diff --git a/.gitignore b/.gitignore
index 6482763..5586ab2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,13 +13,15 @@ nbproject
 Thumbs.db
 
 # composer vendor dir
-/yii/vendor
+/vendor
 
 # composer itself is not needed
 composer.phar
+# composer.lock should not be committed as we always want the latest versions
+/composer.lock
 
 # Mac DS_Store Files
 .DS_Store
 
 # local phpunit config
-/phpunit.xml
\ No newline at end of file
+/phpunit.xml
diff --git a/.travis.yml b/.travis.yml
index 8c9b258..346bd81 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ php:
 services:
   - redis-server
   - memcached
+  - elasticsearch
 
 before_script:
   - composer self-update && composer --version
diff --git a/extensions/elasticsearch/ActiveQuery.php b/extensions/elasticsearch/ActiveQuery.php
index 2a99643..79c83c8 100644
--- a/extensions/elasticsearch/ActiveQuery.php
+++ b/extensions/elasticsearch/ActiveQuery.php
@@ -84,7 +84,7 @@ class ActiveQuery extends Query implements ActiveQueryInterface
 	public function all($db = null)
 	{
 		$command = $this->createCommand($db);
-		$result = $command->queryAll();
+		$result = $command->search();
 		if (empty($result['hits'])) {
 			return [];
 		}
@@ -154,7 +154,7 @@ class ActiveQuery extends Query implements ActiveQueryInterface
 		if ($field == ActiveRecord::PRIMARY_KEY_NAME) {
 			$command = $this->createCommand($db);
 			$command->queryParts['fields'] = [];
-			$rows = $command->queryAll()['hits'];
+			$rows = $command->search()['hits'];
 			$result = [];
 			foreach ($rows as $row) {
 				$result[] = $row['_id'];
diff --git a/extensions/elasticsearch/ActiveRecord.php b/extensions/elasticsearch/ActiveRecord.php
index 33b01dd..f113cf3 100644
--- a/extensions/elasticsearch/ActiveRecord.php
+++ b/extensions/elasticsearch/ActiveRecord.php
@@ -370,11 +370,10 @@ class ActiveRecord extends \yii\db\ActiveRecord
 		}
 
 		// TODO do this via command
-		$url = '/' . static::index() . '/' . static::type() . '/_bulk';
-		$response = static::getDb()->http()->post($url, null, $bulk)->send();
-		$body = Json::decode($response->getBody(true));
+		$url = [static::index(), static::type(), '_bulk'];
+		$response = static::getDb()->post($url, [], $bulk);
 		$n=0;
-		foreach($body['items'] as $item) {
+		foreach($response['items'] as $item) {
 			if ($item['update']['ok']) {
 				$n++;
 			}
@@ -421,11 +420,10 @@ class ActiveRecord extends \yii\db\ActiveRecord
 		}
 
 		// TODO do this via command
-		$url = '/' . static::index() . '/' . static::type() . '/_bulk';
-		$response = static::getDb()->http()->post($url, null, $bulk)->send();
-		$body = Json::decode($response->getBody(true));
+		$url = [static::index(), static::type(), '_bulk'];
+		$response = static::getDb()->post($url, [], $bulk);
 		$n=0;
-		foreach($body['items'] as $item) {
+		foreach($response['items'] as $item) {
 			if ($item['delete']['found'] && $item['delete']['ok']) {
 				$n++;
 			}
diff --git a/extensions/elasticsearch/Command.php b/extensions/elasticsearch/Command.php
index 35334f4..7d5aa8e 100644
--- a/extensions/elasticsearch/Command.php
+++ b/extensions/elasticsearch/Command.php
@@ -43,7 +43,11 @@ class Command extends Component
 
 	public $options = [];
 
-	public function queryAll($options = [])
+	/**
+	 * @param array $options
+	 * @return mixed
+	 */
+	public function search($options = [])
 	{
 		$query = $this->queryParts;
 		if (empty($query)) {
@@ -57,23 +61,9 @@ class Command extends Component
 			$this->type !== null ? $this->type : '_all',
 			'_search'
 		];
-		try {
-			$response = $this->db->http()->post($this->createUrl($url, $options), null, $query)->send();
-		} catch(ClientErrorResponseException $e) {
-			throw new Exception("elasticsearch error:\n\n"
-				. $query . "\n\n" . $e->getMessage()
-				. print_r(Json::decode($e->getResponse()->getBody(true)), true), [], 0, $e);
-		}
-		return Json::decode($response->getBody(true))['hits'];
-	}
-
-	public function queryCount($options = [])
-	{
-		$options['search_type'] = 'count';
-		return $this->queryAll($options);
+		return $this->db->get($url, array_merge($this->options, $options), $query)['hits'];
 	}
 
