public override bool OnEvent(SocketAsyncEventArgs e)
{
e.ReturnPool();
if (e.SocketError != SocketError.Success)
{
return(false);
}
var protocol = ProtocolFactoryManager.CreateProtocolChain(_protocolChain, _customParameters);
if (protocol == null)
{
Logger.FATAL("Unable to create protocol chain");
_closeSocket = true;
return(false);
}
var tcpCarrier = new TCPCarrier(Socket)
{
Protocol = protocol.FarEndpoint
};
protocol.FarEndpoint.IOHandler = tcpCarrier;
tcpCarrier.ReadEnabled = true;
if (!SignalProtocolCreated(protocol, _customParameters))
{
protocol.Dispose();
_closeSocket = true;
return(false);
}
_success = true;
_closeSocket = false;
IOHandlerManager.EnqueueForDelete(this);
return(true);
}
public bool Accept(SocketAsyncEventArgs socketAsyncEvent)
{
if (!_enabled)
{
Logger.WARN("Acceptor is not enabled.");
_droppedCount++;
return(true);
}
Logger.INFO("Client connected:{0}:{1} -> {2}:{3}", (socketAsyncEvent.AcceptSocket.RemoteEndPoint as IPEndPoint).Address.ToString(), (socketAsyncEvent.AcceptSocket.RemoteEndPoint as IPEndPoint).Port, _ipAddress, _port);
BaseProtocol pProtocol = ProtocolFactoryManager.CreateProtocolChain(_protocolChain, Parameters);
if (pProtocol == null)
{
Logger.FATAL("Unable to create protocol chain");
socketAsyncEvent.AcceptSocket.Close();
return(false);
}
var pTcpCarrier = new TCPCarrier(socketAsyncEvent.AcceptSocket)
{
Protocol = pProtocol.FarEndpoint,
ReadEnabled = true
};
pProtocol.FarEndpoint.IOHandler = pTcpCarrier;
//6. Register the protocol stack with an application
if (Application != null)
{
pProtocol = pProtocol.NearEndpoint;
pProtocol.Application = Application;
}
//if (pProtocol.NearEndpoint.OutputBuffer != null)
// pProtocol.NearEndpoint.EnqueueForOutbound();
if (AcceptEnabled)
{
socketAsyncEvent.AcceptSocket = null;
try
{
if (!Socket.AcceptAsync(socketAsyncEvent))
{
OnEvent(socketAsyncEvent);
}
}
catch (Exception ex)
{
Logger.FATAL(ex.Message);
return(false);
}
}
else
{
socketAsyncEvent.ReturnPool();
}
_acceptedCount++;
return(true);
}
bool BindAcceptor(Variant node)
{
//1. Get the chain
var chain = ProtocolFactoryManager.ResolveProtocolChain(node[CONF_PROTOCOL]);
if (chain.Count == 0)
{
WARN("Invalid protocol chain: {0}", node[CONF_PROTOCOL]);
}
//2. Is it TCP or UDP based?
if (chain[0] == ProtocolTypes.PT_TCP)
{
//3. This is a tcp acceptor. Instantiate it and start accepting connections
var pAcceptor = new TCPAcceptor(node[CONF_IP], node[CONF_PORT], node, chain);
if (!pAcceptor.Bind())
{
FATAL("Unable to fire up acceptor from this config node:{0}", node.ToString());
return(false);
}
acceptors.Add(pAcceptor);
return(true);
}
else if (chain[0] == ProtocolTypes.PT_UDP)
{
//4. Ok, this is an UDP acceptor. Because of that, we can instantiate
//the full stack. Get the stack first
var pProtocol = ProtocolFactoryManager.CreateProtocolChain(chain, node);
if (pProtocol == null)
{
FATAL("Unable to instantiate protocol stack {0}", node[CONF_PROTOCOL]);
return(false);
}
//5. Create the carrier and bind it
var pUDPCarrier = UDPCarrier.Create(node[CONF_IP], node[CONF_PORT], pProtocol);
if (pUDPCarrier == null)
{
FATAL("Unable to instantiate UDP carrier on {0}:{1}", node[CONF_IP],
node[CONF_PORT]);
pProtocol.EnqueueForDelete();
return(false);
}
pUDPCarrier.Parameters = node;
acceptors.Add(pUDPCarrier);
return(true);
}
else
{
FATAL("Invalid carrier type");
return(false);
}
}
public bool AddTrack(Variant track, bool isAduio)
{
var _track = isAduio ? _audioTrack : _videoTrack;
var _oppositeTrack = isAduio ? _videoTrack : _audioTrack;
var rr = isAduio ? _audioRR : _videoRR;
if (_track != null)
{
return(false);
}
var application = _rtsp.Application;
if (application == null)
{
