diff --git a/src/danog/MadelineProto/Button.php b/src/danog/MadelineProto/Button.php
index 233b16c4..862f4dc3 100644
--- a/src/danog/MadelineProto/Button.php
+++ b/src/danog/MadelineProto/Button.php
@@ -19,9 +19,7 @@ class Button extends \Volatile implements \JsonSerializable
 
     public function __construct($API, $message, $button)
     {
-        foreach ($button as $key => $value) {
-            $this->{$key} = $value;
-        }
+        $this->data = $button;
         $this->info['peer'] = $message['to_id'];
         $this->info['id'] = $message['id'];
         $this->info['API'] = $API;
diff --git a/src/danog/MadelineProto/Logger.php b/src/danog/MadelineProto/Logger.php
index 3dd9c6ed..85086c7a 100644
--- a/src/danog/MadelineProto/Logger.php
+++ b/src/danog/MadelineProto/Logger.php
@@ -62,6 +62,20 @@ class Logger
         self::class_exists();
     }
 
+    public static function utf8ize($d)
+    {
+        if (is_array($d) || $d instanceof \Volatile) {
+            foreach ($d as $k => $v) {
+                if ($k === 'bytes' || is_array($v) || $v instanceof \Volatile) {
+                    $d[$k] = self::utf8ize($v);
+                }
+            }
+        } elseif (is_string($d)) {
+            return utf8_encode($d);
+        }
+
+        return $d;
+    }
     public static function log($params, $level = self::NOTICE)
     {
         if (!self::$constructed) {
@@ -76,7 +90,7 @@ class Logger
         }
         foreach (is_array($params) ? $params : [$params] as $param) {
             if (!is_string($param)) {
-                $param = json_encode($param, JSON_PRETTY_PRINT);
+                $param = json_encode(self::utf8ize($param), JSON_PRETTY_PRINT);
             }
             $param = str_pad(basename(debug_backtrace()[0]['file'], '.php').$prefix.': ', 16 + strlen($prefix))."\t".$param;
             switch (self::$mode) {
diff --git a/src/danog/MadelineProto/MTProto.php b/src/danog/MadelineProto/MTProto.php
index bfa1751a..1c18be2b 100644
--- a/src/danog/MadelineProto/MTProto.php
+++ b/src/danog/MadelineProto/MTProto.php
@@ -22,6 +22,7 @@ class MTProto extends \Volatile
     use \danog\MadelineProto\MTProtoTools\AuthKeyHandler;
     use \danog\MadelineProto\MTProtoTools\CallHandler;
     use \danog\MadelineProto\MTProtoTools\Crypt;
+    use \danog\MadelineProto\MTProtoTools\DialogHandler;
     use \danog\MadelineProto\MTProtoTools\MessageHandler;
     use \danog\MadelineProto\MTProtoTools\MsgIdHandler;
     use \danog\MadelineProto\MTProtoTools\PeerHandler;
diff --git a/src/danog/MadelineProto/MTProtoTools/CallHandler.php b/src/danog/MadelineProto/MTProtoTools/CallHandler.php
index f22e6d51..71e57114 100644
--- a/src/danog/MadelineProto/MTProtoTools/CallHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/CallHandler.php
@@ -116,7 +116,7 @@ trait CallHandler
                 }
                 switch ($server_answer['_']) {
                     case 'rpc_error':
-                        $this->handle_rpc_error($server_answer, $aargs['datacenter']);
+                        $this->handle_rpc_error($server_answer, $aargs);
                         break;
                     case 'bad_server_salt':
                     case 'bad_msg_notification':
diff --git a/src/danog/MadelineProto/MTProtoTools/ResponseHandler.php b/src/danog/MadelineProto/MTProtoTools/ResponseHandler.php
index c55499c6..28b8bd21 100644
--- a/src/danog/MadelineProto/MTProtoTools/ResponseHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/ResponseHandler.php
@@ -131,7 +131,9 @@ trait ResponseHandler
                 case 'rpc_error':
                     $this->check_in_seq_no($datacenter, $current_msg_id);
                     $only_updates = false;
-                    $this->handle_rpc_error($this->datacenter->sockets[$datacenter]->incoming_messages[$current_msg_id]['content'], $datacenter);
+                    $aargs = ['datacenter' => &$datacenter];
+                    $this->handle_rpc_error($this->datacenter->sockets[$datacenter]->incoming_messages[$current_msg_id]['content'], $aargs);
+                    unset($aargs);
                     break;
 
                 case 'bad_server_salt':
@@ -348,32 +350,33 @@ trait ResponseHandler
     {
     }
 
