def urlopen()

in aliyun-python-sdk-core/aliyunsdkcore/vendored/requests/packages/urllib3/poolmanager.py [0:0]

• 36 lines of code
• 15 McCabe index (conditional complexity)

    def urlopen(self, method, url, redirect=True, **kw):
        """
        Same as :meth:`urllib3.connectionpool.HTTPConnectionPool.urlopen`
        with custom cross-host redirect logic and only sends the request-uri
        portion of the ``url``.

        The given ``url`` parameter must be absolute, such that an appropriate
        :class:`urllib3.connectionpool.ConnectionPool` can be chosen for it.
        """
        u = parse_url(url)
        conn = self.connection_from_host(u.host, port=u.port, scheme=u.scheme)

        kw['assert_same_host'] = False
        kw['redirect'] = False

        if 'headers' not in kw:
            kw['headers'] = self.headers.copy()

        if self.proxy is not None and u.scheme == "http":
            response = conn.urlopen(method, url, **kw)
        else:
            response = conn.urlopen(method, u.request_uri, **kw)

        redirect_location = redirect and response.get_redirect_location()
        if not redirect_location:
            return response

        # Support relative URLs for redirecting.
        redirect_location = urljoin(url, redirect_location)

        # RFC 7231, Section 6.4.4
        if response.status == 303:
            method = 'GET'

        retries = kw.get('retries')
        if not isinstance(retries, Retry):
            retries = Retry.from_int(retries, redirect=redirect)

        # Strip headers marked as unsafe to forward to the redirected location.
        # Check remove_headers_on_redirect to avoid a potential network call within
        # conn.is_same_host() which may use socket.gethostbyname() in the future.
        if (retries.remove_headers_on_redirect
                and not conn.is_same_host(redirect_location)):
            headers = list(six.iterkeys(kw['headers']))
            for header in headers:
                if header.lower() in retries.remove_headers_on_redirect:
                    kw['headers'].pop(header, None)

        try:
            retries = retries.increment(method, url, response=response, _pool=conn)
        except MaxRetryError:
            if retries.raise_on_redirect:
                raise
            return response

        kw['retries'] = retries
        kw['redirect'] = redirect

        log.info("Redirecting %s -> %s", url, redirect_location)
        return self.urlopen(method, redirect_location, **kw)