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06.19.2008 at 01:51PM PDT, ID: 23500489
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8.2

How to listen on a single IP Address?

Asked by develc in C# Programming Language, .Net Application Servers, TCP/IP

Tags: ,

Hi,

I try to write a window form, that can connect to a server (here: a web server) and send information to it.

But I have problems by receiving data from the server.
I could listen on every incoming address (port 80) but that would mean that also streams of the web browser I use at that moment would be received.

So I just want to receive data from one special address.

But I get an error:
The selected IP address is not valid in this context.

Is there any way to listen on single addresses?
(the server is my own at home and firewall settings are made)Start Free Trial
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class Tranmission
 {
  private IPAddress targetAddress;
  private IPEndPoint endpoint;
  public Tranmission()
  {
   targetAddress = IPAddress.Parse("213.211.224.32");
   endpoint = new IPEndPoint(targetAddress, 80);
  }
 
  public string listen()
  {
   string result = null;
   TcpListener listener = new TcpListener(endpoint);
   try
   {
    listener.Start();
    TcpClient client = listener.AcceptTcpClient();
    StreamReader inStream = new StreamReader(client.GetStream());
    result = inStream.ReadToEnd();
    client.Close();
    listener.Stop();
   }
   catch (SocketException ex)
   {
    MessageBox.Show(ex.ToString());
   }
   catch (StackOverflowException ex)
   {
    MessageBox.Show(ex.ToString());
   }
   return result;
  }
 
  public bool sendText(string text)
  {
   int i=0;
   do
   {
    try
    {
     TcpClient client = new TcpClient("www.gruenzeuch.de", 80);
     StreamWriter outStream = new StreamWriter(client.GetStream());
     outStream.WriteLine(text);
     outStream.Close();
     return true;
    }
    catch (SocketException ex)
    {
     i++;
    }
   }while(i<10);
   return false;
  }
 }
 
 
[+][-]06.19.2008 at 01:52PM PDT, ID: 21826334

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[+][-]06.19.2008 at 02:07PM PDT, ID: 21826484

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[+][-]07.14.2008 at 07:38AM PDT, ID: 21998459

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About this solution

Zones: C# Programming Language, .Net Application Servers, TCP/IP
Tags: C#, The selected IP address is not valid in this context
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Solution Provided By: develc
Participating Experts: 1
Solution Grade: A
 
 
 
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