code: function filter(socket, message, rinfo) {
    const isAllowedAddress = socket.remoteAddress === rinfo.address;
    const isAllowedPort = socket.remotePort === rinfo.port;
  
    return isAllowedAddress && isAllowedPort;
  }
docs: Default filter for incoming messages.
  @param {Socket} socket
  @param {Buffer} message
  @param {{address: string, port: number}} rinfo
  @returns {bool}