Instant messenger

[alakriti]

I would like to design my own instant messenger if anyone could help me with this please let me know. I don't want it to go through the ip protocol like icq i would like it to use udp so that it will go from the first client to the server then be routed to the client it was meant for so that no one can get the ip address of other clients computers.If anyone knows anything about udp and how i can set this up please contact me.

thank you for any help that you may be able to give.