-
 	/**
 	 * Inserts a document into an index
 	 * @param string $index
@@ -88,18 +78,11 @@ class Command extends Component
 	{
 		$body = is_array($data) ? Json::encode($data) : $data;
 
-		try {
-			if ($id !== null) {
-				$response = $this->db->http()->put($this->createUrl([$index, $type, $id], $options), null, $body)->send();
-			} else {
-				$response = $this->db->http()->post($this->createUrl([$index, $type], $options), null, $body)->send();
-			}
-		} catch(ClientErrorResponseException $e) {
-			throw new Exception("elasticsearch error:\n\n"
-				. $body . "\n\n" . $e->getMessage()
-				. print_r(Json::decode($e->getResponse()->getBody(true)), true), [], 0, $e);
+		if ($id !== null) {
+			return $this->db->put([$index, $type, $id], $options, $body);
+		} else {
+			return $this->db->post([$index, $type], $options, $body);
 		}
-		return Json::decode($response->getBody(true));
 	}
 
 	/**
@@ -113,15 +96,7 @@ class Command extends Component
 	 */
 	public function get($index, $type, $id, $options = [])
 	{
-		$httpOptions = [
-			'exceptions' => false,
-		];
-		$response = $this->db->http()->get($this->createUrl([$index, $type, $id], $options), null, $httpOptions)->send();
-		if ($response->getStatusCode() == 200 || $response->getStatusCode() == 404) {
-			return Json::decode($response->getBody(true));
-		} else {
-			throw new Exception('Elasticsearch request failed.');
-		}
+		return $this->db->get([$index, $type, $id], $options, null, [200, 404]);
 	}
 
 	/**
@@ -133,25 +108,12 @@ class Command extends Component
 	 * @param $id
 	 * @param array $options
 	 * @return mixed
-	 * @see http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-get.html
+	 * @see http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-multi-get.html
 	 */
 	public function mget($index, $type, $ids, $options = [])
 	{
-		$httpOptions = [
-			'exceptions' => false,
-		];
 		$body = Json::encode(['ids' => array_values($ids)]);
-		$response = $this->db->http()->post( // TODO guzzle does not manage to send get request with content
-			$this->createUrl([$index, $type, '_mget'], $options),
-			null,
-			$body,
-			$httpOptions
-		)->send();
-		if ($response->getStatusCode() == 200) {
-			return Json::decode($response->getBody(true));
-		} else {
-			throw new Exception('Elasticsearch request failed.');
-		}
+		return $this->db->get([$index, $type, '_mget'], $options, $body);
 	}
 
 	/**
@@ -164,12 +126,9 @@ class Command extends Component
 	 */
 	public function getSource($index, $type, $id)
 	{
-		$response = $this->db->http()->head($this->createUrl([$index, $type, $id]))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->get([$index, $type, $id]);
 	}
 
-	// TODO mget http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-multi-get.html
-
 	/**
 	 * gets a document from the index
 	 * @param $index
@@ -180,8 +139,7 @@ class Command extends Component
 	 */
 	public function exists($index, $type, $id)
 	{
-		$response = $this->db->http()->head($this->createUrl([$index, $type, $id]))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->head([$index, $type, $id]);
 	}
 
 	/**
@@ -195,8 +153,7 @@ class Command extends Component
 	 */
 	public function delete($index, $type, $id, $options = [])
 	{
-		$response = $this->db->http()->delete($this->createUrl([$index, $type, $id], $options))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->delete([$index, $type, $id], $options);
 	}
 
 	/**
@@ -211,21 +168,18 @@ class Command extends Component
 	public function update($index, $type, $id, $data, $options = [])
 	{
 		// TODO
-		$response = $this->db->http()->delete($this->createUrl([$index, $type, $id], $options))->send();
-		return Json::decode($response->getBody(true));
+//		return $this->db->delete([$index, $type, $id], $options);
 	}
 
