http_urllib3.py 文件源码

def perform_request(self, method, url, params=None, body=None, timeout=None, ignore=()):
        url = self.url_prefix + url
        if params:
            url = '%s?%s' % (url, urlencode(params))
        full_url = self.host + url

        start = time.time()
        try:
            kw = {}
            if timeout:
                kw['timeout'] = timeout

            # in python2 we need to make sure the url and method are not
            # unicode. Otherwise the body will be decoded into unicode too and
            # that will fail (#133, #201).
            if not isinstance(url, str):
                url = url.encode('utf-8')
            if not isinstance(method, str):
                method = method.encode('utf-8')

            response = self.pool.urlopen(method, url, body, retries=False, headers=self.headers, **kw)
            duration = time.time() - start
            raw_data = response.data.decode('utf-8')
        except UrllibSSLError as e:
            self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
            raise SSLError('N/A', str(e), e)
        except ReadTimeoutError as e:
            self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
            raise ConnectionTimeout('TIMEOUT', str(e), e)
        except Exception as e:
            self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
            raise ConnectionError('N/A', str(e), e)

        if not (200 <= response.status < 300) and response.status not in ignore:
            self.log_request_fail(method, url, body, duration, response.status)
            self._raise_error(response.status, raw_data)

        self.log_request_success(method, full_url, url, body, response.status,
            raw_data, duration)

        return response.status, response.getheaders(), raw_data