diff --git a/MQTTSNGateway/GatewayTester/src/LGwProxy.h b/MQTTSNGateway/GatewayTester/src/LGwProxy.h
index 41d6078..2c45001 100644
--- a/MQTTSNGateway/GatewayTester/src/LGwProxy.h
+++ b/MQTTSNGateway/GatewayTester/src/LGwProxy.h
@@ -19,6 +19,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <time.h>
 
 #include "LMqttsnClientApp.h"
 #include "LNetworkUdp.h"
@@ -92,11 +93,11 @@ private:
 	uint8_t     _gwId;
 	uint16_t    _tkeepAlive;
 	uint32_t    _tAdv;
-	uint32_t    _sendUTC;
+	time_t      _sendUTC;
 	int         _retryCount;
 	int         _connectRetry;
 	uint8_t     _status;
-	uint32_t    _pingSendUTC;
+	time_t    _pingSendUTC;
 	uint8_t     _pingRetryCount;
 	uint8_t     _pingStatus;
 	LRegisterManager _regMgr;
diff --git a/MQTTSNGateway/GatewayTester/src/LPublishManager.h b/MQTTSNGateway/GatewayTester/src/LPublishManager.h
index b6015ee..231f601 100644
--- a/MQTTSNGateway/GatewayTester/src/LPublishManager.h
+++ b/MQTTSNGateway/GatewayTester/src/LPublishManager.h
@@ -16,6 +16,7 @@
 #ifndef PUBLISHMANAGER_H_
 #define PUBLISHMANAGER_H_
 
+#include <time.h>
 #include "LMqttsnClientApp.h"
 #include "LTimer.h"
 #include "LTopicTable.h"
@@ -42,7 +43,7 @@ typedef struct PubElement{
     const char* topicName;
     uint8_t*  payload;
     uint16_t  payloadlen;
-    uint32_t  sendUTC;
+    time_t    sendUTC;
     int       (*callback)(void);
     int       retryCount;
     int       taskIndex;
diff --git a/MQTTSNGateway/GatewayTester/src/LRegisterManager.h b/MQTTSNGateway/GatewayTester/src/LRegisterManager.h
index d58c041..5e2234a 100644
--- a/MQTTSNGateway/GatewayTester/src/LRegisterManager.h
+++ b/MQTTSNGateway/GatewayTester/src/LRegisterManager.h
@@ -17,6 +17,7 @@
 #ifndef REGISTERQUE_H_
 #define REGISTERQUE_H_
 
+#include <time.h>
 #include "LMqttsnClientApp.h"
 
 namespace linuxAsyncClient {
@@ -27,7 +28,7 @@ typedef struct RegQueElement{
 	const char* topicName;
 	uint16_t msgId;
     int      retryCount;
-    uint32_t sendUTC;
+    time_t   sendUTC;
 	RegQueElement* prev;
 	RegQueElement* next;
 }RegQueElement;
diff --git a/MQTTSNGateway/GatewayTester/src/LSubscribeManager.h b/MQTTSNGateway/GatewayTester/src/LSubscribeManager.h
index 8bb35a3..be6eae3 100644
--- a/MQTTSNGateway/GatewayTester/src/LSubscribeManager.h
+++ b/MQTTSNGateway/GatewayTester/src/LSubscribeManager.h
@@ -19,6 +19,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <time.h>
 
 #include "LMqttsnClientApp.h"
 #include "LRegisterManager.h"
@@ -33,7 +34,7 @@ typedef struct SubElement{
     TopicCallback callback;
     const char* topicName;
     uint16_t  msgId;
-    uint32_t  sendUTC;
+    time_t    sendUTC;
     uint16_t  topicId;
     uint8_t   msgType;
     uint8_t   topicType;
diff --git a/MQTTSNGateway/GatewayTester/src/LTaskManager.h b/MQTTSNGateway/GatewayTester/src/LTaskManager.h
index d65f6a6..3303c92 100644
--- a/MQTTSNGateway/GatewayTester/src/LTaskManager.h
+++ b/MQTTSNGateway/GatewayTester/src/LTaskManager.h
@@ -19,6 +19,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <time.h>
 
