error when reverse proxy

[loveshell]

cat nginx.conf
server
{
listen 80;
server_name view.test.com;
root /usr/lib/nodejs/maptail/public;
index index.html;

          location / {
            proxy_pass        http://1.1.1.1:4000;
        }

   }

nodejs command
tail -f /data/logs/*.log|maptail -h 0.0.0.0 -p 4000

but it's error

Unexpected response code: 200 :1
Uncaught Error: Uncaught, unspecified 'error' event. simpl.js:86
EventEmitter.emit simpl.js:86
EventStack.emit simpl.js:327
client.onerror

[stagas]

probably some incompatibility with some updated version of something. if anyone has the time to fix it or even replace simpl with something more solid that works today I'll be happy to accept the pull and I'll be forever grateful.

[loveshell]

thx，i had sloved it

[changzheng]

How are you sloved it?

[peter34861]

https://chrislea.com/2013/02/23/proxying-websockets-with-nginx/

websocket