add docs

app/Client/Client.php

@@ -203,6 +203,10 @@ class Client
             $this->logger->info($data->message);
         });
 
+        $connection->on('warning', function ($data) {
+            $this->logger->warn($data->message);
+        });
+
         $connection->on('error', function ($data) {
             $this->logger->error($data->message);
         });

app/Commands/ShareCommand.php

@@ -2,6 +2,7 @@
 
 namespace App\Commands;
 
+use Illuminate\Support\Str;
 use App\Client\Factory;
 use React\EventLoop\LoopInterface;
 
@@ -33,6 +34,16 @@ class ShareCommand extends ServerAwareCommand
             $domain = $this->option('domain');
         }
 
+        if (! is_null($this->option('subdomain'))) {
+            $subdomains = explode(',', $this->option('subdomain'));
+            $this->info('Trying to use custom domain: '.$subdomains[0]);
+        } else {
+            $host = Str::beforeLast($this->argument('host'), '.');
+            $host = Str::beforeLast($host, ':');
+            $subdomains = [Str::slug($host)];
+            $this->info('Trying to use custom domain: '.$subdomains[0].PHP_EOL);
+        }
+
         (new Factory())
             ->setLoop(app(LoopInterface::class))
             ->setHost($this->getServerHost())
@@ -41,7 +52,7 @@ class ShareCommand extends ServerAwareCommand
             ->createClient()
             ->share(
                 $this->argument('host'),
-                explode(',', $this->option('subdomain')),
+                $subdomains,
                 $domain
             )
             ->createHttpServer()

app/Server/Http/Controllers/ControlMessageController.php

@@ -312,7 +312,7 @@ class ControlMessageController implements MessageComponentInterface
          */
         if (! is_null($user) && $user['can_specify_subdomains'] === 0 && ! is_null($subdomain)) {
             $connection->send(json_encode([
-                'event' => 'info',
+                'event' => 'error',
                 'data' => [
                     'message' => config('expose.admin.messages.custom_subdomain_unauthorized').PHP_EOL,
                 ],