'use strict'; const common = require('../common'); const assert = require('assert'); const dgram = require('dgram'); // Send a too big datagram. The destination doesn't matter because it's // not supposed to get sent out anyway. const buf = Buffer.allocUnsafe(256 * 1024); const sock = dgram.createSocket('udp4'); sock.send(buf, 0, buf.length, 12345, '127.0.0.1', common.mustCall(cb)); function cb(err) { assert(err instanceof Error); assert.strictEqual(err.code, 'EMSGSIZE'); assert.strictEqual(err.address, '127.0.0.1'); assert.strictEqual(err.port, 12345); assert.strictEqual(err.message, 'send EMSGSIZE 127.0.0.1:12345'); sock.close(); }