Websocket in RN seems to to respond correctly with a pong when ping is received (as per the Websockets spec.).

It would be great if there also where a function to send a ping and an event for knowing when pong is received.

Like this:

var ws = new WebSocket('ws://host.com/path');

ws.ping();

ws.onpong = () => {
  // pong received  
  // this socket is alive
};