Ruby on rails ActionCable-5.2.2使用JRUBY 9.2.0在nginx和puma中不工作时出现断管错误

该项目在nginx和passenger上运行良好，但在puma和nginx上不起作用。

以下是puma错误（到目前为止没有nginx错误）：

以下是到目前为止的配置：

nginx/sites\u enabled/sitetest.com

upstream puma {
  server unix:///tmp/my_app-puma.sock;
}

server {
    listen 80;
    server_name sitetest.com;


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

    try_files $uri/index.html $uri @puma;
    location @puma {
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;

      proxy_pass http://puma;
    }

    location /cable {
      proxy_pass http://puma;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "Upgrade";
    }

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

Production.rb

config.action_cable.url = 'wss://sitetest.com/cable'
config.action_cable.allowed_request_origins = [ 'https://sitetest.com' ]

Rails控制台日志：

 Started GET "/cable/" [WebSocket] for 103.10.28.154 at 2019-01-27 18:10:10 +0000
 Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
 WebSocket error occurred: Broken pipe -

它应该与 该链接建议将nio4r gem更新至2.2或更高版本，但actioncable 5.2.2使用nio4r 2.0。

 Started GET "/cable/" [WebSocket] for 103.10.28.154 at 2019-01-27 18:10:10 +0000
 Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
 WebSocket error occurred: Broken pipe -