本文共 4368 字，大约阅读时间需要 14 分钟。

说明：SPVMN平台IP为192.168.8.180，设备IP为192.168.8.184

一、向平台注册的交互协议

1、客户机向SPVMN平台注册协议

REGISTER sip:34020000002000000001@3402000000 SIP/2.0Via: SIP/2.0/UDP 192.168.8.184:5060;rport;branch=z9hG4bK1839159132From: 
   
    ;tag=1168363890To: 
    
     Call-ID: 434018964CSeq: 1 REGISTERContact: 
     
      Max-Forwards: 70User-Agent: IP CameraExpires: 3600Content-Length: 0
     
    
   

2、平台回复包

SIP/2.0 401 UnauthorizedCSeq: 1 REGISTERCall-ID: 434018964From: 
   
    ;tag=1168363890To: 
    
     ;tag=90691234_53173353_a67d0e0e-e55c-4ac7-9d5a-f78e149aaf81Via: SIP/2.0/UDP 192.168.8.184:5060;rport=5060;branch=z9hG4bK1839159132;received=192.168.8.184WWW-Authenticate: Digest realm="3402000000",nonce="b1f444e6805f2768"Content-Length: 0
    
   

3、验证注册

REGISTER sip:34020000002000000001@3402000000 SIP/2.0Via: SIP/2.0/UDP 192.168.8.184:5060;rport;branch=z9hG4bK119722870From: 
   
    ;tag=1168363890To: 
    
     Call-ID: 434018964CSeq: 2 REGISTERContact: 
     
      Authorization: Digest username="34020000001320000001", realm="3402000000", nonce="b1f444e6805f2768", uri="sip:34020000002000000001@3402000000", response="97cae60143bf336443d0bc5e669571a9", algorithm=MD5Max-Forwards: 70User-Agent: IP CameraExpires: 3600Content-Length: 0
     
    
   

4、平台回复

SIP/2.0 200 OKCSeq: 2 REGISTERCall-ID: 434018964From: 
   
    ;tag=1168363890To: 
    
     ;tag=02949493_53173353_db24af08-e421-4de3-85e7-b3f3f5284b02Via: SIP/2.0/UDP 192.168.8.184:5060;rport=5060;branch=z9hG4bK119722870;received=192.168.8.184Contact: 
     
      Expires: 3600Date: 2015-11-05T10:55:56.012Content-Length: 0
     
    
   

5、客户端向平台的消息请求包

MESSAGE sip:34020000002000000001@3402000000 SIP/2.0Via: SIP/2.0/UDP 192.168.8.184:5060;rport;branch=z9hG4bK10460200From: 
   
    ;tag=1056449357To: 
    
     Call-ID: 897764098CSeq: 20 MESSAGEContent-Type: Application/MANSCDP+xmlMax-Forwards: 70User-Agent: IP CameraContent-Length:   162
     
     
      
       Keepalive
      
      
       105
      
      
       34020000001320000001
      
      
       OK
      
     
    
   

6、平台回复

D?IWEge<@SSIP/2.0 200 OKCSeq: 20 MESSAGECall-ID: 897764098From: 
   
    ;tag=1056449357To: 
    
     ;tag=32617088_53173353_9281af7a-b890-44e0-8033-2f61d4af7c64Via: SIP/2.0/UDP 192.168.8.184:5060;rport=5060;branch=z9hG4bK10460200;received=192.168.8.184Content-Length: 0
    
   

到此，注册成功。

二、视频播放协议

2.1 平台向设备请求数据

INVITE sip:34020000001320000001@3402000000 SIP/2.0Call-ID: 8da28ff25846846583477063d4008180@0.0.0.0CSeq: 1 INVITEFrom: 
   
    ;tag=41363971_53173353_e9868597-2a56-4171-911d-d527eb58c307To: 
    
     Max-Forwards: 70Contact: "34020000002000000001" 
     
      192.168.8.180
      :5060>Content-Type: application/sdpRoute: 
      
       Via: SIP/2.0/UDP 192.168.8.180:5060;branch=z9hG4bKe9868597-2a56-4171-911d-d527eb58c307_53173353_50921343723068Content-Length: 225v=0o=34020000002020000001 0 0 IN IP4 192.168.8.180s=Playc=IN IP4 192.168.8.180t=0 0m=video 6000 RTP/AVP 96 98 97a=recvonlya=rtpmap:96 PS/90000a=rtpmap:98 H264/90000a=rtpmap:97 MPEG4/90000y=0100000001f=
      
     
    
   

2.2 设备回复平台的包

SIP/2.0 100 TryingVia: SIP/2.0/UDP 192.168.8.180:5060;branch=z9hG4bKe9868597-2a56-4171-911d-d527eb58c307_53173353_50921343723068;received=192.168.8.180From: 
   
    ;tag=41363971_53173353_e9868597-2a56-4171-911d-d527eb58c307To: 
    
     Call-ID: 8da28ff25846846583477063d4008180@0.0.0.0CSeq: 1 INVITEUser-Agent: IP CameraContent-Length: 0
    
   

SIP/2.0 200 OKVia: SIP/2.0/UDP 192.168.8.180:5060;branch=z9hG4bKe9868597-2a56-4171-911d-d527eb58c307_53173353_50921343723068;received=192.168.8.180From: 
   
    ;tag=41363971_53173353_e9868597-2a56-4171-911d-d527eb58c307To: 
    
     ;tag=833711816Call-ID: 8da28ff25846846583477063d4008180@0.0.0.0CSeq: 1 INVITEContact: 
     
      Content-Type: application/sdpUser-Agent: IP CameraContent-Length:   227v=0o=34020000001320000001 3238 3238 IN IP4 192.168.8.184s=playc=IN IP4 192.168.8.184t=0 0m=video 15060 RTP/AVP 96a=sendonlya=rtpmap:96 PS/90000a=username:34020000001320000001a=password:12345678y=0100000001
     
    
   

2.3 平台发给设备的ACK，设备收到这个包后，就可以向平台发送RTP数据了

ACK sip:34020000001320000001@192.168.8.184:5060 SIP/2.0Call-ID: 8da28ff25846846583477063d4008180@0.0.0.0CSeq: 1 ACKFrom: 
   
    ;tag=41363971_53173353_e9868597-2a56-4171-911d-d527eb58c307To: 
    
     ;tag=833711816Max-Forwards: 70Via: SIP/2.0/UDP 192.168.8.180:5060;branch=z9hG4bKe9868597-2a56-4171-911d-d527eb58c307_53173353_50921370541873Content-Length: 0
    
   

转载地址：http://mvldi.baihongyu.com/