BugFix of #76 and #77

1.Return CONNACK instead of the broker when the gateway receives CONNECT
while the client is Sleep or Awake mode.

2.Define the max size of a que for PUBLISH while the client state is
Asleep mode.  Despose packets when the que is full of packets.

3.Return PUBACK or PUBREL to the broker when the client is Asleep or
Awake.


Signed-off-by: tomoaki <tomoaki@tomy-tech.com>



Signed-off-by: tomoaki <tomoaki@tomy-tech.com>

MQTTSNGateway/GatewayTester/samples/mainTest.cpp

@@ -44,24 +44,24 @@ extern int run(void);
  *
  */
 /*------------------------------------------------------
- *    UDP Configuration
+ *    UDP Configuration    (theNetcon)
  *------------------------------------------------------*/
 UDPCONF  = {
-	"GatewayTester",     // ClientId
+	"GatewayTestClient", // ClientId
 	{225,1,1,1},         // Multicast group IP
 	1883,                // Multicast group Port
 	20001,               // Local PortNo
 };
 
 /*------------------------------------------------------
- *    Client Configuration
+ *    Client Configuration  (theMqcon)
  *------------------------------------------------------*/
 MQTTSNCONF = {
-	300,            //KeepAlive (seconds)
+	60,            //KeepAlive [seconds]
 	true,          //Clean session
-	0,              //Sleep duration in msecs
-	"willTopic",    //WillTopic
-	"willMessage",  //WillMessage
+	300,           //Sleep duration [seconds]
+	"",            //WillTopic
+	"",            //WillMessage
     0,             //WillQos
     false          //WillRetain
 };
@@ -162,6 +162,11 @@ void disconnect(void)
 	DISCONNECT(0);
 }
 
+void asleep(void)
+{
+	DISCONNECT(theMqcon.sleepDuration);
+}
+
 /*------------------------------------------------------
  *    A List of Test functions
  *------------------------------------------------------*/
@@ -175,7 +180,9 @@ TEST_LIST = {// e.g. TEST( Label, Test),
 			 TEST("Step6:Publish topic2",     publishTopic2),
 			 TEST("Step7:subscribe again",    subscribechangeCallback),
 			 TEST("Step8:Publish topic2",     publishTopic2),
-			 TEST("Step9:Disconnect",         disconnect),
+			 TEST("Step9:Sleep     ",         asleep),
+			 TEST("Step10:Publish topic1",    publishTopic1),
+			 TEST("Step11:Disconnect",        disconnect),
 			 END_OF_TEST_LIST
 			};
 

MQTTSNGateway/GatewayTester/src/LGwProxy.cpp

@@ -55,6 +55,8 @@ LGwProxy::LGwProxy(){
 	_cleanSession = 0;
 	_pingStatus = 0;
 	_connectRetry = MQTTSN_RETRY_COUNT;
+	_tSleep = 0;
+	_tWake = 0;
 }
 
 LGwProxy::~LGwProxy(){
@@ -91,7 +93,7 @@ void LGwProxy::connect(){
 			strcpy(pos,_willTopic);        // WILLTOPIC
 			_status = GW_WAIT_WILLMSGREQ;
 			writeGwMsg();
-		}else if (_status == GW_CONNECTING || _status == GW_DISCONNECTED){
+		}else if (_status == GW_CONNECTING || _status == GW_DISCONNECTED || _status == GW_SLEPT ){
 			uint8_t clientIdLen = uint8_t(strlen(_clientId) > 23 ? 23 : strlen(_clientId));
 			*pos++ = 6 + clientIdLen;
 			*pos++ = MQTTSN_TYPE_CONNECT;
@@ -105,7 +107,7 @@ void LGwProxy::connect(){
 			strncpy(pos, _clientId, clientIdLen);
 			_msg[ 6 + clientIdLen] = 0;
 			_status = GW_WAIT_CONNACK;
-			if (_willMsg && _willTopic){
+			if ( _willMsg && _willTopic &&  _status != GW_SLEPT ){
 				if (strlen(_willMsg) && strlen(_willTopic)){
 					_msg[2] = _msg[2] | MQTTSN_FLAG_WILL;   // CONNECT
 					_status = GW_WAIT_WILLTOPICREQ;
@@ -163,10 +165,14 @@ int LGwProxy::getConnectResponce(void){
 		if (_mqttsnMsg[1] == MQTTSN_RC_ACCEPTED){
 			_status = GW_CONNECTED;
 			_connectRetry = MQTTSN_RETRY_COUNT;
-			_keepAliveTimer.start(_tkeepAlive * 1000);
-			_topicTbl.clearTopic();
+			setPingReqTimer();
+			if ( _tSleep ){
+				_tSleep = 0;
+			}else{
 				DISPLAY("\033[0m\033[0;32m\n\n Connected to the Broker\033[0m\033[0;37m\n\n");
+				_topicTbl.clearTopic();
 				theClient->onConnect();  // SUBSCRIBEs are conducted
+			}
 		}else{
 			_status = GW_CONNECTING;
 		}
@@ -182,16 +188,18 @@ void LGwProxy::reconnect(void){
 
