diff --git a/README.md b/README.md
index 00b8234..06d57a6 100644
--- a/README.md
+++ b/README.md
@@ -38,8 +38,8 @@ KevaChat is distributed chat platform for open, uncensored and privacy respectab
 
 ## Start
 
-* `php src/server.php`
+* `php src/server.php 127.0.0.1`
 
 ## See also
 
-* [web implementation](https://github.com/kevachat/webapp)
\ No newline at end of file
+* [KevaChat Web Application](https://github.com/kevachat/webapp)
\ No newline at end of file
diff --git a/src/server.php b/src/server.php
index 99e6a3d..51b9a2a 100644
--- a/src/server.php
+++ b/src/server.php
@@ -3,286 +3,282 @@
 // Load dependencies
 require_once __DIR__ . '/../vendor/autoload.php';
 
-// Scan host
-foreach ((array) scandir(__DIR__ . '/../host') as $host)
+// Check arguments
+if (empty($argv[1]))
 {
-    // Skip meta
-    if ($host == '.' || $host == '..' || is_file($host))
-    {
-        continue;
-    }
-
-    // Check host configured
-    if (!file_exists(__DIR__ . '/../host/' . $host . '/config.json'))
-    {
-        echo sprintf(
-            _('Host "%s" not configured!') . PHP_EOL,
-            $host
-        );
+    exit(_('Configured hostname required as argument!') . PHP_EOL);
+}
 
-        continue;
-    }
-
-    // Check cert exists
-    if (!file_exists(__DIR__ . '/../host/' . $host . '/cert.pem'))
-    {
-        echo sprintf(
+// Check cert exists
+if (!file_exists(__DIR__ . '/../host/' . $argv[1] . '/cert.pem'))
+{
+    exit(
+        sprintf(
             _('Certificate for host "%s" not found!') . PHP_EOL,
-            $host
-        );
-
-        continue;
-    }
+            $argv[1]
+        )
+    );
+}
 
-    // Check key exists
-    if (!file_exists(__DIR__ . '/../host/' . $host . '/key.rsa'))
-    {
-        echo sprintf(
+// Check key exists
+if (!file_exists(__DIR__ . '/../host/' . $argv[1] . '/key.rsa'))
+{
+    exit(
+        sprintf(
             _('Key for host "%s" not found!') . PHP_EOL,
-            $host
-        );
-
-        continue;
-    }
-
-    // Init config
-    $config = json_decode(
-        file_get_contents(
-            __DIR__ . '/../host/' . $host . '/config.json'
+            $argv[1]
         )
     );
+}
 
-    // Init memory
-    $memory = new \Yggverse\Cache\Memory(
-        $config->memcached->server->host,
-        $config->memcached->server->port,
-        $config->memcached->server->namespace,
-        $config->memcached->server->timeout
+// Check host configured
+if (!file_exists(__DIR__ . '/../host/' . $argv[1] . '/config.json'))
+{
+    exit(
+        sprintf(
+            _('Host "%s" not configured!') . PHP_EOL,
+            $argv[1]
+        )
     );
+}
+
+// Init config
+$config = json_decode(
+    file_get_contents(
+        __DIR__ . '/../host/' . $argv[1] . '/config.json'
+    )
+);
+
+// Init memory
+$memory = new \Yggverse\Cache\Memory(
+    $config->memcached->server->host,
+    $config->memcached->server->port,
+    $config->memcached->server->namespace,
+    $config->memcached->server->timeout
+);
+
+// Init server
+$server = new \Yggverse\TitanII\Server();
+
+$server->setCert(
+    __DIR__ . '/../host/' . $argv[1] . '/cert.pem'
+);
+
+$server->setKey(
+    __DIR__ . '/../host/' . $argv[1] . '/key.rsa'
+);
+
+$server->setHandler(
+    function (\Yggverse\TitanII\Request $request): \Yggverse\TitanII\Response
+    {
+        global $memory;
+        global $config;
 
-    // Init server
-    $server = new \Yggverse\TitanII\Server();
+        $response = new \Yggverse\TitanII\Response();
 
-    $server->setCert(
-        __DIR__ . '/../host/' . $host . '/cert.pem'
-    );
+        $response->setCode(
+            20
+        );
 
-    $server->setKey(
-        __DIR__ . '/../host/' . $host . '/key.rsa'
-    );
+        $response->setMeta(
+            'text/gemini'
+        );
 
