Specifications: http://studenti.ing.unipi.it/~s470694/reti-informatiche/Progetto-2012.pdf
Compile using make:
$ make
this will generate client & server binaries.
First, run the server by typing
$ ./tris_server <host> <listening_port>
then, in another console,
$ ./tris_client <server_ip> <server_port>
The list of available commands is shown when you type !help at the prompt.