4×× 客户端错误

411 Length Required 长度要求

服务器拒绝接受没有定义 Content-Length^1的请求.

如果客户端在请求消息中添加了包含消息正文长度的有效 Content-Length 头字段，则客户端可以重复请求.

• ¹ Content-Length RFC7230 Section 3.3.2
• Source: RFC7231 Section 6.5.10

411 代码参考

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