Python，为基于套接字的应用程序实现代理支持（不是 urllib2）
我有点困惑：我有一个简单的信使客户端程序（纯Python，套接字），我想添加代理支持（http/s，socks），但是我对如何去做有点困惑。我假设套接字级别的连接将完成到代理服务器，此时标头应包含 CONNECT + 目标 IP（聊天服务器的）和身份验证（如果代理需要如此），但是其余的就是有点超出我的范围了。如何处理后续连接，特别是读/写等...
是否有关于 Python 中基于套接字（tcp）编程的代理支持实现的指南？
谢谢
I am little stumped: I have a simple messenger client program (pure python, sockets), and I wanted to add proxy support (http/s, socks), however I am a little confused on how to go about it. I am assuming that the connection on the socket level will be done to the proxy server, at which point the headers should contain a CONNECT + destination IP (of the chat server) and authentication, (if proxy requires so), however the rest is a little beyond me. How is the subsequent connection handled, specifically the reading/writing, etc...
Are there any guides on proxy support implementation for socket based (tcp) programming in Python?
Thank you
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也许使用类似 SocksiPy 的东西，它会为您完成所有协议详细信息，并让您通过 SOCKS 代理进行连接没有它你会吗？
Maybe use something like SocksiPy which does all the protocol details for you and would let you connect through a SOCKS proxy as you would without it?
这非常简单 - 发送 HTTP 请求后： CONNECT example.com:1234 HTTP/1.0\r\nHost: example.com:1234\r\n\r\n\r\n，服务器响应
HTTP/1.0 200 Connectionbuilt\r\n\r\n然后（双行结束后）您可以像在没有代理的情况下与 example.com 端口 1234 进行通信一样进行通信（据我所知，您已经完成了客户端-服务器通信部分）。It is pretty simple - after you send the HTTP request:
CONNECT example.com:1234 HTTP/1.0\r\nHost: example.com:1234\r\n<additional headers incl. authentication>\r\n\r\n, the server responds withHTTP/1.0 200 Connection established\r\n\r\nand then (after the double line ends) you can communicate just as you would communicate with example.com port 1234 without the proxy (as I understand you already have the client-server communication part done).看看 stunnel。
Have a look at stunnel.