我目前正在一个具有以下功能的网站上工作：

>即时聊天
>一些统计
>一些形式

我正在使用：Rails 4 Puma Nginx

我正在使用ActionController :: Live并创建了一个事件动作,该事件动作在页面加载时被调用,并且绑定了侦听器,以监听聊天消息或更改统计信息.

def events
response.headers["Content-Type"] = "text/event-stream"

sse   = ServerEvent.new(response.stream)
redis = Redis.new

# the safe_write method is the implementation of a workaround for the problem stated on
# http://evaleverything.com/2013/09/07/response-streams-with-rails-4-and-redis
sse.safe_write do
  redis.psubscribe("redis-foobar-key*") do |on|
    on.pmessage do |pattern, event, data|
      sse.write(data, { event: event})
    end
  end
end
rescue IOError
  puts "Stream Closed"
ensure
  puts "closing all threads and connections\n"
  redis.quit
  sse.close
end

我面临的问题是：加载页面时,有时一切正常,我可以启动事件源并正确处理事件,但有时事件源请求保持待处理状态,并且不返回任何错误.

我已通过以下方式成功尝试：

>镀铬窗户
> chrome macosx(计算机A)
> firefox macosx(计算机A)

并通过以下方式进行了不成功的尝试：

> chrome ubuntu(在代理之后)
> firefox ubuntu(在代理之后)
> chrome-macosx(计算机B)
> firefox macosx(计算机B)

我正在使用nginx,但是不要以为是问题,这是我的配置

upstream bar {
  server foo.com:9292;
}

server {
  listen 80;
  server_name foo.com megafoo.com;
  root /(...)/public;

  location / {
    proxy_pass http://bar;


    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    proxy_set_header Connection '';
    proxy_http_version 1.1;
    chunked_transfer_encoding off;

    proxy_buffering off;
    proxy_cache off;

    if (-f $request_filename) {
     break;
    }
  }

  location ~* ^/assets/ {
    # Per RFC2616 - 1 year maximum expiry
    expires 1y;
    add_header Cache-Control public;

    # Some browsers still send conditional-GET requests if there's a
    # Last-Modified header or an ETag header even if they haven't
    # reached the expiry date sent in the Expires header.
    add_header Last-Modified "";
    add_header ETag "";
    break;
  }
}

解决方法:

看起来杀毒软件阻止了连接,不允许其成功完成