 void LGwProxy::disconnect(uint16_t secs){
     _tSleep = secs;
-    _status = GW_DISCONNECTING;
+    _tWake = 0;
 
 	_msg[1] = MQTTSN_TYPE_DISCONNECT;
 
 	if (secs){
 		_msg[0] = 4;
 		setUint16((uint8_t*) _msg + 2, secs);
+		_status = GW_SLEEPING;
 	}else{
 		_msg[0] = 2;
 		_keepAliveTimer.stop();
+		_status = GW_DISCONNECTING;
 	}
 
 	_retryCount = MQTTSN_RETRY_COUNT;
@@ -223,9 +231,13 @@ int LGwProxy::getDisconnectResponce(void){
 		}
 		return 0;
 	}else if (_mqttsnMsg[0] == MQTTSN_TYPE_DISCONNECT){
-		if (_tSleep){
-			_status = GW_SLEEPING;
-			_keepAliveTimer.start(_tSleep);
+		if (_status == GW_SLEEPING ){
+			_status = GW_SLEPT;
+			uint32_t remain = _keepAliveTimer.getRemain();
+			theClient->setSleepMode(remain);
+
+			/* Wake up and starts from this point. */
+
 		}else{
 			_status = GW_DISCONNECTED;
 		}
@@ -279,7 +291,18 @@ int LGwProxy::getMessage(void){
     }else if (_mqttsnMsg[0] == MQTTSN_TYPE_PINGRESP){
         if (_pingStatus == GW_WAIT_PINGRESP){
             _pingStatus = 0;
-            resetPingReqTimer();
+            setPingReqTimer();
+
+            if ( _tSleep > 0 ){
+            	_tWake += _tkeepAlive;
+            	if ( _tWake < _tSleep ){
+            		theClient->setSleepMode(_tkeepAlive * 1000UL);
+            	}else{
+            		DISPLAY("\033[0m\033[0;32m\n\n Get back to ACTIVE.\033[0m\033[0;37m\n\n");
+            		_tWake = 0;
+            		connect();
+            	}
+            }
         }
     }else if (_mqttsnMsg[0] == MQTTSN_TYPE_DISCONNECT){
     	_status = GW_LOST;
@@ -408,7 +431,7 @@ void LGwProxy::checkPingReq(void){
 	msg[0] = 0x02;
 	msg[1] = MQTTSN_TYPE_PINGREQ;
     
-	if (_status == GW_CONNECTED && _keepAliveTimer.isTimeUp() && _pingStatus != GW_WAIT_PINGRESP){
+	if ( (_status == GW_CONNECTED || _status == GW_SLEPT) && isPingReqRequired() && _pingStatus != GW_WAIT_PINGRESP){
 		_pingStatus = GW_WAIT_PINGRESP;
         _pingRetryCount = MQTTSN_RETRY_COUNT;
 
@@ -449,8 +472,12 @@ LRegisterManager* LGwProxy::getRegisterManager(void){
 	return &_regMgr;
 }
 
