1'use strict'; 2 3const common = require('../common'); 4const assert = require('assert'); 5const dgram = require('dgram'); 6 7const client = dgram.createSocket('udp4'); 8 9const messageSent = common.mustCall((err, bytes) => { 10 assert.strictEqual(bytes, buf1.length + buf2.length); 11}); 12 13const buf1 = Buffer.alloc(256, 'x'); 14const buf2 = Buffer.alloc(256, 'y'); 15 16client.on('listening', common.mustCall(() => { 17 const port = client.address().port; 18 client.connect(port, common.mustCall(() => { 19 client.send([buf1, buf2], messageSent); 20 })); 21})); 22 23client.on('message', common.mustCall((buf, info) => { 24 const expected = Buffer.concat([buf1, buf2]); 25 assert.ok(buf.equals(expected), 'message was received correctly'); 26 client.close(); 27})); 28 29client.bind(0); 30