Merge pull request erikdubbelboer#90 from gulch/master

Added possibility of connection via UNIX domain socket.

Author: erikdubbelboer

includes/common.inc.php

@@ -112,7 +112,12 @@
 }
 
 // Setup a connection to Redis.
-$redis = !$server['port'] ? new Predis\Client($server['host']) : new Predis\Client('tcp://'.$server['host'].':'.$server['port']);
+if(isset($server['scheme']) && $server['scheme'] === 'unix' && $server['path']) {
+  $redis = new Predis\Client(array('scheme' => 'unix', 'path' => $server['path']));
+} else {
+  $redis = !$server['port'] ? new Predis\Client($server['host']) : new Predis\Client('tcp://'.$server['host'].':'.$server['port']);
+}
+
 try {
     $redis->connect();
 } catch (Predis\CommunicationException $exception) {

includes/config.sample.inc.php

@@ -8,6 +8,8 @@
       'host'   => '127.0.0.1',
       'port'   => 6379,
       'filter' => '*',
+      'scheme' => 'tcp', // Optional. Connection scheme. 'tcp' - for TCP connection, 'unix' - for connection by unix domain socket
+      'path'   => '' // Optional. Path to unix domain socket. Uses only if 'scheme' => 'unix'. Example: '/var/run/redis/redis.sock'
 
       // Optional Redis authentication.
       //'auth' => 'redispasswordhere' // Warning: The password is sent in plain-text to the Redis server.