FATAL("RTSP protocol not yet assigned to an application");
return(false);
}
if (isAduio)
{
_audioTrack = track;
}
else
{
_videoTrack = track;
}
_track = track;
if (_oppositeTrack != null)
{
if (_oppositeTrack["isTcp"] != _track["isTcp"])
{
return(false);
}
}
_forceTcp = _track["isTcp"];
var dummy = new Variant();
var rtp = (InboundRtpProtocol)ProtocolFactoryManager.CreateProtocolChain(Defines.CONF_PROTOCOL_INBOUND_UDP_RTP, dummy);
if (rtp == null)
{
FATAL("Unable to create the protocol chain");
Cleanup();
return(false);
}
if (isAduio)
{
_rtpAudio = rtp;
}
else
{
_rtpVideo = rtp;
}
var rtcp = (RtcpProtocol)ProtocolFactoryManager.CreateProtocolChain(Defines.CONF_PROTOCOL_UDP_RTCP, dummy);
if (rtcp == null)
{
FATAL("Unable to create the protocol chain");
Cleanup();
return(false);
}
if (isAduio)
{
_rtcpAudio = rtcp;
}
else
{
_rtcpVideo = rtcp;
}
if (_track["isTcp"])
{
var dataIdx = 0u;
var rtcpIdx = 0u;
if (_track["portsOrChannels", "data"] && _track["portsOrChannels", "rtcp"])
{
dataIdx = _track["portsOrChannels", "data"];
rtcpIdx = _track["portsOrChannels", "rtcp"];
}
else
{
dataIdx = (uint)(_track["globalTrackIndex"] * 2);
rtcpIdx = dataIdx + 1;
}
if ((dataIdx >= 256) || (rtcpIdx >= 256))
{
FATAL("Invalid channel numbers");
return(false);
}
if (_protocols.ContainsKey(dataIdx) || _protocols.ContainsKey(rtcpIdx))
{
FATAL("Invalid channel numbers");
return(false);
}
_protocols[dataIdx] = rtp;
_protocols[rtcpIdx] = rtcp;
rr.Write(8, rtp.SSRC); //SSRC of packet sender
rr.Write(40, rtcp.SSRC); //SSRC of packet sender
rr[1] = (byte)rtcpIdx;
}
else
{
if (!CreateCarriers(rtp, rtcp))
{
FATAL("Unable to create carriers");
return(false);
}
}
rtp.Application = application;
rtcp.Application = application;
return(true);
}
public bool InitializePorts(out Socket socket, out int port, ref NATTraversalProtocol ppNATData, out Socket rtcp, out int rtcpPort, ref NATTraversalProtocol ppNATRTCP)
{
UDPCarrier carrier1 = null;
UDPCarrier carrier2 = null;
for (int i = 0; i < 10; i++)
{
if (carrier1 != null)
{
carrier1.Dispose();
carrier1 = null;
}
if (carrier2 != null)
{
carrier2.Dispose();
carrier2 = null;
}
carrier1 = UDPCarrier.Create("0.0.0.0", 0);
if (carrier1 == null)
{
WARN("Unable to create UDP carrier for RTP");
continue;
}
carrier2 = (carrier1.NearPort % 2) == 0 ? UDPCarrier.Create("0.0.0.0", carrier1.NearPort + 1) : UDPCarrier.Create("0.0.0.0", carrier1.NearPort - 1);
if (carrier2 == null)
{
WARN("Unable to create UDP carrier for RTCP");
continue;
}
if (carrier1.NearPort > carrier2.NearPort)
{
WARN("Switch carriers");
UDPCarrier pTemp = carrier1;
carrier1 = carrier2;
carrier2 = pTemp;
}
Variant dummy = Variant.Get();
socket = carrier1.Socket;
port = carrier1.NearPort;
ppNATData = (NATTraversalProtocol)ProtocolFactoryManager.CreateProtocolChain(Defines.CONF_PROTOCOL_RTP_NAT_TRAVERSAL, dummy);
if (ppNATData == null)
{
rtcp = null;
rtcpPort = 0;
FATAL("Unable to create the protocol chain {0}", Defines.CONF_PROTOCOL_RTP_NAT_TRAVERSAL);
return(false);
}
carrier1.Protocol = ppNATData.FarEndpoint;
ppNATData.FarEndpoint.IOHandler = carrier1;
rtcp = carrier2.Socket;
rtcpPort = carrier2.NearPort;
ppNATRTCP = (NATTraversalProtocol)ProtocolFactoryManager.CreateProtocolChain(Defines.CONF_PROTOCOL_RTP_NAT_TRAVERSAL, dummy);
if (ppNATRTCP == null)
{
FATAL("Unable to create the protocol chain {0}", Defines.CONF_PROTOCOL_RTP_NAT_TRAVERSAL);
ppNATData.EnqueueForDelete();
return(false);
}
carrier2.Protocol = ppNATRTCP.FarEndpoint;
ppNATRTCP.FarEndpoint.IOHandler = carrier2;
return(true);
}
if (carrier1 != null)
{
carrier1.Dispose();
carrier1 = null;
}
if (carrier2 != null)
{
carrier2.Dispose();
carrier2 = null;
}
socket = null;
port = 0;
rtcp = null;
rtcpPort = 0;
return(false);
}