Event: 'message'
msg <Buffer> - The message
rinfo <Object> - Remote address information
The 'message' event is emitted when a new datagram is available on a socket. The event handler function is passed two arguments: msg and rinfo. The msg argument is a Buffer and rinfo is an object with the sender's address information provided by the address, family and port properties:
socket.on('message', (msg, rinfo) => {
console.log('Received %d bytes from %s:%d\n',
msg