31.3. Example of message sequence
C->S DESCRIBE rtsp://192.168.0.20/PSIA/Streaming/tracks RTSP/1.0
CSeq: 1
S->C RTSP/1.0 200 OK
CSeq: 1
Content-Base: rtsp://192.168.0.20/PSIA/Streaming/tracks/
Content-Type: application/sdp
Content-Length: 267
v=0
o=- 401875008 1 IN IP4 0.0.0.0
s=Media Presentation
c=IN IP4 0.0.0.0
t=0 0
m=video 0 RTP/AVP 96
a=control:video
a=rtpmap:96 H264/90000
a=fmtp:96
packetization-mode=1;profile-level-id=640028;sprop-parameter-sets=Z2QAKKzSAeAIn5cBbgwMDIA
AAAMAgAAACkeEQjUA,aO48MAD=
C->S SETUP rtsp://192.168.0.20/PSIA/Streaming/tracks/video RTSP/1.0
CSeq: 2
Transport: RTP/AVP;unicast;client_port=6970-6971
S->C RTSP/1.0 200 OK
CSeq: 2
Session: 401875008;timeout=60
Transport: RTP/AVP;unicast;client_port=6970-6971;server_port=1486-1487
C->S GET_PARAMETER rtsp://192.168.0.20/PSIA/Streaming/tracks RTSP/1.0
CSeq: 3
Connection: Keep-Alive
Session: 401875008