这是我的代码。我无法让任何http代理正常工作，但socks代理（socks4/5）可以正常工作。有什么想法吗？尽管urllib2与代理一起使用没有问题，但我很困惑。谢谢。
代码:
1 import socks
2 import httplib2
3 import BeautifulSoup
4
5 httplib2.debuglevel=4
6
7 http = httplib2.Http(proxy_info = httplib2.ProxyInfo(3, '213.30.160.160', 80))
8
9 main_url = 'http://cuil.com'
10
11 response, content = http.request(main_url, 'GET')
12
13 #html_content = BeautifulSoup(content)
14
15 print response
输出：
connect: (cuil.com, 80)
Traceback (most recent call last):
File "test.py", line 11, in <module>
response, content = http.request(main_url, 'GET')
File "/home/kk/bin/pythonlib/httplib2/__init__.py", line 1129, in request
(response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
File "/home/kk/bin/pythonlib/httplib2/__init__.py", line 901, in _request
(response, content) = self._conn_request(conn, request_uri, method, body, headers)
File "/home/kk/bin/pythonlib/httplib2/__init__.py", line 862, in _conn_request
conn.request(method, request_uri, body, headers)
File "/usr/lib/python2.5/httplib.py", line 866, in request
self._send_request(method, url, body, headers)
File "/usr/lib/python2.5/httplib.py", line 889, in _send_request
self.endheaders()
File "/usr/lib/python2.5/httplib.py", line 860, in endheaders
self._send_output()
File "/usr/lib/python2.5/httplib.py", line 732, in _send_output
self.send(msg)
File "/usr/lib/python2.5/httplib.py", line 699, in send
self.connect()
File "/home/kk/bin/pythonlib/httplib2/__init__.py", line 740, in connect
self.sock.connect(sa)
File "/home/kk/bin/pythonlib/socks.py", line 383, in connect
self.__negotiatehttp(destpair[0],destpair[1])
File "/home/kk/bin/pythonlib/socks.py", line 349, in __negotiatehttp
raise HTTPError((statuscode,statusline[2]))
socks.HTTPError: (403, 'Forbidden')