 	// TODO bulk http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-bulk.html
 
-
 	/**
 	 * @see http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-create-index.html
 	 */
 	public function createIndex($index, $configuration = null)
 	{
 		$body = $configuration !== null ? Json::encode($configuration) : null;
-		$response = $this->db->http()->put($this->createUrl([$index]), null, $body)->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->put([$index], $body);
 	}
 
 	/**
@@ -233,8 +187,7 @@ class Command extends Component
 	 */
 	public function deleteIndex($index)
 	{
-		$response = $this->db->http()->delete($this->createUrl([$index]))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->delete([$index]);
 	}
 
 	/**
@@ -242,8 +195,7 @@ class Command extends Component
 	 */
 	public function deleteAllIndexes()
 	{
-		$response = $this->db->http()->delete($this->createUrl(['_all']))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->delete(['_all']);
 	}
 
 	/**
@@ -251,8 +203,7 @@ class Command extends Component
 	 */
 	public function indexExists($index)
 	{
-		$response = $this->db->http()->head($this->createUrl([$index]))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->head([$index]);
 	}
 
 	/**
@@ -260,8 +211,7 @@ class Command extends Component
 	 */
 	public function typeExists($index, $type)
 	{
-		$response = $this->db->http()->head($this->createUrl([$index, $type]))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->head([$index, $type]);
 	}
 
 	// TODO http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-aliases.html
@@ -276,8 +226,7 @@ class Command extends Component
 	 */
 	public function openIndex($index)
 	{
-		$response = $this->db->http()->post($this->createUrl([$index, '_open']))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->post([$index, '_open']);
 	}
 
 	/**
@@ -285,8 +234,7 @@ class Command extends Component
 	 */
 	public function closeIndex($index)
 	{
-		$response = $this->db->http()->post($this->createUrl([$index, '_close']))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->post([$index, '_close']);
 	}
 
 	/**
@@ -294,8 +242,7 @@ class Command extends Component
 	 */
 	public function getIndexStatus($index = '_all')
 	{
-		$response = $this->db->http()->get($this->createUrl([$index, '_status']))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->get([$index, '_status']);
 	}
 
 	// TODO http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-stats.html
@@ -306,8 +253,7 @@ class Command extends Component
 	 */
 	public function clearIndexCache($index)
 	{
-		$response = $this->db->http()->post($this->createUrl([$index, '_cache', 'clear']))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->post([$index, '_cache', 'clear']);
 	}
 
 	/**
@@ -315,8 +261,7 @@ class Command extends Component
 	 */
 	public function flushIndex($index = '_all')
 	{
-		$response = $this->db->http()->post($this->createUrl([$index, '_flush']))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->post([$index, '_flush']);
 	}
 
 	/**
@@ -324,8 +269,7 @@ class Command extends Component
 	 */
 	public function refreshIndex($index)
 	{
-		$response = $this->db->http()->post($this->createUrl([$index, '_refresh']))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->post([$index, '_refresh']);
 	}
 
 	// TODO http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-optimize.html
@@ -338,8 +282,7 @@ class Command extends Component
 	public function setMapping($index, $type, $mapping)
 	{
 		$body = $mapping !== null ? Json::encode($mapping) : null;
-		$response = $this->db->http()->put($this->createUrl([$index, $type, '_mapping']), null, $body)->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->put([$index, $type, '_mapping'], $body);
 	}
 
 	/**
@@ -347,8 +290,7 @@ class Command extends Component
 	 */
 	public function getMapping($index = '_all', $type = '_all')
 	{
-		$response = $this->db->http()->get($this->createUrl([$index, $type, '_mapping']))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->get([$index, $type, '_mapping']);
 	}
 
 	/**
@@ -356,8 +298,7 @@ class Command extends Component
 	 */
 	public function deleteMapping($index, $type)
 	{
-		$response = $this->db->http()->delete($this->createUrl([$index, $type]))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->delete([$index, $type]);
 	}
 
 	/**
@@ -365,9 +306,7 @@ class Command extends Component
 	 */
 	public function getFieldMapping($index, $type = '_all')
 	{
-		// TODO
-		$response = $this->db->http()->put($this->createUrl([$index, $type, '_mapping']))->send();
-		return Json::decode($response->getBody(true));
+		return $this->db->put([$index, $type, '_mapping']);
 	}
 