-    $server->setHandler(
-        function (\Yggverse\TitanII\Request $request): \Yggverse\TitanII\Response
+        // Route begin
+        switch ($request->getPath())
         {
-            global $memory;
-            global $config;
-
-            $response = new \Yggverse\TitanII\Response();
-
-            $response->setCode(
-                20
-            );
-
-            $response->setMeta(
-                'text/gemini'
-            );
-
-            // Route begin
-            switch ($request->getPath())
-            {
-                // Home page
-                case null:
-                case '/':
-
-                    // Get rooms list
-                    include_once __DIR__ . '/controller/room.php';
-
-                    $room = new \Kevachat\Geminiapp\Controller\Room(
-                        $memory,
-                        $config
+            // Home page
+            case null:
+            case '/':
+
+                // Get rooms list
+                include_once __DIR__ . '/controller/room.php';
+
+                $room = new \Kevachat\Geminiapp\Controller\Room(
+                    $memory,
+                    $config
+                );
+
+                if ($list = $room->list())
+                {
+                    $response->setContent(
+                        $list
                     );
 
-                    if ($list = $room->list())
-                    {
-                        $response->setContent(
-                            $list
-                        );
+                    return $response;
+                }
 
-                        return $response;
-                    }
-
-                // Dynamical requests
-                default:
+            // Dynamical requests
+            default:
 
-                    // room|raw request
-                    if (preg_match('/^\/([A-z]+)\/(N[A-z0-9]{33})$/', $request->getPath(), $matches))
+                // room|raw request
+                if (preg_match('/^\/([A-z]+)\/(N[A-z0-9]{33})$/', $request->getPath(), $matches))
+                {
+                    if (!empty($matches[1]) && !empty($matches[2]))
                     {
-                        if (!empty($matches[1]) && !empty($matches[2]))
+                        switch ($matches[1])
                         {
-                            switch ($matches[1])
-                            {
-                                case 'room':
+                            case 'room':
 
-                                    include_once __DIR__ . '/controller/room.php';
+                                include_once __DIR__ . '/controller/room.php';
 
-                                    $room = new \Kevachat\Geminiapp\Controller\Room(
-                                        $memory,
-                                        $config
+                                $room = new \Kevachat\Geminiapp\Controller\Room(
+                                    $memory,
+                                    $config
+                                );
+
+                                if ($posts = $room->posts($matches[2]))
+                                {
+                                    $response->setContent(
+                                        $posts
                                     );
 
-                                    if ($posts = $room->posts($matches[2]))
-                                    {
-                                        $response->setContent(
-                                            $posts
-                                        );
+                                    return $response;
+                                }
 
-                                        return $response;
-                                    }
+                            break;
 
-                                break;
+                            case 'raw':
 
-                                case 'raw':
+                                include_once __DIR__ . '/controller/media.php';
 
-                                    include_once __DIR__ . '/controller/media.php';
+                                $media = new \Kevachat\Geminiapp\Controller\Media(
+                                    $config
+                                );
 
-                                    $media = new \Kevachat\Geminiapp\Controller\Media(
-                                        $config
+                                if ($data = $media->raw($matches[2], $mime))
+                                {
+                                    $response->setMeta(
+                                        $mime
                                     );
 
-                                    if ($data = $media->raw($matches[2], $mime))
-                                    {
-                                        $response->setMeta(
-                                            $mime
-                                        );
-
-                                        $response->setContent(
-                                            $data
-                                        );
+                                    $response->setContent(
+                                        $data
+                                    );
 
-                                        return $response;
-                                    }
+                                    return $response;
+                                }
 
-                                break;
-                            }
+                            break;
                         }
                     }
+                }
 
-                    // New publication request
-                    else if (preg_match('/^\/room\/(N[A-z0-9]{33})\/([\d]+)\/post$/', $request->getPath(), $matches))
+                // New publication request
+                else if (preg_match('/^\/room\/(N[A-z0-9]{33})\/([\d]+)\/post$/', $request->getPath(), $matches))
+                {
+                    if (!empty($matches[1]))
                     {
-                        if (!empty($matches[1]))
+                        // Request post message
+                        if (empty($request->getQuery()))
                         {
-                            // Request post message
-                            if (empty($request->getQuery()))
-                            {
-                                $response->setMeta(
-                                    'text/plain'
-                                );
+                            $response->setMeta(
+                                'text/plain'
+                            );
 
-                                $response->setCode(
-                                    10
-                                );
+                            $response->setCode(
+                                10
+                            );
 
-                                return $response;
-                            }
+                            return $response;
+                        }
 
-                            // Message sent, save to blockchain
-                            else
-                            {
-                                include_once __DIR__ . '/controller/room.php';
+                        // Message sent, save to blockchain
+                        else
+                        {
+                            include_once __DIR__ . '/controller/room.php';
 
