v1.9.0

Update yargs dependency to enable the new functionality.

.npmignore

@@ -0,0 +1 @@
+support

.travis.yml

@@ -1,3 +1,6 @@
 language: node_js
 node_js:
-    - 0.8
+    - "4"
+    - "6"
+    - "8"
+    - "9"

History.md

@@ -0,0 +1,57 @@
+# 1.9.0 (2018-04-03)
+
+* Add _request_ event to Tunnel emitter
+* Update yargs to support config via environment variables
+* Add basic request logging when --print-requests argument is used
+
+# 1.8.3 (2017-06-11)
+
+* update request dependency
+* update debug dependency
+* update openurl dependency
+
+# 1.8.2 (2016-11-17)
+
+* fix host header transform
+* update request dependency
+
+# 1.8.1 (2016-01-20)
+
+* fix bug w/ HostHeaderTransformer and binary data
+
+# 1.8.0 (2015-11-04)
+
+* pass socket errors up to top level
+
+# 1.7.0 (2015-07-22)
+
+* add short arg options
+
+# 1.6.0 (2015-05-15)
+
+* keep sockets alive after connecting
+* add --open param to CLI
+
+# 1.5.0 (2014-10-25)
+
+* capture all errors on remote socket and restart the tunnel
+
+# 1.4.0 (2014-08-31)
+
+* don't emit errors for ETIMEDOUT
+
+# 1.2.0 / 2014-04-28
+
+* return `client` from `localtunnel` API instantiation
+
+# 1.1.0 / 2014-02-24
+
+* add a host header transform to change the 'Host' header in requests
+
+# 1.0.0 / 2014-02-14
+
+* default to localltunnel.me for host
+* remove exported `connect` method (just export one function that does the same thing)
+* change localtunnel signature to (port, opt, fn)
+
+# 0.2.2 / 2014-01-09

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Roman Shtylman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,8 +1,10 @@
-# localtunnel [![Build Status](https://secure.travis-ci.org/shtylman/localtunnel.png)](http://travis-ci.org/shtylman/localtunnel) #
+# localtunnel
+
+[![Build Status](https://travis-ci.org/localtunnel/localtunnel.svg?branch=master)](https://travis-ci.org/localtunnel/localtunnel)
 
 localtunnel exposes your localhost to the world for easy testing and sharing! No need to mess with DNS or deploy just to have others test out your changes.
 
-Great for working with browser testing tools like browserling or external api callback services like twilio which require a public url for callbacks!
+Great for working with browser testing tools like browserling or external api callback services like twilio which require a public url for callbacks.
 
 ## installation ##
 
@@ -10,9 +12,11 @@ Great for working with browser testing tools like browserling or external api ca
 npm install -g localtunnel
 ```
 
+This will install the localtunnel module globally and add the 'lt' client cli tool to your PATH.
+
 ## use ##
 
-Super East! Assuming your local server is running on port 8000, just use the ```lt``` command to start the tunnel.
+Assuming your local server is running on port 8000, just use the ```lt``` command to start the tunnel.
 
 ```
 lt --port 8000
@@ -22,27 +26,75 @@ Thats it! It will connect to the tunnel server, setup the tunnel, and tell you w
 
 You can restart your local server all you want, ```lt``` is smart enough to detect this and reconnect once it is back.
 
+### arguments
+
+Below are some common arguments. See `lt --help` for additional arguments
+
+* `--subdomain` request a named subdomain on the localtunnel server (default is random characters)
+* `--local-host` proxy to a hostname other than localhost
+
+You may also specify arguments via env variables.  E.x.
+
+```
+PORT=3000 lt
+```
+
 ## API ##
 
-The localtunnel client is also usable through an API (test integration, automation, etc)
+The localtunnel client is also usable through an API (for test integration, automation, etc)
+
+### localtunnel(port [,opts], fn)
+
+Creates a new localtunnel to the specified local `port`. `fn` will be called once you have been assigned a public localtunnel url. `opts` can be used to request a specific `subdomain`.
 
 ```javascript
-var lt_client = require('localtunnel').client;
+var localtunnel = require('localtunnel');
 
-var client = lt_client.connect({
-    // the localtunnel server
-    host: 'http://localtunnel.com',
-    // your local application port
-    port: 12345
+var tunnel = localtunnel(port, function(err, tunnel) {
+    if (err) ...
+
+    // the assigned public url for your tunnel
+    // i.e. https://abcdefgjhij.localtunnel.me
+    tunnel.url;
 });
 
-// when your are assigned a url
-client.on('url', function(url) {
-    // you can now make http requests to the url
-    // they will be proxied to your local server on port [12345]
-});
-
-client.on('error', function(err) {
-    // uh oh!
+tunnel.on('close', function() {
+    // tunnels are closed
 });
 ```
+
+### opts
+
+* `subdomain` A *string* value requesting a specific subdomain on the proxy server. **Note** You may not actually receive this name depending on availability.
+* `local_host` Proxy to this hostname instead of `localhost`. This will also cause the `Host` header to be re-written to this value in proxied requests.
+
+### Tunnel
+
+The `tunnel` instance returned to your callback emits the following events
+
+|event|args|description|
+|----|----|----|
+|request|info|fires when a request is processed by the tunnel, contains _method_ and _path_ fields|
+|error|err|fires when an error happens on the tunnel|
+|close||fires when the tunnel has closed|
+
+The `tunnel` instance has the following methods
+
+|method|args|description|
+|----|----|----|
+|close||close the tunnel|
+
+## other clients ##
+
+Clients in other languages
+
+*go* [gotunnelme](https://github.com/NoahShen/gotunnelme)
+
+*go* [go-localtunnel](https://github.com/localtunnel/go-localtunnel)
+
+## server ##
+
+See [localtunnel/server](//github.com/localtunnel/server) for details on the server that powers localtunnel.
+
+## License ##
+MIT

bin/client

@@ -1,34 +1,75 @@
 #!/usr/bin/env node
-var lt_client = require(__dirname + '/../client');
+var lt_client = require('../client');
+var open_url = require('openurl');
 