 #include "LMqttsnClientApp.h"
 #include "LTimer.h"
@@ -29,8 +30,8 @@ namespace linuxAsyncClient {
 
 struct TaskList{
     void     (*callback)(void);
-	uint32_t interval;
-    uint32_t prevTime;
+	time_t   interval;
+    time_t    prevTime;
     uint8_t  count;
 };
 
diff --git a/MQTTSNGateway/GatewayTester/src/LTimer.cpp b/MQTTSNGateway/GatewayTester/src/LTimer.cpp
index 781693b..346f181 100644
--- a/MQTTSNGateway/GatewayTester/src/LTimer.cpp
+++ b/MQTTSNGateway/GatewayTester/src/LTimer.cpp
@@ -16,10 +16,12 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <sys/time.h>
+
 #include "LMqttsnClientApp.h"
 #include "LTimer.h"
 
-using namespace std;
+//using namespace std;
 using namespace linuxAsyncClient;
 
 /*=====================================
diff --git a/MQTTSNGateway/GatewayTester/src/LTimer.h b/MQTTSNGateway/GatewayTester/src/LTimer.h
index cb44cc0..9c666cf 100644
--- a/MQTTSNGateway/GatewayTester/src/LTimer.h
+++ b/MQTTSNGateway/GatewayTester/src/LTimer.h
@@ -17,7 +17,7 @@
 #ifndef TIMER_H_
 #define TIMER_H_
 
-#include <sys/time.h>
+#include <time.h>
 
 #include "LMqttsnClientApp.h"
 
diff --git a/MQTTSNGateway/Makefile b/MQTTSNGateway/Makefile
index 0591067..fa5ad97 100644
--- a/MQTTSNGateway/Makefile
+++ b/MQTTSNGateway/Makefile
@@ -62,14 +62,16 @@ $(SUBDIR)/MQTTSNUnsubscribeServer.c
 CXX := g++
 CPPFLAGS += 
 
-INCLUDES += -I$(SRCDIR) \
+INCLUDE :=
+INCLUDES += $(INCLUDE) -I$(SRCDIR) \
 -I$(SRCDIR)/$(OS) \
 -I$(SRCDIR)/$(OS)/$(SENSORNET) \
 -I$(SUBDIR) \
 -I$(SRCDIR)/$(TEST)
 
 DEFS :=
-LIBS += -L/usr/local/lib
+LIB :=
+LIBS += $(LIB) -L/usr/local/lib
 LDFLAGS := 
 CXXFLAGS := -Wall -O3 -std=c++11
 LDADD := -lpthread -lssl -lcrypto -lrt
diff --git a/MQTTSNGateway/src/MQTTGWPacket.cpp b/MQTTSNGateway/src/MQTTGWPacket.cpp
index 8bba53f..55532fc 100644
--- a/MQTTSNGateway/src/MQTTGWPacket.cpp
+++ b/MQTTSNGateway/src/MQTTGWPacket.cpp
@@ -500,6 +500,7 @@ char* MQTTGWPacket::getMsgId(char* pbuf)
 	{
 	case PUBLISH:
 		Publish pub;
+		pub.msgId = 0;
 		getPUBLISH(&pub);
 		if ( _header.bits.dup )
 		{
@@ -533,8 +534,8 @@ char* MQTTGWPacket::print(char* pbuf)
 	char* ptr = pbuf;
 	char** pptr = &pbuf;
 	int len = getPacketData(packetData);
-
-	for (int i = 0; i < len; i++)
+	int size = len > SIZE_OF_LOG_PACKET ? SIZE_OF_LOG_PACKET : len;
+	for (int i = 0; i < size; i++)
 	{
 		sprintf(*pptr, " %02X", packetData[i]);
 		*pptr += 3;
diff --git a/MQTTSNGateway/src/MQTTGWPublishHandler.cpp b/MQTTSNGateway/src/MQTTGWPublishHandler.cpp
index cfd6772..c6ebcef 100644
--- a/MQTTSNGateway/src/MQTTGWPublishHandler.cpp
+++ b/MQTTSNGateway/src/MQTTGWPublishHandler.cpp
@@ -122,7 +122,7 @@ void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
 
 			if (id > 0)
 			{
-				/* create REGACK */
+				/* create REGISTER */
 				MQTTSNPacket* regPacket = new MQTTSNPacket();
 
