Make an abstract class for sockets and allow specifying different socket in SourceQuery

This is a preparation for tests

SourceQuery/BaseSocket.php

@@ -0,0 +1,38 @@
+<?php
+	/**
+	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 *
+	 * @link https://xpaw.me
+	 * @link https://github.com/xPaw/PHP-Source-Query
+	 *
+	 * @license GNU Lesser General Public License, version 2.1
+	 *
+	 * @internal
+	 */
+	
+	namespace xPaw\SourceQuery;
+	
+	/**
+	 * Base socket interface
+	 *
+	 * @package xPaw\SourceQuery
+	 */
+	abstract class BaseSocket
+	{
+		public $Socket;
+		public $Engine;
+		
+		public $Ip;
+		public $Port;
+		public $Timeout;
+		
+		public function __destruct( )
+		{
+			$this->Close( );
+		}
+		
+		abstract public function Close( );
+		abstract public function Open( $Ip, $Port, $Timeout, $Engine );
+		abstract public function Write( $Header, $String = '' );
+		abstract public function Read( $Length = 1400 );
+	}

SourceQuery/Socket.php

@@ -23,15 +23,8 @@
 	 * @uses xPaw\SourceQuery\Exception\InvalidPacketException
 	 * @uses xPaw\SourceQuery\Exception\SocketException
 	 */
-	class Socket
+	class Socket extends BaseSocket
 	{
-		public $Socket;
-		public $Engine;
-		
-		public $Ip;
-		public $Port;
-		public $Timeout;
-		
 		public function Close( )
 		{
 			if( $this->Socket )

SourceQuery/SourceQuery.php

@@ -109,9 +109,9 @@
 		 */
 		private $UseOldGetChallengeMethod;
 		
-		public function __construct( )
+		public function __construct( BaseSocket $Socket = null )
 		{
-			$this->Socket = new Socket( );
+			$this->Socket = $Socket ?: new Socket( );
 		}
 		
 		public function __destruct( )

SourceQuery/bootstrap.php

@@ -20,6 +20,7 @@
 	require_once __DIR__ . '/Exception/InvalidPacketException.php';
 
 	require_once __DIR__ . '/Buffer.php';
+	require_once __DIR__ . '/BaseSocket.php';
 	require_once __DIR__ . '/Socket.php';
 	require_once __DIR__ . '/SourceRcon.php';
 	require_once __DIR__ . '/GoldSourceRcon.php';