Rails ActionCable生产

Question

我有一个actioncable应用程序，在开发它运行正常，但在Amazon Web Service上部署到生产时。我有这个问题

WebSocket与＆＃39; ws：//www.mydomain.com/cable'失败：框架标题无效

我的nginx配置文件

upstream my_app {
    server unix:///var/run/puma/my_app.sock;
  }
  server {
   listen 80;
   server_name www.mydomain.com;

   access_log /var/log/nginx/access.log;
   error_log /var/log/nginx/error.log;
   root /var/app/current/public;

   location / {
    try_files $uri @ruby;
   }

   location @ruby {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://my_app;
   }

   location /cable {
    proxy_pass http://my_app;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
   }
  }

Cable.yml

development: adapter: redis test: adapter: redis production: adapter: redis url: <%= ENV['REDIS_URL'] %>

enviroments / production.eb

config.action_cable.url = 'ws://www.mydomain.com/cable'

如果有人可以帮助我