Opportunity of connection via unix socket.

library/Rediska.php

@@ -251,6 +251,8 @@ public function addServer($host, $port = Rediska_Connection::DEFAULT_PORT, array
         if (isset($options['useSocket'])) {
             if ($options['useSocket'] == true) {
                 $connectionClass = static::CONNECTION_SOCKET_CLASS;
+            } else {
+                $connectionClass = static::CONNECTION_CLASS;
             }
             unset($options['useSocket']);
         } else {

library/Rediska/Connection.php

@@ -64,7 +64,7 @@ class Rediska_Connection extends Rediska_Options
     public function connect()
     {
         if (!$this->isConnected()) {
-            $socketAddress = 'tcp://' . $this->getHost() . ':' . $this->getPort();
+            $socketAddress = $this->getSocketAddress();
 
             if ($this->_options['persistent']) {
                 $flag = STREAM_CLIENT_PERSISTENT | STREAM_CLIENT_CONNECT;
@@ -136,6 +136,11 @@ public function connect()
         }
     }
 
+    public function getSocketAddress()
+    {
+        return 'tcp://' . $this->getHost() . ':' . $this->getPort();
+    }
+
     /**
      * Disconnect
      * 

library/Rediska/Connection/UnixSocket.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Rediska unix socket connection
+ *
+ * @author Ivan Shumkov
+ * @package Rediska
+ * @subpackage Connection
+ * @version 0.5.10
+ * @link http://rediska.geometria-lab.net
+ * @license http://www.opensource.org/licenses/bsd-license.php
+ */
+class Rediska_Connection_UnixSocket extends Rediska_Connection
+{
+    /**
+     * @return string
+     */
+    public function getSocketAddress()
+    {
+        return 'unix://' . $this->getHost();
+    }
+}