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POTCP Server in C#
 

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  1. POTCP Server in C#
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    <p>Iam just a beginner student socket programming.I tried a simple code from "TCP/IP Sockets in C# Practical Guide for Programmers" pdf book but it doesn't work.I compiled it in visual studio 2010.Please help me what is wrong and here is the complete code</p> <pre><code>using System; // For Console, Int32, ArgumentException, Environment using System.Net; // For IPAddress using System.Net.Sockets; // For TcpListener, TcpClient class TcpEchoServer { private const int BUFSIZE = 32; // Size of receive buffer static void Main(string[] args) { if (args.Length &gt; 1) // Test for correct # of args throw new ArgumentException("Parameters: [&lt;Port&gt;]"); int servPort = (args.Length == 1) ? Int32.Parse(args[0]): 7; TcpListener listener = null; try { // Create a TCPListener to accept client connections listener = new TcpListener(IPAddress.Any, servPort); listener.Start(); } catch (SocketException se) { Console.WriteLine(se.ErrorCode + ": " + se.Message); Environment.Exit(se.ErrorCode); } byte[] rcvBuffer = new byte[BUFSIZE]; // Receive buffer int bytesRcvd; // Received byte count for (;;) { // Run forever, accepting and servicing connections TcpClient client = null; NetworkStream netStream = null; try { client = listener.AcceptTcpClient(); // Get client connection netStream = client.GetStream(); Console.Write("Handling client - "); // Receive until client closes connection, indicated by 0 return value int totalBytesEchoed = 0; while ((bytesRcvd = netStream.Read(rcvBuffer, 0, rcvBuffer.Length)) &gt; 0) { netStream.Write(rcvBuffer, 0, bytesRcvd); totalBytesEchoed += bytesRcvd; } Console.WriteLine("echoed {0} bytes.", totalBytesEchoed); // Close the stream and socket. We are done with this client! netStream.Close(); client.Close(); } catch (Exception e) { Console.WriteLine(e.Message); netStream.Close(); } } } } </code></pre> <p><strong>From Comment:</strong></p> <p>I have program for client also to connect with this server program. Actual problem is this server program does not run. At line 16-22 there is the code try</p> <pre><code>{ // Create a TCPListener to accept client connections listener = new TcpListener(IPAddress.Any, servPort); listener.Start(); } catch (SocketException se) { Console.WriteLine(se.ErrorCode + ": " + se.Message); Environment.Exit(se.ErrorCode); } </code></pre> <p>and program show the error code and displays message like this</p> <blockquote> <p>10048:Only one usage of each socket address is normally permitted</p> </blockquote> <p>and program close. What to do?</p>
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    1. USDinesh Subedi
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    1. CO_"it doesn't work"_ => What doesn't work? People won't bother to read your code (quite long btw) if you don't provide details on what is wrong, what you have tried...
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      1. USOtiel
    2. COHow does it not work ?
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      1. USOrn Kristjansson
    3. CO"It doesn't work" is not a very good problem report.
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      1. POTCP Server in C#
      1. USHenk Holterman
 

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