在nginx中处理OPTIONS请求 [英] Handling OPTIONS request in nginx

问题描述

我们目前正在使用HAProxy作为负载均衡器，它会定期向下游机箱发出请求，以确保它们使用OPTIONS请求确实存在：

We're using HAProxy as a load balancer at the moment, and it regularly makes requests to the downstream boxes to make sure they're alive using an OPTIONS request:

OPTIONS /index.html HTTP / 1.0

OPTIONS /index.html HTTP/1.0

我正在努力将nginx设置为带缓存的反向代理（使用ncache）。出于某种原因，当OPTIONS请求进入时，nginx返回405：

I'm working with getting nginx set up as a reverse proxy with caching (using ncache). For some reason, nginx is returning a 405 when an OPTIONS request comes in:

192.168.1.10 - - [22 / Oct / 2008： 16:36:21 -0700]选项/index.html HTTP / 1.0405 325 - - 192.168.1.10

192.168.1.10 - - [22/Oct/2008:16:36:21 -0700] "OPTIONS /index.html HTTP/1.0" 405 325 "-" "-" 192.168.1.10

直接点击下游网络服务器时，我收到了200响应。我的问题是：如何让nginx将响应传递给HAProxy，或者，如何在nginx.conf中设置响应？

When hitting the downstream webserver directly, I get a proper 200 response. My question is: how to you make nginx pass that response along to HAProxy, or, how can I set the response in the nginx.conf?

推荐答案

我可能迟到了，但我遇到了同样的问题，并找到了两个解决方案。

I'm probably late, but I had the same problem, and found two solutions to it.

首先是欺骗Nginx实际上是405状态一个200 OK，然后proxy_pass它到你的HAProxy像这样：

First is tricking Nginx that a 405 status is actually a 200 OK and then proxy_pass it to your HAProxy like this:

error_page 405 =200 @405;
location @405 {
    root /;
    proxy_pass http://yourproxy:8080;
}

第二个解决方案是捕获OPTIONS请求并为那些建立响应请求：

The second solution is just to catch the OPTIONS request and build a response for those requests:

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

选择哪一种更适合你。

我是在博文中写的/ a>在哪里可以找到更多详细信息。

I wrote this in a blog post where you can find more details.

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