index_peer.js

// PEERJS - Emisor
let peer;
let peerId = null;

function iniciarPeer() {
  peer = new Peer({
    host: '0.peerjs.com',
    port: 443,
    secure: true
  });

  peer.on('open', id => {
    peerId = id;
    document.getElementById('peerIdBox').textContent = 'ID: ' + id;
    document.getElementById('peerIdBox').style.display = 'block';
  });

  peer.on('call', call => {
    navigator.mediaDevices.getUserMedia({video: true, audio: true})
      .then(stream => {
        call.answer(stream);
        agregarLog('Familiar conectado a la cámara ✓', 'info');
      });
  });
}