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CUSTOM PROXY
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Proxy for HTTP/1.0 standard protocol 

RFC: datatracker.ietf.org/doc/html/rfc1945
RES: cs.princeton.edu/courses/archive/spr13/cos461/assignments-proxy.html
RES: Beej's Guide to Network Programming - Using Internet Sockets
RES: en.wikipedia.org/wiki/Proxy_server
RES: TCP/IP sockets in C - Practical guide for programmers 2nd edition