server_proxy_select.py

import select
import socket
import sys
import urllib2

HOST = ''
PORT = 8888
backlog = 5
size = 1024

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind ((HOST, PORT))
server.listen(backlog)
input = [server, sys.stdin]
running = 1


def get_webpage(url):
 result = urllib2.urlopen(url).read()
 return result

while running:
 inputready, outputready, exceptready = select.select(input, [],[]) 
 
 for s in inputready:

 if s == server:
 client, address = server.accept()
 input.append(client)

 elif s == sys.stdin:
 junk = sys.stdin.readline()
 running = 0

 else:
 data = s.recv(size)
 if data:
 if "http://" in data:
 url = data.strip()
 data_to_client = get_webpage(url)
 s.send(data_to_client)
 else:
 s.close()
 input.remove(s)

server.close()