ForwardState StartRemote(Socket local_socket, IPEndPoint local, IPEndPoint remote)
{
if (_remote_socket != null)
{
_remote_socket.Close();
_remote_socket = null;
}
if (_remote_socket == null)
{
_remote_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
}
Thread.Sleep(100);
_remote_socket.Connect(remote);
Debug.WriteLine(">>>>forward remote connected");
var state = new ForwardState()
{
LocalEndPoint = local,
RemoteEndPoint = remote,
LocalSocket = local_socket,
RemoteSocket = _remote_socket
};
return(state);
}
private static void LocalDataRecive(IAsyncResult result)
{
ForwardState state = null;
try
{
state = (ForwardState)result.AsyncState;
var br = state.LocalSocket.EndReceive(result);
if (br > 0)
{
try
{
Thread.Sleep(1);
if (state.RemoteSocket != null)
{
state.RemoteSocket.BeginSend(state.LocalBuffer, 0, br, SocketFlags.None, RemoteDataSend, state);
}
Debug.Write($">>>>{state.LocalEndPoint.Port} => {state.RemoteEndPoint.Port}");
}
catch (Exception ex)
{
Debug.WriteLine($"####remote send error : {ex.Message}");
}
state.LocalBuffer = new byte[state.LocalBuffer.Length];
state.LocalSocket.BeginReceive(state.LocalBuffer, 0, state.LocalBuffer.Length, 0, LocalDataRecive, state);
}
}
catch (Exception ex)
{
Debug.WriteLine($"####local recive error : {ex.Message}");
}
}
private void StartRemoteRecive(ForwardState state)
{
_remote_socket.BeginReceive(state.RemoteBuffer, 0, state.RemoteBuffer.Length, 0, RemoteDataRecive, state);
}
private void StartLocalRecive(ForwardState state)
{
_local_socket.BeginReceive(state.LocalBuffer, 0, state.LocalBuffer.Length, 0, LocalDataRecive, state);
}