Nginx无法将请求协议正确转发到上游 [英] Nginx can not forward the request protocol correctly to upstream

问题描述

我有一个Rails 4 beta版的网站.它在Nginx + Unicorn上运行.我希望nginx将请求协议('http'或'https')转发给独角兽，以便我可以使用它们.但是我无法使其工作.

I have a website in rails 4 beta. It is running on Nginx + Unicorn. I want nginx to forward the request protocol ( 'http' or 'https' ) to unicorn so that I can work with them. However I am not able to make it work.

我在视图文件中放入了<%= request.ssl? %>和<%= request.protocol %>进行测试.我的nginx服务器配置文件如下:

I put <%= request.ssl? %> and <%= request.protocol %> in the view file for testing. My nginx server config file is as following:

upstream unicorn {
  server unix:/tmp/unicorn.blog.sock fail_timeout=0;
}

server {
  listen 80;
  listen 443;
  server_name example.com;
  root /home/example;

  ssl on;
  ssl_certificate /etc/nginx/ssl/server.crt;
  ssl_certificate_key /etc/nginx/ssl/server.key;

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  try_files $uri/index.html $uri @unicorn;

  location @unicorn {
    proxy_set_header X-Forwarded-Proto https;  # <--- Line 1
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Ssl on;       # <--- Line 2
    proxy_redirect off;
    proxy_pass http://unicorn;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}

我发现我标记的2行不正确.这是我的测试结果:

I found that the 2 lines I marked are not acting right. Here is my test result:

=================

=================

第1行已注释掉，第2行也已注释掉:

Line 1 commented out, Line 2 commented out too :

访问 http://the.url

<%= request.ssl? %>     : false
<%= request.protocol %> : http

访问 https://the.url

<%= request.ssl? %>     : false
<%= request.protocol %> : http

=================

=================

第1行已被注释掉，第2行不是OR 第2行已注释掉，第1行不是 都没有评论

Line 1 commented out, Line 2 is not OR Line 2 commented out, Line 1 is not OR Neither is comments out

访问 http://the.url

<%= request.ssl? %>     : true
<%= request.protocol %> : https

访问 https://the.url

<%= request.ssl? %>     : true
<%= request.protocol %> : https

=================

=================

也就是说，如果出现这两行之一，则无论实际协议是什么，nginx都会将"https"转发到上游.但是，如果这两行都没有出现，则无论实际协议是什么，nginx都会将"http"转发到上游.

That is to say, if one of those two lines appears, nginx forward "https" to upstream no matter what the actual protocol is. But if none of those two lines appears, nginx forward "http" to upstream no matter what the actual protocol is.

请有人告诉我如何编写nginx配置文件，以便它可以正确转发协议吗?非常感谢你.

Please can someone tell me how to write the nginx config file so that it can forward the protocol correctly? Thank you very much.

推荐答案

尝试:

proxy_set_header X-Forwarded-Proto $scheme;

OR

server {
    Listen 80
    ...
}
server {
    Listen 443
    ...
    location @unicorn {
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Forwarded-Ssl on;
    }
}

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