对于 HTTP OPTIONS 请求，获得响应 body 有什么意义吗？

Question

目前，如果我回复选项请求，则无需发送任何我知道的回复body，只需headers 表明我将接受什么

<?php
    header("Access-Control-Allow-Origin: example.com");

    header("Access-Control-Allow-Methods: OPTIONS, GET, POST, PUT");
    header("Access-Control-Allow-Headers: API-Key, Query-Sequence");
    header("Access-Control-Expose-Headers: Query-Sequence");

    if($_SERVER['REQUEST_METHOD'] == 'OPTIONS'){
        die;
    }
    //....

但是 body 会被用于某些事情吗？

Answer 1

来自the specification：

The response body, if any, SHOULD also include information about the communication options. The format for such a body is not defined by this specification, but might be defined by future extensions to HTTP.

您可以包含它，如果您这样做，它可能应该是对允许的选项的简单英语描述。不过这样做没有多大意义。

对于 HTTP OPTIONS 请求，获得响应 body 有什么意义吗？

For an HTTP OPTIONS request, is there any point in having a response body?

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