private void AuthenticationCallback(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
return;
}
TcpHost host = asyncResult.AsyncState as TcpHost;
if (host == null)
{
return;
}
try
{
host.EndAuthenticationAsServer(asyncResult);
ReadFirstPacket(host);
}
catch (IOException)
{
// Somehow, the authentication failed... Close the connection
host.Close();
}
}
private void TcpClientAcceptCallback(IAsyncResult asyncResult)
{
if (_closing)
{
return;
}
DoBeginListenForClients();
try
{
TcpClient client = _tcpListener.EndAcceptTcpClient(asyncResult);
TcpHost host = new TcpHost(client);
if (_certificate != null)
{
host.BeginAuthenticationAsServer(_certificate, _configuration.SslProtocols, AuthenticationCallback, host);
}
else
{
ReadFirstPacket(host);
}
}
catch (IOException)
{
// TCP Listener may not be valid anymore
}
}
private void FirstPacketReadCallback(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
return;
}
TcpStateContainer asyncState = asyncResult.AsyncState as TcpStateContainer;
if (asyncState == null)
{
return;
}
TcpHost clientMachine = asyncState.Client;
byte[] data = asyncState.DataBuffer;
try
{
int numBytes = clientMachine.Stream.EndRead(asyncResult);
string stringData = Encoding.UTF8.GetString(data, 0, numBytes);
HttpPacket packet = HttpPacketBuilder.BuildPacket(stringData);
if (packet == null)
{
clientMachine.Close();
return;
}
Host serverMachineHost = packet.IsWebSocketPacket
? _configuration.WebSocketHost
: _configuration.HttpHost;
if (serverMachineHost != null && serverMachineHost.IsSpecified)
{
TcpHost serverMachine = TcpHost.ManufactureDefault(serverMachineHost.IpAddress,
serverMachineHost.Port);
serverMachine.Send(data, numBytes);
TcpRoute route = new TcpRoute(clientMachine, serverMachine);
_tcpConnectionManager.AddRoute(route);
}
else
{
clientMachine.Close();
}
}
catch (IOException)
{
}
}
private void ReadFirstPacket(TcpHost clientMachine)
{
byte[] data = new byte[4 * 1024];
try
{
TcpStateContainer state = new TcpStateContainer(clientMachine, data);
clientMachine.Stream.BeginRead(data, 0, data.Length, FirstPacketReadCallback, state);
}
catch (IOException)
{
clientMachine.Close();
}
}
void _clientMachine_Disconnected(TcpHost host)
{
Stop();
}
void _serverMachine_Disconnected(TcpHost host)
{
Stop();
}
void _clientMachine_DataAvailable(TcpHost host, byte[] data, int length)
{
_serverMachine.Send(data, length);
}
public TcpRoute(TcpHost clientMachine, TcpHost serverMachine)
{
_clientMachine = clientMachine;
_serverMachine = serverMachine;
}
private void TcpClientAcceptCallback(IAsyncResult asyncResult)
{
if (_closing)
return;
DoBeginListenForClients();
try
{
TcpClient client = _tcpListener.EndAcceptTcpClient(asyncResult);
TcpHost host = new TcpHost(client);
if (_certificate != null)
{
host.BeginAuthenticationAsServer(_certificate, _configuration.SslProtocols, AuthenticationCallback, host);
}
else
{
ReadFirstPacket(host);
}
}
catch (IOException)
{
// TCP Listener may not be valid anymore
}
}
private void ReadFirstPacket(TcpHost clientMachine)
{
byte[] data = new byte[4 * 1024];
try
{
TcpStateContainer state = new TcpStateContainer(clientMachine, data);
clientMachine.Stream.BeginRead(data, 0, data.Length, FirstPacketReadCallback, state);
}
catch (IOException)
{
clientMachine.Close();
}
}
void _serverMachine_Disconnected(TcpHost host)
{
Stop();
}
void _serverMachine_DataAvailable(TcpHost host, byte[] data, int length)
{
_clientMachine.Send(data, length);
}
void _clientMachine_Disconnected(TcpHost host)
{
Stop();
}
public TcpRoute(TcpHost clientMachine, TcpHost serverMachine)
{
_clientMachine = clientMachine;
_serverMachine = serverMachine;
}
