99 lines
3.9 KiB
Markdown
99 lines
3.9 KiB
Markdown
ngrok [](https://travis-ci.org/bubenshchykov/ngrok)
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=====
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Ngrok exposes your localhost to the web. https://ngrok.com/
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usage
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===
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[](https://nodei.co/npm/ngrok/)
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```
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var ngrok = require('ngrok');
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ngrok.connect(function (err, url) {});
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or
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npm install ngrok -g
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ngrok http 8080
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```
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## authtoken
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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](https://ngrok.com). Once you set it, it's stored in ngrok config and used for all tunnels. Few ways:
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```
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ngrok.authtoken(token, function(err, token) {});
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ngrok.connect({authtoken: token, ...}, function (err, url) {});
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ngrok authtoken <token>
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```
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## connect
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```javascript
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var ngrok = require('ngrok');
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ngrok.connect(function (err, url) {}); // https://757c1652.ngrok.io -> http://localhost:80
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ngrok.connect(9090, function (err, url) {}); // https://757c1652.ngrok.io -> http://localhost:9090
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ngrok.connect({proto: 'tcp', addr: 22}, function (err, url) {}); // tcp://0.tcp.ngrok.io:48590
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ngrok.connect(opts, function(err, url) {});
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```
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## options
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```javascript
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ngrok.connect({
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proto: 'http', // http|tcp|tls
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addr: 8080, // port or network address
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auth: 'user:pwd', // http basic authentication for tunnel
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subdomain: 'alex', // reserved tunnel name https://alex.ngrok.io
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authtoken: '12345', // your authtoken from ngrok.com
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region: 'us' // one of ngrok regions (us, eu, au, ap), defaults to us
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}, function (err, url) {});
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```
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Other options: `name, inspect, host_header, bind_tls, hostname, crt, key, client_cas, remote_addr` - read [here](https://ngrok.com/docs)
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Note on regions: region used in first tunnel will be used for all next tunnels too.
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## disconnect
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The ngrok and all tunnels will be killed when node process is done. To stop the tunnels use
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```javascript
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ngrok.disconnect(url); // stops one
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ngrok.disconnect(); // stops all
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ngrok.kill(); // kills ngrok process
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```
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Note on http tunnels: by default bind_tls is true, so whenever you use http proto two tunnels are created - http and https. If you disconnect https tunnel, http tunnel remains open. You might want to close them both by passing http-version url, or simply by disconnecting all in one go ```ngrok.disconnect()```.
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## emitter
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Also you can use ngrok as an event emitter, it fires "connect", "disconnect" and "error" events
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```javascript
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ngrok.once('connect', function (url) {};
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ngrok.connect(port);
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```
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## configs
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You can use ngrok's [configurations files](https://ngrok.com/docs#config), then just pass `name` option when making a tunnel. Configuration files allow to specify more options, eg ngrok region you want to use.
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```
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OS X /Users/example/.ngrok2/ngrok.yml
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Linux /home/example/.ngrok2/ngrok.yml
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Windows C:\Users\example\.ngrok2\ngrok.yml
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```
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## inspector
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When tunnel is established you can use the ngrok interface http://127.0.0.1:4040 to inspect the webhooks done via ngrok.
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## process
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To get a handle to the spawned ngrok process use
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```javascript
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ngrok.process(); // returns ChildProcess
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```
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## how it works
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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. Or you can force specific arch by setting NGROK_ARCH, eg NGROK_ARCH=freebsdia32
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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
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## contributors
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Please run ```git update-index --assume-unchanged bin/ngrok``` to not override [ngrok stub](https://github.com/bubenshchykov/ngrok/blob/master/bin/ngrok) in your pr. Unfortunately it can't be gitignored.
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