-var argv = require('optimist')
-    .usage('Usage: $0 --port [num]')
-    .demand(['port'])
-    .options('host', {
-        default: 'http://localtunnel.me',
-        describe: 'upstream server providing forwarding'
+var argv = require('yargs')
+    .usage('Usage: $0 --port [num] <options>')
+    .env(true)
+    .option('h', {
+        alias: 'host',
+        describe: 'Upstream server providing forwarding',
+        default: 'https://localtunnel.me',
     })
-    .options('subdomain', {
-        describe: 'request this subdomain'
+    .option('s', {
+        alias: 'subdomain',
+        describe: 'Request this subdomain'
     })
-    .describe('port', 'internal http server port')
+    .option('l', {
+        alias: 'local-host',
+        describe: 'Tunnel traffic to this host instead of localhost, override Host header to this host'
+    })
+    .options('o', {
+        alias: 'open',
+        describe: 'opens url in your browser'
+    })
+    .option('p', {
+        alias: 'port',
+        describe: 'Internal http server port',
+    })
+    .option('print-requests', {
+        describe: 'Print basic request info',
+    })
+    .require('port')
+    .boolean('print-requests')
+    .help('help', 'Show this help and exit')
+    .version(require('../package').version)
     .argv;
 
+if (typeof argv.port !== 'number') {
+    require('yargs').showHelp();
+    console.error('port must be a number');
+    process.exit(1);
+}
+
 var opt = {
     host: argv.host,
     port: argv.port,
+    local_host: argv['local-host'],
     subdomain: argv.subdomain,
-}
+};
 
-var client = lt_client.connect(opt);
+const PrintRequests = argv['print-requests'];
 
-// only emitted when the url changes
-client.on('url', function(url) {
-    console.log('your url is: %s', url);
-});
+lt_client(opt.port, opt, function(err, tunnel) {
+    if (err) {
+        throw err;
+    }
 
-client.on('error', function(err) {
-    console.error(err);
+    console.log('your url is: %s', tunnel.url);
+
+    if (argv.open) {
+        open_url.open(tunnel.url);
+    }
+
+    tunnel.on('error', function(err) {
+        throw err;
+    });
+
+    if (PrintRequests) {
+        tunnel.on('request', function(info) {
+            console.log(new Date().toString(), info.method, info.path);
+        });
+    }
 });
 
 // vim: ft=javascript

bin/server

@@ -1,33 +0,0 @@
-#!/usr/bin/env node
-
-// vendor
-var log = require('book');
-var optimist = require('optimist');
-
-var argv = optimist
-    .usage('Usage: $0 --port [num]')
-    .options('port', {
-        default: '80',
-        describe: 'listen on this port for outside requests'
-    })
-    .argv;
-
-if (argv.help) {
-    optimist.showHelp();
-    process.exit();
-}
-
-process.once('uncaughtException', function(err) {
-    log.panic(err);
-    process.exit(-1);
-    return;
-});
-
-var server = require('../server');
-
-server.listen(argv.port, function() {
-    log.info('server listening on port: %d', server.address().port);
-});
-
-// vim: ft=javascript
-

client.js

@@ -1,133 +1,24 @@
-// builtin
-var net = require('net');
-var url = require('url');
-var request = require('request');
 var EventEmitter = require('events').EventEmitter;
+var debug = require('debug')('localtunnel:client');
 
-// request upstream url and connection info
-var request_url = function(params, cb) {
-    request(params, function(err, res, body) {
+var Tunnel = require('./lib/Tunnel');
+
+module.exports = function localtunnel(port, opt, fn) {
+    if (typeof opt === 'function') {
+        fn = opt;
+        opt = {};
+    }
+
+    opt = opt || {};
+    opt.port = port;
+
+    var client = Tunnel(opt);
+    client.open(function(err) {
         if (err) {
-            cb(err);
+            return fn(err);
         }
 
