28 lines
647 B
JavaScript
28 lines
647 B
JavaScript
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'use strict'
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const net = require('net')
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const NetUtils = {
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bindAvailablePort (port, listenAddress) {
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return new Promise((resolve, reject) => {
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const server = net.createServer()
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server
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.on('error', (err) => {
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server.close()
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if (err.code === 'EADDRINUSE' || err.code === 'EACCES') {
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server.listen(++port, listenAddress)
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} else {
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reject(new Error(`Failed to bind ${port}: ` + (err.stack || err)))
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}
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})
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.on('listening', () => {
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resolve(server)
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})
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.listen(port, listenAddress)
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})
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}
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}
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module.exports = NetUtils
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