如何根据标头的值进行 nginx 重定向? [英] How to make nginx redirect based on the value of a header?

问题描述

我在 Cloudflare 代理后面托管一个网站，这意味着对我的服务器的所有请求都通过端口 80，即使 Cloudflare 处理 HTTP(端口 80)和 HTTPS(端口 443)流量.

I'm hosting a website behind a Cloudflare proxy, which means that all requests to my server are over port 80, even though Cloudflare handles HTTP (port 80) and HTTPS (port 443) traffic.

为了区分两者，Cloudflare 包含一个 X-Forwarded-Proto 标头，该标头根据用户的连接设置为http"或https".

To distinguish between the two, Cloudflare includes an X-Forwarded-Proto header which is set to "http" or "https" based on the user's connection.

我想将带有 X-Forwarded-Proto: http 标头的每个请求重定向到我网站的 SSL 版本.如何使用 nginx 配置实现此目的?

I would like to redirect every request with an X-Forwarded-Proto: http header to the SSL version of my site. How can I achieve this with an nginx configuration?

推荐答案

最简单的方法是使用 if 指令.如果有更好的方法，请告诉我，因为人们说 if 指令效率低下.Nginx 将标头中的破折号转换为下划线，因此 X-Forwarded-Proto 变为 $http_x_forwarded_proto.

The simplest way to do this is with an if directive. If there is a better way, please let me know, as people say the if directive is inefficient. Nginx converts dashes to underscores in headers, so X-Forwarded-Proto becomes $http_x_forwarded_proto.

server {
    listen 80;
    server_name example.com; # Replace this with your own hostname
    if ($http_x_forwarded_proto = "http") {
        return 301 https://example.com$request_uri;
    }

    # Rest of configuration goes here... 
}

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