Which is better WebSockets or socket.io?

Question

Socket.io

Good afternoon.
There is a big site.

• Front end: Angular 4
  
• Back-end: Yii 2
  

You need to write an API that works through sockets.
Which is better to use Web Sockets (raw) vs Socket.io?

Answer 1

Which is better WebSockets or socket.io

web sockets

Answer 2

socket.io works on the websocket protocol.
gasoline or car, what to choose? Roughly speaking