Websocket握手期间的Rails ActionCable错误

Posted 2023-02-15

【中文标题】Websocket握手期间的Rails ActionCable错误

【英文标题】：Rails ActionCable error during websocket handshake

【发布时间】：2016-11-30 11:00:10

【问题描述】：

我正在尝试使用 Rails 5 ActionCable 构建消息传递应用程序，但在 JS 控制台中出现上述错误。

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

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

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

...你可以看到它返回 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.

在 nginx 方面，我是一个完整的初学者。这是 NGINX 的问题吗？如果是这样，我该如何解决？我是否要在/usr/local/etc/nginx/ 中重新配置我的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/*;

【参考方案1】：

当我有一个斜杠时出现此错误

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

删除它为我解决了这个问题（如下所示）

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

我通过使用Ref 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

log/staging.log

[我在登台服务器中]

【参考方案2】：

把它放到你的环境配置文件中

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

【讨论】：

<%= action_cable_meta_tag %> inside application.html.erb + 以上配置对我有用。

【参考方案3】：

解决方案

确保你有

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

还有，

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

【讨论】：

action_cable_meta_tag 为我做了这件事。没有它，客户端不知道将请求发送到哪里，并尝试使用默认 URL。谢谢。

这仅适用于开发。如何使用 wss 在生产中实现？