Concurrency with threadpool

http-proxy v2.0
This versions features include:

• a threadpool of 20 threads
• a cache of web objects
• a logger thread for logging capabilites

Concurrency without threadpools

http-proxy v1.0
An HTTP proxy server that allows for multiple concurrent connections. Written in C using the stdlib and a library provided by the authors of Computer Systems, A Programmers Perspective.
It creates a new thread for each incoming connection.