add test for invalid subdomain requests

package.json

@@ -30,10 +30,10 @@
   },
   "devDependencies": {
     "mocha": "1.18.2",
-    "localtunnel": "1.1.1"
+    "localtunnel": "1.1.2"
   },
   "scripts": {
-    "test": "mocha --ui qunit -- test",
+    "test": "mocha --ui qunit --reporter list -- test",
     "start": "./bin/server"
   }
 }

server.js

@@ -183,7 +183,7 @@ module.exports = function(opt) {
 
         // limit requested hostnames to 20 characters
         if (! /^[A-Za-z0-9]{4,20}$/.test(req_id)) {
-            var err = new Error('');
+            var err = new Error('Invalid subdomain. Subdomains must be between 4 and 20 alphanumeric characters.');
             err.statusCode = 403;
             return next(err);
         }
@@ -191,8 +191,7 @@ module.exports = function(opt) {
         debug('making new client with id %s', req_id);
         new_client(req_id, opt, function(err, info) {
             if (err) {
-                res.statusCode = 500;
-                return res.end(err.message);
+                return next(err);
             }
 
             var url = schema + '://' + req_id + '.' + req.headers.host;

test/basic.js

@@ -91,6 +91,19 @@ test('request specific domain', function(done) {
     });
 });
 
+test('request domain that is too long', function(done) {
+    var opt = {
+        host: 'http://localhost:' + lt_server_port,
+        subdomain: 'thisdomainisoutsidethesizeofwhatweallow'
+    };
+
+    localtunnel(test._fake_port, opt, function(err, tunnel) {
+        assert(err);
+        assert.equal(err.message, 'Invalid subdomain. Subdomains must be between 4 and 20 alphanumeric characters.');
+        done();
+    });
+});
+
 test('shutdown', function() {
     localtunnel_server.close();
 });