Basic peer-to-peer node implemented in C with pthreads. The type of socket used is SOCK_STREAM for a reliable, two-way communication using TCP. The server can only handle one client at a time. Adding select() to the server function is the ideal way to achieve single-threaded, synchronous communication with multiple clients (check out p2p_multiclient.c).

To build: gcc -Wall -Werror -o p2p p2p.c -lpthread