diff --git a/apps/aqhome-nodes/0BUILD b/apps/aqhome-nodes/0BUILD
index 243ce46..402448b 100644
--- a/apps/aqhome-nodes/0BUILD
+++ b/apps/aqhome-nodes/0BUILD
@@ -44,6 +44,7 @@
       r_forward.h
       r_setaccmsggrps.h
       r_getnodes.h
+      r_publish.h
       server.h
       server_p.h
     </headers>
@@ -59,6 +60,7 @@
       r_forward.c
       r_setaccmsggrps.c
       r_getnodes.c
+      r_publish.c
       main.c
     </sources>
 
diff --git a/apps/aqhome-nodes/main.c b/apps/aqhome-nodes/main.c
index 0d6fc9e..0c919d7 100644
--- a/apps/aqhome-nodes/main.c
+++ b/apps/aqhome-nodes/main.c
@@ -36,6 +36,7 @@
 
 #define CONNCLEAN_INTERVAL_IN_SECS  2
 #define CONNCHECK_INTERVAL_IN_SECS  10
+#define PING_INTERVAL_IN_SECS      120
 
 
 
@@ -133,11 +134,13 @@ void _runService(AQH_OBJECT *aqh, AQH_EVENT_LOOP *eventLoop)
   int timeout;
   time_t timeLastConnectionCleanup;
   time_t timeLastConnCheck;
+  time_t timeLastPingSend;
 
   timeout=AQH_NodeServer_GetTimeout(aqh);
   timeStart=time(NULL);
   timeLastConnectionCleanup=time(NULL);
   timeLastConnCheck=time(NULL);
+  timeLastPingSend=time(NULL);
 
   while(!stopService) {
     time_t now;
@@ -146,6 +149,7 @@ void _runService(AQH_OBJECT *aqh, AQH_EVENT_LOOP *eventLoop)
     AQH_NodeServer_HandleTtyMsgs(aqh);
     AQH_NodeServer_HandleClientMsgs(aqh);
     AQH_NodeServer_HandleBrokerMsgs(aqh);
+    AQH_NodeServer_HandleMqttMsgs(aqh);
 
     now=time(NULL);
 
@@ -159,9 +163,20 @@ void _runService(AQH_OBJECT *aqh, AQH_EVENT_LOOP *eventLoop)
       DBG_INFO(NULL, "Check connections");
       AQH_NodeServer_CheckBrokerConnection(aqh);
       AQH_NodeServer_CheckTtyConnection(aqh);
+      AQH_NodeServer_CheckMqttConnection(aqh);
       timeLastConnCheck=now;
     }
 
+    if (_diffInSeconds(now, timeLastPingSend)>PING_INTERVAL_IN_SECS) {
+      int rv;
+
+      rv=AQH_NodeServer_SendPing(aqh);
+      if (rv<0) {
+        DBG_INFO(NULL, "Error sending PING");
+      }
+      timeLastPingSend=time(NULL);
+    }
+
     if (timeout && (_diffInSeconds(now, timeStart)>timeout)) {
       DBG_INFO(NULL, "Timeout");
       break;
diff --git a/apps/aqhome-nodes/r_publish.c b/apps/aqhome-nodes/r_publish.c
new file mode 100644
index 0000000..897fac4
--- /dev/null
+++ b/apps/aqhome-nodes/r_publish.c
@@ -0,0 +1,34 @@
+/****************************************************************************
+ * This file is part of the project AqHome.
+ * AqHome (c) by 2025 Martin Preuss, all rights reserved.
+ *
+ * The license for this file can be found in the file COPYING which you
+ * should have received along with this file.
+ ****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+
+#include "./r_publish.h"
+#include "./server_p.h"
+#include "aqhome/ipc2/endpoint.h"
+#include <aqhome/msg/mqtt/m_mqtt_publish.h>
+
+#include <gwenhywfar/debug.h>
+
+
+
+/* ------------------------------------------------------------------------------------------------
+ * code
+ * ------------------------------------------------------------------------------------------------
+ */
+
+void AQH_NodeServer_HandlePublishMsg(AQH_OBJECT *o, AQH_OBJECT *ep, const AQH_MESSAGE *msg)
+{
+
+}
+
+
+
diff --git a/apps/aqhome-nodes/r_publish.h b/apps/aqhome-nodes/r_publish.h
new file mode 100644
index 0000000..b68046e
--- /dev/null
+++ b/apps/aqhome-nodes/r_publish.h
@@ -0,0 +1,28 @@
+/****************************************************************************
+ * This file is part of the project AqHome.
+ * AqHome (c) by 2025 Martin Preuss, all rights reserved.
+ *
+ * The license for this file can be found in the file COPYING which you
+ * should have received along with this file.
+ ****************************************************************************/
+
+#ifndef AQHOMED_R_PUBLISH_H
+#define AQHOMED_R_PUBLISH_H
+
+
+#include "./server.h"
+
+#include <aqhome/events2/object.h>
+#include <aqhome/ipc2/message.h>
+
+
+void AQH_NodeServer_HandlePublishMsg(AQH_OBJECT *o, AQH_OBJECT *ep, const AQH_MESSAGE *msg);
+
+
+
+
+
+
+#endif
+
+
diff --git a/apps/aqhome-nodes/server.c b/apps/aqhome-nodes/server.c
index 320f612..8a3f3a7 100644
--- a/apps/aqhome-nodes/server.c
+++ b/apps/aqhome-nodes/server.c
@@ -18,6 +18,7 @@
 #include "./r_forward.h"
 #include "./r_setaccmsggrps.h"
 #include "./r_getnodes.h"
+#include "./r_publish.h"
 
