node/test/parallel/test-dgram-multicast-setTTL.js
Brian White 2bc7841d0f
test: use random ports where possible
This helps to prevent issues where a failed test can keep a bound
socket open long enough to cause other tests to fail with EADDRINUSE
because the same port number is used.

PR-URL: https://github.com/nodejs/node/pull/7045
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
2016-06-10 22:30:55 -04:00

24 lines
512 B
JavaScript

'use strict';
require('../common');
const assert = require('assert');
const dgram = require('dgram');
const socket = dgram.createSocket('udp4');
let thrown = false;
socket.bind(0);
socket.on('listening', function() {
socket.setMulticastTTL(16);
//Try to set an invalid TTL (valid ttl is > 0 and < 256)
try {
socket.setMulticastTTL(1000);
} catch (e) {
thrown = true;
}
assert(thrown, 'Setting an invalid multicast TTL should throw some error');
//close the socket
socket.close();
});