【python 爬虫】使用代理的同时自定义opener报错

[派僧_hellowoah]

[Errno 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

以上是错误信息

import urllib2
import cookielib

proxy_support = urllib2.ProxyHandler({'http':'xxxxProxy'})
opener0 = urllib2.build_opener(proxy_support)
urllib2.install_opener(opener0)

# build request
url = 'http://passport.csdn.net/account/login' # cannot work on opener, but can work on urlopen
request = urllib2.Request(url)

cookie = cookielib.CookieJar()
chandler = urllib2.HTTPCookieProcessor(cookie)
print 'debug: ' , cookie, type(cookie),chandler, type(chandler)

opener = urllib2.build_opener(chandler)
urllib2.install_opener(opener)


try:
    response = opener.open(request) # fail
except urllib2.URLError, e:
    if hasattr(e, 'reason'):
        print e.reason
        
for item in cookie: # read from response = urllib2.urlopen(request)
    print 'name:', item.name
    print 'value:', item.value

使用自定义opener打开内网并没有出现任何问题
使用urllib2.urlopen() 打开外网也没有问题
自定义opener打开外网就有问题，
how to solve 啊？求大神帮帮我这个入门小白吧