[W-Unit]

Hi all,
So I'm trying to program a pretty basic (console) server in C# as well as an equally simple GUI client program.
Here's the weird thing. When I use telnet to connect to my server for testing, I can freely disconnect or close out of telnet without causing any problems.
However, when I try using the GUI to connect, I get a System.Net.Sockets.SocketException if I close out of the GUI. The exception is as follows:

Unhandled Exception: System.Net.Sockets.SocketException: An existing connection
was forcibly closed by the remote host
   at System.Net.Sockets.Socket.Receive(Byte[] buffer)
   at F_2_fish_Communicator_Server.Server.listenForInput(Object sender)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, C
ontextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart(Object obj)

...So naturally I try to fix this problem using a try/catch statement. After telling it to catch a SocketException didn't work, I changed it to catch any Exception, and it still doesn't seem to do so.

int length = -1;
try
{
	length = fromClient.Receive(sData);
}
catch (Exception e)
{
	Console.WriteLine("Exception: {0}", e.ToString());
}
thisLine += Encoding.ASCII.GetString(sData, 0, length);

Again, this exception ONLY occurs when using the GUI client to connect; telnet does not cause the "catch" block to execute or anything of the sort.

Any ideas as to why this is happening and/or how to fix it are greatly appreciated.

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Hi W-Unit,

From what I can see, you're getting the exception because you're closing the GUI mid-connection. I'm not very familiar with C#, but I think you have to get the program to automatically close the connection if the GUI is closed?

[mpascal]

Hi W-Unit,

From what I can see, you're getting the exception because you're closing the GUI mid-connection. I'm not very familiar with C#, but I think you have to get the program to automatically close the connection if the GUI is closed?