-        cb(null, body);
+        fn(null, client);
     });
+    return client;
 };
-
-var connect = function(opt) {
-    var ev = new EventEmitter();
-
-    // local port
-    var local_port = opt.port;
-
-    var base_uri = opt.host + '/';
-
-    // optionally override the upstream server
-    var upstream = url.parse(opt.host);
-
-    // no subdomain at first, maybe use requested domain
-    var assigned_domain = opt.subdomain;
-
-    // connect to upstream given connection parameters
-    var tunnel = function (remote_host, remote_port, max_conn) {
-        var count = 0;
-
-        // open 5 connections to the localtunnel server
-        // allows for resources to be served faster
-        for (var count = 0 ; count < max_conn ; ++count) {
-            var upstream = duplex(remote_host, remote_port, 'localhost', local_port);
-            upstream.once('end', function() {
-                // all upstream connections have been closed
-                if (--count <= 0) {
-                    tunnel(remote_host, remote_port, max_conn);
-                }
-            });
-
-            upstream.on('error', function(err) {
-                console.error(err);
-            });
-        }
-    };
-
-    var params = {
-        path: '/',
-        json: true
-    };
-
-    // where to quest
-    params.uri = base_uri + ((assigned_domain) ? assigned_domain : '?new');
-
-    request_url(params, function(err, body) {
-
-        if (err) {
-            ev.emit('error', new Error('tunnel server not available: %s, retry 1s', err.message));
-
-            // retry interval for id request
-            return setTimeout(function() {
-                connect_proxy(opt);
-            }, 1000);
-        }
-
-        // our assigned hostname and tcp port
-        var port = body.port;
-        var host = upstream.hostname;
-
-        // store the id so we can try to get the same one
-        assigned_domain = body.id;
-
-        tunnel(host, port, body.max_conn_count || 1);
-
-        ev.emit('url', body.url);
-    });
-
-    return ev;
-};
-
-var duplex = function(remote_host, remote_port, local_host, local_port) {
-    var ev = new EventEmitter();
-
-    // connect to remote tcp server
-    var upstream = net.createConnection(remote_port, remote_host);
-    var internal;
-
-    // when upstream connection is closed, close other associated connections
-    upstream.once('end', function() {
-        ev.emit('error', new Error('upstream connection terminated'));
-
-        // sever connection to internal server
-        // on reconnect we will re-establish
-        internal.end();
-
-        ev.emit('end');
-    });
-
-    upstream.on('error', function(err) {
-        ev.emit('error', err);
-    });
-
-    (function connect_internal() {
-
-        internal = net.createConnection(local_port, local_host);
-        internal.on('error', function() {
-            ev.emit('error', new Error('error connecting to local server. retrying in 1s'));
-            setTimeout(function() {
-                connect_internal();
-            }, 1000);
-        });
-
-        internal.on('end', function() {
-            ev.emit('error', new Error('disconnected from local server. retrying in 1s'));
-            setTimeout(function() {
-                connect_internal();
-            }, 1000);
-        });
-
-        upstream.pipe(internal).pipe(upstream);
-    })();
-
-    return ev;
-}
-
-module.exports.connect = connect;
-

lib/HeaderHostTransformer.js

@@ -0,0 +1,39 @@
+var stream = require('stream');
+var util = require('util');
+
+var Transform = stream.Transform;
+
+var HeaderHostTransformer = function(opts) {
+    if (!(this instanceof HeaderHostTransformer)) {
+        return new HeaderHostTransformer(opts);
+    }
+
+    opts = opts || {}
+    Transform.call(this, opts);
+
+    var self = this;
+    self.host = opts.host || 'localhost';
+    self.replaced = false;
+}
+util.inherits(HeaderHostTransformer, Transform);
+
+HeaderHostTransformer.prototype._transform = function (chunk, enc, cb) {
+    var self = this;
+
+    // after replacing the first instance of the Host header
+    // we just become a regular passthrough
+    if (!self.replaced) {
+        chunk = chunk.toString();
+        self.push(chunk.replace(/(\r\n[Hh]ost: )\S+/, function(match, $1) {
+            self.replaced = true;
+            return $1 + self.host;
+        }));
+    }
+    else {
+        self.push(chunk);
+    }
+
+    cb();
+};
+
+module.exports = HeaderHostTransformer;

lib/Tunnel.js

@@ -0,0 +1,158 @@
+var url = require('url');
+var EventEmitter = require('events').EventEmitter;
+var axios = require('axios');
+var debug = require('debug')('localtunnel:client');
+
+var TunnelCluster = require('./TunnelCluster');
+
+var Tunnel = function(opt) {
+    if (!(this instanceof Tunnel)) {
+        return new Tunnel(opt);
+    }
+
+    var self = this;
+    self._closed = false;
+    self._opt = opt || {};
+
+    self._opt.host = self._opt.host || 'https://localtunnel.me';
+};
+
+Tunnel.prototype.__proto__ = EventEmitter.prototype;
+
+// initialize connection
+// callback with connection info
+Tunnel.prototype._init = function(cb) {
+    var self = this;
+    var opt = self._opt;
+
+    var params = {
+        responseType: 'json'
+    };
+
+    var base_uri = opt.host + '/';
+
+    // optionally override the upstream server
+    var upstream = url.parse(opt.host);
+
+    // no subdomain at first, maybe use requested domain
+    var assigned_domain = opt.subdomain;
+
+    // where to quest
+    var uri = base_uri + ((assigned_domain) ? assigned_domain : '?new');
+
+    (function get_url() {
+        axios.get(uri, params)
+        .then(function(res){
+            var body = res.data;
+            if (res.status !== 200) {
+                var err =  new Error((body && body.message) || 'localtunnel server returned an error, please try again');
+                return cb(err);
+            }
+            var port = body.port;
+            var host = upstream.hostname;
+            var max_conn = body.max_conn_count || 1;
+            cb(null, {
+                remote_host: upstream.hostname,
+                remote_port: body.port,
+                name: body.id,
+                url: body.url,
+                max_conn: max_conn
+            });
+        })
+        .catch(function(err){
+            // TODO (shtylman) don't print to stdout?
+            console.log('tunnel server offline: ' + err.message + ', retry 1s');
+            return setTimeout(get_url, 1000);
+        })
+    })();
+};
+
+Tunnel.prototype._establish = function(info) {
+    var self = this;
+    var opt = self._opt;
+
+    // increase max event listeners so that localtunnel consumers don't get
+    // warning messages as soon as they setup even one listener. See #71
+    self.setMaxListeners(info.max_conn + (EventEmitter.defaultMaxListeners || 10));
+
+    info.local_host = opt.local_host;
+    info.local_port = opt.port;
+
+    var tunnels = self.tunnel_cluster = TunnelCluster(info);
+
+    // only emit the url the first time
+    tunnels.once('open', function() {
+        self.emit('url', info.url);
+    });
+
+    // re-emit socket error
+    tunnels.on('error', function(err) {
+        self.emit('error', err);
+    });
+
+    var tunnel_count = 0;
+
+    // track open count
+    tunnels.on('open', function(tunnel) {
+        tunnel_count++;
+        debug('tunnel open [total: %d]', tunnel_count);
+
+        var close_handler = function() {
+            tunnel.destroy();
+        };
+
+        if (self._closed) {
+            return close_handler();
+        }
+
+        self.once('close', close_handler);
+        tunnel.once('close', function() {
+            self.removeListener('close', close_handler);
+        });
+    });
+
+    // when a tunnel dies, open a new one
+    tunnels.on('dead', function(tunnel) {
+        tunnel_count--;
+        debug('tunnel dead [total: %d]', tunnel_count);
+
+        if (self._closed) {
+            return;
+        }
+
+        tunnels.open();
+    });
+
+    tunnels.on('request', function(info) {
+        self.emit('request', info);
+    });
+
+    // establish as many tunnels as allowed
+    for (var count = 0 ; count < info.max_conn ; ++count) {
+        tunnels.open();
+    }
+};
+
+Tunnel.prototype.open = function(cb) {
+    var self = this;
+
+    self._init(function(err, info) {
+        if (err) {
+            return cb(err);
+        }
+
+        self.url = info.url;
+        self._establish(info);
+        cb();
+    });
+};
+
+// shutdown tunnels
+Tunnel.prototype.close = function() {
+    var self = this;
+
+    self._closed = true;
+    self.emit('close');
+};
+
+module.exports = Tunnel;

