transport.py 文件源码

def __init__(self, timeout=None, proxy=None, cacert=None, sessions=False):
        if (timeout is not None) and not self.supports_feature('timeout'):
            raise RuntimeError('timeout is not supported with urllib2 transport')
        if proxy:
            raise RuntimeError('proxy is not supported with urllib2 transport')
        if cacert:
            raise RuntimeError('cacert is not support with urllib2 transport')

        handlers = []

        if ((sys.version_info[0] == 2 and sys.version_info >= (2,7,9)) or
            (sys.version_info[0] == 3 and sys.version_info >= (3,2,0))):
            context = ssl.create_default_context()
            context.check_hostname = False
            context.verify_mode = ssl.CERT_NONE
            handlers.append(urllib2.HTTPSHandler(context=context))

        if sessions:
            handlers.append(urllib2.HTTPCookieProcessor(CookieJar()))

        opener = urllib2.build_opener(*handlers)
        self.request_opener = opener.open
        self._timeout = timeout