代理服务器-修改请求标头

Question

如何开发一个应用程序，该应用程序修改对服务器的所有请求，侦听本地端口，添加标头，然后在客户端和服务器之间传输？

Answer 1

Grab a copy of mentalis: http://www.mentalis.org/soft/projects/proxy/

It supports SOCKS4/5 as well as HTTP proxy. You can take a look at the source and figure it out - its not that hard.

[EDIT - and if you're specifically looking at implementing SOCKS, you should read the protocol definition: http://www.openssh.org/txt/socks4.protocol . Theres really only one message you need to implement in a basic proxy (CONNECT) and all you do is parse the target IP/port, open a socket and start relaying data to the incoming socket that sent the request.]