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52 lines
1.8 KiB
52 lines
1.8 KiB
2 weeks ago
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# default-gateway
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[](https://www.npmjs.org/package/default-gateway) [](https://www.npmjs.org/package/default-gateway)
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Obtains the machine's default gateway through `exec` calls to OS routing interfaces.
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- On Linux and Android, the `ip` command must be available (usually provided by the `iproute2` package).
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- On Windows, `wmic` must be available.
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- On IBM i, the `db2util` command must be available (provided by the `db2util` package).
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- On Unix (and macOS), the `netstat` command must be available.
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## Installation
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```
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$ npm i default-gateway
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```
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## Example
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```js
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const defaultGateway = require('default-gateway');
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const {gateway, interface} = await defaultGateway.v4();
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// gateway = '1.2.3.4', interface = 'en1'
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const {gateway, interface} = await defaultGateway.v6();
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// gateway = '2001:db8::1', interface = 'en2'
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const {gateway, interface} = defaultGateway.v4.sync();
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// gateway = '1.2.3.4', interface = 'en1'
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const {gateway, interface} = defaultGateway.v6.sync();
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// gateway = '2001:db8::1', interface = 'en2'
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```
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## API
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### defaultGateway.v4()
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### defaultGateway.v6()
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### defaultGateway.v4.sync()
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### defaultGateway.v6.sync()
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Returns: `result` *Object*
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- `gateway`: The IP address of the default gateway.
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- `interface`: The name of the interface. On Windows, this is the network adapter name.
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The `.v{4,6}()` methods return a Promise while the `.v{4,6}.sync()` variants will return the result synchronously.
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The `gateway` property will always be defined on success, while `interface` can be `null` if it cannot be determined. All methods reject/throw on unexpected conditions.
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## License
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© [silverwind](https://github.com/silverwind), distributed under BSD licence
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