Wim Taymans 2006-02-16 10:46:14 UTC 
        * gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_get_type),
        (gst_rtspsrc_class_init), (gst_rtspsrc_set_property),
        (gst_rtspsrc_get_property), (gst_rtspsrc_stream_setup_rtp):
        * gst/rtsp/gstrtspsrc.h:
        Make sure the RTP port is an even port an try to allocate
        another if not.
        Added retry property to control max retries for port allocation.
        Make sure RTCP port is RTP port+1.
        Cleanup when port allocation fails.
        Fixes #319183.