1'use strict'; 2 3const common = require('../common'); 4const assert = require('assert'); 5 6const dgram = require('dgram'); 7const client = dgram.createSocket('udp4'); 8 9const buf = Buffer.alloc(256, 'x'); 10const offset = 20; 11const len = buf.length - offset; 12 13const onMessage = common.mustCall(function messageSent(err, bytes) { 14 assert.ifError(err); 15 assert.notStrictEqual(bytes, buf.length); 16 assert.strictEqual(bytes, buf.length - offset); 17 client.close(); 18}); 19 20client.bind(0, () => client.send(buf, offset, len, 21 client.address().port, 22 onMessage)); 23