diff --git a/.travis.yml b/.travis.yml
index 64c93d3a8..465c0d807 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ env:
   global:
     - DEPENDENCIES=standard
     - APC=true
-    - TRAVIS_TEST_EXCLUDES="--exclude-group slow,jpgraph"
+    - TRAVIS_TEST_EXCLUDES="--exclude-group slow,jpgraph,pushserver"
   matrix:
     - DB=mysql
     - DB=pgsql
@@ -30,7 +30,10 @@ matrix:
   include:
     # httpd-based
     - php: 5.4
-      env: DB=mysql TEST_ADAPTER=HTTP
+      env: DB=mysql TEST_COMPONENT=HTTPD
+    # push-server
+    - php: 5.4
+      env: DB=mysql TEST_COMPONENT=PUSH_SERVER
     # from..to
     - php: 5.4
       env: DB=mysql DEPENDENCIES=lowest
@@ -76,7 +79,7 @@ install:
     - if [ "$DEPENDENCIES" = "highest" ]; then composer update -n; fi
     - if [ "$JSLINT" = true ]; then npm install; fi
     - if [ "$SECURITY" = true ]; then wget http://get.sensiolabs.org/security-checker.phar; fi
-    - if [ "$TEST_ADAPTER" = "HTTP" ]; then composer require volkszaehler/httpd:dev-master jenssegers/proxy:~2.2; fi
+    - if [ "$TEST_COMPONENT" = "HTTPD" ]; then composer require volkszaehler/httpd:dev-master jenssegers/proxy:~2.2; fi
 
     # add apc cache
     - |
@@ -100,7 +103,7 @@ before_script:
     - sed -i "s/'vz'/'$USER'/" etc/volkszaehler.conf.php
     - sed -i "s/'demo'/'$PASSWORD'/" etc/volkszaehler.conf.php
     - sed -i "s/'volkszaehler'/'$DATABASE'/" etc/volkszaehler.conf.php
-    - if [ "$DB" = "sqlite" ]; then sed -i "s/\?>/\$config['db']['path']\ =\ VZ_DIR.'\/sqlite.db3'\n?>/" etc/volkszaehler.conf.php; fi
+    - if [ "$DB" = "sqlite" ]; then sed -i "s/\?>/\$config['db']['path']\ =\ VZ_DIR.'\/sqlite.db3'\;\n?>/" etc/volkszaehler.conf.php; fi
     - cat etc/volkszaehler.conf.php
 
     # create database
@@ -112,15 +115,21 @@ before_script:
 
     # setup local middleware
     - |
-      if [ "$TEST_ADAPTER" = "HTTP" ]; then
-        sed -i "s/testAdapter\" value=\".*\"/testAdapter\" value=\"$TEST_ADAPTER\"/" phpunit.xml
+      if [ "$TEST_COMPONENT" = "HTTPD" ]; then
+        sed -i "s/testAdapter\" value=\".*\"/testAdapter\" value=\"$TEST_COMPONENT\"/" phpunit.xml
         vendor/bin/httpd.php start &
         HTTPD_PID=$!
         echo "Started httpd with pid $HTTPD_PID"
       fi
 
+    # push server tests
+    - if [ "$TEST_COMPONENT" = "PUSH_SERVER" ]; then sed -i "s/\?>/\$config['push']['enabled']\ =\ true\;\n?>/" etc/volkszaehler.conf.php; fi
+    - if [ "$TEST_COMPONENT" = "PUSH_SERVER" ]; then
+        php misc/tools/push-server.php &
+      fi
+
 after_script:
-    - if [ "$TEST_ADAPTER" = "HTTP" ]; then kill -9 $HTTPD_PID; fi
+    - if [ "$TEST_COMPONENT" = "HTTPD" ]; then kill -9 $HTTPD_PID; fi
 
 script:
     # run core tests
@@ -129,7 +138,7 @@ script:
     # run aggregation tests (mysql only)
     - if [ "$DB" = "mysql" ]; then sed -i "s/\?>/\$config['aggregation']\ =\ true;\n?>/" etc/volkszaehler.conf.php; fi
     - |
-      if [ "$DB" = "mysql" -a "$TEST_ADAPTER" = "HTTP" ]; then
+      if [ "$DB" = "mysql" -a "$TEST_COMPONENT" = "HTTPD" ]; then
         kill -9 $HTTPD_PID
         sleep 10
         vendor/bin/httpd.php start &
@@ -141,6 +150,9 @@ script:
     # run aggregation tool itself (mysql only)
     - if [ "$DB" = "mysql" ]; then php misc/tools/aggregate.php run -m delta -l hour; fi
 
