http - nginx如何处理 "OPTIONS *"请求？

Question

在我的环境中，我使用 perlbal 将请求重定向到 nginx。如果 verify_backend 开启。 perbal 将向 nginx 发送“OPTIONS *”请求，但 nginx 将其响应为错误请求。

根据 RFC2616 :

If the Request-URI is an asterisk (""), the OPTIONS request is intended to apply to the ?server in general rather than to a specific resource. Since a server's communication options typically depend on the resource, the "" request is only useful as a "ping" or "no-op" type of method; it does nothing beyond allowing the client to test the capabilities of the server. For example, this can be used to test a proxy for HTTP/1.1 compliance (or lack thereof).

我认为 perlbal 正在尝试发送这种请求，但 nginx 默认情况下无法处理。

当我尝试发送请求“OPTIONS * HTTP/1.0”时，我总是收到“HTTP 400 错误请求”:

127.0.0.1 - - [18/Feb/2013:03:55:47 +0000] "OPTIONS * HTTP/1.0" 400 172 "-" "-" "-"

但它适用于没有星号请求的“OPTIONS/HTTP/1.0”选项:

127.0.0.1 - - [18/Feb/2013:04:03:56 +0000] "OPTIONS / HTTP/1.0" 200 0 "-" "-" "-"

我如何配置 nginx 让它响应 http return 200 而不是 HTTP return 400 ？

Answer 1

我知道这是一种矫枉过正，但一种解决方案是将 HAProxy 放在它前面以仅捕获该 OPTIONS 请求，然后在 HAProxy 中构建您自己的响应:

location * {
    if ($request_method = OPTIONS ) {
        add_header Content-Length 0;
        add_header Content-Type text/plain;
        return 200;
    }
}