 	/**
@@ -375,10 +314,8 @@ class Command extends Component
 	 */
 	public function analyze($options, $index = null)
 	{
-		// TODO
-		$response = $this->db->http()->put($this->createUrl([$index, $type, '_mapping']))->send();
-		return Json::decode($response->getBody(true));
-
+		// TODO implement
+//		return $this->db->put([$index]);
 	}
 
 	/**
@@ -390,10 +327,10 @@ class Command extends Component
 			'template' => $pattern,
 			'order' => $order,
 			'settings' => (object) $settings,
-			'mappings' => (object) $settings,
+			'mappings' => (object) $mappings,
 		]);
-		$response = $this->db->http()->put($this->createUrl(['_template', $name]), null, $body)->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->put(['_template', $name], $body);
+
 	}
 
 	/**
@@ -401,8 +338,8 @@ class Command extends Component
 	 */
 	public function deleteTemplate($name)
 	{
-		$response = $this->db->http()->delete($this->createUrl(['_template', $name]))->send();
-		return $response->getStatusCode() == 200;
+		return $this->db->delete(['_template', $name]);
+
 	}
 
 	/**
@@ -410,21 +347,6 @@ class Command extends Component
 	 */
 	public function getTemplate($name)
 	{
-		$response = $this->db->http()->get($this->createUrl(['_template', $name]))->send();
-		return Json::decode($response->getBody(true));
-	}
-
-	private function createUrl($path, $options = [])
-	{
-		$url = implode('/', array_map(function($a) {
-			return urlencode(is_array($a) ? implode(',', $a) : $a);
-		}, $path));
-
-		if (!empty($options) || !empty($this->options)) {
-			$options = array_merge($this->options, $options);
-			$url .= '?' . http_build_query($options);
-		}
-
-		return $url;
+		return $this->db->get(['_template', $name]);
 	}
 }
\ No newline at end of file
diff --git a/extensions/elasticsearch/Connection.php b/extensions/elasticsearch/Connection.php
index 46c1efb..1adc42b 100644
--- a/extensions/elasticsearch/Connection.php
+++ b/extensions/elasticsearch/Connection.php
@@ -8,68 +8,56 @@
 namespace yii\elasticsearch;
 
 
+use Guzzle\Http\Exception\ClientErrorResponseException;
+use Yii;
 use yii\base\Component;
+use yii\base\Exception;
 use yii\base\InvalidConfigException;
+use yii\helpers\Json;
 
 /**
  * elasticsearch Connection is used to connect to an elasticsearch cluster version 0.20 or higher
  *
- *
  * @author Carsten Brandt <mail@cebe.cc>
  * @since 2.0
  */
-class Connection extends Component
+abstract class Connection extends Component
 {
 	/**
 	 * @event Event an event that is triggered after a DB connection is established
 	 */
 	const EVENT_AFTER_OPEN = 'afterOpen';
 
-	// TODO add autodetection of cluster nodes
-	// http://localhost:9200/_cluster/nodes
-	public $nodes = array(
-		array(
-			'host' => 'localhost',
-			'port' => 9200,
-		)
-	);
-
-	// http://www.elasticsearch.org/guide/en/elasticsearch/client/php-api/current/_configuration.html#_example_configuring_http_basic_auth
-	public $auth = [];
-
-	// TODO use timeouts
 	/**
-	 * @var float timeout to use for connection to redis. If not set the timeout set in php.ini will be used: ini_get("default_socket_timeout")
+	 * @var bool whether to autodetect available cluster nodes on [[open()]]
 	 */
-	public $connectionTimeout = null;
+	public $autodetectCluster = true;
 	/**
-	 * @var float timeout to use for redis socket when reading and writing data. If not set the php default value will be used.
+	 * @var array cluster nodes
+	 * This is populated with the result of a cluster nodes request when [[autodetectCluster]] is true.
+	 * @see http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-info.html#cluster-nodes-info
 	 */
-	public $dataTimeout = null;
-
+	public $nodes = [
+		['http_address' => 'inet[/127.0.0.1:9200]'],
+	];
+	/**
+	 * @var array the active node. key of [[nodes]]. Will be randomly selected on [[open()]].
+	 */
+	public $activeNode;
 
