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- # default-gateway
- [![](https://img.shields.io/npm/v/default-gateway.svg?style=flat)](https://www.npmjs.org/package/default-gateway) [![](https://img.shields.io/npm/dm/default-gateway.svg)](https://www.npmjs.org/package/default-gateway) [![](https://api.travis-ci.org/silverwind/default-gateway.svg?style=flat)](https://travis-ci.org/silverwind/default-gateway)
-
- > Get the default network gateway, cross-platform.
-
- Obtains the machine's default gateway through `exec` calls to OS routing interfaces. On Linux and Android, the `ip` command must be available (usually provided by the `iproute2` package). On IBM i, the `db2util` command must be available (provided by the `db2util` package).
-
- ## Installation
-
- ```
- $ npm install default-gateway
- ```
-
- ## Example
-
- ```js
- const defaultGateway = require('default-gateway');
-
- defaultGateway.v4().then(result => {
- // result = {gateway: '1.2.3.4', interface: 'en1'}
- });
-
- defaultGateway.v6().then(result => {
- // result = {gateway: '2001:db8::1', interface: 'en2'}
- });
-
- const result = defaultGateway.v4.sync();
- // result = {gateway: '1.2.3.4', interface: 'en1'}
-
- const result = defaultGateway.v6.sync();
- // result = {gateway: '2001:db8::1', interface: 'en2'}
- ```
-
- ## API
- ### defaultGateway.v4()
- ### defaultGateway.v6()
- ### defaultGateway.v4.sync()
- ### defaultGateway.v6.sync()
-
- Returns: `result` *Object*
- - `gateway`: The IP address of the default gateway.
- - `interface`: The name of the interface. On Windows, this is the network adapter name.
-
- The `.v{4,6}()` methods return a Promise while the `.v{4,6}.sync()` variants will return the result synchronously.
-
- 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.
-
- ## License
-
- © [silverwind](https://github.com/silverwind), distributed under BSD licence
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