diff --git a/libs/main/mqtt_client/pimqttclient.h b/libs/main/mqtt_client/pimqttclient.h
index 2cda3414..edd0fbe5 100644
--- a/libs/main/mqtt_client/pimqttclient.h
+++ b/libs/main/mqtt_client/pimqttclient.h
@@ -70,7 +70,6 @@ private:
 		Idle,
 		Connecting,
 		Connected,
-		Disconnecting,
 	};
 
 	struct ConnectInfo {
@@ -88,7 +87,8 @@ private:
 	void mqtt_deliveryComplete(int token);
 	void mqtt_messageArrived(const Message & msg);
 
-	void connectInternal();
+	void connectInternal(const ConnectInfo & ci);
+	void disconnectInternal();
 	void publishInternal(const Message & m);
 	void subscribeInternal(const Subscribe & sub);
 	void unsubscribeInternal(const PIString & topic);
@@ -97,15 +97,10 @@ private:
 
 	void run();
 
-	PIProtectedVariable<PIQueue<Message>> pub_queue;
-	PIProtectedVariable<PIQueue<Subscribe>> sub_queue;
-	PIProtectedVariable<PIQueue<PIString>> unsub_queue;
-	PIProtectedVariable<ConnectInfo> connect_info;
-	PIThreadNotifier notifier;
-	std::atomic_int m_status     = {Idle};
-	PISystemTime connect_timeout = 10_s;
-	PIThread * thread            = nullptr;
-	// PIThreadPoolWorker * worker = nullptr;
+	std::atomic_int m_status      = {Idle};
+	std::atomic_bool is_destoying = {false};
+	PISystemTime connect_timeout  = 10_s;
+	PIThreadPoolWorker * worker   = nullptr;
 };
 
 
diff --git a/libs/mqtt_client/pimqttclient.cpp b/libs/mqtt_client/pimqttclient.cpp
index 6a787dbb..d23ad227 100644
--- a/libs/mqtt_client/pimqttclient.cpp
+++ b/libs/mqtt_client/pimqttclient.cpp
@@ -57,57 +57,56 @@ PRIVATE_DEFINITION_END(PIMQTT::Client)
 
 
 PIMQTT::Client::Client() {
-	thread = new PIThread([this] { run(); });
-	thread->start();
-	// worker = new PIThreadPoolWorker(1);
-	// worker->start();
+	worker = new PIThreadPoolWorker(1);
+	worker->start();
 }
 
 
 PIMQTT::Client::~Client() {
-	// worker->stopAndWait();
-	// piDeleteSafety(worker);
-	thread->stop();
+	is_destoying = true;
+	worker->clearTasks();
 	disconnect();
-	thread->waitForFinish();
-	piDeleteSafety(thread);
+	worker->waitForTasks();
+	worker->stopAndWait();
+	piDeleteSafety(worker);
 }
 
 
 void PIMQTT::Client::connect(const PIString & address, const PIString & client, const PIString & username, const PIString & password) {
-	auto ci      = connect_info.getRef();
-	ci->address  = address;
-	ci->clientID = client;
-	ci->username = username;
-	ci->password = password;
-	changeStatus(Connecting);
+	if (is_destoying) return;
+	ConnectInfo ci;
+	ci.address  = address;
+	ci.clientID = client;
+	ci.username = username;
+	ci.password = password;
+	worker->enqueueTask([this, ci] { connectInternal(ci); });
 }
 
 
 void PIMQTT::Client::disconnect() {
-	changeStatus(Disconnecting);
+	worker->enqueueTask([this] { disconnectInternal(); });
 }
 
 
 void PIMQTT::Client::subscribe(const PIString & topic, QoS qos) {
-	sub_queue.getRef()->enqueue({topic, qos});
-	notifier.notify();
+	if (is_destoying) return;
+	worker->enqueueTask([this, topic, qos] { subscribeInternal({topic, qos}); });
 }
 
 
 void PIMQTT::Client::unsubscribe(const PIString & topic) {
-	unsub_queue.getRef()->enqueue(topic);
-	notifier.notify();
+	if (is_destoying) return;
+	worker->enqueueTask([this, topic] { unsubscribeInternal(topic); });
 }
 
 
 void PIMQTT::Client::publish(const PIString & topic, const PIByteArray & msg, QoS qos) {
+	if (is_destoying) return;
 	Message m;
 	m.topic   = topic;
 	m.payload = msg;
 	m.qos     = qos;
-	pub_queue.getRef()->enqueue(m);
-	notifier.notify();
+	worker->enqueueTask([this, m] { publishInternal(m); });
 }
 
 
@@ -128,10 +127,10 @@ void PIMQTT::Client::mqtt_messageArrived(const Message & msg) {
 }
 
 
-void PIMQTT::Client::connectInternal() {
+void PIMQTT::Client::connectInternal(const ConnectInfo & ci) {
 	destroy();
+	changeStatus(Connecting);
 	PRIVATE->connected        = false;
-	auto ci                   = connect_info.get();
 	PINetworkAddress net_addr = PINetworkAddress::resolve(ci.address);
 	if (net_addr.port() == 0) net_addr.setPort(1883);
 	PIString server_uri = "tcp://" + net_addr.toString();
@@ -161,6 +160,15 @@ void PIMQTT::Client::connectInternal() {
 }
 
 
+inline void PIMQTT::Client::disconnectInternal() {
+	bool was_connected = PRIVATE->connected;
+	changeStatus(Idle);
+	destroy();
+	if (was_connected) disconnected(Error::Unknown);
+	PRIVATE->connected = false;
+}
+
+
 void PIMQTT::Client::publishInternal(const Message & m) {
 	if (!PRIVATE->client) return;
 	MQTTClient_message pubmsg = MQTTClient_message_initializer;
@@ -203,57 +211,4 @@ void PIMQTT::Client::destroy() {
 
 void PIMQTT::Client::changeStatus(Status s) {
 	m_status = s;
-	notifier.notify();
-}
-
-
-void PIMQTT::Client::run() {
-	notifier.wait();
-	piCoutObj << "run" << (int)m_status;
-	if (thread->isStopping() || m_status == Disconnecting) {
-		bool was_connected = PRIVATE->connected;
-		changeStatus(Idle);
-		destroy();
-		if (was_connected) disconnected(Error::Unknown);
-		PRIVATE->connected = false;
-		return;
-	}
-	if (m_status == Connecting) {
-		connectInternal();
-		return;
-	}
-	if (m_status == Connected) {
-		Subscribe sub;
-		{
-			auto ref = sub_queue.getRef();
-			if (!ref->isEmpty()) sub = ref->dequeue();
-		}
-		if (sub.topic.isNotEmpty()) {
-			subscribeInternal(sub);
-			notifier.notify();
-			return;
-		}
-
-		PIString topic;
-		{
-			auto ref = unsub_queue.getRef();
-			if (!ref->isEmpty()) topic = ref->dequeue();
-		}
-		if (topic.isNotEmpty()) {
-			unsubscribeInternal(topic);
-			notifier.notify();
-			return;
-		}
-
-		Message msg;
-		{
-			auto ref = pub_queue.getRef();
-			if (!ref->isEmpty()) msg = ref->dequeue();
-		}
-		if (msg.isValid()) {
-			publishInternal(msg);
-			notifier.notify();
-			return;
-		}
-	}
 }