 #include <aqhome/aqhome.h>
 #include <aqhome/ipc2/ipc_endpoint.h>
@@ -41,6 +42,14 @@
 #include <aqhome/msg/node/m_value.h>
 #include <aqhome/msg/node/m_recvstats.h>
 #include <aqhome/msg/node/m_sendstats.h>
+#include <aqhome/ipc2/mqtt_endpoint.h>
+#include <aqhome/ipc2/mqtt_client.h>
+#include <aqhome/msg/mqtt/m_mqtt.h>
+#include <aqhome/msg/mqtt/m_mqtt_connect.h>
+#include <aqhome/msg/mqtt/m_mqtt_connack.h>
+#include <aqhome/msg/mqtt/m_mqtt_subscribe.h>
+#include <aqhome/msg/mqtt/m_mqtt_suback.h>
+#include <aqhome/msg/mqtt/m_mqtt_publish.h>
 #include <aqhome/data/value.h>
 
 #include <gwenhywfar/args.h>
@@ -70,13 +79,15 @@
 
 #define AQH_NODE_SERVER_BROKER_RESTARTTIME 10
 #define AQH_NODE_SERVER_TTY_RESTARTTIME 10
+#define AQH_NODE_SERVER_MQTT_RESTARTTIME 10
 
 
 enum {
   AQH_NODE_SERVER_SLOT_NEWCLIENT=1,
   AQH_NODE_SERVER_SLOT_CLIENTCLOSED,
   AQH_NODE_SERVER_SLOT_BROKERCLOSED,
-  AQH_NODE_SERVER_SLOT_TTYCLOSED
+  AQH_NODE_SERVER_SLOT_TTYCLOSED,
+  AQH_NODE_SERVER_SLOT_MQTTCLOSED,
 };
 
 
@@ -97,13 +108,17 @@ GWEN_INHERIT(AQH_OBJECT, AQH_NODE_SERVER)
 
 static void GWENHYWFAR_CB _freeData(void *bp, void *p);
 static void _readConfig(AQH_OBJECT *o, AQH_NODE_SERVER *xo, GWEN_DB_NODE *dbArgs);
-static const char *readCharConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, const char *defaultValue);
-static int readIntConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, int defaultValue, int nonValue);
+static const char *_readCharConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, const char *defaultValue);
+static int _readIntConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, int defaultValue, int nonValue);
 
 static int _startIpc(AQH_OBJECT *o, AQH_NODE_SERVER *xo);
 static int _startTty(AQH_OBJECT *o, AQH_NODE_SERVER *xo);
 static int _startBroker(AQH_OBJECT *o, AQH_NODE_SERVER *xo);
 static int _exchangeConnect(AQH_NODE_SERVER *xo, uint32_t flags);
+static int _startMqtt(AQH_OBJECT *o, AQH_NODE_SERVER *xo);
+static int _exchangeMqttConnect(AQH_NODE_SERVER *xo);
+static int _exchangeMqttSubscribe(AQH_NODE_SERVER *xo);
+
 static void _setupDb(AQH_NODE_SERVER *xo);
 static int _loadDeviceList(AQH_NODE_SERVER *xo);
 
