一個RTSP的過程，瞭解一下RTSP

從裝置廠家下載了一份其RTSP的協議說明，按文檔上的說發，怎麼發都沒有回應，暈菜，最後用它的DEMO串連，再用WireShark工具跟蹤一個完整的過程，

自己再搞了一次完整的過程。

一個RTSP的過程，使用的是一個支援RTSP的攝像機，用Delphi的TClientSocket一個TCP控制項發送字串，

  str := 'DESCRIBE rtsp://192.168.9.88/ch1-s2 RTSP/1.0' + #13#10;
  str := str + 'CSeq: 1' + #13#10;
  str := str + 'Accept: application/sdp' + #13#10;
  str := str + 'Bandwidth:512000' + #13#10;
  str := str + 'Accept-Language: de-DE' + #13#10;
  str := str + 'User-Agent: ma_player' + #13#10+#13#10;

  clntsckt1.Socket.SendText(str);

資料的來回過程如下：

DESCRIBE->SETUP->PLAY->TEARDOWN 

送

DESCRIBE rtsp://192.168.9.88/ch1-s2 RTSP/1.0
CSeq: 1
Accept: application/sdp
Bandwidth:512000
Accept-Language: de-DE
User-Agent: ma_player
回
RTSP/1.0 401 Unauthorized
Server: ESS/2.3.1.6
CSeq: 1
WWW-Authenticate: Basic realm="ESS"

送
DESCRIBE rtsp://192.168.9.88/ch1-s2 RTSP/1.0
CSeq: 2
Accept: application/sdp
Bandwidth:512000
Accept-Language: de-DE
User-Agent: ma_player
Authorization: Basic YWRtaW46YWRtaW4=
回
RTSP/1.0 200 OK
Server: ESS/2.3.1.6
CSeq: 2
Content-Type: application/sdp
Content-Length: 606
Pragma: no-cache
Cache-Control: no-cache
Date: Sat, Mar 24 2012 22:18:24 GMT

v=0
o=- 1332627108 1332627108 IN IP4 0.0.0.0
s=ch1-s2
c=IN IP4 0.0.0.0
a=DevVer:pusher2
a=GroupName:IPCAM
a=NickName:CIF
a=CfgSection:PROG_CHN1
a=voiceout:0
m=video 0 RTP/AVP 96
a=control:trackID=1
a=rtpmap:96 H264/1000
a=fmtp:96 profile-level-id=42E014; sprop-parameter-sets=Z0LgFNoFB8Q=,aM4wpIA=; packetization-mode=1
b=AS:512
a=framesize:96 320-240
a=cliprect:0,0,240,320
a=framerate:25
m=audio 0 RTP/AVP 0
a=control:trackID=2
a=rtpmap:0 PCMU/8000/1
a=fmtp:0 octet-align=1
b=AS:64
m=data 0 RTP/AVP 98
a=control:trackID=3
a=rtpmap:98 X-KATA/1000
a=fmtp:98 octet-align=1
b=AS:2

送
SETUP rtsp://192.168.9.88/ch1-s2/trackID=1 RTSP/1.0
CSeq: 3
Transport:RTP/AVP/TCP;unicast;interleaved=0-1
Accept-Language:de-DE
user-Agent:ma_player
Authorization:Basic YWRtaW46YWRtaW4=
回
RTSP/1.0 200 OK
Server: ESS/2.3.1.6
CSeq: 3
Pragma: no-cache
Cache-Control: no-cache
Transport: RTP/AVP/TCP;unicast;interleaved=0-1;ssrc=07FAC83B
Session: 0x5f290
Date: Sat, Mar 24 2012 22:35:39 GMT

送
SETUP rtsp://192.168.9.88/ch1-s2/trackID=2 RTSP/1.0
CSeq: 4
session:0x5c8a0
Transport:RTP/AVP/TCP;unicast;interleaved=2-3
Accept-Language:de-DE
user-Agent:ma_player
Authorization:Basic YWRtaW46YWRtaW4=
回
RTSP/1.0 200 OK
Server: ESS/2.3.1.6
CSeq: 4
Pragma: no-cache
Cache-Control: no-cache
Transport: RTP/AVP/TCP;unicast;interleaved=2-3;ssrc=07FAC83B
Session: 0x5f290
Date: Sat, Mar 24 2012 22:38:22 GMT

送
PLAY rtsp://192.168.9.88/ch1-s2 RTSP/1.0
CSeq: 5
Range:npt=0.000000-
session:0x5c8a0
Accept-Language:de-DE
user-Agent:ma_player
Authorization:Basic YWRtaW46YWRtaW4=
回
RTSP/1.0 200 OK
Server: ESS/2.3.1.6
CSeq: 5
Range: npt=now-
Pragma: no-cache
Cache-Control: no-cache
Session: 0x73ed0
Date: Sat, Mar 24 2012 22:43:49 GMT
RTP-Info: url=rtsp://192.168.9.88/ch1-s2/trackID=1,url=rtsp://192.168.9.88/ch1-s2/trackID=2
。。。。。。。。。。

這裡開始收到流資料了。。。。。。。。。

送
TEARDOWN rtsp://192.168.9.88/ch1-s2 RTSP/1.0
CSeq:7
session:0x5c80a
Accept-Language:de-DE
user-Agent:ma_player
回
RTSP/1.0 200 OK
Server: ESS/2.3.1.6
CSeq: 7
Pragma: no-cache
Cache-Control: no-cache
Date: Sat, Mar 24 2012 22:50:11 GMT
斷開