There are 1 repository under tcp-ip-illustrated topic.
A small tcp server working under Mono or .NET (4.0) and provides hooks for handling data exchange with clients (works under mono and .net). Behaviour/protocol/reaction could be specified via custom C# script.
I'm learning network programming in C/C++ with using of multiplexing, multiprocessing or multithreading features available in Debian (and most Linux based OS).
Computer Networking Top-Down Approach, 7th & TCP/IP Illustrated Volume 1, 2nd