+    # push server tests
+    - if [ "$TEST_COMPONENT" = "PUSH_SERVER" ]; then phpunit --group pushserver; fi
+
     # jslint javascript sources
     - if [ "$JSLINT" = true ]; then gulp jshint; fi
 
diff --git a/lib/Server/MiddlewareAdapter.php b/lib/Server/MiddlewareAdapter.php
index f26c320ba..96c19e757 100644
--- a/lib/Server/MiddlewareAdapter.php
+++ b/lib/Server/MiddlewareAdapter.php
@@ -45,11 +45,6 @@ class MiddlewareAdapter {
 	 */
 	protected $em;
 
-	/**
-	 * @var EntityController
-	 */
-	protected $controller;
-
 	/**
 	 * @var array
 	 */
@@ -68,9 +63,8 @@ public function removeAdapter(PushTransportInterface $adapter) {
 	}
 
 	protected function openController($force = false) {
-		if ($force || $this->em == null || $this->controller == null || !$this->em->isOpen()) {
+		if ($force || $this->em == null || !$this->em->isOpen()) {
 			$this->em = Router::createEntityManager(false);
-			$this->controller = new EntityController(new Request(), $this->em);
 		}
 	}
 
@@ -78,7 +72,7 @@ protected function connectToMiddleware($uuid) {
 		try {
 			$this->openController();
 
-			$entity = $this->controller->getSingleEntity($uuid);
+			$entity = EntityController::factory($this->em, $uuid);
 			$class = $entity->getDefinition()->getInterpreter();
 			$interpreter = new $class($entity, $this->em, null, null);
 
@@ -132,24 +126,27 @@ protected function convertRawTuple(Interpreter\Interpreter $interpreter, $tuple)
 	 * @return null|string Returns null on invalid request
 	 */
 	public function handlePushMessage($json) {
-		$msg = json_decode($json, true);
 		$response = array(
 			'version' => VZ_VERSION,
 			'data' => array()
 		);
 
 		// validate input message
+		if (null === ($msg = json_decode($json, true))) {
+			return null;
+		}
 		if (null === ($data = @$msg['data']) || !is_array($data)) {
 			return null;
 		}
 
 		// loop through channels
 		foreach ($data as $channel) {
+			// validate channel structure
 			if (null === ($uuid = @$channel['uuid'])) {
-				break;
+				return null;
 			}
 			if (null === ($tuples = @$channel['tuples']) || !is_array($tuples) || !count($tuples)) {
-				break;
+				return null;
 			}
 
 			// get interpreter if no client has connected yet
@@ -161,6 +158,10 @@ public function handlePushMessage($json) {
 			// convert raw tuples using interpreter rules
 			$transformed = array();
 			foreach ($tuples as $tuple) {
+				if (!is_array($tuple) || count($tuple) < 2) {
+					return null;
+				}
+
 				if (count($tuple) < 3) {
 					$tuple[] = 1;
 				}
diff --git a/phpunit.xml b/phpunit.xml
index 8bf684f56..9c2b6f1bd 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -12,6 +12,7 @@
       <exclude>
         <group>slow</group>
         <group>jpgraph</group>
+        <group>pushserver</group>
       </exclude>
     </groups>
 
diff --git a/test/PushServerTest.php b/test/PushServerTest.php
new file mode 100644
index 000000000..9ca85d343
--- /dev/null
+++ b/test/PushServerTest.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * Meter tests
+ *
+ * @package Test
+ * @author Andreas Götz <cpuidle@gmx.de>
+ */
+
+namespace Tests;
+
+use Volkszaehler\Util;
+
+class PushServerTest extends Data
+{
+	// channel properties
+	static $resolution = 100;
+
+	/**
+	 * Create channel
+	 */
+	static function setupBeforeClass() {
+		parent::setupBeforeClass();
+		self::$uuid = self::createChannel('Counter', 'electric meter', self::$resolution);
+	}
+
+	/**
+	 * @group pushserver
+	 */
+	function testPushMessage() {
+		$this->assertTrue(Util\Configuration::read('push.enabled'), 'Push server disabled');
+
+		$exitCode = null;
+		$port = Util\Configuration::read('push.server');
+		$curl = "curl %s -s -m 3 -X POST -d '{\"data\":[{\"uuid\":\"%s\",\"tuples\":[[1,1,1]]}]}' localhost:%d 2>&1";
+
+		// run and test for failure
+		$cmd = sprintf($curl, '-f', self::$uuid, $port);
+		passthru($cmd, $exitCode);
+
+		// run to get output
+		if ($exitCode !== 0) {
+			$cmd = sprintf($curl, '-i', self::$uuid, $port);
+			passthru($cmd);
+		}
+
+		$this->assertTrue($exitCode === 0, sprintf('Curl failed with exit code %d', $exitCode));
+	}
+}
+
+?>