Content-Length

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Content-Length 是一个实体消息首部,用来指明发送给接收方的消息主体的大小,即用十进制数字表示的八位元组的数目。

Header type Entity header
Forbidden header name yes

语法

Content-Length: <length>

指令

<length>

消息的长度,用十进制数字表示的八位字节的数目。

规范

Specification
HTTP Semantics
# field.content-length

浏览器兼容性

BCD tables only load in the browser

参见