diff --git a/TL.php b/TL.php
index a31802b0..d8c08536 100644
--- a/TL.php
+++ b/TL.php
@@ -171,7 +171,9 @@ class TL
             if (isset($this->constructor_type[$type_])) {
                 $tl_elem = $this->constructor_type[$type_];
             } else {
-                $i = $this->struct->unpack('<i', fread($bytes_io, 4)) [0];
+                $Idata = fread($bytes_io, 4);
+                $i = $this->struct->unpack('<i', $Idata) [0];
+                var_dump(ftell($bytes_io));
                 if (isset($this->constructor_id[$i])) {
                     $tl_elem = $this->constructor_id[$i];
                 } else {
diff --git a/TL.py b/TL.py
index e16bf0c1..47f029c8 100644
--- a/TL.py
+++ b/TL.py
@@ -4,6 +4,7 @@ import struct
 import json
 import io
 from numbers import Number
+from binascii import hexlify
 
 class TlConstructor:
     def __init__(self, json_dict):
@@ -149,8 +150,9 @@ def deserialize(bytes_io, type_=None, subtype=None):
             tl_elem = tl.constructor_type[type_]
         except KeyError:
             # Boxed types
-            i = struct.unpack('<i', bytes_io.read(4))[0]  # read type ID
-            print type_
+            Idata = bytes_io.read(4)
+            i = struct.unpack('<i', Idata)[0]  # read type ID
+            print(hexlify(bytes_io.getvalue()))
             try:
                 tl_elem = tl.constructor_id[i]
             except KeyError:
diff --git a/composer.lock b/composer.lock
index bb53f41c..d43dc77b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -9,16 +9,16 @@
     "packages": [
         {
             "name": "danog/phpstruct",
-            "version": "0.4.1",
+            "version": "0.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/danog/PHPStruct.git",
-                "reference": "c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca"
+                "reference": "da3d4f5a111823bc5518af054c41f32cce0f221e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/danog/PHPStruct/zipball/c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca",
-                "reference": "c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca",
+                "url": "https://api.github.com/repos/danog/PHPStruct/zipball/da3d4f5a111823bc5518af054c41f32cce0f221e",
+                "reference": "da3d4f5a111823bc5518af054c41f32cce0f221e",
                 "shasum": ""
             },
             "require": {
@@ -53,7 +53,7 @@
                 "struct",
                 "unpack"
             ],
-            "time": "2016-07-15 10:56:16"
+            "time": "2016-07-15 13:07:47"
         },
         {
             "name": "phpseclib/phpseclib",
diff --git a/mtproto.py b/mtproto.py
index f294310b..67cecbf1 100644
--- a/mtproto.py
+++ b/mtproto.py
@@ -143,7 +143,7 @@ class Session:
 
         ResPQ = self.method_call('req_pq', nonce=nonce)
         server_nonce = ResPQ['server_nonce']
-	exit()
+        exit()
         # TODO: selecting RSA public key based on this fingerprint
         public_key_fingerprint = ResPQ['server_public_key_fingerprints'][0]
 
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index d5d4415b..fcdefae8 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -1,54 +1,4 @@
 [
-    {
-        "name": "danog/phpstruct",
-        "version": "0.4.1",
-        "version_normalized": "0.4.1.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/danog/PHPStruct.git",
-            "reference": "c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/danog/PHPStruct/zipball/c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca",
-            "reference": "c45742bcbc6e1bbf6bdca7b92b65a6b9624853ca",
-            "shasum": ""
-        },
-        "require": {
-            "php": ">=5.6.0"
-        },
-        "require-dev": {
-            "phpunit/phpunit": "5.4.*"
-        },
-        "time": "2016-07-15 10:56:16",
-        "type": "library",
-        "installation-source": "dist",
-        "autoload": {
-            "psr-0": {
-                "danog\\PHP\\": "lib/"
-            }
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "MIT"
-        ],
-        "authors": [
-            {
-                "name": "danog",
-                "email": "daniil@daniil.it"
-            }
-        ],
-        "description": "PHP implementation of python's struct module.",
-        "homepage": "https://daniil.it/phpstruct",
-        "keywords": [
-            "byte",
-            "bytes",
-            "pack",
-            "python",
-            "struct",
-            "unpack"
-        ]
-    },
     {
         "name": "phpseclib/phpseclib",
         "version": "2.0.2",
@@ -142,5 +92,55 @@
             "x.509",
             "x509"
         ]
+    },
+    {
+        "name": "danog/phpstruct",
+        "version": "0.4.2",
+        "version_normalized": "0.4.2.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/danog/PHPStruct.git",
+            "reference": "da3d4f5a111823bc5518af054c41f32cce0f221e"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/danog/PHPStruct/zipball/da3d4f5a111823bc5518af054c41f32cce0f221e",
+            "reference": "da3d4f5a111823bc5518af054c41f32cce0f221e",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.6.0"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "5.4.*"
+        },
+        "time": "2016-07-15 13:07:47",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-0": {
+                "danog\\PHP\\": "lib/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "danog",
+                "email": "daniil@daniil.it"
+            }
+        ],
+        "description": "PHP implementation of python's struct module.",
+        "homepage": "https://daniil.it/phpstruct",
+        "keywords": [
+            "byte",
+            "bytes",
+            "pack",
+            "python",
+            "struct",
+            "unpack"
+        ]
     }
 ]
diff --git a/vendor/danog/phpstruct/composer.lock b/vendor/danog/phpstruct/composer.lock
deleted file mode 100644
index 047b3dd5..00000000
--- a/vendor/danog/phpstruct/composer.lock
+++ /dev/null
@@ -1,1317 +0,0 @@
-{
-    "_readme": [
-        "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
-        "This file is @generated automatically"
-    ],
-    "hash": "73b93d737f11821625bd5ba0f6f60bd0",
-    "content-hash": "9d39c313319b5e233fd3b3d80982d2f7",
-    "packages": [],
-    "packages-dev": [
-        {
-            "name": "doctrine/instantiator",
-            "version": "1.0.5",
-            "source": {
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-                "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
-            },
-            "dist": {
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-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3,<8.0-DEV"
-            },
-            "require-dev": {
-                "athletic/athletic": "~0.1.8",
-                "ext-pdo": "*",
-                "ext-phar": "*",
-                "phpunit/phpunit": "~4.0",
-                "squizlabs/php_codesniffer": "~2.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Marco Pivetta",
-                    "email": "ocramius@gmail.com",
-                    "homepage": "http://ocramius.github.com/"
-                }
-            ],
-            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
-            "homepage": "https://github.com/doctrine/instantiator",
-            "keywords": [
-                "constructor",
-                "instantiate"
-            ],
-            "time": "2015-06-14 21:17:01"
-        },
-        {
-            "name": "myclabs/deep-copy",
-            "version": "1.5.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "a8773992b362b58498eed24bf85005f363c34771"
-            },
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-            },
-            "require-dev": {
-                "doctrine/collections": "1.*",
-                "phpunit/phpunit": "~4.1"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
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-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "description": "Create deep copies (clones) of your objects",
-            "homepage": "https://github.com/myclabs/DeepCopy",
-            "keywords": [
-                "clone",
-                "copy",
-                "duplicate",
-                "object",
-                "object graph"
-            ],
-            "time": "2015-11-20 12:04:31"
-        },
-        {
-            "name": "phpdocumentor/reflection-common",
-            "version": "1.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
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-            "version": "0.2",
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