ngrok

Ngrok exposes your localhost to the web. https://ngrok.com/

usage

var ngrok = require('ngrok');
ngrok.connect(function (err, url) {});

or

npm install ngrok -g
ngrok http 8080

authtoken

You can create basic http-https-tcp tunnel without authtoken. For custom subdomains and more you should obtain authtoken by signing up at ngrok.com. Once you set it, it's stored in ngrok config and used for all tunnels. Few ways:

ngrok.authtoken(token, function(err, token) {});
ngrok.connect({authtoken: token, ...}, function (err, url) {});
ngrok authtoken <token>

connect

var ngrok = require('ngrok');

ngrok.connect(function (err, url) {}); // https://757c1652.ngrok.io -> http://localhost:80
ngrok.connect(9090, function (err, url) {}); // https://757c1652.ngrok.io -> http://localhost:9090
ngrok.connect({proto: 'tcp', addr: 22}, function (err, url) {}); // tcp://0.tcp.ngrok.io:48590
ngrok.connect(opts, function(err, url) {});

options

ngrok.connect({
    proto: 'http', // http|tcp|tls
    addr: 8080, // port or network address
    auth: 'user:pwd', // http basic authentication for tunnel
    subdomain: 'alex', // reserved tunnel name https://alex.ngrok.io,
    authtoken: '12345' // your authtoken from ngrok.com
}, function (err, url) {});

Other options: name, inspect, host_header, bind_tls, hostname, crt, key, client_cas, remote_addr - read here

disconnect

The ngrok and all tunnels will be killed when node process is done. To stop the tunnels use

ngrok.disconnect(url); // stops one
ngrok.disconnect(); // stops all
ngrok.kill(); // kills ngrok process

emitter

Also you can use ngrok as an event emitter, it fires "connect", "disconnect" and "error" events

ngrok.once('connect', function (url) {};
ngrok.connect(port);

configs

You can use ngrok's configurations files, then just pass name option when making a tunnel. Configuration files allow to specify more options, eg ngrok region you want to use.

OS X	/Users/example/.ngrok2/ngrok.yml
Linux	/home/example/.ngrok2/ngrok.yml
Windows	C:\Users\example\.ngrok2\ngrok.yml

inspector

When tunnel is established you can use the ngrok interface http://127.0.0.1:4040 to inspect the webhooks done via ngrok.

how it works

npm install downloads ngrok binaries for you platform and puts them into bin folder. You can host binaries yourself and set NGROK_CDN_URL env var before installing ngrok.

First time you create tunnel ngrok process is spawned and runs until you disconnect or when parent process killed. All further tunnels are created or stopped by using internal ngrok api which usually runs on http://127.0.0.1:4040

contributors

Please run git update-index --assume-unchanged bin/ngrok to not override ngrok stub in your pr. Unfortunately it can't be gitignored.