-void LGwProxy::resetPingReqTimer(void){
-	_keepAliveTimer.start(_tkeepAlive * 1000);
+bool LGwProxy::isPingReqRequired(void){
+	return _keepAliveTimer.isTimeUp(_tkeepAlive * 1000UL);
+}
+
+void LGwProxy::setPingReqTimer(void){
+	_keepAliveTimer.start(_tkeepAlive * 1000UL);
 }
 
 const char* LGwProxy::getClientId(void) {

MQTTSNGateway/GatewayTester/src/LGwProxy.h

@@ -66,7 +66,7 @@ public:
 	void     setAdvertiseDuration(uint16_t duration);
 	void     reconnect(void);
 	int      writeMsg(const uint8_t* msg);
-	void     resetPingReqTimer(void);
+	void     setPingReqTimer(void);
 	uint16_t getNextMsgId();
 	LTopicTable* getTopicTable(void);
 	LRegisterManager* getRegisterManager(void);
@@ -78,6 +78,7 @@ private:
 	void     checkAdvertise(void);
 	int      getConnectResponce(void);
 	int      getDisconnectResponce(void);
+	bool     isPingReqRequired(void);
 
 	LNetwork     _network;
 	uint8_t*    _mqttsnMsg;
@@ -103,6 +104,7 @@ private:
 	LTimer       _gwAliveTimer;
 	LTimer       _keepAliveTimer;
 	uint16_t    _tSleep;
+	uint16_t    _tWake;
 	char        _msg[MQTTSN_MAX_MSG_LENGTH + 1];
 };
 

MQTTSNGateway/GatewayTester/src/LMqttsnClient.cpp

@@ -198,12 +198,17 @@ void LMqttsnClient::run()
 {
 	_gwProxy.connect();
 	_taskMgr.run();
-	sleep();
+}
+
+void LMqttsnClient::setSleepMode(uint32_t duration)
+{
+	// ToDo:  set WDT and sleep mode
+	DISPLAY("\033[0m\033[0;32m\n\n Get into SLEEP mode %u [msec].\033[0m\033[0;37m\n\n", duration);
 }
 
 void LMqttsnClient::sleep(void)
 {
-
+	disconnect(_sleepDuration);
 }
 
 void LMqttsnClient::setSleepDuration(uint32_t duration)

MQTTSNGateway/GatewayTester/src/LMqttsnClient.h

@@ -59,6 +59,7 @@ public:
     void run(void);
     void addTask(bool test);
     void setSleepDuration(uint32_t duration);
+    void setSleepMode(uint32_t duration);
     void sleep(void);
 	const char* getClientId(void);
     LGwProxy*          getGwProxy(void);

MQTTSNGateway/GatewayTester/src/LNetworkUdp.cpp

@@ -23,7 +23,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
-#include <errno.h>
 #include <termios.h>
 
 #include "LNetworkUdp.h"

MQTTSNGateway/GatewayTester/src/LPublishManager.cpp

@@ -150,7 +150,7 @@ void LPublishManager::sendPublish(PubElement* elm)
 	memcpy(msg + org + 7, elm->payload, elm->payloadlen);
 
 	theClient->getGwProxy()->writeMsg(msg);
-	theClient->getGwProxy()->resetPingReqTimer();
+	theClient->getGwProxy()->setPingReqTimer();
 	if ((elm->flag & 0x60) == MQTTSN_FLAG_QOS_0)
 	{
 		DISPLAY("\033[0m\033[0;32m Topic \"%s\" was Published. \033[0m\033[0;37m\n\n", elm->topicName);

MQTTSNGateway/GatewayTester/src/LScreen.cpp

@@ -23,7 +23,6 @@
 #include <termios.h>
 #include <unistd.h>
 #include <fcntl.h>
-#include <errno.h>
 #include <stdarg.h>
 
 #include "LScreen.h"

MQTTSNGateway/GatewayTester/src/LSubscribeManager.cpp

@@ -142,7 +142,7 @@ void LSubscribeManager::send(SubElement* elm)
 
 	theClient->getGwProxy()->connect();
 	theClient->getGwProxy()->writeMsg(msg);
-	theClient->getGwProxy()->resetPingReqTimer();
+	theClient->getGwProxy()->setPingReqTimer();
 	elm->sendUTC = time(NULL);
 	elm->retryCount--;
 }

MQTTSNGateway/GatewayTester/src/LTimer.cpp

@@ -16,7 +16,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-
 #include "LMqttsnClientApp.h"
 #include "LTimer.h"
 