+	// TODO http://www.elasticsearch.org/guide/en/elasticsearch/client/php-api/current/_configuration.html#_example_configuring_http_basic_auth
+	public $auth = [];
 
 	public function init()
 	{
-		if ($this->nodes === array()) {
-			throw new InvalidConfigException('elasticsearch needs at least one node.');
+		foreach($this->nodes as $node) {
+			if (!isset($node['http_address'])) {
+				throw new InvalidConfigException('Elasticsearch node needs at least a http_address configured.');
+			}
 		}
 	}
 
 	/**
-	 * Creates a command for execution.
-	 * @param string $query the SQL statement to be executed
-	 * @return Command the DB command
-	 */
-	public function createCommand($config = [])
-	{
-		$this->open();
-		$config['db'] = $this;
-		$command = new Command($config);
-		return $command;
-	}
-
-	/**
 	 * Closes the connection when this component is being serialized.
 	 * @return array
 	 */
@@ -85,7 +73,7 @@ class Connection extends Component
 	 */
 	public function getIsActive()
 	{
-		return false; // TODO implement
+		return $this->activeNode !== null;
 	}
 
 	/**
@@ -95,48 +83,37 @@ class Connection extends Component
 	 */
 	public function open()
 	{
-		// TODO select one node to be the active one.
-
-
-		foreach($this->nodes as $key => $node) {
-			if (is_array($node)) {
-				$this->nodes[$key] = new Node($node);
-			}
+		if ($this->activeNode !== null) {
+			return;
 		}
-/*		if ($this->_socket === null) {
-			if (empty($this->dsn)) {
-				throw new InvalidConfigException('Connection.dsn cannot be empty.');
-			}
-			$dsn = explode('/', $this->dsn);
-			$host = $dsn[2];
-			if (strpos($host, ':')===false) {
-				$host .= ':6379';
+		if (empty($this->nodes)) {
+			throw new InvalidConfigException('elasticsearch needs at least one node to operate.');
+		}
+		if ($this->autodetectCluster) {
+			$node = reset($this->nodes);
+			$host = $node['http_address'];
+			if (strncmp($host, 'inet[/', 6) == 0) {
+				$host = substr($host, 6, -1);
 			}
-			$db = isset($dsn[3]) ? $dsn[3] : 0;
-
-			\Yii::trace('Opening DB connection: ' . $this->dsn, __CLASS__);
-			$this->_socket = @stream_socket_client(
-				$host,
-				$errorNumber,
-				$errorDescription,
-				$this->connectionTimeout ? $this->connectionTimeout : ini_get("default_socket_timeout")
-			);
-			if ($this->_socket) {
-				if ($this->dataTimeout !== null) {
-					stream_set_timeout($this->_socket, $timeout=(int)$this->dataTimeout, (int) (($this->dataTimeout - $timeout) * 1000000));
-				}
-				if ($this->password !== null) {
-					$this->executeCommand('AUTH', array($this->password));
-				}
-				$this->executeCommand('SELECT', array($db));
-				$this->initConnection();
-			} else {
-				\Yii::error("Failed to open DB connection ({$this->dsn}): " . $errorNumber . ' - ' . $errorDescription, __CLASS__);
-				$message = YII_DEBUG ? 'Failed to open DB connection: ' . $errorNumber . ' - ' . $errorDescription : 'Failed to open DB connection.';
-				throw new Exception($message, $errorDescription, (int)$errorNumber);
+			$response = $this->httpRequest('get', 'http://' . $host . '/_cluster/nodes');
+			$this->nodes = $response['nodes'];
+			if (empty($this->nodes)) {
+				throw new Exception('cluster autodetection did not find any active node.');
 			}
-		}*/
-		// TODO implement
+		}
+		$this->selectActiveNode();
+		Yii::trace('Opening connection to elasticsearch. Nodes in cluster: ' . count($this->nodes)
+			. ', active node: ' . $this->nodes[$this->activeNode]['http_address'], __CLASS__);
+		$this->initConnection();
+	}
+
+	/**
+	 * select active node randomly
+	 */
+	public function selectActiveNode()
+	{
+		$keys = array_keys($this->nodes);
+		$this->activeNode = $keys[rand(0, count($keys) - 1)];
 	}
 