lib/TunnelCluster.js

@@ -0,0 +1,133 @@
+var EventEmitter = require('events').EventEmitter;
+var debug = require('debug')('localtunnel:client');
+var net = require('net');
+
+var HeaderHostTransformer = require('./HeaderHostTransformer');
+
+// manages groups of tunnels
+var TunnelCluster = function(opt) {
+    if (!(this instanceof TunnelCluster)) {
+        return new TunnelCluster(opt);
+    }
+
+    var self = this;
+    self._opt = opt;
+
+    EventEmitter.call(self);
+};
+
+TunnelCluster.prototype.__proto__ = EventEmitter.prototype;
+
+// establish a new tunnel
+TunnelCluster.prototype.open = function() {
+    var self = this;
+
+    var opt = self._opt || {};
+
+    var remote_host = opt.remote_host;
+    var remote_port = opt.remote_port;
+
+    var local_host = opt.local_host || 'localhost';
+    var local_port = opt.local_port;
+
+    debug('establishing tunnel %s:%s <> %s:%s', local_host, local_port, remote_host, remote_port);
+
+    // connection to localtunnel server
+    var remote = net.connect({
+        host: remote_host,
+        port: remote_port
+    });
+
+    remote.setKeepAlive(true);
+
+    remote.on('error', function(err) {
+        // emit connection refused errors immediately, because they
+        // indicate that the tunnel can't be established.
+        if (err.code === 'ECONNREFUSED') {
+            self.emit('error', new Error('connection refused: ' + remote_host + ':' + remote_port + ' (check your firewall settings)'));
+        }
+
+        remote.end();
+    });
+
+    function conn_local() {
+        if (remote.destroyed) {
+            debug('remote destroyed');
+            self.emit('dead');
+            return;
+        }
+
+        debug('connecting locally to %s:%d', local_host, local_port);
+        remote.pause();
+
+        // connection to local http server
+        var local = net.connect({
+            host: local_host,
+            port: local_port
+        });
+
+        function remote_close() {
+            debug('remote close');
+            self.emit('dead');
+            local.end();
+        };
+
+        remote.once('close', remote_close);
+
+        // TODO some languages have single threaded servers which makes opening up
+        // multiple local connections impossible. We need a smarter way to scale
+        // and adjust for such instances to avoid beating on the door of the server
+        local.once('error', function(err) {
+            debug('local error %s', err.message);
+            local.end();
+
+            remote.removeListener('close', remote_close);
+
+            if (err.code !== 'ECONNREFUSED') {
+                return remote.end();
+            }
+
+            // retrying connection to local server
+            setTimeout(conn_local, 1000);
+        });
+
+        local.once('connect', function() {
+            debug('connected locally');
+            remote.resume();
+
+            var stream = remote;
+
+            // if user requested specific local host
+            // then we use host header transform to replace the host header
+            if (opt.local_host) {
+                debug('transform Host header to %s', opt.local_host);
+                stream = remote.pipe(HeaderHostTransformer({ host: opt.local_host }));
+            }
+
+            stream.pipe(local).pipe(remote);
+
+            // when local closes, also get a new remote
+            local.once('close', function(had_error) {
+                debug('local connection closed [%s]', had_error);
+            });
+        });
+    }
+
+    remote.on('data', function(data) {
+        const match = data.toString().match(/^(\w+) (\S+)/);
+        if (match) {
+            self.emit('request', {
+                method: match[1],
+                path: match[2],
+            });
+        }
+    });
+
+    // tunnel is considered open when remote connects
+    remote.once('connect', function() {
+        self.emit('open', remote);
+        conn_local();
+    });
+};
+
+module.exports = TunnelCluster;

lib/rand_id.js

@@ -1,12 +0,0 @@
-
-var chars = 'abcdefghiklmnopqrstuvwxyz';
-module.exports = function rand_id() {
-    var randomstring = '';
-    for (var i=0; i<4; ++i) {
-        var rnum = Math.floor(Math.random() * chars.length);
-        randomstring += chars[rnum];
-    }
-
-    return randomstring;
-}
-

