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external-ip

Build Status Dependency Status npm version

XKCD 865

external-ip is a node.js library to get your external ip from multiple services.

Installation

npm install external-ip

Usage

basic

'use strict';

const getIP = require('external-ip')();

getIP((err, ip) => {
    if (err) {
        // every service in the list has failed
        throw err;
    }
    console.log(ip);
});

with configuration

'use strict';

const extIP = require('external-ip');

let getIP = extIP({
    replace: true,
    services: ['https://ipinfo.io/ip', 'http://ifconfig.co/x-real-ip', 'http://ifconfig.io/ip'],
    timeout: 600,
    getIP: 'parallel',
    userAgent: 'Chrome 15.0.874 / Mac OS X 10.8.1'
});

getIP((err, ip) => {
    if (err) {
        throw err;
    }
    console.log(ip);
});

Promises

The API of this library is designed around the classic node.js error-first callback. As of node.js V8, converting this type of callback into a promise is pretty straight forward and requires one more line of code.

basic

'use strict';

const {promisify} = require('util'); //<-- Require promisify
const getIP = promisify(require('external-ip')()); // <-- And then wrap the library

getIP().then((ip)=> {
    console.log(ip);
}).catch((error) => {
    console.error(error);
});

with configuration

'use strict';
const { promisify } = require('util'); //<-- Require promisify
const getIP = promisify(require('external-ip')({
    replace: true,
    services: ['https://ipinfo.io/ip', 'http://icanhazip.com/', 'http://ident.me/'],
    timeout: 600,
    getIP: 'parallel',
    verbose: true
})); // <-- And then wrap the library

getIP().then((ip) => {
    console.log(ip);
}).catch((error) => {
    console.error(error);
});

If you believe this extra step shouldn't be there, feel free to open an issue and/or a pull request.

Configuration

extIP([config])

require('external-ip') returns a constructor function that accepts an optional configuration object. It can be used to create multiple instances with different configuration if necessary

  • services: Array of urls that return the ip in the html body, required if replace is set to true
  • replace: Boolean if true, replaces the internal array of services with the user defined, if false, extends it, default: false
  • timeout: Timeout per request in ms, default 1000
  • getIP: 'sequential' Makes a request to the first url in the list, if that fails sends to the next and so on. 'parallel' Makes requests to all the sites in the list, on the first valid response all the pending requests are canceled, default: 'sequential'
  • userAgent: String Set a custom User-Agent header, default: curl/
  • verbose: Boolean Log additional information to the console, default: false

Returns the configured getIP instance.

getIP(callback)

The callback gets 2 arguments:

  1. error: if every service in the list fails to return a valid ip
  2. ip: your external ip

CLI

install as a global package with npm install -g external-ip.

$ external-ip -h

Usage: external-ip [options]

  Options:

    -h, --help                    output usage information
    -V, --version                 output the version number
    -R, --replace                 replace internal services instead of extending them.
    -s, --services <url>          service url, see examples, required if using -R
    -t, --timeout <ms>            set timeout per request
    -P, --parallel                set to parallel mode
    -u, --userAgent <User-Agent>  provide a User-Agent header, default: curl/
    -v, --verbose                 provide additional details


        This program prints the external IP of the machine.
        All arguments are optional.

        Examples:
        $ external-ip
        $ external-ip -P -t 1500 -R -s http://icanhazip.com/ -s http://ident.me/

        Default services:
        http://icanhazip.com/
        http://ident.me/
        http://tnx.nl/ip
        http://myip.dnsomatic.com/
        http://ipecho.net/plain
        http://diagnostic.opendns.com/myip

        Documentation can be found at https://github.com/J-Chaniotis/external-ip

Test

Change your working directory to the project's root, npm install to get the development dependencies and then run npm test

Links