gistfile1.py

            # catch urllib3 exceptions and throw Requests exceptions
            try:
                # Send the request.
                r = conn.urlopen(
                    method=self.method,
                    url=self.path_url,
                    body=body,
                    headers=self.headers,
                    redirect=False,
                    assert_same_host=False,
                    preload_content=False,
                    decode_content=False,
                    retries=self.config.get('max_retries', 0),
                    timeout=self.timeout,
                )
                self.sent = True

            except MaxRetryError as e:
                raise ConnectionError(e)

            except (_SSLError, _HTTPError) as e:
                if isinstance(e, _SSLError):
                    raise SSLError(e)
                else:
                    raise Timeout('Request timed out.')