fix bad matching against subdomains

Match for valid subdomains versus anything that comes before a period.

fixes #7

package.json

@@ -26,7 +26,8 @@
     "bouncy": "3.2.1",
     "superstack": "0.0.4",
     "stylish": "0.4.1",
-    "makeover": "0.0.1"
+    "makeover": "0.0.1",
+    "tldjs": "1.3.1"
   },
   "devDependencies": {
     "mocha": "1.18.2",

server.js

@@ -8,6 +8,7 @@ var makeover = require('makeover');
 var makeup = require('makeup');
 var engine = require('engine.io');
 var browserkthx = require('browserkthx');
+var tldjs = require('tldjs');
 var debug = require('debug')('localtunnel-server');
 
 var Proxy = require('./proxy');
@@ -32,16 +33,12 @@ function maybe_bounce(req, res, bounce) {
         return false;
     }
 
-    // extract the subdomain, which is the client id
-    var match = hostname.match(/^([a-z0-9]+)[.].*/);
-
-    // not for a specific client
-    // pass on to regular server
-    if (!match) {
+    var subdomain = tldjs.getSubdomain(hostname);
+    if (!subdomain) {
         return false;
     }
 
-    var client_id = match[1];
+    var client_id = subdomain;
     var client = clients[client_id];
 
     // no such subdomain

test/basic.js

@@ -15,6 +15,33 @@ test('setup localtunnel server', function(done) {
     });
 });
 
+test('landing page', function(done) {
+    var opt = {
+        host: 'localhost',
+        port: lt_server_port,
+        headers: {
+            host: 'example.com'
+        },
+        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(body.indexOf('<h2>expose yourself to the world</h2>') > 0);
+            done();
+        });
+    });
+
+    req.end();
+});
+
 test('setup local http server', function(done) {
     var server = http.createServer();
     server.on('request', function(req, res) {
@@ -52,7 +79,7 @@ test('query localtunnel server w/ ident', function(done) {
         host: 'localhost',
         port: lt_server_port,
         headers: {
-            host: hostname
+            host: hostname + '.tld'
         },
         path: '/'
     }

test/queue.js

@@ -61,7 +61,7 @@ test('query localtunnel server w/ ident', function(done) {
         port: lt_server_port,
         agent: false,
         headers: {
-            host: hostname
+            host: hostname + '.tld'
         },
         path: '/'
     }