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80 lines
1.9 KiB
80 lines
1.9 KiB
2 years ago
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# portscanner
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[](https://www.npmjs.com/package/portscanner)
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[](http://standardjs.com/)
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The portscanner module is
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an asynchronous JavaScript port scanner for Node.js.
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Portscanner can check a port,
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or range of ports,
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for 'open' or 'closed' statuses.
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[Looking for maintainer](https://github.com/baalexander/node-portscanner/issues/25)!
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## Install
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```bash
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npm install portscanner
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```
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## Usage
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A brief example:
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```javascript
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var portscanner = require('portscanner')
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// Checks the status of a single port
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portscanner.checkPortStatus(3000, '127.0.0.1', function(error, status) {
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// Status is 'open' if currently in use or 'closed' if available
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console.log(status)
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})
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// Find the first available port. Asynchronously checks, so first port
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// determined as available is returned.
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portscanner.findAPortNotInUse(3000, 3010, '127.0.0.1', function(error, port) {
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console.log('AVAILABLE PORT AT: ' + port)
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})
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// Find the first port in use or blocked. Asynchronously checks, so first port
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// to respond is returned.
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portscanner.findAPortInUse(3000, 3010, '127.0.0.1', function(error, port) {
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console.log('PORT IN USE AT: ' + port)
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})
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// You can also pass array of ports to check
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portscanner.findAPortInUse([3000, 3005, 3006], '127.0.0.1', function(error, port) {
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console.log('PORT IN USE AT: ' + port)
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})
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// And skip host param. Default is '127.0.0.1'
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portscanner.findAPortNotInUse(3000, 4000, function(error, port) {
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console.log('PORT IN USE AT: ' + port)
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})
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// And use promises
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portscanner.findAPortNotInUse(3000, 4000).then(function(port) {
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console.log('PORT IN USE AT: ' + port)
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})
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```
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The example directory contains a more detailed example.
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## Test
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```sh
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npm test
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```
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## Future
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Please create issues or pull requests
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for port scanning related features
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you'd like to see included.
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## License (MIT)
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[MIT](LICENSE)
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