Websocket 握手期间发生 Rails ActionCable 错误

我正在尝试使用 Rails 5 ActionCable 构建一个消息应用程序，但我在 JS 控制台中收到上述错误。

ws://localhost:3002/cable' failed: Error during WebSocket handshake: Unexpected response code: 404

我正在使用 Redis 和 Puma gems。

我有一个正在运行的 Redis 服务器7937:M 24 Jul 18:20:53.379 * The server is now ready to accept connections on port 6379

我使用 Puma 启动 Rails 服务器：rails s Puma -p 3002（这还需要吗？）

config/cable.yml看起来像这样...

development:
  adapter: redis
  url: redis://localhost:6379

test:
  adapter: async

production:
  adapter: redis
  url: redis://localhost:6379/1

当我进入rails c我执行广播：

2.2.4 :003 > ActionCable.server.broadcast("messages:1", text: "test")
[ActionCable] Broadcasting to messages:1: {:text=>"test"}
 => 0

...你可以看到它返回0，所以失败了。控制台错误消息看起来像......

WebSocket connection to 'ws://localhost:3002/cable' failed: WebSocket is closed before the connection is established.

对于 NGINX，我完全是个初学者。这是 NGINX 问题吗？如果是这样，我该如何解决？我需要重新配置我的nginx.conf文件输入/usr/local/etc/nginx/？目前看起来是这样的......

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       8080;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
    include servers/*;
}

SOLUTION

确保你有

<%= action_cable_meta_tag %>里面application.html.erb

Also,

config.action_cable.url = "ws://localhost:3000/cable" inside config/environments/development.rb