| 1 | ;
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| 2 | var net = require('net');
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| 3 | var Promise = require('pinkie-promise');
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| 4 |
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| 5 | module.exports = function () {
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| 6 | return new Promise(function (resolve, reject) {
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| 7 | var server = net.createServer();
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| 8 |
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| 9 | server.unref();
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| 10 | server.on('error', reject);
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| 11 |
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| 12 | server.listen(0, function () {
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| 13 | var port = server.address().port;
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| 14 |
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| 15 | server.close(function () {
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| 16 | resolve(port);
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| 17 | });
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| 18 | });
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| 19 | });
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| 20 | };
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