Python httplib 本地连接超时问题

Question

我有一个本地服务器，运行在6868端口上。技术上来说，它是一个用node.js和express搭建的小网站。这个网站其实只有一个'/push'的控制器，用来读取一些数据并把它写到控制台上（还有一些特定的、和问题无关的操作）。

当我使用curl的时候：

h100:~ eugenemirotin$ curl -i http://127.0.0.1:6868/push -d password=pwd
HTTP/1.1 200 OK
X-Powered-By: Express
Connection: keep-alive
Transfer-Encoding: chunked

node.js会像预期那样把信息写到控制台。

但是当我使用python和httplib的时候：

h100:~ eugenemirotin$ python
Python 2.7.1 (r271:86832, Jan  6 2011, 00:55:07) 
[GCC 4.2.1 (Apple Inc. build 5664)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import httplib, urllib
>>> params = {'password': 'pwd', 'type': 'msg', 'channel': 'chat', 'client_id': '', 'body': {'text': 'test test'}}
>>> params
{'body': {'text': 'test test'}, 'password': 'pwd', 'type': 'msg', 'client_id': '', 'channel': 'chat'}
>>> params = urllib.urlencode(params)
>>> params
'body=%7B%27text%27%3A+%27test+test%27%7D&password=pwd&type=msg&client_id=&channel=chat'
>>> conn = httplib.HTTPConnection('http://127.0.0.1:6868')
>>> conn.request("POST", "/push", params)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File    "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 941, in request
    self._send_request(method, url, body, headers)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 975, in _send_request
    self.endheaders(body)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 937, in endheaders
    self._send_output(message_body)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 797, in _send_output
    self.send(msg)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 759, in send
    self.connect()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 740, in connect
    self.timeout, self.source_address)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 571, in create_connection
    raise err
socket.error: [Errno 60] Operation timed out
>>> quit()

参数之间的差别并不重要——请求根本没有到达node.js服务器。

这是httplib的bug，还是我做错了什么？

Answer 1

你可以大大简化你的代码：

import urllib, urllib2
params = {'password': 'pwd', 'type': 'msg', 'channel': 'chat', 'client_id': '', 'body': {'text': 'test test'}}    
params = urllib.urlencode(params)
res = urllib2.urlopen('http://127.0.0.1:6868/push/', params)
data = res.read()
res.close()

Answer 2

把地址中的 http:// 去掉。

现在是：

conn = httplib.HTTPConnection('http://127.0.0.1:6868')

应该变成：

conn = httplib.HTTPConnection('127.0.0.1:6868')