simple client and server [closed]

Answer 1

/* insert why didnt you google this comment */

here's one

Answer 2

Beej's Guide to Network Programming - Using Internet Sockets is an excellent tutorial to understand sockets and connections. Plus it contains basic server-client sample applications.

Answer 3

Checkout the Paul Griffiths' Echo server. It's a simple echo server and client written in C. It's written using some unix headers though, and will not work on Windows.