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).

Installation

$ npm install default-gateway

Example

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 when the gateway cannot be determined or the exec call failed.

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