Can I connect Unity App with Node.js server?

Hello,

Can I connect Unity App with Node.js server by heroku.com and openshift.com?

I try to use Unity Socket.IO Asset: https://www.assetstore.unity3d.com/en/#!/content/21721

When I install this asset I can to use "Socket IO Component (Script)"

I see this field on "Socket IO Component (Script)"

Url: ws://127.0.0.1:3000/socket.io/?EIO=4&transport=websocket

I deployed my 'server' on heroku.com I have this address: https://unitychat.herokuapp.com/

I converted this...

Can I connect Unity App with Node.js server?