-    public function handle_rpc_error($server_answer, &$datacenter)
+    public function handle_rpc_error($server_answer, &$aargs)
     {
         switch ($server_answer['error_code']) {
             case 303:
-                $this->datacenter->curdc = $datacenter = (int) preg_replace('/[^0-9]+/', '', $server_answer['error_message']);
+                $this->datacenter->curdc = $aargs['datacenter'] = (int) preg_replace('/[^0-9]+/', '', $server_answer['error_message']);
                 throw new \danog\MadelineProto\Exception('Received request to switch to DC '.$this->datacenter->curdc);
             case 401:
                 switch ($server_answer['error_message']) {
                     case 'USER_DEACTIVATED':
                     case 'SESSION_REVOKED':
                     case 'SESSION_EXPIRED':
-                        $this->datacenter->sockets[$datacenter]->temp_auth_key = null;
-                        $this->datacenter->sockets[$datacenter]->auth_key = null;
+                        $this->datacenter->sockets[$aargs['datacenter']]->temp_auth_key = null;
+                        $this->datacenter->sockets[$aargs['datacenter']]->auth_key = null;
                         $this->authorized = false;
                         $this->authorization = null;
                         $this->init_authorization(); // idk
                         throw new \danog\MadelineProto\RPCErrorException($server_answer['error_message'], $server_answer['error_code']);
                     case 'AUTH_KEY_UNREGISTERED':
                     case 'AUTH_KEY_INVALID':
-                        $this->datacenter->sockets[$datacenter]->temp_auth_key = null;
+                        $this->datacenter->sockets[$aargs['datacenter']]->temp_auth_key = null;
                         $this->init_authorization(); // idk
                         throw new \danog\MadelineProto\RPCErrorException($server_answer['error_message'], $server_answer['error_code']);
                 }
             case 420:
                 $seconds = preg_replace('/[^0-9]+/', '', $server_answer['error_message']);
-                if (is_numeric($seconds) && isset($this->settings['flood_timeout']['wait_if_lt']) && $seconds < $this->settings['flood_timeout']['wait_if_lt']) {
+                $limit = isset($aargs['FloodWaitLimit']) ? $aargs['FloodWaitLimit'] : $this->settings['flood_timeout']['wait_if_lt'];
+                if (is_numeric($seconds) && $seconds < $limit) {
                     \danog\MadelineProto\Logger::log(['Flood, waiting '.$seconds.' seconds...'], \danog\MadelineProto\Logger::NOTICE);
                     sleep($seconds);
                     throw new \danog\MadelineProto\Exception('Re-executing query...');
diff --git a/src/danog/MadelineProto/TL/TL.php b/src/danog/MadelineProto/TL/TL.php
index c003603a..c014fb00 100644
--- a/src/danog/MadelineProto/TL/TL.php
+++ b/src/danog/MadelineProto/TL/TL.php
@@ -283,7 +283,22 @@ trait TL
                 return $this->pack_double($object);
             case 'string':
                 $object = pack('C*', ...unpack('C*', $object));
+                $l = strlen($object);
+                $concat = '';
+                if ($l <= 253) {
+                    $concat .= chr($l);
+                    $concat .= $object;
+                    $concat .= pack('@'.$this->posmod((-$l - 1), 4));
+                } else {
+                    $concat .= chr(254);
+                    $concat .= substr($this->pack_signed_int($l), 0, 3);
+                    $concat .= $object;
+                    $concat .= pack('@'.$this->posmod(-$l, 4));
+                }
+
+                return $concat;
             case 'bytes':
+                if (is_array($object)) $object = pack('C*', ...$object);
                 $l = strlen($object);
                 $concat = '';
                 if ($l <= 253) {
@@ -519,6 +534,7 @@ trait TL
                     throw new Exception("deserialize: generated value isn't a string");
                 }
 
+                //return $type['type'] === 'bytes' ? unpack('C*', $x) : $x;
                 return $x;
             case 'true':
                 return true;
diff --git a/tests/testing.php b/tests/testing.php
index 120716eb..787ddf0e 100755
--- a/tests/testing.php
+++ b/tests/testing.php
@@ -71,7 +71,7 @@ $message = (getenv('TRAVIS_COMMIT') == '') ? 'I iz works always (io laborare sem
 
 echo 'Serializing MadelineProto to session.madeline...'.PHP_EOL;
 echo 'Wrote '.\danog\MadelineProto\Serialization::serialize('session.madeline', $MadelineProto).' bytes'.PHP_EOL;
-echo 'Size of MadelineProto instance is '.strlen(serialize($MadelineProto)).' bytes'.PHP_EOL;
+
 if (stripos(readline('Do you want to make the secret chat tests? (y/n)'), 'y') !== false) {
 
 /*