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Last change
on this file since 59329aa was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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Property mode
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100644
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File size:
647 bytes
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| [6a3a178] | 1 | 'use strict'
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| 2 |
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| 3 | const net = require('net')
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| 4 |
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| 5 | const NetUtils = {
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| 6 | bindAvailablePort (port, listenAddress) {
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| 7 | return new Promise((resolve, reject) => {
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| 8 | const server = net.createServer()
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| 9 |
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| 10 | server
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| 11 | .on('error', (err) => {
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| 12 | server.close()
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| 13 | if (err.code === 'EADDRINUSE' || err.code === 'EACCES') {
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| 14 | server.listen(++port, listenAddress)
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| 15 | } else {
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| 16 | reject(new Error(`Failed to bind ${port}: ` + (err.stack || err)))
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| 17 | }
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| 18 | })
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| 19 | .on('listening', () => {
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| 20 | resolve(server)
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| 21 | })
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| 22 | .listen(port, listenAddress)
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| 23 | })
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| 24 | }
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| 25 | }
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| 26 |
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| 27 | module.exports = NetUtils
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