@@ -112,11 +127,15 @@ static int _handleNewIpcClient(AQH_OBJECT *o, AQH_NODE_SERVER *xo, AQH_OBJECT *c
 static int _handleIpcClientDown(AQH_OBJECT *clientEndpoint);
 static int _handleBrokerDown(AQH_NODE_SERVER *xo);
 static int _handleTtyDown(AQH_NODE_SERVER *xo);
+static int _handleMqttDown(AQH_NODE_SERVER *xo);
 
 static void _handleMsgsFromClient(AQH_OBJECT *o, AQH_NODE_SERVER *xo, AQH_OBJECT *ep);
 static void _handleMsgFromClient(AQH_OBJECT *o, AQH_NODE_SERVER *xo, AQH_OBJECT *ep, const AQH_MESSAGE *msg);
-
+static void _handleMsgFromMqtt(AQH_OBJECT *o, AQH_OBJECT *ep, const AQH_MESSAGE *msg);
 static void _handleMsgFromTty(AQH_OBJECT *o, AQH_NODE_SERVER *xo, const AQH_MESSAGE *msg);
+static void _handleMqttMsgPingRsp(void);
+
+
 static void _writeTtyMsgToLogFile(AQH_NODE_SERVER *xo, const AQH_MESSAGE *msg);
 static void _forwardTtyMsgToBroker(AQH_OBJECT *o, AQH_NODE_SERVER *xo, const AQH_MESSAGE *msg);
 static void _forwardValueMessageToBroker(AQH_OBJECT *o, AQH_NODE_SERVER *xo, const AQH_MESSAGE *msg);
@@ -178,6 +197,7 @@ void GWENHYWFAR_CB _freeData(GWEN_UNUSED void *bp, void *p)
   AQH_Object_free(xo->ipcEndpoint);
   AQH_Object_free(xo->ttyEndpoint);
   AQH_Object_free(xo->brokerEndpoint);
+  AQH_Object_free(xo->mqttEndpoint);
   AQHNODE_Device_List_free(xo->deviceDefList);
   GWEN_DB_Group_free(xo->dbArgs);
   AQH_MsgRequest_free(xo->requestTree);
@@ -190,6 +210,9 @@ void GWENHYWFAR_CB _freeData(GWEN_UNUSED void *bp, void *p)
   free(xo->tcpAddress);
   free(xo->brokerAddress);
   free(xo->brokerClientId);
+  free(xo->mqttAddress);
+  free(xo->mqttClientId);
+  free(xo->mqttDiscoveryPrefix);
 
   GWEN_FREE_OBJECT(xo);
 }
@@ -361,6 +384,81 @@ void AQH_NodeServer_SetBrokerClientId(AQH_OBJECT *o, const char *s)
 
 
 
+void AQH_NodeServer_SetMqttAddress(AQH_OBJECT *o, const char *s)
+{
+  if (o) {
+    AQH_NODE_SERVER *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+    if (xo) {
+      free(xo->mqttAddress);
+      xo->mqttAddress=s?strdup(s):NULL;
+    }
+  }
+}
+
+
+void AQH_NodeServer_SetMqttPort(AQH_OBJECT *o, int i)
+{
+  if (o) {
+    AQH_NODE_SERVER *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+    if (xo) {
+      xo->mqttPort=i;
+    }
+  }
+}
+
+
+
+void AQH_NodeServer_SetMqttClientId(AQH_OBJECT *o, const char *s)
+{
+  if (o) {
+    AQH_NODE_SERVER *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+    if (xo) {
+      free(xo->mqttClientId);
+      xo->mqttClientId=s?strdup(s):NULL;
+    }
+  }
+}
+
+
+
+void AQH_NodeServer_SetMqttKeepAlive(AQH_OBJECT *o, int i)
+{
+  if (o) {
+    AQH_NODE_SERVER *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+    if (xo) {
+      xo->mqttKeepAlive=i;
+    }
+  }
+}
+
+
+
+void AQH_NodeServer_SetMqttDiscoveryPrefix(AQH_OBJECT *o, const char *s)
+{
+  if (o) {
+    AQH_NODE_SERVER *xo;
+
+    xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+    if (xo) {
+      free(xo->mqttDiscoveryPrefix);
+      xo->mqttDiscoveryPrefix=s?strdup(s):NULL;
+    }
+  }
+}
+
+
+
+
+
+
 
