a question of networking

I am working on a small little messaging client and i was wonder what was the best approach. It will work like instant messaging. I need the server to be open to take any request that comes in from the client but still be open to send requests out.

any ideas?

thanks

There are some good article on networking here:

http://www.c-sharpcorner.com/Networking.asp

Specifically for your problem:

http://www.c-sharpcorner.com/Code/20...ynchSocket.asp

http://www.c-sharpcorner.com/Network...ForNETPL02.asp

http://www.c-sharpcorner.com/Network...asedChatAS.asp

http://www.c-sharpcorner.com/Network/SocketChatBF.asp

http://www.c-sharpcorner.com/interne...hat_server.asp

http://www.c-sharpcorner.com/internet/chat_server.asp

Hope this helps!