 	/**
@@ -145,14 +122,9 @@ class Connection extends Component
 	 */
 	public function close()
 	{
-		// TODO implement
-/*		if ($this->_socket !== null) {
-			\Yii::trace('Closing DB connection: ' . $this->dsn, __CLASS__);
-			$this->executeCommand('QUIT');
-			stream_socket_shutdown($this->_socket, STREAM_SHUT_RDWR);
-			$this->_socket = null;
-			$this->_transaction = null;
-		}*/
+		Yii::trace('Closing connection to elasticsearch. Active node was: '
+			. $this->nodes[$this->activeNode]['http_address'], __CLASS__);
+		$this->activeNode = null;
 	}
 
 	/**
@@ -174,9 +146,17 @@ class Connection extends Component
 		return 'elasticsearch';
 	}
 
-	public function getNodeInfo()
+	/**
+	 * Creates a command for execution.
+	 * @param array $config the configuration for the Command class
+	 * @return Command the DB command
+	 */
+	public function createCommand($config = [])
 	{
-		// TODO HTTP request to localhost:9200/
+		$this->open();
+		$config['db'] = $this;
+		$command = new Command($config);
+		return $command;
 	}
 
 	public function getQueryBuilder()
@@ -184,13 +164,58 @@ class Connection extends Component
 		return new QueryBuilder($this);
 	}
 
-	/**
-	 * @return \Guzzle\Http\Client
-	 */
-	public function http()
+	public function get($url, $options = [], $body = null, $validCodes = [])
+	{
+		$this->open();
+		return $this->httpRequest('get', $this->createUrl($url, $options), $body);
+	}
+
+	public function head($url, $options = [], $body = null)
+	{
+		$this->open();
+		return $this->httpRequest('head', $this->createUrl($url, $options), $body);
+	}
+
+	public function post($url, $options = [], $body = null)
+	{
+		$this->open();
+		return $this->httpRequest('post', $this->createUrl($url, $options), $body);
+	}
+
+	public function put($url, $options = [], $body = null)
+	{
+		$this->open();
+		return $this->httpRequest('put', $this->createUrl($url, $options), $body);
+	}
+
+	public function delete($url, $options = [], $body = null)
+	{
+		$this->open();
+		return $this->httpRequest('delete', $this->createUrl($url, $options), $body);
+	}
+
+	private function createUrl($path, $options = [])
+	{
+		$url = implode('/', array_map(function($a) {
+			return urlencode(is_array($a) ? implode(',', $a) : $a);
+		}, $path));
+
+		if (!empty($options)) {
+			$url .= '?' . http_build_query($options);
+		}
+
+		return $url;
+	}
+
+	protected abstract function httpRequest($type, $url, $body = null);
+
+	public function getNodeInfo()
+	{
+		return $this->get([]);
+	}
+
+	public function getClusterState()
 	{
-		$guzzle = new \Guzzle\Http\Client('http://localhost:9200/');
-		//$guzzle->setDefaultOption()
-		return $guzzle;
+		return $this->get(['_cluster', 'state']);
 	}
 }
\ No newline at end of file
diff --git a/extensions/elasticsearch/GuzzleConnection.php b/extensions/elasticsearch/GuzzleConnection.php
new file mode 100644
index 0000000..82f2fd1
--- /dev/null
+++ b/extensions/elasticsearch/GuzzleConnection.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ * 
+ * 
+ * @author Carsten Brandt <mail@cebe.cc>
+ */
+
+namespace yii\elasticsearch;
+
+
+use Guzzle\Http\Exception\ClientErrorResponseException;
+use yii\base\Exception;
+use yii\helpers\Json;
+
+class GuzzleConnection extends Connection
+{
+	/**
+	 * @var \Guzzle\Http\Client
+	 */
+	private $_http;
+
+	protected function httpRequest($type, $url, $body = null)
+	{
+		if ($this->_http === null) {
+			$this->_http = new \Guzzle\Http\Client('http://localhost:9200/');// TODO use active node
+			//$guzzle->setDefaultOption()
+		}
+		$requestOptions = [];
+		if ($type == 'head') {
+			$requestOptions['exceptions'] = false;
+		}
+		if ($type == 'get' && $body !== null) {
+			$type = 'post';
+		}
+		try{
+			$response = $this->_http->createRequest(
+				strtoupper($type)
+				, $url,
+				null,
+				$body,
+				$requestOptions
+			)->send();
+		} catch(ClientErrorResponseException $e) {
+			if ($e->getResponse()->getStatusCode() == 404) {
+				return false;
+			}
+			throw new Exception("elasticsearch error:\n\n"
+				. $body . "\n\n" . $e->getMessage()
+				. print_r(Json::decode($e->getResponse()->getBody(true)), true), 0, $e);
+		}
+		if ($type == 'head') {
+			return $response->getStatusCode() == 200;
+		}
+		return Json::decode($response->getBody(true));
+	}
+
+}
\ No newline at end of file
diff --git a/extensions/elasticsearch/Query.php b/extensions/elasticsearch/Query.php
index 23d9de1..db6e137 100644
--- a/extensions/elasticsearch/Query.php
+++ b/extensions/elasticsearch/Query.php
@@ -84,7 +84,7 @@ class Query extends Component implements QueryInterface
 	 */
 	public function all($db = null)
 	{
-		$result = $this->createCommand($db)->queryAll();
+		$result = $this->createCommand($db)->search();
 		// TODO publish facet results
 		$rows = $result['hits'];
 		if ($this->indexBy === null && $this->fields === null) {
@@ -118,7 +118,7 @@ class Query extends Component implements QueryInterface
 	public function one($db = null)
 	{
 		$options['size'] = 1;
-		$result = $this->createCommand($db)->queryAll($options);
+		$result = $this->createCommand($db)->search($options);
 		// TODO publish facet results
 		if (empty($result['hits'])) {
 			return false;
@@ -175,7 +175,7 @@ class Query extends Component implements QueryInterface
 	{
 		$command = $this->createCommand($db);
 		$command->queryParts['fields'] = [$field];
-		$rows = $command->queryAll()['hits'];
+		$rows = $command->search()['hits'];
 		$result = [];
 		foreach ($rows as $row) {
 			$result[] = isset($row['fields'][$field]) ? $row['fields'][$field] : null;
@@ -196,7 +196,9 @@ class Query extends Component implements QueryInterface
 		// only when no facety are registerted.
 		// http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-count.html
 
