timoxley
/ isPortTaken.js
Last active
April 19, 2024 11:51
check if a port is being used with nodejs
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| var isPortTaken = function(port, fn) { | |
| var net = require('net') | |
| var tester = net.createServer() | |
| .once('error', function (err) { | |
| if (err.code != 'EADDRINUSE') return fn(err) | |
| fn(null, true) | |
| }) | |
| .once('listening', function() { | |
| tester.once('close', function() { fn(null, false) }) | |
| .close() |
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