package.json

@@ -2,28 +2,26 @@
   "author": "Roman Shtylman <shtylman@gmail.com>",
   "name": "localtunnel",
   "description": "expose localhost to the world",
-  "version": "0.0.2",
+  "version": "1.9.0",
+  "license": "MIT",
   "repository": {
     "type": "git",
-    "url": "git://github.com/shtylman/localtunnel.git"
+    "url": "git://github.com/localtunnel/localtunnel.git"
   },
   "dependencies": {
-    "request": "2.11.4",
-    "book": "1.2.0",
-    "optimist": "0.3.4"
+    "axios": "0.17.1",
+    "debug": "2.6.8",
+    "openurl": "1.1.1",
+    "yargs": "6.6.0"
   },
   "devDependencies": {
-    "mocha": "1.6.0"
-  },
-  "optionalDependencies": {},
-  "engines": {
-    "node": "*"
+    "mocha": "~1.17.0"
   },
   "scripts": {
-    "test": "mocha --ui qunit -- test",
-    "start": "./bin/server"
+    "test": "mocha --ui qunit --reporter list --timeout 10000 -- test/index.js"
   },
   "bin": {
     "lt": "./bin/client"
-  }
-}
+  },
+  "main": "./client.js"
+}

server.js

@@ -1,390 +0,0 @@
-
-// builtin
-var http = require('http');
-var net = require('net');
-var url = require('url');
-
-// here be dragons
-var HTTPParser = process.binding('http_parser').HTTPParser;
-var ServerResponse = http.ServerResponse;
-var IncomingMessage = http.IncomingMessage;
-
-// vendor
-var log = require('book');
-
-// local
-var rand_id = require('./lib/rand_id');
-
-var server = http.createServer();
-
-// id -> client http server
-var clients = {};
-
-// available parsers
-var parsers = http.parsers;
-
-// data going back to a client (the last client that made a request)
-function socketOnData(d, start, end) {
-
-    var socket = this;
-    var req = this._httpMessage;
-
-    var response_socket = socket.respond_socket;
-    if (!response_socket) {
-        log.error('no response socket assigned for http response from backend');
-        return;
-    }
-
-    // pass the response from our client back to the requesting socket
-    response_socket.write(d.slice(start, end));
-
-    if (socket.for_websocket) {
-        return;
-    }
-
-    // invoke parsing so we know when the response is complete
-    var parser = response_socket.out_parser;
-    parser.socket = socket;
-
-    var ret = parser.execute(d, start, end - start);
-    if (ret instanceof Error) {
-        log.error(ret);
-        freeParser(parser, req);
-        socket.destroy(ret);
-    }
-}
-
-function freeParser(parser, req) {
-    if (parser) {
-        parser._headers = [];
-        parser.onIncoming = null;
-        if (parser.socket) {
-            parser.socket.onend = null;
-            parser.socket.ondata = null;
-            parser.socket.parser = null;
-        }
-        parser.socket = null;
-        parser.incoming = null;
-        parsers.free(parser);
-        parser = null;
-    }
-    if (req) {
-        req.parser = null;
-    }
-}
-
-// single http connection
-// gets a single http response back
-server.on('connection', function(socket) {
-
-    var self = this;
-
-    // parser handles incoming requests for the socket
-    // the request is what lets us know if we proxy or not
-    var parser = parsers.alloc();
-    parser.socket = socket;
-    parser.reinitialize(HTTPParser.REQUEST);
-
-    function our_request(req) {
-        var res = new ServerResponse(req);
-        res.assignSocket(socket);
-        self.emit('request', req, res);
-        return;
-    }
-
-    // a full request is complete
-    // we wait for the response from the server
-    parser.onIncoming = function(req, shouldKeepAlive) {
-
-        log.trace('request', req.url);
-
-        // default is that the data is not for the client
-        delete parser.sock;
-        delete parser.buffer;
-        delete parser.client;
-
-        var hostname = req.headers.host;
-        if (!hostname) {
-            log.trace('no hostname: %j', req.headers);
-            return our_request(req);
-        }
-
-        var match = hostname.match(/^([a-z]{4})[.].*/);
-        if (!match) {
-            return our_request(req);
-        }
-
-        var client_id = match[1];
-        var client = clients[client_id];
-
-        // requesting a subdomain that doesn't exist
-        if (!client) {
-            return socket.end();
-        }
-
-        parser.client = client;
-
-        // assigned socket for the client
-        var sock = client.sockets.shift();
-
-        // no free sockets, queue
-        if (!sock) {
-            parser.buffer = true;
-            return;
-        }
-
-        // for tcp proxying
-        parser.sock = sock;
-
-        // set who we will respond back to
-        sock.respond_socket = socket;
-
-        var out_parser = parsers.alloc();
-        out_parser.reinitialize(HTTPParser.RESPONSE);
-        socket.out_parser = out_parser;
-
-        // we have completed a response
-        // the tcp socket is free again
-        out_parser.onIncoming = function (res) {
-            res.on('end', function() {
-                log.trace('done with response for: %s', req.url);
-
-                // done with the parser
-                parsers.free(out_parser);
-
-                // unset the response
-                delete sock.respond_socket;
-
-                var next = client.waiting.shift();
-                if (!next) {
-                    // return socket to available
-                    client.sockets.push(sock);
-                    return;
-                }
-
-                // reuse avail socket for next connection
-                sock.respond_socket = next;
-
-                // needed to know when this response will be done
-                out_parser.reinitialize(HTTPParser.RESPONSE);
-                next.out_parser = out_parser;
-
-                // write original bytes we held cause we were busy
-                sock.write(next.queue);
-
-                // continue with other bytes
