private bool TurnServer_Received(ServersManager <TurnConnection> s, TurnConnection c, ref ServerAsyncEventArgs e) { if (e.LocalEndPoint.Protocol == ServerProtocol.Udp) { if (TurnMessage.IsTurnMessage(e.Buffer, e.Offset, e.BytesTransferred)) { TurnServer_TurnDataReceived(ref e); } else { TurnServer_PeerDataReceived(ref e); } } else if (e.LocalEndPoint.Protocol == ServerProtocol.Tcp) { if (c.Buffer.IsValid) { c.Buffer.Resize(Math.Max(4096, c.BytesExpected)); if (c.Buffer.CopyTransferredFrom(e, 0) == false) { return(false); } if (c.Buffer.Count < c.BytesExpected) { return(true); } } else { if (e.BytesTransferred < c.BytesExpected) { return(c.Buffer.CopyTransferredFrom(e, 0)); } } int proccessed = 0; for (; ;) { if (c.Buffer.IsValid) { if (e == null) { e = EventArgsManager.Get(); e.CopyAddressesFrom(c); } e.AttachBuffer(c.Buffer); proccessed = 0; } if (e.BytesTransferred - proccessed < c.BytesExpected) { return(c.Buffer.CopyTransferredFrom(e, proccessed)); } switch (c.Phase) { case TcpPhase.WaitingFirstXpacket: if (pseudoTlsMessage.IsBeginOfClientHello(e.Buffer, e.Offset, FirstXpacketLength)) { c.Phase = TcpPhase.WaitingClientHello; c.BytesExpected = PseudoTlsMessage.ClientHelloLength; } else { c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; if (FirstXpacketLength <= TcpFramingHeader.TcpFramingHeaderLength) { goto case TcpPhase.WaitingTcpFrame; } } break; case TcpPhase.WaitingClientHello: if (pseudoTlsMessage.IsClientHello(e.Buffer, e.Offset) == false) { return(false); } var x = EventArgsManager.Get(); x.CopyAddressesFrom(e); x.Count = PseudoTlsMessage.ServerHelloHelloDoneLength; pseudoTlsMessage.GetServerHelloHelloDoneBytes(x.Buffer, x.Offset); s.SendAsync(x); proccessed += c.BytesExpected; c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; break; case TcpPhase.WaitingTcpFrame: TcpFramingHeader tcpHeader; if (TcpFramingHeader.TryParse(e.Buffer, e.Offset, out tcpHeader) == false) { return(false); } proccessed += c.BytesExpected; c.Phase = (tcpHeader.Type == TcpFrameType.ControlMessage) ? TcpPhase.WaitingTurnControlMessage : TcpPhase.WaitingTurnEndToEndData; c.BytesExpected = tcpHeader.Length; break; case TcpPhase.WaitingTurnEndToEndData: case TcpPhase.WaitingTurnControlMessage: if (e.BytesTransferred - proccessed < c.BytesExpected) { if (c.Buffer.CopyTransferredFrom(e, proccessed + c.BytesExpected) == false) { return(false); } } e.Count -= proccessed; e.Offset += proccessed; e.BytesTransferred = c.BytesExpected; if (c.Phase == TcpPhase.WaitingTurnEndToEndData) { TurnServer_PeerDataReceived(ref e); } else { TurnServer_TurnDataReceived(ref e); } proccessed = e.BytesTransferred; c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; break; default: throw new NotImplementedException(); } } } else { throw new NotImplementedException(); } return(true); }
private bool TurnServer_Received(ServersManager<TurnConnection> s, TurnConnection c, ref ServerAsyncEventArgs e) { if (e.LocalEndPoint.Protocol == ServerProtocol.Udp) { if (TurnMessage.IsTurnMessage(e.Buffer, e.Offset, e.BytesTransferred)) TurnServer_TurnDataReceived(ref e); else TurnServer_PeerDataReceived(ref e); } else if (e.LocalEndPoint.Protocol == ServerProtocol.Tcp) { if (c.Buffer.IsValid) { c.Buffer.Resize(Math.Max(4096, c.BytesExpected)); if (c.Buffer.CopyTransferredFrom(e, 0) == false) return false; if (c.Buffer.Count < c.BytesExpected) return true; } else { if (e.BytesTransferred < c.BytesExpected) return c.Buffer.CopyTransferredFrom(e, 0); } int proccessed = 0; for (; ; ) { if (c.Buffer.IsValid) { if (e == null) { e = EventArgsManager.Get(); e.CopyAddressesFrom(c); } e.AttachBuffer(c.Buffer); proccessed = 0; } if (e.BytesTransferred - proccessed < c.BytesExpected) return c.Buffer.CopyTransferredFrom(e, proccessed); switch (c.Phase) { case TcpPhase.WaitingFirstXpacket: if (pseudoTlsMessage.IsBeginOfClientHello(e.Buffer, e.Offset, FirstXpacketLength)) { c.Phase = TcpPhase.WaitingClientHello; c.BytesExpected = PseudoTlsMessage.ClientHelloLength; } else { c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; if (FirstXpacketLength <= TcpFramingHeader.TcpFramingHeaderLength) goto case TcpPhase.WaitingTcpFrame; } break; case TcpPhase.WaitingClientHello: if (pseudoTlsMessage.IsClientHello(e.Buffer, e.Offset) == false) return false; var x = EventArgsManager.Get(); x.CopyAddressesFrom(e); x.Count = PseudoTlsMessage.ServerHelloHelloDoneLength; pseudoTlsMessage.GetServerHelloHelloDoneBytes(x.Buffer, x.Offset); s.SendAsync(x); proccessed += c.BytesExpected; c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; break; case TcpPhase.WaitingTcpFrame: TcpFramingHeader tcpHeader; if (TcpFramingHeader.TryParse(e.Buffer, e.Offset, out tcpHeader) == false) return false; proccessed += c.BytesExpected; c.Phase = (tcpHeader.Type == TcpFrameType.ControlMessage) ? TcpPhase.WaitingTurnControlMessage : TcpPhase.WaitingTurnEndToEndData; c.BytesExpected = tcpHeader.Length; break; case TcpPhase.WaitingTurnEndToEndData: case TcpPhase.WaitingTurnControlMessage: if (e.BytesTransferred - proccessed < c.BytesExpected) if (c.Buffer.CopyTransferredFrom(e, proccessed + c.BytesExpected) == false) return false; e.Count -= proccessed; e.Offset += proccessed; e.BytesTransferred = c.BytesExpected; if (c.Phase == TcpPhase.WaitingTurnEndToEndData) TurnServer_PeerDataReceived(ref e); else TurnServer_TurnDataReceived(ref e); proccessed = e.BytesTransferred; c.Phase = TcpPhase.WaitingTcpFrame; c.BytesExpected = TcpFramingHeader.TcpFramingHeaderLength; break; default: throw new NotImplementedException(); } } } else throw new NotImplementedException(); return true; }
private void TurnServer_NewConnection(ServersManager <TurnConnection> s, TurnConnection c) { c.Phase = TcpPhase.WaitingFirstXpacket; c.BytesExpected = FirstXpacketLength; }
private void TurnServer_NewConnection(ServersManager<TurnConnection> s, TurnConnection c) { c.Phase = TcpPhase.WaitingFirstXpacket; c.BytesExpected = FirstXpacketLength; }