@@ -63,3 +62,17 @@ void LTimer::stop(){
   _millis = 0;
 }
 
+uint32_t LTimer::getRemain(void)
+{
+    struct timeval curTime;
+    uint32_t secs, usecs;
+    if (_millis <= 0){
+        return 0;
+    }else{
+        gettimeofday(&curTime, 0);
+        secs  = (curTime.tv_sec  - _startTime.tv_sec) * 1000;
+        usecs = (curTime.tv_usec - _startTime.tv_usec) / 1000.0;
+        secs = _millis - (secs + usecs);
+        return secs;
+    }
+}

MQTTSNGateway/GatewayTester/src/LTimer.h

@@ -35,6 +35,7 @@ public:
     bool isTimeUp(void);
     void stop(void);
     void changeUTC(void){};
+    uint32_t getRemain(void);
     static void setUnixTime(uint32_t utc){};
 private:
     struct timeval _startTime;

MQTTSNGateway/src/MQTTGWConnectionHandler.cpp

@@ -76,14 +76,6 @@ void MQTTGWConnectionHandler::handleConnack(Client* client, MQTTGWPacket* packet
 	ev1->setClientSendEvent(client, snPacket);
 	client->connackSended(rc);  // update the client's status
 	_gateway->getClientSendQue()->post(ev1);
-
-	MQTTSNPacket* sleepPacket = 0;
-	while ( (sleepPacket = client->getClientSleepPacket()) )
-	{
-		Event* ev1 = new Event();
-		ev1->setClientSendEvent(client, sleepPacket);
-		_gateway->getClientSendQue()->post(ev1);
-	}
 }
 
 void MQTTGWConnectionHandler::handlePingresp(Client* client, MQTTGWPacket* packet)

MQTTSNGateway/src/MQTTGWPacket.cpp

@@ -543,3 +543,20 @@ char* MQTTGWPacket::print(char* pbuf)
 	return ptr;
 }
 
+MQTTGWPacket& MQTTGWPacket::operator =(MQTTGWPacket& packet)
+{
+	clearData();
+	this->_header.byte = packet._header.byte;
+	this->_remainingLength = packet._remainingLength;
+	_data = (unsigned char*)calloc(_remainingLength, 1);
+	if (_data)
+	{
+		memcpy(this->_data, packet._data, _remainingLength);
+	}
+	else
+	{
+		clearData();
+	}
+	return *this;
+}
+

MQTTSNGateway/src/MQTTGWPacket.h

@@ -205,6 +205,7 @@ public:
 	int setUNSUBSCRIBE(const char* topics, unsigned short msgid);
 	char* getMsgId(char* buf);
 	char* print(char* buf);
+	MQTTGWPacket& operator =(MQTTGWPacket& packet);
 
 private:
 	void  clearData(void);

MQTTSNGateway/src/MQTTGWPublishHandler.cpp

@@ -36,9 +36,39 @@ MQTTGWPublishHandler::~MQTTGWPublishHandler()
 
 void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
 {
-	if ( !client->isActive() && !client->isSleep() )
+	if ( !client->isActive() && !client->isSleep() && !client->isAwake())
 	{
-		WRITELOG("     The client is neither active nor sleep %s\n", client->getStatus());
+		WRITELOG("%s     The client is neither active nor sleep %s%s\n", ERRMSG_HEADER, client->getStatus(), ERRMSG_FOOTER);
+		return;
+	}
+
+	/* client is sleeping. save PUBLISH */
+	if ( client->isSleep() )
+	{
+		Publish pub;
+		packet->getPUBLISH(&pub);
+
+		WRITELOG(FORMAT_Y_G_G, currentDateTime(), packet->getName(),
+		RIGHTARROW, client->getClientId(), "is sleeping. a message was saved.");
+
+		if (pub.header.bits.qos == 1)
+		{
+			replyACK(client, &pub, PUBACK);
+		}
+		else if ( pub.header.bits.qos == 2)
+		{
+			replyACK(client, &pub, PUBREC);
+		}
+
+		MQTTGWPacket* msg = new MQTTGWPacket();
+		*msg = *packet;
+		if ( msg->getType() == 0 )
+		{
+			WRITELOG("%s MQTTGWPublishHandler::handlePublish can't allocate memories for Packet.%s\n", ERRMSG_HEADER,ERRMSG_FOOTER);
+			delete msg;
+			return;
+		}
+		client->setClientSleepPacket(msg);
 		return;
 	}
 
