在websocket握手过程中出现Rails ActionCable错误

Question

我正试图用Rails 5 ActionCable构建一个消息应用程序，但在JS控制台中收到了上述错误。

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

我用的是Redis和彪马宝石。

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

我用Puma:rails s Puma -p 3002启动Rails服务器（这是必需的吗？）

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

当我输入rails c并执行广播时：

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

您可以看到它返回0，所以它失败了。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.

说到NGINX，我完全是个初学者。这是NGINX的问题吗？如果是，我该如何解决？是否在/usr/local/etc/nginx/中重新配置nginx.conf文件？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/*;
}

Answer 1

解决方案

确保你有

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

此外，

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

Answer 2

将其放入您的环境配置文件中

config.action_cable.allowed_request_origins = [/http://*/, /https://*/]

Answer 3

当我在中有一个尾随斜杠时，我得到了这个错误

config.action_cable.allowed_request_origins = ['https://dev-fuud8f6.firebaseapp.com/']

并删除它为我修复了问题（播种在下面）

config.action_cable.allowed_request_origins = ['https://dev-fuud8f6.firebaseapp.com']

我使用参考发现了这个错误

curl -v 'https://your_site.com/cable' -H 'Origin: https://your_site.com' -H 'Sec-WebSocket-Key: MIN4DsiwEAutsE11kgG5rg=='  -H 'Upgrade: websocket' -H 'Connection: Upgrade' -H 'Sec-WebSocket-Version: 13'

查看您的服务器日志文件，可能在中

日志/暂存日志

[i在暂存服务器中]