AcceptTcpClient Blocking the rest of the code

Question

Hi, I have this code here

if (Main && List && Admin)
{
Console.WriteLine("[SERVER]" + "Waiting to connect");
TcpClient ClientList = ListServer.AcceptTcpClient();
if (ClientList.Connected)
{
    Console.ForegroundColor = ConsoleColor.Green;
    Console.WriteLine(ListMessage + "CONECTED !");
}
NextCode();
      }
  }

 private void NextCode()
{
//CODE
}

When you come to the line: TcpClient ClientList = ListServer.AcceptTcpClient();. The program waits for a connection. How do I stop waiting in the background and further lines of code to perform?

I think it is not good to use methods such as "NextCode" since this reminds me of "spaghetti code." To make a program stop waiting for a particular line, you can use async methods in .NET. — user1477388, Feb 26 '14 at 16:26
This is a possible duplicate of this: http://stackoverflow.com/questions/12231789/cancel-blocking-accepttcpclient-call — Phil_12d3, Feb 26 '14 at 16:27
If not a duplicate, the solution is most certainly contained there. — Phil_12d3, Feb 28 '14 at 12:38

score 3 · Answer 1 · answered Feb 26 '14 at 16:28

3

AcceptTcpClient is a blocking call. You will either need to move your connection listening work in to a separate thread, or use Asyc method calls to accept connections without blocking.

answered Feb 26 '14 at 16:28

Bradley Uffner

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3
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score 0 · Answer 2 · answered Feb 26 '14 at 16:33

use a Background Worker:

//define this outside
TcpClient ClientList;

//....
    if (Main && List && Admin)
    {
        Console.WriteLine("[SERVER]" + "Waiting to connect");
        bw.RunWorkerAsync();

        NextCode();
    }

}

private void NextCode()
{
    //CODE
}

private void bw_DoWork(object sender, DoWorkEventArgs e)
{
    ClientList = ListServer.AcceptTcpClient();
}

private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    if (ClientList.Connected)
    {
        Console.ForegroundColor = ConsoleColor.Green;
        Console.WriteLine(ListMessage + "CONECTED !");
    }
}

AcceptTcpClient Blocking the rest of the code

2 Answers2