httpproxy.py

import socket

def get_host_name(s):
    for line in s.splitlines():
        if line.startswith('Host:'):
            return line[6:]
           

def host_to_ip(s):
    return socket.getaddrinfo(s, 80)[0][4][0]

def main():
    s_srv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    s_srv.bind(('127.0.0.1', 80))
    s_srv.listen(1)
    try:
        try:
            while True:
                conn, addr = s_srv.accept()
                print '---connected---'
                data = conn.recv(1024)
                print data
                print '-----client------'
                # proxy client
                ip = host_to_ip(get_host_name(data))
                s_cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                print ip
                s_cli.connect((ip, 80))
                s_cli.send(data)
                content = s_cli.recv(10240)
                s_cli.close()

                print content
                print '-----proxy-------'
                conn.send(content)
                conn.close()
        finally:
            pass
    except KeyboardInterrupt:
        pass

if __name__ == '__main__':
    main()