http.py 文件源码

def _serialize_request(self, request):
    """Convert an HttpRequest object into a string.

    Args:
      request: HttpRequest, the request to serialize.

    Returns:
      The request as a string in application/http format.
    """
    # Construct status line
    parsed = urlparse(request.uri)
    request_line = urlunparse(
        ('', '', parsed.path, parsed.params, parsed.query, '')
        )
    status_line = request.method + ' ' + request_line + ' HTTP/1.1\n'
    major, minor = request.headers.get('content-type', 'application/json').split('/')
    msg = MIMENonMultipart(major, minor)
    headers = request.headers.copy()

    if request.http is not None and hasattr(request.http.request,
        'credentials'):
      request.http.request.credentials.apply(headers)

    # MIMENonMultipart adds its own Content-Type header.
    if 'content-type' in headers:
      del headers['content-type']

    for key, value in six.iteritems(headers):
      msg[key] = value
    msg['Host'] = parsed.netloc
    msg.set_unixfrom(None)

    if request.body is not None:
      msg.set_payload(request.body)
      msg['content-length'] = str(len(request.body))

    # Serialize the mime message.
    fp = StringIO()
    # maxheaderlen=0 means don't line wrap headers.
    g = Generator(fp, maxheaderlen=0)
    g.flatten(msg, unixfrom=False)
    body = fp.getvalue()

    return status_line + body