問題是什麼？

当触发时，应用程序会因无法连接到本地主机的Redis on localhost:6379（Errno::ECONNREFUSED）（Redis::CannotConnectError）而崩溃。

/path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:332:in `rescue in establish_connection': Error connecting to Redis on localhost:6379 (Errno::ECONNREFUSED) (Redis::CannotConnectError)
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:318:in `establish_connection'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:94:in `block in connect'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:280:in `with_reconnect'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:93:in `connect'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:351:in `ensure_connected'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:208:in `block in process'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:293:in `logging'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:207:in `process'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis/client.rb:113:in `call'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis.rb:2085:in `block in publish'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis.rb:57:in `block in synchronize'
    from /Users/hirokishirai/.rbenv/versions/2.3.0/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis.rb:57:in `synchronize'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/redis-3.2.2/lib/redis.rb:2084:in `publish'
    from /path_to_app_dir/vendor/bundle/ruby/2.3.0/gems/websocket-rails-0.7.0/lib/websocket_rails/synchronization.rb:63:in `block in publish'

两个解决方案

两者都已经进行了操作确认。
您可以直接使用moaa的修复补丁，或者暂时将Redis降级至3.2.0版本，并等待websocket-rail的主分支合并修复补丁。我认为无论哪种方式都可以。

使用moaa/websocket-rails的sync_fixes分支的方法1

将Gemfile修改为以下内容

- gem 'websocket-rails'
+ gem 'websocket-rails', github: 'moaa/websocket-rails', branch: 'sync_fixes'

把方法2中的gem ‘redis’版本降级到3.2.0。

修改Gemfile内容如下

- gem 'redis'
+ gem 'redis', '3.2.0'

由于Gemfile.lock锁定了版本，应该无法通过bundle install更新redis。

bundle update redis

来源↓

请用中文将以下内容进行改写，只需提供一种选项：

Source↓

在发送两条不同的消息时发生了Redis错误 · 问题 ＃313 · websocket-rails/websocket-rails