[RESOLVED] client/server messaging

I'm trying to find a VB.NET sample program for multi-threaded TCP messaging. I have an application that will be set up on about 30 processing lines in 4 different plants. They are currently communicating with the processing equipment and our business SQL server. I'd like to write a server application that communicates with these remote applications to monitor certain equipment parameters and states. The server would also be able to send messages to the clients to perform some maintenance activities.

I'm assuming the server is going to listen on a port at the server. Clients will connect to the server when started and pass messages back and forth as required.

I searched on this forum and found lots of posts but didn't find a sample program. My search was for chat programs since that seemed to be the closest to what I was looking for.

Any help finding a sample would be greatly appreciated.

Thanks.

Follow the CodeBank link in my signature and check out my Asynchronous TCP thread.

Thanks!