Response Pseudo-Header Fields / 响应的伪首部字段

For HTTP/2 responses, a single :status pseudo-header field is defined that carries the HTTP status code field (see [RFC7231], Section 6). This pseudo-header field MUST be included in all responses; otherwise, the response is malformed (Section 8.1.2.6).

对于HTTP/2响应，只定义了一个:status伪首部字段，其携带了HTTP状态码(参见 [RFC7231]，第6章 )。所有的响应都必须包含该伪首部字段，否则，响应就是有缺陷的( 8.1.2.6节 )。

HTTP/2 does not define a way to carry the version or reason phrase that is included in an HTTP/1.1 status line.

HTTP/2没有定义携带HTTP/1.1状态行里包含的版本或者原因短语的方法。