client server console app with cmd library

[kaklis at gmail.com]

Hi to all,
i need some hints about a console application i' m trying.
I want to make it act as a client and as a server at a same time.
And since it is a console application i' m using cmd library.
I want something that works like asterisk. while working with my app
i want to listen for incoming requests, that they appear automatically
at my console.
Any design considerations?
Do i have to use threads?
Please i want your advice.
Any examples somewhere?

Thanks in advance!
Antonis