Default-network NPM

default-network

A Node.js module to get default gateway and default interface.

100% Pure JavaScript😽

This module depends on following commands by using chid_process provided by Node.js.

win32 - wmic path Win32_NetworkAdapterConfiguration get * - wmic path Win32_NetworkAdapter get *
darwin
- netstat -rn -f inet
- netstat -rn -f inet6
linux
- netstat -rn -A inet
- netstat -rn -A inet6

Installation

npm install default-network

API

collect(callback)

Asynchronously collects a object which contains interface names, families (IPv4 or IPv6), and addresses. The callback gets two arguments (error, data).

Example 1

How to get default gateway and default interface.

An example code: example1.js

var route = require('default-network');
route.collect(function(error, data) {
  console.log(data);
});

An example output:

{ en4: 
   [ { family: 'IPv4', address: '192.168.1.1' },
     { family: 'IPv6', address: 'fe80::20b:a2ff:fede:2886%en4' } ],
  en0: 
   [ { family: 'IPv4', address: '192.168.1.1' },
     { family: 'IPv6', address: 'fe80::20b:a2ff:fede:2886%en0' } ],
  en8: 
   [ { family: 'IPv4', address: '192.168.1.1' },
     { family: 'IPv6', address: 'fe80::20b:a2ff:fede:2886%en8' } ] }

Example 2

How to get default interface from os.networkInterfaces().

An example code: example2.js

var os = require('os');
var route = require('default-network');
route.collect(function(error, data) {
  names = Object.keys(data);
  // names[0] is 'en4'
  console.log(os.networkInterfaces()[names[0]]);
});

An example output:

[ { address: 'fe80::6a5b:35ff:fe96:cc05',
    netmask: 'ffff:ffff:ffff:ffff::',
    family: 'IPv6',
    mac: '00:00:00:00:00:00',
    scopeid: 14,
    internal: false },
  { address: '2001:a0ae:7c22:0:6a5b:35ff:fe96:cc05',
    netmask: 'ffff:ffff:ffff:ffff::',
    family: 'IPv6',
    mac: '00:00:00:00:00:00',
    scopeid: 0,
    internal: false },
  { address: '2001:a0ae:7c22:0:a8d1:fef3:2917:cd87',
    netmask: 'ffff:ffff:ffff:ffff::',
    family: 'IPv6',
    mac: '00:00:00:00:00:00',
    scopeid: 0,
    internal: false },
  { address: '192.168.1.10',
    netmask: '255.255.255.0',
    family: 'IPv4',
    mac: '00:00:00:00:00:00',
    internal: false } ]