Ruby on rails 轨道&x2B；ActionCable&x2B；Nginx+；独角兽设置

我一直在尝试使用Nginx+Unicorn在Ubuntu中部署Rails 5+ActionCable应用程序

正常的http请求工作正常，但Websockets连接被拒绝，我想这是我的Nginx的一个问题

我一直在想谷歌，发现了类似的问题和解决方案，但似乎什么都不起作用：

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我甚至尝试为nginx和websockets调整NodeJS设置

我得到的错误是“ws://mydomain.com/cable”失败：WebSocket握手期间出错：404

upstream app_server {
   server unix:/var/run/unicorn.sock fail_timeout=0;
}

server {
   listen   80;
   root /home/rails/rails_project/public;
   server_name _;
   index index.htm index.html;

   location / {
        try_files $uri/index.html $uri.html $uri @app;
}

location ~* ^.+\.(jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|pdf|ppt|txt|ta$
                try_files $uri @app;
        }

 location @app {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_pass http://app_server;
}
location /cable {
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_http_version 1.1;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_pass http://app_server;
}

}

提前感谢

修复了我的设置中类似的错误（actioncable/cable中的404）

location /cable {
    proxy_pass http://unix:/home/app/shared/tmp/puma/socket;
    proxy_http_version 1.1;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Host $host:$server_port;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_read_timeout 86400;
}