如何根据标题的值使Nginx重定向？ [英] How to make nginx redirect based on the value of a header?

问题描述

我正在Cloudflare代理后面托管一个网站，这意味着即使Cloudflare处理HTTP（端口80）和HTTPS（端口443）流量，对服务器的所有请求都通过端口80进行。

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包含了 X-Forwarded-Proto 标头，该标头设置为 http

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.

我想使用 X-Forwarded-Proto：http 标头指向我网站的SSL版本。如何使用Nginx配置实现此目标？

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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