-		$count = $this->createCommand($db)->queryCount()['total'];
+		$options = [];
+		$options['search_type'] = 'count';
+		$count = $this->createCommand($db)->search($options)['total'];
 		if ($this->limit === null && $this->offset === null) {
 			return $count;
 		} elseif ($this->offset !== null) {
diff --git a/extensions/elasticsearch/README.md b/extensions/elasticsearch/README.md
index bc272d1..4894c85 100644
--- a/extensions/elasticsearch/README.md
+++ b/extensions/elasticsearch/README.md
@@ -14,7 +14,7 @@ return [
         'elasticsearch' => [
             'class' => 'yii\elasticsearch\Connection',
             'hosts' => [
-                ['hostname' => 'localhost', 'port' => 9200],
+                ['http_address' => '127.0.0.1:9200'],
                 // configure more hosts if you have a cluster
             ],
         ],
diff --git a/tests/unit/data/ar/elasticsearch/ActiveRecord.php b/tests/unit/data/ar/elasticsearch/ActiveRecord.php
index 6c4dff6..aa1f304 100644
--- a/tests/unit/data/ar/elasticsearch/ActiveRecord.php
+++ b/tests/unit/data/ar/elasticsearch/ActiveRecord.php
@@ -24,4 +24,9 @@ class ActiveRecord extends \yii\elasticsearch\ActiveRecord
 	{
 		return self::$db;
 	}
+
+	public static function index()
+	{
+		return 'yiitest';
+	}
 }
diff --git a/tests/unit/extensions/elasticsearch/ActiveRecordTest.php b/tests/unit/extensions/elasticsearch/ActiveRecordTest.php
index 65825e9..69f9edb 100644
--- a/tests/unit/extensions/elasticsearch/ActiveRecordTest.php
+++ b/tests/unit/extensions/elasticsearch/ActiveRecordTest.php
@@ -43,10 +43,12 @@ class ActiveRecordTest extends ElasticSearchTestCase
 		/** @var Connection $db */
 		$db = ActiveRecord::$db = $this->getConnection();
 
-		// delete all indexes
-		$db->http()->delete('_all')->send();
+		// delete index
+		if ($db->createCommand()->indexExists('yiitest')) {
+			$db->createCommand()->deleteIndex('yiitest');
+		}
 
