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'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
{
const socket = dgram.createSocket('udp4');
assert.throws(() => {
socket.setMulticastLoopback(16);
}, /^Error: setMulticastLoopback EBADF$/);
}
{
const socket = dgram.createSocket('udp4');
socket.bind(0);
socket.on('listening', common.mustCall(() => {
assert.strictEqual(socket.setMulticastLoopback(16), 16);
assert.strictEqual(socket.setMulticastLoopback(0), 0);
socket.close();
}));
}