add StanzaException class

Exception/Protocol/BindingException.php

@@ -17,11 +17,10 @@
 
 
 use Exception;
-use Kadet\Xmpp\Exception\ProtocolException;
 use Kadet\Xmpp\Jid;
 use Kadet\Xmpp\Stanza\Error;
 
-class BindingException extends ProtocolException
+class BindingException extends StanzaException
 {
     /**
      * Construct the exception. Note: The message is NOT binary safe.
@@ -34,7 +33,7 @@ class BindingException extends ProtocolException
      */
     public static function fromError(Jid $jid, Error $error, Exception $previous = null)
     {
-        return new static(\Kadet\Xmpp\Utils\helper\format("Cannot bind {resource} for {bare}. {condition}", [
+        return new static($error, \Kadet\Xmpp\Utils\helper\format("Cannot bind {resource} for {bare}. {condition}", [
             'resource'  => $jid->resource ?: "no resource",
             'bare'      => (string)$jid->bare(),
             'condition' => static::_conditionDescription($error)

Exception/Protocol/StanzaException.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Nucleus - XMPP Library for PHP
+ *
+ * Copyright (C) 2016, Some rights reserved.
+ *
+ * @author Kacper "Kadet" Donat <[email protected]>
+ *
+ * Contact with author:
+ * Xmpp: [email protected]
+ * E-mail: [email protected]
+ *
+ * From Kadet with love.
+ */
+
+namespace Kadet\Xmpp\Exception\Protocol;
+
+
+use Exception;
+use Kadet\Xmpp\Exception\PropertyAccessException;
+use Kadet\Xmpp\Stanza\Error;
+
+class StanzaException extends PropertyAccessException
+{
+    /** @var Error */
+    private $_error;
+
+    /**
+     * Construct the exception. Note: The message is NOT binary safe.
+     * @link  http://php.net/manual/en/exception.construct.php
+     * @param Error     $error    Stanza error describing exception
+     * @param string    $message  [optional] The Exception message to throw.
+     * @param int       $code     [optional] The Exception code.
+     * @param Exception $previous [optional] The previous exception used for the exception chaining. Since 5.3.0
+     * @since 5.1.0
+     */
+    public function __construct(Error $error, $message = '', $code = 0, Exception $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+        $this->_error = $error;
+    }
+
+
+    /**
+     * @return Error
+     */
+    public function getError() : Error
+    {
+        return $this->_error;
+    }
+}