-		$db->http()->post('items', null, Json::encode([
+		$db->post(['yiitest'], [], Json::encode([
 			'mappings' => [
 				"item" => [
 		            "_source" => [ "enabled" => true ],
@@ -56,19 +58,7 @@ class ActiveRecordTest extends ElasticSearchTestCase
 		            ]
 		        ]
 			],
-		]))->send();
-
-		$db->http()->post('customers', null, Json::encode([
-			'mappings' => [
-				"item" => [
-		            "_source" => [ "enabled" => true ],
-		            "properties" => [
-						// this is for the boolean test
-		                "status" => ["type" => "boolean"],
-		            ]
-		        ]
-			],
-		]))->send();
+		]));
 
 		$customer = new Customer();
 		$customer->id = 1;
@@ -281,10 +271,10 @@ class ActiveRecordTest extends ElasticSearchTestCase
 	public function testBooleanAttribute()
 	{
 		$db = $this->getConnection();
-		$db->createCommand()->deleteIndex('customers');
-		$db->http()->post('customers', null, Json::encode([
+		$db->createCommand()->deleteIndex('yiitest');
+		$db->post(['yiitest'], [], Json::encode([
 			'mappings' => [
-				"item" => [
+				"customer" => [
 		            "_source" => [ "enabled" => true ],
 		            "properties" => [
 						// this is for the boolean test
@@ -292,7 +282,7 @@ class ActiveRecordTest extends ElasticSearchTestCase
 		            ]
 		        ]
 			],
-		]))->send();
+		]));
 
 		$customerClass = $this->getCustomerClass();
 		$customer = new $customerClass();
diff --git a/tests/unit/extensions/elasticsearch/ElasticSearchConnectionTest.php b/tests/unit/extensions/elasticsearch/ElasticSearchConnectionTest.php
index 7e04d90..9e37466 100644
--- a/tests/unit/extensions/elasticsearch/ElasticSearchConnectionTest.php
+++ b/tests/unit/extensions/elasticsearch/ElasticSearchConnectionTest.php
@@ -2,13 +2,28 @@
 
 namespace yiiunit\extensions\elasticsearch;
 
-use yii\redis\Connection;
+use yii\elasticsearch\Connection;
+use yii\elasticsearch\GuzzleConnection;
 
 /**
  * @group elasticsearch
  */
 class ElasticSearchConnectionTest extends ElasticSearchTestCase
 {
-	// TODO
+	public function testOpen()
+	{
+		$connection = new GuzzleConnection();
+		$connection->autodetectCluster;
+		$connection->nodes = [
+			['http_address' => 'inet[/127.0.0.1:9200]'],
+		];
+		$this->assertNull($connection->activeNode);
+		$connection->open();
+		$this->assertNotNull($connection->activeNode);
+		$this->assertArrayHasKey('name', reset($connection->nodes));
+		$this->assertArrayHasKey('hostname', reset($connection->nodes));
+		$this->assertArrayHasKey('version', reset($connection->nodes));
+		$this->assertArrayHasKey('http_address', reset($connection->nodes));
+	}
 
 }
\ No newline at end of file
diff --git a/tests/unit/extensions/elasticsearch/ElasticSearchTestCase.php b/tests/unit/extensions/elasticsearch/ElasticSearchTestCase.php
index 532d1d5..dc639d7 100644
--- a/tests/unit/extensions/elasticsearch/ElasticSearchTestCase.php
+++ b/tests/unit/extensions/elasticsearch/ElasticSearchTestCase.php
@@ -4,6 +4,7 @@ namespace yiiunit\extensions\elasticsearch;
 
 use Yii;
 use yii\elasticsearch\Connection;
+use yii\elasticsearch\GuzzleConnection;
 use yiiunit\TestCase;
 
 Yii::setAlias('@yii/elasticsearch', __DIR__ . '/../../../../extensions/elasticsearch');
@@ -42,7 +43,7 @@ class ElasticSearchTestCase extends TestCase
 	{
 		$databases = $this->getParam('databases');
 		$params = isset($databases['elasticsearch']) ? $databases['elasticsearch'] : array();
-		$db = new Connection;
+		$db = new GuzzleConnection();
 		if ($reset) {
 			$db->open();
 		}