Comments on: C# Chat Application Over Asynchronous UDP Sockets – Part 1, The Server

By: Alex

Alex — Sun, 25 Jul 2010 05:47:18 +0000

The only way i found a work around this, which by all means is far from perfect, is to tell server to listen again in the catch part of the code.

By: Dave

Dave — Sat, 24 Jul 2010 13:01:53 +0000

Thanks for pointing that out – I hadn’t noticed it. The code should definitely be made to handle that situation – maybe I’ll try and fix it and post an update. Did you find a workaround yourself?

By: Alex

Alex — Sat, 24 Jul 2010 03:19:25 +0000

Hey mate,
Great tutorial however, I found a problem with this code.

If you connect two clients to the server and kill one of them without it actually sending a logout notification, it destroys the serer socket.So when u try to send data from a client that’s still connected, it wont work.

By: Dave

Dave — Fri, 23 Jul 2010 10:42:51 +0000

Thanks, glad you found it useful.

By: Miliscent

Miliscent — Fri, 23 Jul 2010 02:19:45 +0000

Great article Dave. Not many articles focus on keeping sockets open and how to receive messages as they come through. Glad you did

By: takaza

takaza — Wed, 21 Jul 2010 01:35:15 +0000

thank for answer Dr.DAVE

By: Dave

Dave — Tue, 20 Jul 2010 09:37:45 +0000

To eliminate the server from your chat application will complicate things a bit. You need to do some research on peer-to-peer protocols to help you implement what you want. And also it is probably better if you start a new project from scratch instead of trying to modify this one to work for peer-to-peer.

By: takaza

takaza — Tue, 20 Jul 2010 00:10:47 +0000

Dear Mr.Dave
How to create chat (with udp) app without server .
client can chat broadcast to other client . Please help me!
because I develop app on window mobile i want app same your app.
thank a lot

By: Mohab

Mohab — Tue, 15 Jun 2010 08:59:26 +0000

sorry, i forgot to tell you that i am using C#….

By: Mohab

Mohab — Tue, 15 Jun 2010 08:58:35 +0000

Dear Dave,
actually i have a question. I am now developing a chatting application using the UDP protocol to send and receive messages. Now i want to send requests like the ordinary applications (eg. msn , yahoo messenger). For example if i want to send a request from my PC, i want in the next side to get a form including “you received a request from the ip …….. do you want to add this IP address to your list?”. So i cannot get the IP……. , and i cannot find a way to solve this out.
Do you have any recommendation, or even answer?