 
 /* xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
@@ -427,12 +525,25 @@ int AQH_NodeServer_Init(AQH_OBJECT *o, int argc, char **argv)
       DBG_INFO(NULL, "here (%d)", rv);
       return rv;
     }
-    DBG_INFO(NULL, "Starting Broker Connection");
-    rv=_startBroker(o, xo);
-    if (rv<0) {
-      DBG_INFO(NULL, "here (%d)", rv);
-      return rv;
+
+    if (xo->flags & AQHOMED_FLAGS_START_BROKER) {
+      DBG_INFO(NULL, "Starting Broker Connection");
+      rv=_startBroker(o, xo);
+      if (rv<0) {
+	DBG_INFO(NULL, "here (%d)", rv);
+	return rv;
+      }
     }
+
+    if (xo->flags & AQHOMED_FLAGS_START_MQTT) {
+      DBG_INFO(NULL, "Starting MQTT Connection");
+      rv=_startMqtt(o, xo);
+      if (rv<0) {
+	DBG_INFO(NULL, "here (%d)", rv);
+	return rv;
+      }
+    }
+
     return 0;
   }
   else {
@@ -450,23 +561,31 @@ void _readConfig(AQH_OBJECT *o, AQH_NODE_SERVER *xo, GWEN_DB_NODE *dbArgs)
   xo->timeout=GWEN_DB_GetIntValue(dbArgs, "timeout", 0, 0);
   xo->noAttn=GWEN_DB_GetIntValue(dbArgs, "noAttn", 0, 0);
   xo->nodeAddress=GWEN_DB_GetIntValue(dbArgs, "nodeAddress", 0, AQHOMED_DEFAULT_NODEADDR);
+  xo->flags|=GWEN_DB_GetIntValue(dbArgs, "startBroker", 0, 1)?AQHOMED_FLAGS_START_BROKER:0;
+  xo->flags|=GWEN_DB_GetIntValue(dbArgs, "startMqtt", 0, 0)?AQHOMED_FLAGS_START_MQTT:0;
 
   AQH_NodeServer_SetDbFile(o, GWEN_DB_GetCharValue(dbArgs, "dbfile", 0, NULL));
   AQH_NodeServer_SetLogFile(o, GWEN_DB_GetCharValue(dbArgs, "logfile", 0, NULL));
 
   AQH_NodeServer_SetDevicePath(o, GWEN_DB_GetCharValue(dbArgs, "device", 0, AQHOMED_DEFAULT_DEVICE));
-  AQH_NodeServer_SetTpcAddress(o, readCharConfigWithAlt(dbArgs, "tcpAddress", "ConfigFile/nodesAddress", NULL));
-  AQH_NodeServer_SetTcpPort(o, readIntConfigWithAlt(dbArgs, "tcpPort", "ConfigFile/nodesPort", AQHOMED_DEFAULT_IPC_PORT, -1));
+  AQH_NodeServer_SetTpcAddress(o, _readCharConfigWithAlt(dbArgs, "tcpAddress", "ConfigFile/nodesAddress", NULL));
+  AQH_NodeServer_SetTcpPort(o, _readIntConfigWithAlt(dbArgs, "tcpPort", "ConfigFile/nodesPort", AQHOMED_DEFAULT_IPC_PORT, -1));
 
-  AQH_NodeServer_SetBrokerAddress(o, readCharConfigWithAlt(dbArgs, "brokerAddress", "ConfigFile/brokerAddress", "127.0.0.1"));
-  AQH_NodeServer_SetBrokerPort(o, readIntConfigWithAlt(dbArgs, "brokerPort", "ConfigFile/brokerPort", AQHOMED_DEFAULT_BROKER_PORT, -1));
+  AQH_NodeServer_SetBrokerAddress(o, _readCharConfigWithAlt(dbArgs, "brokerAddress", "ConfigFile/brokerAddress", "127.0.0.1"));
+  AQH_NodeServer_SetBrokerPort(o, _readIntConfigWithAlt(dbArgs, "brokerPort", "ConfigFile/brokerPort", AQHOMED_DEFAULT_BROKER_PORT, -1));
   AQH_NodeServer_SetBrokerClientId(o, GWEN_DB_GetCharValue(dbArgs, "brokerClientId", 0, AQHOMED_DEFAULT_BROKER_CLIENTID));
 
