rtsp/rtp over http

轉載：http://linux-expert.blog.163.com/blog/static/764585292008530912712/

rtsp/rtp over http

C->S (get)     GET /1.3gp HTTP/1.0     User-Agent: ./openRTSP (LIVE555 Streaming Media v2007.07.09)     x-sessioncookie: 5ba041fbf06108c6e9565a1     Accept: application/x-rtsp-tunnelled     Pragma: no-cache     Cache-Control: no-cache S->C(reply)     HTTP/1.0 200 OK\r\n     Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; )\r\n     Content-Type: application/x-rtsp-tunnelled\r\n C->S (post)     POST /1.3gp HTTP/1.0     User-Agent: ./openRTSP (LIVE555 Streaming Media v2007.07.09)     x-sessioncookie: 5ba041fbf06108c6e9565a1     Content-Type: application/x-rtsp-tunnelled     Pragma: no-cache     Cache-Control: no-cache     Content-Length: 32767     Expires: Sun, 9 Jan 1972 00:00:00 GMT C->S(option)      T1BUSU9OUyBydHNwOi8vMTcyLjE2LjEwMC43OC8xLjNncCBSVFNQLzEuMA0KQ1NlcTogMQ0KVXNlci1BZ2VudDogLi9vcGVuUlRTUCAoT ElWRTU1NSBTdHJlYW1pbmcgTWVkaWEgdjIwMDcuMDcuMDkpDQoNCg== 這種經過HTTPchannel方式的區別就是它將C->S的請求(POST), 經過base64編碼以後再發給服務器。這樣中間路由防火牆 就看不到這個RTSP請求了。 S->C(reply)     RTSP/1.0 200 OK     Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; )     Cseq: 1     Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE, OPTIONS, ANNOUNCE, RECORD C->S (describe) REVTQ1JJQkUgcnRzcDovLzE3Mi4xNi4xMDAuNzgvMS4zZ3AgUlRTUC8xLjANCkNTZXE6IDINCkFjY2VwdDogYXBwbGljYXRpb24vc2RwD QpVc2VyLUFnZW50OiAuL29wZW5SVFNQIChMSVZFNTU1IFN0cmVhbWluZyBNZWRpYSB2MjAwNy4wNy4wOSkNCg0K S->C (reply) RTSP/1.0 200 OK Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; ) Cseq: 2 Last-Modified: Thu, 19 Jul 2007 01:41:09 GMT Cache-Control: must-revalidate Content-length: 504 Date: Mon, 23 Jul 2007 02:23:42 GMT Expires: Mon, 23 Jul 2007 02:23:42 GMT Content-Type: application/sdp x-Accept-Retransmit: our-retransmit x-Accept-Dynamic-Rate: 1 Content-Base: rtsp://172.16.100.78/1.3gp/ v=0 o=StreamingServer 3394146222 1184809269000 IN IP4 172.16.100.78 s=/1.3gp u=http:/// e=admin@ c=IN IP4 0.0.0.0 b=AS:50 t=0 0 a=control:* a=range:npt=0- 70.00000 m=video 0 RTP/AVP 96 b=AS:41 a=rtpmap:96 MP4V-ES/90000 a=control:trackID=3 a=cliprect:0,0,144,176 a=framesize:96 176-144 a=fmtp:96 profile-level-id=1;config=000001B008000001B50EE040C0CF0000010000000120008440FA282C2090A21F m=audio 0 RTP/AVP 97 b=AS:8 a=rtpmap:97 AMR/8000/1 a=control:trackID=4 a=fmtp:97 octet-align=1 C->S (SETUP) U0VUVVAgcnRzcDovLzE3Mi4xNi4xMDAuNzgvMS4zZ3AvdHJhY2tJRD0zIFJUU1AvMS4wDQpDU2VxOiAzDQpUcmFuc3BvcnQ6IFJUUC9BV lAvVENQO3VuaWNhc3Q7aW50ZXJsZWF2ZWQ9MC0xDQpVc2VyLUFnZW50OiAuL29wZW5SVFNQIChMSVZFNTU1IFN0cmVhbWluZyBNZWRpYS