-                next.resume();
-
-                return;
-            });
-        };
-    };
-
-    // process new data on the client socket
-    // we may need to forward this it the backend
-    socket.ondata = function(d, start, end) {
-
-        // run through request parser to determine if we should pass to tcp
-        // onIncoming will be run before this returns
-        var ret = parser.execute(d, start, end - start);
-
-        // invalid request from the user
-        if (ret instanceof Error) {
-            log.error(ret);
-            socket.destroy(ret);
-            return;
-        }
-
-        // websocket stuff
-        if (parser.incoming && parser.incoming.upgrade) {
-            log.trace('upgrade request');
-
-            parser.finish();
-
-            var hostname = parser.incoming.headers.host;
-
-            var match = hostname.match(/^([a-z]{4})[.].*/);
-            if (!match) {
-                return our_request(req);
-            }
-
-            var client_id = match[1];
-            var client = clients[client_id];
-
-            var sock = client.sockets.shift();
-            sock.respond_socket = socket;
-            sock.for_websocket = true;
-
-            socket.ondata = function(d, start, end) {
-                sock.write(d.slice(start, end));
-            };
-
-            socket.end = function() {
-                log.trace('websocket end');
-
-                delete sock.respond_socket;
-                client.sockets.push(sock);
-            }
-
-            sock.write(d.slice(start, end));
-
-            return;
-        }
-
-        // if no available socket, buffer the request for later
-        if (parser.buffer) {
-
-            // pause any further data on this socket
-            socket.pause();
-
-            // copy the current data since we have already received it
-            var copy = Buffer(end - start);
-            d.copy(copy, 0, start, end);
-            socket.queue = copy;
-
-            // add socket to queue
-            parser.client.waiting.push(socket);
-
-            return;
-        }
-
-        if (!parser.sock) {
-            return;
-        }
-
-        // assert, respond socket should be set
-
-        // send through tcp tunnel
-        // responses will go back to the respond_socket
-        parser.sock.write(d.slice(start, end));
-    };
-
-    socket.onend = function() {
-        var ret = parser.finish();
-
-        if (ret instanceof Error) {
-            log.error(ret);
-            socket.destroy(ret);
-            return;
-        }
-
-        socket.end();
-    };
-
-    socket.on('close', function() {
-        parsers.free(parser);
-    });
-});
-
-server.on('request', function(req, res) {
-
-    // ignore favicon
-    if (req.url === '/favicon.ico') {
-        res.writeHead(404);
-        return res.end();
-    }
-
-    var parsed = url.parse(req.url, true);
-
-    // redirect main page to github reference
-    if (req.url === '/' && !parsed.query.new) {
-        res.writeHead(301, { Location: 'http://shtylman.github.com/localtunnel/' });
-        res.end();
-        return;
-    }
-
-    // at this point, the client is requesting a new tunnel setup
-    // either generate an id or use the one they requested
-
-    var match = req.url.match(/\/([a-z]{4})?/);
-
-    // user can request a particular set of characters
-    // will be given if not already taken
-    // this is useful when the main server is restarted
-    // users can keep testing with their expected ids
-    var requested_id;
-    if (match && match[1]) {
-        requested_id = match[1];
-    }
-
-    var id = requested_id || rand_id();
-
-    // maximum number of tcp connections the client can setup
-    // each tcp channel allows for more parallel requests
-    var max_tcp_sockets = 4;
-
-    // sockets is a list of available sockets for the connection
-    // waiting is?
-    var client = clients[id] = {
-        sockets: [],
-        waiting: []
-    };
-
-    var client_server = net.createServer();
-    client_server.listen(function() {
-        var port = client_server.address().port;
-        log.info('tcp server listening on port: %d', port);
-
-        var url = 'http://' + id + '.' + req.headers.host;
-
-        res.writeHead(200, { 'Content-Type': 'application/json' });
-        res.end(JSON.stringify({
-            url: url,
-            id: id,
-            port: port,
-            max_conn_count: max_tcp_sockets
-        }));
-    });
-
-    // user has 5 seconds to connect before their slot is given up
-    var conn_timeout = setTimeout(function() {
-        client_server.close();
-    }, 5000);
-
-    // no longer accepting connections for this id
-    client_server.on('close', function() {
-        delete clients[id];
-    });
-
-    var count = 0;
-    client_server.on('connection', function(socket) {
-
-        // no more socket connections allowed
-        if (count++ >= max_tcp_sockets) {
-            return socket.end();
-        }
-
-        log.trace('new connection for id: %s', id);
-
-        // multiplexes socket data out to clients
-        socket.ondata = socketOnData;
-
-        // no need to close the client server
-        clearTimeout(conn_timeout);
-
-        // add socket to pool for this id
-        var idx = client.sockets.push(socket) - 1;
-
-        socket.on('close', function(had_error) {
-            count--;
-            client.sockets.splice(idx, 1);
-
-            // no more sockets for this ident
-            if (client.sockets.length === 0) {
-                delete clients[id];
-            }
-        });
-
-        // close will be emitted after this
-        socket.on('error', function(err) {
-            log.error(err);
-        });
-    });
-
-    client_server.on('error', function(err) {
-        log.error(err);
-    });
-});
-
-module.exports = server;
-