+  AQH_NodeServer_SetMqttAddress(o, _readCharConfigWithAlt(dbArgs, "mqttAddress", "ConfigFile/mqttAddr", "127.0.0.1"));
+  AQH_NodeServer_SetMqttPort(o, _readIntConfigWithAlt(dbArgs, "mqttPort", "ConfigFile/mqttPort", 1883, -1));
+  AQH_NodeServer_SetMqttClientId(o, _readCharConfigWithAlt(dbArgs, "mqttClientId", "ConfigFile/mqttClientId", "aqhome-mqtt"));
+  AQH_NodeServer_SetMqttKeepAlive(o, _readIntConfigWithAlt(dbArgs, "mqttKeepAlive", "ConfigFile/mqttKeepAlive", 600, -1));
+  AQH_NodeServer_SetMqttDiscoveryPrefix(o, _readCharConfigWithAlt(dbArgs, "mqttDiscovery", "ConfigFile/mqttDiscovery", "homeassistant"));
+
 }
 
 
 
-const char *readCharConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, const char *defaultValue)
+const char *_readCharConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, const char *defaultValue)
 {
   const char *s;
 
@@ -478,7 +597,7 @@ const char *readCharConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, con
 
 
 
-int readIntConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, int defaultValue, int nonValue)
+int _readIntConfigWithAlt(GWEN_DB_NODE *dbArgs, const char *varName, const char *altVarName, int defaultValue, int nonValue)
 {
   int i;
 
@@ -615,6 +734,132 @@ int _exchangeConnect(AQH_NODE_SERVER *xo, uint32_t flags)
 
 
 
+
+
+
+int _startMqtt(AQH_OBJECT *o, AQH_NODE_SERVER *xo)
+{
+  if (xo->mqttEndpoint) {
+    AQH_Object_Disable(xo->mqttEndpoint);
+    AQH_Object_free(xo->mqttEndpoint);
+    xo->mqttEndpoint=NULL;
+  }
+
+  if (xo->mqttAddress && *(xo->mqttAddress) && xo->mqttPort) {
+    AQH_OBJECT *ep;
+    int fd;
+    int rv;
+
+    fd=AQH_TcpObject_CreateConnectedSocket(xo->mqttAddress, xo->mqttPort);
+    if (fd<0) {
+      DBG_ERROR(NULL, "Error connecting to MQTT server %s:%d", xo->mqttAddress, xo->mqttPort);
+      return GWEN_ERROR_IO;
+    }
+    DBG_INFO(NULL, "Physically connected to MQTT server %s:%d", xo->mqttAddress, xo->mqttPort);
+
+    ep=AQH_MqttClientObject_new(AQH_Object_GetEventLoop(o), fd);
+    assert(ep);
+    AQH_Endpoint_SetServiceName(ep, xo->mqttClientId);
+    AQH_Object_AddLink(ep, AQH_ENDPOINT_SIGNAL_CLOSED, AQH_NODE_SERVER_SLOT_MQTTCLOSED, o);
+    AQH_Object_Enable(ep);
+    xo->mqttEndpoint=ep;
+
+    rv=_exchangeMqttConnect(xo);
+    if (rv!=0) {
+      DBG_ERROR(NULL, "MQTT: Error exchanging CONNECT request (%d)", rv);
+      return (rv<0)?rv:GWEN_ERROR_PERMISSIONS;
+    }
+
+    rv=_exchangeMqttSubscribe(xo);
+    if (rv!=0) {
+      DBG_ERROR(NULL, "MQTT: Error exchanging SUBSCRIBE request (%d)", rv);
+      return (rv<0)?rv:GWEN_ERROR_PERMISSIONS;
+    }
+
+    DBG_NOTICE(NULL, "Connected to MQTT at %s:%d", xo->mqttAddress, xo->mqttPort);
+    return 0;
+  }
+  else {
+    DBG_ERROR(NULL, "No MQTT server settings");
+    return GWEN_ERROR_BAD_DATA;
+  }
+
+  return 0;
+}
+
+
+
+int _exchangeMqttConnect(AQH_NODE_SERVER *xo)
+{
+  AQH_MESSAGE *msg;
+
+  msg=AQH_MqttMessageConnect_new("MQTT", 0x04, 0, xo->mqttKeepAlive, xo->mqttClientId, NULL, NULL);
+  AQH_Endpoint_AddMsgOut(xo->mqttEndpoint, msg);
+
+  msg=AQH_MqttEndpoint_WaitForConnAckMsg(xo->mqttEndpoint, xo->timeoutInSeconds);
+  if (msg) {
+    int resultCode;
+
+    resultCode=AQH_MqttMessageConnAck_GetResultCode(msg);
+    AQH_Message_free(msg);
+    if (resultCode==AQH_MQTTMSG_CONNACK_RESULT_ACCEPTED) {
+      DBG_INFO(AQH_LOGDOMAIN, "Positive CONNACK response");
+      return 0;
+    }
+    else {
+      DBG_ERROR(NULL, "Negative CONNACK response: %d", resultCode);
+      return GWEN_ERROR_GENERIC;
+    }
+  }
+  else {
+    DBG_ERROR(NULL, "No CONNACK message received.");
+    return GWEN_ERROR_GENERIC;
+  }
+}
+
+
+
+int _exchangeMqttSubscribe(AQH_NODE_SERVER *xo)
+{
+  uint16_t pckId;
+  AQH_MESSAGE *msg;
+
+  pckId=AQH_Endpoint_GetNextMessageId(xo->mqttEndpoint);
+  msg=AQH_MqttMessageSubscribe_new(0, pckId, "#", 0);
+  AQH_Endpoint_AddMsgOut(xo->mqttEndpoint, msg);
+
+  msg=AQH_MqttEndpoint_WaitForMsg(xo->mqttEndpoint, AQH_MQTTMSG_MSGTYPE_SUBACK, xo->timeoutInSeconds);
+  if (msg) {
+    int resultCode;
+
+    resultCode=AQH_MqttMessageSubAck_GetResultCode(msg);
+    AQH_Message_free(msg);
+    if (resultCode!=128) {
+      DBG_INFO(AQH_LOGDOMAIN, "Positive SUBACK response");
+      return 0;
+    }
+    else {
+      DBG_ERROR(NULL, "Negative SUBACK response: %d", resultCode);
+      return GWEN_ERROR_GENERIC;
+    }
+  }
+  else {
+    DBG_ERROR(NULL, "No SUBACK message received.");
+    return GWEN_ERROR_GENERIC;
+  }
+}
+
+
+
+
+
+
+
+
+
+
+
+
 void _setupDb(AQH_NODE_SERVER *xo)
 {
   if (xo->dbFile) {
@@ -1139,7 +1384,7 @@ void AQH_NodeServer_CheckBrokerConnection(AQH_OBJECT *o)
   AQH_NODE_SERVER *xo;
 
   xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
-  if (xo && xo->dbArgs) {
+  if (xo && xo->dbArgs && (xo->flags & AQHOMED_FLAGS_START_BROKER)) {
 
     if (xo->brokerEndpoint) {
       if (AQH_Object_GetFlags(xo->brokerEndpoint) & AQH_OBJECT_FLAGS_DELETE) {
@@ -1170,6 +1415,106 @@ void AQH_NodeServer_CheckBrokerConnection(AQH_OBJECT *o)
 
 
 
+
+/* xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+ * MQTT management functions
+ * xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+ */
+
+
+void AQH_NodeServer_HandleMqttMsgs(AQH_OBJECT *o)
+{
+  AQH_NODE_SERVER *xo;
+
+  xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+  if (xo && xo->mqttEndpoint) {
+    AQH_MESSAGE *msg;
+  
+    while( (msg=AQH_Endpoint_GetNextMsgIn(xo->mqttEndpoint)) ) {
+      AQH_Message_SetObject(msg, xo->mqttEndpoint);
+      _handleMsgFromMqtt(o, xo->mqttEndpoint, msg);
+      AQH_Message_free(msg);
+    }
+  }
+}
+
+
+
+void _handleMsgFromMqtt(AQH_OBJECT *o, AQH_OBJECT *ep, const AQH_MESSAGE *msg)
+{
+  uint8_t code;
+
+  /* exec IPC message */
+  code=AQH_MqttMessage_GetTypeAndFlags(msg);
+  switch(code & 0xf0) {
+  case (AQH_MQTTMSG_MSGTYPE_PUBLISH  & 0xf0): AQH_NodeServer_HandlePublishMsg(o, ep, msg); break;
+  case (AQH_MQTTMSG_MSGTYPE_PINGRESP & 0xf0): _handleMqttMsgPingRsp(); break;
+  default:                            break;
+  }
+}
+
+
+
+void _handleMqttMsgPingRsp(void)
+{
+  DBG_INFO(NULL, "PING response received");
+}
+
+
+
+void AQH_NodeServer_CheckMqttConnection(AQH_OBJECT *o)
+{
+  AQH_NODE_SERVER *xo;
+
+  xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+  if (xo && (xo->flags & AQHOMED_FLAGS_START_MQTT)) {
+    if (xo->mqttEndpoint) {
+      if (AQH_Object_GetFlags(xo->mqttEndpoint) & AQH_OBJECT_FLAGS_DELETE) {
+        DBG_INFO(NULL, "Deleting mqtt connection");
+        AQH_Object_Disable(xo->mqttEndpoint);
+        AQH_Object_free(xo->mqttEndpoint);
+        xo->mqttEndpoint=NULL;
+      }
+    }
+
+    if (xo->mqttEndpoint==NULL) {
+      time_t now;
+
+      now=time(NULL);
+      if (_diffInSeconds(now, xo->timestampMqttDown)>AQH_NODE_SERVER_MQTT_RESTARTTIME) {
+        int rv;
+
+        DBG_INFO(NULL, "Restarting MQTT connection");
+        rv=_startMqtt(o, xo);
+        if (rv<0) {
+          DBG_ERROR(NULL, "here (%d)", rv);
+        }
+      }
+    }
+  }
+}
+
+
+
+int AQH_NodeServer_SendPing(AQH_OBJECT *o)
+{
+  AQH_NODE_SERVER *xo;
+
+  xo=GWEN_INHERIT_GETDATA(AQH_OBJECT, AQH_NODE_SERVER, o);
+  if (xo && xo->mqttEndpoint) {
+    AQH_MESSAGE *msgOut;
+
+    DBG_INFO(NULL, "Sending PING");
+    msgOut=AQH_MqttMessage_new(AQH_MQTTMSG_MSGTYPE_PINGREQ, 0, NULL);
+    AQH_Endpoint_AddMsgOut(xo->mqttEndpoint, msgOut);
