1'use strict'; 2const common = require('../common'); 3const assert = require('assert'); 4const dgram = require('dgram'); 5const dc = require('diagnostics_channel'); 6 7const udpSocketChannel = dc.channel('udp.socket'); 8 9const isUDPSocket = (socket) => socket instanceof dgram.Socket; 10 11udpSocketChannel.subscribe(common.mustCall(({ socket }) => { 12 assert.strictEqual(isUDPSocket(socket), true); 13})); 14const socket = dgram.createSocket('udp4'); 15socket.close(); 16