上一篇文章中讲到的方法，在某些时候不好用。比如我在本机调试链接到facebook的程序，开始没有问题，后来突然就不工作了。得到如下提示:

经检查发现出现大的问题仍然是DNS解析。而我本机测试twitter没有问题的原因，也是因为其DNS未被污染。开始时Facebook正常估计也是因为凑巧当时其并未受到污染所致。

经过搜索罚下如下方案，经测试工作正常：

 

至此上文提到的解决django-social-auth的补丁，最终应该是：

def dsa_urlopen(*args, **kwargs):    """Like urllib2.urlopen but sets a timeout defined by    SOCIAL_AUTH_URLOPEN_TIMEOUT setting if defined (and not already in    kwargs)."""    timeout = setting('SOCIAL_AUTH_URLOPEN_TIMEOUT')    if timeout and 'timeout' not in kwargs:        kwargs['timeout'] = timeout    import socks    import socket    socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5, "127.0.0.1", 1080)    socket.socket = socks.socksocket    def _create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,source_address=None):        msg = "getaddrinfo returns an empty list"        host, port = address        if len(address) == 2 and isinstance(address,(list,tuple)) and isinstance(address[0],unicode):            address = (str(address[0]),address[1])        for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):            af, socktype, proto, canonname, sa = res            sock = None            try:                sock = socket.socket(af, socktype, proto)                if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:                    sock.settimeout(timeout)                sock.connect(address)                return sock            except socket.error, msg:                if sock is not None:                    sock.close()        raise socket.error, msg    socket.create_connection = _create_connection    # Magic!    def getaddrinfo(*args):        return [(socket.AF_INET, socket.SOCK_STREAM, 6, '', (args[0], args[1]))]    socket.getaddrinfo = getaddrinfo    return urlopen(*args, **kwargs)