项目要求使用RTSP协议进行点播直播,
找了很多开源流媒体服务器,最后决定使用Drawin做服务器。
但是在部署中发现,Drawin不支持Client在NAT后面的情况。 尽管RTSP Client已经发出了RTSP的打洞包。
还好, Darwin 是开源的 ,直接上手修改代码。
其实修改的部分很少,也很简单。
就是RTPStream.cpp
RTPStream::Write 方法
现实修改RTCP部分
- if ( fTransportType == qtssRTPTransportTypeTCP )// write out in interleave format on the RTSP TCP channel
- {
- err = this->InterleavedWrite( thePacket->packetData, inLen, outLenWritten, fRTCPChannel );
- }
- else if ( inLen > 0 )
- {
- (void)fSockets->GetSocketB()->SendTo(fRemoteAddr, fRemoteRTCPPort, thePacket->packetData, inLen);
- }
修改为
- if ( fTransportType == qtssRTPTransportTypeTCP )// write out in interleave format on the RTSP TCP channel
- {
- err = this->InterleavedWrite( thePacket->packetData, inLen, outLenWritten, fRTCPChannel );
- }
- else if ( inLen > 0 )
- {
- UInt32 iRemoteAddr=0;
- UInt16 iRemotePort=0;
- char szBuff[64];
- UInt32 iBufLen=sizeof(szBuff);
- UInt32 iRecvLen=0;
- (void)fSockets->GetSocketB()->RecvFrom(&iRemoteAddr,&iRemotePort,szBuff,iBufLen,&iRecvLen);
- if (iRemoteAddr==fRemoteAddr
- &&iRemotePort!=0
- &&iRecvLen>0)
- {
- fRemoteRTCPPort=iRemotePort;
- }
- (void)fSockets->GetSocketB()->SendTo(fRemoteAddr, fRemoteRTCPPort, thePacket->packetData, inLen);
- }
以类似的方法修改RTP的发送部分
转自 http://www.rosoo.net/a/201104/11322.html