4×× Client Error

411 Length Required

The server refuses to accept the request without a defined Content-Length1.

The client MAY repeat the request if it adds a valid Content-Length header field containing the length of the message body in the request message.



411 Code References

  • .NET HTTP Status Enum HttpStatusCode.LengthRequired
  • Rust HTTP Status Constant http::StatusCode::LENGTH_REQUIRED
  • Rails HTTP Status Symbol :length_required
  • Go HTTP Status Constant http.StatusLengthRequired
  • Symfony HTTP Status Constant Response::HTTP_LENGTH_REQUIRED
  • Python2 HTTP Status Constant httplib.LENGTH_REQUIRED
  • Python3+ HTTP Status Constant http.client.LENGTH_REQUIRED
  • Python3.5+ HTTP Status Constant http.HTTPStatus.LENGTH_REQUIRED
HTTP Status Codes