Ping request UDP C# PocketPC

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From: Ben (benoit.rheaume_at_gmail.com)
Date: 03/10/05 

Date: 10 Mar 2005 15:22:10 -0800

Hello,

I'm writing an application which communicate by UDP protocol from a
PocketPC to a computer. I have to verify if the server (computer) is
still available, or when I'm trying to connect (UdpClient.Connect),
the application freezes. Since I can't catch any exception with the
Connect function, I would like to create a "ping request", using the
Socket class, which verify every x seconds if the server is available.

Here is a bit of my code :

  IPEndPoint endPoint = new
IPEndPoint(IPAddress.Parse("10.102.100.127"), 9000);
  EndPoint PingEndPoint = (EndPoint)endPoint;
  byte[] msg = new byte[1] {1};
                        
  ping = new Socket(AddressFamily.InterNetwork, SocketType.Dgram,
ProtocolType.Udp);
                        
  try
  {
    ping.SetSocketOption(SocketOptionLevel.Udp,
SocketOptionName.SendTimeout, 2000);
  }
  catch (SocketException se)
  {
    MessageBox.Show(se.ToString() + " " + se.ErrorCode);
  }

  try
  {
    ping.SendTo(msg, PingEndPoint);
  }
  catch (Exception so)
  {
    // Here it would tell me that the server is offline
    MessageBox.Show(so.ToString());
  }

I'm having a SocketException in the first try-catch block :

  An invalid argument was supplied 10022

Does anyone can tell me how to proceed correctly?
Thanks in advance...

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