WebSocket握手期间Rails 6 Production ActionCable错误答案

【问题标题】：Rails 6 Production ActionCable Error during WebSocket handshakeWebSocket握手期间Rails 6 Production ActionCable错误
【发布时间】：2021-04-06 07:55:57
【问题描述】：

WebSocket connection to 'ws://my-ec2/cable' failed: 
Error during WebSocket handshake: Unexpected response code: 404

伙计们，我在这里经常看到这个（旧）问题，所以它看起来像是重复的。但就我而言，我非常努力地修复这个错误，但我不能。我也遵循此更正：https://stackoverflow.com/a/55715218/8478892 但没有成功。

我的 nginx.conf：

upstream puma {
    server unix:///home/ubuntu/apps/my_app/shared/tmp/sockets/my_app-puma.sock;
}

server {
    listen 80 default_server deferred;

    # If you're planning on using SSL (which you should), you can also go ahead and fill out the following server_name variable:
    # server_name example.com;

    # Don't forget to update these, too
    root /home/ubuntu/apps/my_app/current/public;
    access_log /var/log/nginx/nginx.access.log;
    error_log /var/log/nginx/nginx.error.log info;

    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";
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass_request_headers on;

        proxy_buffering off;
        proxy_redirect off;
        break;
    }

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

在我的 cable.yml 中：

production:
  url: redis://http://my-ec2.com:6379

local: &local
  url: redis://localhost:6379

development: *local
test: *local

还有我的环境/production.rb：

Rails.application.configure do

  config.cache_classes = true

  config.eager_load = true

  config.consider_all_requests_local       = false


  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?



  config.active_storage.service = :local

  config.action_cable.mount_path = '/cable'
  config.action_cable.url = 'ws://my-ec2/cable'
  config.action_cable.allow_same_origin_as_host = true
  config.action_cable.allowed_request_origins = ["*"]


  config.log_level = :debug

  config.log_tags = [ :request_id ]



  config.action_mailer.perform_caching = false


  config.i18n.fallbacks = true

  config.active_support.deprecation = :notify

  config.log_formatter = ::Logger::Formatter.new


  if ENV["RAILS_LOG_TO_STDOUT"].present?
    logger           = ActiveSupport::Logger.new(STDOUT)
    logger.formatter = config.log_formatter
    config.logger    = ActiveSupport::TaggedLogging.new(logger)
  end

  config.active_record.dump_schema_after_migration = false

end

为遇到此问题的人考虑的一天：

在 localhost 上设置 ActionCable 已经是一场精彩的战斗，但在生产环境中设置则是一场完整的战争。

【问题讨论】：

标签： ruby-on-rails amazon-ec2 websocket ruby-on-rails-6 actioncable

【解决方案1】：

你的机器上安装了 redis 还是 docker 容器？我想你是用sidekiq用的，/config/initializers下有sidekiq/redis初始化文件吗？

在cable.yml应该是

production:
  url: redis://redis:6379/0

【讨论】：

我解决了这个问题。我会添加一个答案。谢谢！

【解决方案2】：

几天后，我自己设法解决了这个问题。我的错误的主要原因是在我的环境/production.rb 文件中，我说可操作端点是我的 ec2 的公共 ip。但实际上你应该把localhost。我使用了与 development.rb 中相同的配置：

production.rb 之前：

...
   config.action_cable.mount_path = '/cable'
   config.action_cable.url = 'ws://my_ec2/cable'
   config.action_cable.allow_same_origin_as_host = true
   config.action_cable.allowed_request_origins = ["*"]
...

production.rb 之后：

...
  config.action_cable.disable_request_forgery_protection = true
   config.action_cable.url = "ws://localhost:3000/cable"
   config.action_cable.allowed_request_origins = [/http:\/\/*/, /https:\/\/*/]
   config.action_cable.allowed_request_origins = /(\.dev$)|^localhost$/
...

【讨论】：