B2MjAwNy4wNy4wOSkNCg0K S->C(reply) RTSP/1.0 200 OK Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; ) Cseq: 3 Last-Modified: Thu, 19 Jul 2007 01:41:09 GMT Cache-Control: must-revalidate Session: 2110769224986338178 Date: Mon, 23 Jul 2007 02:23:42 GMT Expires: Mon, 23 Jul 2007 02:23:42 GMT Transport: RTP/AVP/TCP;unicast;interleaved=0-1;ssrc=771536A8 C->S(setup) U0VUVVAgcnRzcDovLzE3Mi4xNi4xMDAuNzgvMS4zZ3AvdHJhY2tJRD00IFJUU1AvMS4wDQpDU2VxOiA0DQpUcmFuc3BvcnQ6IFJUUC9BV lAvVENQO3VuaWNhc3Q7aW50ZXJsZWF2ZWQ9Mi0zDQpTZXNzaW9uOiAyMTEwNzY5MjI0OTg2MzM4MTc4DQpVc2VyLUFnZW50OiAuL29wZW 5SVFNQIChMSVZFNTU1IFN0cmVhbWluZyBNZWRpYSB2MjAwNy4wNy4wOSkNCg0K S->C(reply) RTSP/1.0 200 OK Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; ) Cseq: 4 Session: 2110769224986338178 Last-Modified: Thu, 19 Jul 2007 01:41:09 GMT Cache-Control: must-revalidate Date: Mon, 23 Jul 2007 02:23:42 GMT Expires: Mon, 23 Jul 2007 02:23:42 GMT Transport: RTP/AVP/TCP;unicast;interleaved=2-3;ssrc=4CAA823B C->S (play) UExBWSBydHNwOi8vMTcyLjE2LjEwMC43OC8xLjNncC8gUlRTUC8xLjANCkNTZXE6IDUNClNlc3Npb246IDIxMTA3NjkyMjQ5ODYzMzgxN zgNClJhbmdlOiBucHQ9MC4wMDAtDQpVc2VyLUFnZW50OiAuL29wZW5SVFNQIChMSVZFNTU1IFN0cmVhbWluZyBNZWRpYSB2MjAwNy4wNy 4wOSkNCg0K S->C (reply) RTSP/1.0 200 OK Server: DSS/5.5.5 (Build/489.16; Platform/Linux; Release/Darwin; state/beta; ) Cseq: 5 Session: 2110769224986338178 Range: npt=0.00000-70.00000 RTP-Info:  url=rtsp://172.16.100.78/1.3gp/trackID=3;seq=11720;rtptime=1814783692,url=rtsp://172.16.100.78/1.3gp/trac kID=4;seq=53596;rtptime=894859716 S->C (data) 2400017580e02deb6c2e9b1c771536a8000001b65567809f5b1f7c49120bbea0bc4b1f2affc46f2b2ff7bff456b8d3e81cf0301b1 2d5095b1983f2f2fc5c1b0200f8491271382161281ab947c2489410d50191f7ef2acacb95f95096252b80a61247c5cac90e3d86ce 7f30ffd780b27197c296044540f13005aad022a3741884d9d7a01a9cfac51a701c189a2459b25823ac99fe9548e164d53bbe157e6 b497ad493b6a2728aa390459642b7acfa4c7f402c9d935bcf7970f5fecea6604227719835d87202dc6b98da4942d966ec5cffcd5f 9989e7126f4602936e804f9c3bbce8da434061b5d3402c1f396c98bc89d98969691c94fec3d34b0b2e6402facb720dca88c1cfe92 7454787068ffe029e1612ce8d5fd3c0490054eb098052636f6b4458053be4145a19ba9e062e02c6a94608cad0fa8aecc32f3663d3 56d46f0a518baa87557e93ef3d9fe7a360f3b931e3a029302afe3ca46d1381c3ee79bf21fec753df9abd318f37c209e74db04c21e 71816d3e75ef5b7fffe 咱們只關心前面4個字節，根據rfc2326 10.12, 這種交織方式第一個字節是一個美圓符號($),ASCII碼爲24.第二個字節是交織channel的ID，這裏是0，而後兩個字節就表示接下來的數據的長度。表示接下來的數據長度是0x0175. channel爲0表示爲RTP數據，即接下來的數據是一個RTP數據包，所以開始部分也就是這個RTP包的頭部。也是能夠給解析 的。