+    return 0;
+  }
+  return GWEN_ERROR_INVALID;
+}
+
+
+
+
 /* xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  * request management functions
  * xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
@@ -1231,6 +1576,7 @@ int _handleSignal(AQH_OBJECT *o, uint32_t slotId, AQH_OBJECT *senderObject, GWEN
     case AQH_NODE_SERVER_SLOT_CLIENTCLOSED: return _handleIpcClientDown(senderObject);
     case AQH_NODE_SERVER_SLOT_BROKERCLOSED: return _handleBrokerDown(xo);
     case AQH_NODE_SERVER_SLOT_TTYCLOSED:    return _handleTtyDown(xo);
+    case AQH_NODE_SERVER_SLOT_MQTTCLOSED:   return _handleMqttDown(xo);
     default:
       break;
     }
@@ -1284,6 +1630,18 @@ int _handleTtyDown(AQH_NODE_SERVER *xo)
 
 
 
+int _handleMqttDown(AQH_NODE_SERVER *xo)
+{
+  if (xo->mqttEndpoint) {
+    DBG_WARN(NULL, "MQTT connection down");
+    AQH_Object_AddFlags(xo->mqttEndpoint, AQH_OBJECT_FLAGS_DELETE);
+    xo->timestampMqttDown=time(NULL);
+  }
+  return 1;
+}
+
+
+
 
 
 /* xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
@@ -1411,10 +1769,16 @@ int _readArgs(int argc, char **argv, GWEN_DB_NODE *dbArgs)
     { A_ARG, A_CHAR, "brokerAddress",  0,  1,  "ba", "brokerddress",   I18S("Broker address [127.0.0.1]"), NULL},
     { A_ARG, A_INT,  "brokerPort",     0,  1,  "bp", "brokerport",     I18S("Broker port [1899]"), NULL},
     { A_ARG, A_CHAR, "brokerClientId", 0,  1,  NULL, "brokerclientid", I18S("Broker client id"), NULL},
+    { A_ARG, A_CHAR, "mqttAddress",    0,  1,  "ma", "mqttaddress",    I18S("Address of MQTT server"), NULL},
+    { A_ARG, A_INT,  "mqttPort",       0,  1,  "mp", "mqttport",       I18S("Port of MQTT server (default: 1883)"), NULL},
+    { A_ARG, A_CHAR, "mqttClientId",   0,  1,  NULL, "mqttclientid",   I18S("MQTT client id"), NULL},
+    { A_ARG, A_INT,  "mqttKeepAlive",  0,  1,  "P",  "mqttkeepalive",  I18S("MQTT keep-alive time"), NULL},
     { A_ARG, A_CHAR, "dbfile",         0,  1,  "db", "dbfile",         I18S("DB file to read/write node database"), NULL},
     { A_ARG, A_CHAR, "pidfile",        0,  1,  "p",  "pidfile",        I18S("PID file"), NULL},
     { A_ARG, A_INT,  "timeout",        0,  1,  "T",  NULL,             I18S("timeout in seconds [0]"), NULL},
     { 0,     A_INT,  "noAttn",         0,  1,  "N",  "noattn",         I18S("Don't use ATTN line (for T03 or newer)"), NULL},
+    { 0,     A_INT,  "startMqtt",      0,  1,  "M",  "startMqtt",      I18S("Start MQTT connection"), NULL},
+    { 0,     A_INT,  "startBroker",    0,  1,  "M",  "startBroker",    I18S("Start AqHome Broker connection"), NULL},
     { A_END, A_INT,  "help",           0,  0,  "h",  "help",           I18S("Show this help screen"), NULL}
   };
 