 				MQTTSNString topicName;
@@ -143,6 +143,7 @@ void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
 						(uint8_t) pub.header.bits.retain, (uint16_t) pub.msgId, topicId, (uint8_t*) pub.payload,
 						pub.payloadlen);
 				client->getWaitREGACKPacketList()->setPacket(snPacket, regackMsgId);
+				return;
 			}
 			else
 			{
diff --git a/MQTTSNGateway/src/MQTTSNGWClient.cpp b/MQTTSNGateway/src/MQTTSNGWClient.cpp
index d31e3f0..9a8a043 100644
--- a/MQTTSNGateway/src/MQTTSNGWClient.cpp
+++ b/MQTTSNGateway/src/MQTTSNGWClient.cpp
@@ -227,6 +227,14 @@ Client* ClientList::createClient(SensorNetAddress* addr, MQTTSNString* clientId,
 	{
 		client->setClientId(*clientId);
 	}
+	else
+	{
+		MQTTSNString  dummyId;
+		dummyId.cstring = strdup("");
+		dummyId.lenstring.len = 0;
+		client->setClientId(dummyId);
+		 free(dummyId.cstring);
+	}
 
 	/* add the list */
 	if ( _firstClient == 0 )
diff --git a/MQTTSNGateway/src/MQTTSNGWPacketHandleTask.cpp b/MQTTSNGateway/src/MQTTSNGWPacketHandleTask.cpp
index 5149a85..43cdd24 100644
--- a/MQTTSNGateway/src/MQTTSNGWPacketHandleTask.cpp
+++ b/MQTTSNGateway/src/MQTTSNGWPacketHandleTask.cpp
@@ -167,7 +167,7 @@ void PacketHandleTask::run()
 				_mqttsnPublish->handleRegister(client, snPacket);
 				break;
 			case MQTTSN_REGACK:
-				// NOP
+			    _mqttsnPublish->handleRegAck(client, snPacket);
 				break;
 			case MQTTSN_SUBSCRIBE:
 				_mqttsnSubscribe->handleSubscribe(client, snPacket);
diff --git a/MQTTSNGateway/src/MQTTSNGWPublishHandler.cpp b/MQTTSNGateway/src/MQTTSNGWPublishHandler.cpp
index 52dff3e..ea7f9b0 100644
--- a/MQTTSNGateway/src/MQTTSNGWPublishHandler.cpp
+++ b/MQTTSNGateway/src/MQTTSNGWPublishHandler.cpp
@@ -245,5 +245,28 @@ void MQTTSNPublishHandler::handleRegister(Client* client, MQTTSNPacket* packet)
 		ev->setClientSendEvent(client, regAck);
 		_gateway->getClientSendQue()->post(ev);
 	}
+}
+
+void MQTTSNPublishHandler::handleRegAck( Client* client, MQTTSNPacket* packet)
+{
+    uint16_t id;
+    uint16_t msgId;
+    uint8_t rc;
+    if ( client->isActive() || client->isAwake())
+    {
+        if ( packet->getREGACK(&id, &msgId, &rc) == 0 )
+        {
+            return;
+        }
+
+        MQTTSNPacket* regAck = client->getWaitREGACKPacketList()->getPacket(msgId);
+        if ( regAck != 0 )
+        {
+            client->getWaitREGACKPacketList()->erase(msgId);
+            Event* ev = new Event();
+            ev->setClientSendEvent(client, regAck);
+            _gateway->getClientSendQue()->post(ev);
+        }
+    }
 
 }
diff --git a/MQTTSNGateway/src/MQTTSNGWPublishHandler.h b/MQTTSNGateway/src/MQTTSNGWPublishHandler.h
index 7213cbe..f7fc2d8 100644
--- a/MQTTSNGateway/src/MQTTSNGWPublishHandler.h
+++ b/MQTTSNGateway/src/MQTTSNGWPublishHandler.h
@@ -31,7 +31,7 @@ public:
 	void handlePuback(Client* client, MQTTSNPacket* packet);
 	void handleAck(Client* client, MQTTSNPacket* packet, uint8_t packetType);
 	void handleRegister(Client* client, MQTTSNPacket* packet);
-
+	void handleRegAck( Client* client, MQTTSNPacket* packet);
 private:
 	Gateway* _gateway;
 };