74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
# node-portfinder [](https://github.com/http-party/node-portfinder/actions/workflows/ci.yml)
|
|
|
|
## Installation
|
|
|
|
``` bash
|
|
$ npm install portfinder
|
|
```
|
|
|
|
## Usage
|
|
The `portfinder` module has a simple interface:
|
|
|
|
``` js
|
|
var portfinder = require('portfinder');
|
|
|
|
portfinder.getPort(function (err, port) {
|
|
//
|
|
// `port` is guaranteed to be a free port
|
|
// in this scope.
|
|
//
|
|
});
|
|
```
|
|
|
|
Or with promise (if `Promise`s are supported) :
|
|
|
|
``` js
|
|
const portfinder = require('portfinder');
|
|
|
|
portfinder.getPortPromise()
|
|
.then((port) => {
|
|
//
|
|
// `port` is guaranteed to be a free port
|
|
// in this scope.
|
|
//
|
|
})
|
|
.catch((err) => {
|
|
//
|
|
// Could not get a free port, `err` contains the reason.
|
|
//
|
|
});
|
|
```
|
|
|
|
If `portfinder.getPortPromise()` is called on a Node version without Promise (<4), it will throw an Error unless [Bluebird](http://bluebirdjs.com/docs/getting-started.html) or any Promise pollyfill is used.
|
|
|
|
### Ports search scope
|
|
|
|
By default `portfinder` will start searching from `8000` and scan until maximum port number (`65535`) is reached.
|
|
|
|
You can change this globally by setting:
|
|
|
|
```js
|
|
portfinder.setBasePort(3000); // default: 8000
|
|
portfinder.setHighestPort(3333); // default: 65535
|
|
```
|
|
|
|
or by passing optional options object on each invocation:
|
|
|
|
```js
|
|
portfinder.getPort({
|
|
port: 3000, // minimum port
|
|
stopPort: 3333 // maximum port
|
|
}, callback);
|
|
```
|
|
|
|
## Run Tests
|
|
``` bash
|
|
$ npm test
|
|
```
|
|
|
|
#### Author: [Charlie Robbins][0]
|
|
#### Author/Maintainer: [Erik Trom][1]
|
|
#### License: MIT/X11
|
|
[0]: http://nodejitsu.com
|
|
[1]: https://github.com/eriktrom
|