test.js

@@ -1,95 +0,0 @@
-var http = require('http');
-var url = require('url');
-var assert = require('assert');
-
-var localtunnel_server = require('./server');
-var localtunnel_client = require('./client');
-
-test('setup localtunnel server', function(done) {
-    localtunnel_server.listen(3000, function() {
-        console.log('lt server on:', 3000);
-        done();
-    });
-});
-
-test('setup local http server', function(done) {
-    var server = http.createServer();
-    server.on('request', function(req, res) {
-        res.write('foo');
-        res.end();
-    });
-    server.listen(function() {
-        var port = server.address().port;
-
-        test._fake_port = port;
-        console.log('local http on:', port);
-        done();
-    });
-});
-
-test('setup localtunnel client', function(done) {
-    var client = localtunnel_client.connect({
-        host: 'http://localhost:' + 3000,
-        port: test._fake_port
-    });
-
-    client.on('url', function(url) {
-        assert.ok(/^http:\/\/.*localhost:3000$/.test(url));
-        test._fake_url = url;
-        done();
-    });
-
-    client.on('error', function(err) {
-        console.error(err);
-    });
-});
-
-test('query localtunnel server w/ ident', function(done) {
-    var uri = test._fake_url;
-    var hostname = url.parse(uri).hostname;
-
-    var opt = {
-        host: 'localhost',
-        port: 3000,
-        headers: {
-            host: hostname
-        },
-        path: '/'
-    }
-
-    var req = http.request(opt, function(res) {
-        res.setEncoding('utf8');
-        var body = '';
-
-        res.on('data', function(chunk) {
-            body += chunk;
-        });
-
-        res.on('end', function() {
-            assert.equal('foo', body);
-
-            // TODO(shtylman) shutdown client
-            done();
-        });
-    });
-
-    req.end();
-});
-
-test('request specific domain', function(done) {
-    var client = localtunnel_client.connect({
-        host: 'http://localhost:' + 3000,
-        port: test._fake_port,
-        subdomain: 'abcd'
-    });
-
-    client.on('url', function(url) {
-        assert.ok(/^http:\/\/abcd.localhost:3000$/.test(url));
-        done();
-    });
-
-    client.on('error', function(err) {
-        console.error(err);
-    });
-});
-

test/index.js

@@ -0,0 +1,188 @@
+var http = require('http');
+var https = require('https');
+var url = require('url');
+var assert = require('assert');
+
+var localtunnel = require('../');
+
+test('setup local http server', function(done) {
+    var server = http.createServer();
+    server.on('request', function(req, res) {
+        res.write(req.headers.host);
+        res.end();
+    });
+    server.listen(function() {
+        var port = server.address().port;
+
+        test._fake_port = port;
+        console.log('local http on:', port);
+        done();
+    });
+});
+
+test('setup localtunnel client', function(done) {
+    localtunnel(test._fake_port, function(err, tunnel) {
+        assert.ifError(err);
+        assert.ok(new RegExp('^https:\/\/.*localtunnel.me' + '$').test(tunnel.url));
+        test._fake_url = tunnel.url;
+        done();
+    });
+});
+
+test('query localtunnel server w/ ident', function(done) {
+    var uri = test._fake_url;
+    var parsed = url.parse(uri);
+
+    var opt = {
+        host: parsed.host,
+        port: 443,
+        headers: {
+            host: parsed.hostname
+        },
+        path: '/'
+    };
+
+    var req = https.request(opt, function(res) {
+        res.setEncoding('utf8');
+        var body = '';
+
+        res.on('data', function(chunk) {
+            body += chunk;
+        });
+
+        res.on('end', function() {
+            assert(/.*[.]localtunnel[.]me/.test(body), body);
+            done();
+        });
+    });
+
+    req.end();
+});
+
+test('request specific domain', function(done) {
+    localtunnel(test._fake_port, { subdomain: 'abcd' }, function(err, tunnel) {
+        assert.ifError(err);
+        assert.ok(new RegExp('^https:\/\/abcd.localtunnel.me' + '$').test(tunnel.url));
+        tunnel.close();
+        done();
+    });
+});
+
+suite('--local-host localhost');
+
+test('setup localtunnel client', function(done) {
+    var opt = {
+        local_host: 'localhost'
+    };
+    localtunnel(test._fake_port, opt, function(err, tunnel) {
+        assert.ifError(err);
+        assert.ok(new RegExp('^https:\/\/.*localtunnel.me' + '$').test(tunnel.url));
+        test._fake_url = tunnel.url;
+        done();
+    });
+});
+
+test('override Host header with local-host', function(done) {
+    var uri = test._fake_url;
+    var parsed = url.parse(uri);
+
+    var opt = {
+        host: parsed.host,
+        port: 443,
+        headers: {
+            host: parsed.hostname
+        },
+        path: '/'
+    };
+
+    var req = https.request(opt, function(res) {
+        res.setEncoding('utf8');
+        var body = '';
+
+        res.on('data', function(chunk) {
+            body += chunk;
+        });
+
+        res.on('end', function() {
+            assert.equal(body, 'localhost');
+            done();
+        });
+    });
+
+    req.end();
+});
+
+suite('--local-host 127.0.0.1');
+
+test('setup localtunnel client', function(done) {
+    var opt = {
+        local_host: '127.0.0.1'
+    };
+    localtunnel(test._fake_port, opt, function(err, tunnel) {
+        assert.ifError(err);
+        assert.ok(new RegExp('^https:\/\/.*localtunnel.me' + '$').test(tunnel.url));
+        test._fake_url = tunnel.url;
+        done();
+    });
+});
+
+test('override Host header with local-host', function(done) {
+    var uri = test._fake_url;
+    var parsed = url.parse(uri);
+
+    var opt = {
+        host: parsed.host,
+        port: 443,
+        headers: {
+            host: parsed.hostname
+        },
+        path: '/'
+    };
+
+    var req = https.request(opt, function(res) {
+        res.setEncoding('utf8');
+        var body = '';
+
+        res.on('data', function(chunk) {
+            body += chunk;
+        });
+
+        res.on('end', function() {
+            assert.equal(body, '127.0.0.1');
+            done();
+        });
+    });
+
+    req.end();
+});
+
+test('send chunked request', function(done) {
+    var uri = test._fake_url;
+    var parsed = url.parse(uri);
+
+    var opt = {
+        host: parsed.host,
+        port: 443,
+        headers: {
+            host: parsed.hostname,
+            'Transfer-Encoding': 'chunked'
+        },
+        path: '/'
+    };
+
+    var req = https.request(opt, function(res) {
+        res.setEncoding('utf8');
+        var body = '';
+
+        res.on('data', function(chunk) {
+            body += chunk;
+        });
+
+        res.on('end', function() {
+            assert.equal(body, '127.0.0.1');
+            done();
+        });
+    });
+
+    req.end(require('crypto').randomBytes(1024 * 8).toString('base64'));
+});

