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C#, sockets, Windows and port 21 : A simple Client-server using TCP; connection dies after transfer

Posted By:      Posted Date: November 16, 2010    Points: 0   Category :.NET Framework
 

Hello,

I have a thread on Stackoverflow here:

http://stackoverflow.com/questions/4118800/c-networking-server-hangs-after-receiving-more-than-65535-bytes

In short: 

In a very VERY simple Client-Server solution the TCP connection dies after sending 65535 bytes. This only happens when I am connected on port 21. If I change the server port to for example port 22 the connection does not die.

I am posting the simple code here for reference.

CLIENT:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Threading;
using System.Net.Sockets;

namespace tWorks.Samcom.PassSocketPoller
{
  public class PollerTest2
  {
    private IPAddress _sutiSocketIpAddr;
    private int _sutiSocketPort;

    private Thread pollerThread = null 

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