Simple HTTP proxy written as classroom exercise for ECE4436A at Western University.

Description of program:

A simple multi-threaded HTTP Proxy and cache. The main thread waits for incoming connections on port 8888 using accept(). Once a connection is made, a new thread is dispatched to handle the request. A binary-tree cache is used to store the result of GET requests. If a resource can be found in the cache, no requests to external servers are made. If the resource cannot be located, then a new outbound GET request is performed and the result is sent back to the client. Threading is achieved using POSIX threads, and a mutex is used to protect the cache from threading errors.

NOTE: No caps are placed on cache size, # of threads or # of open sockets.

This program has been tested on Mac OSX 10.8, and Ubuntu 12.04.

Compile with: gcc simplehttp.c -lpthread