yarn.lock

@@ -0,0 +1,204 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+ansi-regex@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
+
+axios@0.17.1:
+  version "0.17.1"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.17.1.tgz#2d8e3e5d0bdbd7327f91bc814f5c57660f81824d"
+  dependencies:
+    follow-redirects "^1.2.5"
+    is-buffer "^1.1.5"
+
+camelcase@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-1.2.1.tgz#9bb5304d2e0b56698b2c758b08a3eaa9daa58a39"
+
+cliui@^3.0.3:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+    wrap-ansi "^2.0.0"
+
+code-point-at@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
+
+commander@0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-0.6.1.tgz#fa68a14f6a945d54dbbe50d8cdb3320e9e3b1a06"
+
+commander@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.0.0.tgz#d1b86f901f8b64bd941bdeadaf924530393be928"
+
+debug@*, debug@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
+debug@2.6.8:
+  version "2.6.8"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
+  dependencies:
+    ms "2.0.0"
+
+decamelize@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+
+diff@1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-1.0.7.tgz#24bbb001c4a7d5522169e7cabdb2c2814ed91cf4"
+
+follow-redirects@^1.2.5:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.4.1.tgz#d8120f4518190f55aac65bb6fc7b85fcd666d6aa"
+  dependencies:
+    debug "^3.1.0"
+
+glob@3.2.3:
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-3.2.3.tgz#e313eeb249c7affaa5c475286b0e115b59839467"
+  dependencies:
+    graceful-fs "~2.0.0"
+    inherits "2"
+    minimatch "~0.2.11"
+
+graceful-fs@~2.0.0:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-2.0.3.tgz#7cd2cdb228a4a3f36e95efa6cc142de7d1a136d0"
+
+growl@1.7.x:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/growl/-/growl-1.7.0.tgz#de2d66136d002e112ba70f3f10c31cf7c350b2da"
+
+inherits@2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+invert-kv@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
+
+is-buffer@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+
+is-fullwidth-code-point@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
+  dependencies:
+    number-is-nan "^1.0.0"
+
+jade@0.26.3:
+  version "0.26.3"
+  resolved "https://registry.yarnpkg.com/jade/-/jade-0.26.3.tgz#8f10d7977d8d79f2f6ff862a81b0513ccb25686c"
+  dependencies:
+    commander "0.6.1"
+    mkdirp "0.3.0"
+
+lcid@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-1.0.0.tgz#308accafa0bc483a3867b4b6f2b9506251d1b835"
+  dependencies:
+    invert-kv "^1.0.0"
+
+lru-cache@2:
+  version "2.7.3"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-2.7.3.tgz#6d4524e8b955f95d4f5b58851ce21dd72fb4e952"
+
+minimatch@~0.2.11:
+  version "0.2.14"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-0.2.14.tgz#c74e780574f63c6f9a090e90efbe6ef53a6a756a"
+  dependencies:
+    lru-cache "2"
+    sigmund "~1.0.0"
+
+mkdirp@0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.3.0.tgz#1bbf5ab1ba827af23575143490426455f481fe1e"
+
+mkdirp@0.3.5:
+  version "0.3.5"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.3.5.tgz#de3e5f8961c88c787ee1368df849ac4413eca8d7"
+
+mocha@~1.17.0:
+  version "1.17.1"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-1.17.1.tgz#7f7671d68526d074b7bae660c9099f87e0ea1ccb"
+  dependencies:
+    commander "2.0.0"
+    debug "*"
+    diff "1.0.7"
+    glob "3.2.3"
+    growl "1.7.x"
+    jade "0.26.3"
+    mkdirp "0.3.5"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+number-is-nan@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
+
+openurl@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/openurl/-/openurl-1.1.1.tgz#3875b4b0ef7a52c156f0db41d4609dbb0f94b387"
+
+os-locale@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-1.4.0.tgz#20f9f17ae29ed345e8bde583b13d2009803c14d9"
+  dependencies:
+    lcid "^1.0.0"
+
+sigmund@~1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/sigmund/-/sigmund-1.0.1.tgz#3ff21f198cad2175f9f3b781853fd94d0d19b590"
+
+string-width@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
+  dependencies:
+    code-point-at "^1.0.0"
+    is-fullwidth-code-point "^1.0.0"
+    strip-ansi "^3.0.0"
+
+strip-ansi@^3.0.0, strip-ansi@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  dependencies:
+    ansi-regex "^2.0.0"
+
+window-size@^0.1.2:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.4.tgz#f8e1aa1ee5a53ec5bf151ffa09742a6ad7697876"
+
+wrap-ansi@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+
+y18n@^3.2.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
+
+yargs@3.29.0:
+  version "3.29.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.29.0.tgz#1aab9660eae79d8b8f675bcaeeab6ee34c2cf69c"
+  dependencies:
+    camelcase "^1.2.1"
+    cliui "^3.0.3"
+    decamelize "^1.0.0"
+    os-locale "^1.4.0"
+    window-size "^0.1.2"
+    y18n "^3.2.0"