httpclient.py 文件源码

def fetch(self, request, **kwargs):
        """Executes an HTTPRequest, returning an HTTPResponse.

        If an error occurs during the fetch, we raise an HTTPError.
        """
        if not isinstance(request, HTTPRequest):
           request = HTTPRequest(url=request, **kwargs)
        buffer = cStringIO.StringIO()
        headers = httputil.HTTPHeaders()
        try:
            _curl_setup_request(self._curl, request, buffer, headers)
            self._curl.perform()
            code = self._curl.getinfo(pycurl.HTTP_CODE)
            effective_url = self._curl.getinfo(pycurl.EFFECTIVE_URL)
            buffer.seek(0)
            response = HTTPResponse(
                request=request, code=code, headers=headers,
                buffer=buffer, effective_url=effective_url)
            if code < 200 or code >= 300:
                raise HTTPError(code, response=response)
            return response
        except pycurl.error, e:
            buffer.close()
            raise CurlError(*e)