-                                $room = new \Kevachat\Geminiapp\Controller\Room(
-                                    $memory,
-                                    $config
-                                );
+                            $room = new \Kevachat\Geminiapp\Controller\Room(
+                                $memory,
+                                $config
+                            );
 
-                                // Success, redirect to this room page
-                                if ($txid = $room->post($matches[1], null, $matches[2], $request->getQuery()))
+                            // Success, redirect to this room page
+                            if ($txid = $room->post($matches[1], null, $matches[2], $request->getQuery()))
+                            {
+                                if ($result = $room->sent($matches[1], $txid))
                                 {
-                                    if ($result = $room->sent($matches[1], $txid))
-                                    {
-                                        $response->setContent(
-                                            $result
-                                        );
-
-                                        return $response;
-                                    }
+                                    $response->setContent(
+                                        $result
+                                    );
+
+                                    return $response;
                                 }
                             }
                         }
                     }
+                }
 
-                    // New post reply request
-                    else if (preg_match('/^\/room\/(N[A-z0-9]{33})\/([A-z0-9]{64})\/([\d]+)\/reply$/', $request->getPath(), $matches))
+                // New post reply request
+                else if (preg_match('/^\/room\/(N[A-z0-9]{33})\/([A-z0-9]{64})\/([\d]+)\/reply$/', $request->getPath(), $matches))
+                {
+                    if (!empty($matches[1]) && !empty($matches[2]) && !empty($matches[3]))
                     {
-                        if (!empty($matches[1]) && !empty($matches[2]) && !empty($matches[3]))
+                        // Request post message
+                        if (empty($request->getQuery()))
                         {
-                            // Request post message
-                            if (empty($request->getQuery()))
-                            {
-                                $response->setMeta(
-                                    'text/plain'
-                                );
+                            $response->setMeta(
+                                'text/plain'
+                            );
 
-                                $response->setCode(
-                                    10
-                                );
+                            $response->setCode(
+                                10
+                            );
 
-                                return $response;
-                            }
+                            return $response;
+                        }
 
-                            // Message sent, save to blockchain
-                            else
-                            {
-                                include_once __DIR__ . '/controller/room.php';
+                        // Message sent, save to blockchain
+                        else
+                        {
+                            include_once __DIR__ . '/controller/room.php';
 
-                                $room = new \Kevachat\Geminiapp\Controller\Room(
-                                    $memory,
-                                    $config
-                                );
+                            $room = new \Kevachat\Geminiapp\Controller\Room(
+                                $memory,
+                                $config
+                            );
 
-                                // Success, redirect to this room page
-                                if ($txid = $room->post($matches[1], $matches[2], $matches[3], $request->getQuery()))
+                            // Success, redirect to this room page
+                            if ($txid = $room->post($matches[1], $matches[2], $matches[3], $request->getQuery()))
+                            {
+                                if ($result = $room->sent($matches[1], $txid))
                                 {
-                                    if ($result = $room->sent($matches[1], $txid))
-                                    {
-                                        $response->setContent(
-                                            $result
-                                        );
-
-                                        return $response;
-                                    }
+                                    $response->setContent(
+                                        $result
+                                    );
+
+                                    return $response;
                                 }
                             }
                         }
                     }
-            }
-
-            // Set default response
-            include_once __DIR__ . '/controller/error.php';
-
-            $error = new \Kevachat\Geminiapp\Controller\Error(
-                $config
-            );
+                }
+        }
 
-            $response->setContent(
-                $error->oops()
-            );
+        // Set default response
+        include_once __DIR__ . '/controller/error.php';
 
-            return $response;
-        }
-    );
+        $error = new \Kevachat\Geminiapp\Controller\Error(
+            $config
+        );
 
-    // Start server
-    echo sprintf(
-        _('Server "%s" started on %s:%d') . PHP_EOL,
-        $host,
-        $config->gemini->server->host,
-        $config->gemini->server->port
-    );
+        $response->setContent(
+            $error->oops()
+        );
 
-    $server->start(
-        $config->gemini->server->host,
-        $config->gemini->server->port
-    );
-}
\ No newline at end of file
+        return $response;
+    }
+);
+
+// Start server
+echo sprintf(
+    _('Server "%s" started on %s:%d') . PHP_EOL,
+    $argv[1],
+    $config->gemini->server->host,
+    $config->gemini->server->port
+);
+
+$server->start(
+    $config->gemini->server->host,
+    $config->gemini->server->port
+);
\ No newline at end of file