diff --git a/apps/aqhome-nodes/server.h b/apps/aqhome-nodes/server.h
index a59b7f9..523132d 100644
--- a/apps/aqhome-nodes/server.h
+++ b/apps/aqhome-nodes/server.h
@@ -57,6 +57,9 @@ void AQH_NodeServer_HandleClientMsgs(AQH_OBJECT *o);
 void AQH_NodeServer_HandleBrokerMsgs(AQH_OBJECT *o);
 void AQH_NodeServer_CheckBrokerConnection(AQH_OBJECT *o);
 void AQH_NodeServer_CheckTtyConnection(AQH_OBJECT *o);
+void AQH_NodeServer_HandleMqttMsgs(AQH_OBJECT *o);
+void AQH_NodeServer_CheckMqttConnection(AQH_OBJECT *o);
+int AQH_NodeServer_SendPing(AQH_OBJECT *o);
 
 
 /* getters and setters */
@@ -72,6 +75,12 @@ void AQH_NodeServer_SetBrokerAddress(AQH_OBJECT *o, const char *s);
 void AQH_NodeServer_SetBrokerPort(AQH_OBJECT *o, int i);
 void AQH_NodeServer_SetBrokerClientId(AQH_OBJECT *o, const char *s);
 
+void AQH_NodeServer_SetMqttAddress(AQH_OBJECT *o, const char *s);
+void AQH_NodeServer_SetMqttPort(AQH_OBJECT *o, int i);
+void AQH_NodeServer_SetMqttClientId(AQH_OBJECT *o, const char *s);
+void AQH_NodeServer_SetMqttKeepAlive(AQH_OBJECT *o, int i);
+void AQH_NodeServer_SetMqttDiscoveryPrefix(AQH_OBJECT *o, const char *s);
+
 
 /* device management */
 const AQHNODE_DEVICE_LIST *AQH_NodeServer_GetDeviceDefList(const AQH_OBJECT *o);
diff --git a/apps/aqhome-nodes/server_p.h b/apps/aqhome-nodes/server_p.h
index 8b65a9a..280cc35 100644
--- a/apps/aqhome-nodes/server_p.h
+++ b/apps/aqhome-nodes/server_p.h
@@ -27,12 +27,16 @@
 #define AQHOMED_DEFAULT_BROKER_PORT       1899
 #define AQHOMED_DEFAULT_BROKER_CLIENTID   "nodes"
 
+#define AQHOMED_FLAGS_START_BROKER  0x00000001
+#define AQHOMED_FLAGS_START_MQTT    0x00000002
+
 
 
 typedef struct AQH_NODE_SERVER AQH_NODE_SERVER;
 struct AQH_NODE_SERVER {
   AQH_OBJECT *ttyEndpoint;
   AQH_OBJECT *brokerEndpoint;
+  AQH_OBJECT *mqttEndpoint;
 
   AQH_OBJECT *ipcEndpoint;
   AQH_OBJECT_LIST *ipcClientList;
@@ -44,6 +48,8 @@ struct AQH_NODE_SERVER {
 
   GWEN_DB_NODE *dbArgs;
 
+  uint32_t flags;
+
   char *dbFile;
   char *logFile;
   char *pidFile;
@@ -58,8 +64,15 @@ struct AQH_NODE_SERVER {
   int brokerPort;
   char *brokerClientId;
 
+  char *mqttAddress;
+  int mqttPort;
+  char *mqttClientId;
+  char *mqttDiscoveryPrefix;
+  int mqttKeepAlive;
+
   time_t timestampTtyDown;
   time_t timestampBrokerDown;
+  time_t timestampMqttDown;
 
   int nodeAddress;