request.authority

• <string>

请求权限伪头域。 因为 HTTP/2 允许请求设置 :authority 或 host，如果存在，则此值是从 req.headers[':authority'] 派生的。 否则，它是从 req.headers['host'] 派生的。

• <string>

The request authority pseudo header field. Because HTTP/2 allows requests to set either :authority or host, this value is derived from req.headers[':authority'] if present. Otherwise, it is derived from req.headers['host'].