public override void HandleSocksRequest(ISocksClient clientToHandle)
{
logger.Trace($"Received new client request from {((IPEndPoint)(clientToHandle.Client.RemoteEndPoint)).Address}");
var socks4Request = Socks4Request.From(clientToHandle);
if (socks4Request.Header.RequestType == Socks4RequestType.TcpIpConnection)
{
logger.Notice($"Request command is TCP/IP connection to:{socks4Request.IpAddress} on:{socks4Request.Port}");
var connectionTarget = new IPEndPoint(socks4Request.IpAddress, socks4Request.Port);
try
{
logger.Notice("Trying to connect");
clientToHandle.Connect(connectionTarget);
}
catch (SocketException e)
{
logger.Error($"Connection to {socks4Request.IpAddress} on port {socks4Request.Port} thrown an exception:{Environment.NewLine}{e.Message}");
CloseConnectionAndSendError(clientToHandle, (uint)SocksCore.Socks4ErrorCodes.Error);
return;
}
}
if (socks4Request.Header.RequestType == Socks4RequestType.PortBinding)
{
throw new NotImplementedException();
// TODO: add port binding functionality
}
CloseConnectionAndSendError(clientToHandle, (uint)SocksCore.Socks4ErrorCodes.Error);
}
public void BeginAcceptClients()
{
Task.Run(async() =>
{
while (true)
{
try
{
var ex = await listener.AcceptTcpClientAsync().ConfigureAwait(false);
var s = new TcpClientEx();
s.AttachToSocket(ex.Client);
//s.Client.SetupSocketTimeouts(new SocketSettings { NetworkClientKeepAliveInterval = 1000, NetworkClientKeepAliveTimeout = 1000 });
var remoteEndPoint = s.Client.RemoteEndPoint as IPEndPoint;
if (remoteEndPoint != null)
{
logger.Trace($"Accepted a new client from {remoteEndPoint.Address}");
}
logger.Notice($"Client connection accepted from {remoteEndPoint?.Address}:{remoteEndPoint?.Port}");
OnNewSocksClientConnected(s);
}
catch (Exception e)
{
logger.Error(e.Message);
}
}
});
}