@@ -102,19 +132,10 @@ void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
 				uint16_t regackMsgId = client->getNextSnMsgId();
 				regPacket->setREGISTER(id, regackMsgId, &topicName);
 
-				if (client->isSleep())
-				{
-					client->setClientSleepPacket(regPacket);
-					WRITELOG(FORMAT_BL_NL, currentDateTime(), regPacket->getName(),
-					RIGHTARROW, client->getClientId(), "is sleeping. REGISTER was saved.");
-				}
-				else if (client->isActive())
-				{
 				/* send REGISTER */
 				Event* evrg = new Event();
 				evrg->setClientSendEvent(client, regPacket);
 				_gateway->getClientSendQue()->post(evrg);
-				}
 
 				/* send PUBLISH */
 				topicId.data.id = id;
@@ -125,47 +146,18 @@ void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
 			}
 			else
 			{
-				WRITELOG("\x1b[0m\x1b[31mMQTTGWPublishHandler Can't create a Topic.\n");
+				WRITELOG("%sMQTTGWPublishHandler Can't create a Topic.%s\n", ERRMSG_HEADER,ERRMSG_FOOTER);
 				delete snPacket;
 				return;
 			}
 		}
 	}
 
-	/* TopicId was acquired. */
-	if (client->isSleep())
-	{
-		/* client is sleeping. save PUBLISH */
-		client->setClientSleepPacket(snPacket);
-		WRITELOG(FORMAT_Y_G_G, currentDateTime(), packet->getName(),
-		RIGHTARROW, client->getClientId(), "is sleeping. a message was saved.");
-		int type = 0;
-		if (pub.header.bits.qos == 1)
-		{
-			type = PUBACK;
-		}
-		else if ( pub.header.bits.qos == 2)
-		{
-			WRITELOG(" While Client is sleeping, QoS2 is not supported.\n");
-			type = PUBREC;
-		}
-		replyACK(client, &pub, type);
-		pub.header.bits.qos = 0;
-		replyACK(client, &pub, PUBACK);
-		pub.msgId = 0;
-		snPacket->setPUBLISH((uint8_t) pub.header.bits.dup, (int) pub.header.bits.qos,
-				(uint8_t) pub.header.bits.retain, (uint16_t) pub.msgId, topicId, (uint8_t*) pub.payload,
-				pub.payloadlen);
-		client->setClientSleepPacket(snPacket);
-	}
-	else if (client->isActive())
-	{
 	snPacket->setPUBLISH((uint8_t) pub.header.bits.dup, (int) pub.header.bits.qos, (uint8_t) pub.header.bits.retain,
 			(uint16_t) pub.msgId, topicId, (uint8_t*) pub.payload, pub.payloadlen);
 	Event* ev1 = new Event();
 	ev1->setClientSendEvent(client, snPacket);
 	_gateway->getClientSendQue()->post(ev1);
-	}
 
 }
 
@@ -201,6 +193,9 @@ void MQTTGWPublishHandler::handleAck(Client* client, MQTTGWPacket* packet, int t
 {
 	Ack ack;
 	packet->getAck(&ack);
+
+	if ( client->isActive() || client->isAwake() )
+	{
 		MQTTSNPacket* mqttsnPacket = new MQTTSNPacket();
 		if (type == PUBREC)
 		{
@@ -219,4 +214,16 @@ void MQTTGWPublishHandler::handleAck(Client* client, MQTTGWPacket* packet, int t
 		ev1->setClientSendEvent(client, mqttsnPacket);
 		_gateway->getClientSendQue()->post(ev1);
 	}
+	else if ( client->isSleep() )
+	{
+		if (type == PUBREL)
+		{
+			MQTTGWPacket* pubComp = new MQTTGWPacket();
+			pubComp->setAck(PUBCOMP, (uint16_t)ack.msgId);
+			Event* ev1 = new Event();
+			ev1->setBrokerSendEvent(client, pubComp);
+			_gateway->getBrokerSendQue()->post(ev1);
+		}
+	}
+}
 

MQTTSNGateway/src/MQTTSNGWClient.cpp

@@ -23,7 +23,7 @@
 #include <stdio.h>
 
 using namespace MQTTSNGW;
-
+char* currentDateTime(void);
 /*=====================================
  Class ClientList
  =====================================*/
@@ -185,7 +185,6 @@ Client* ClientList::getClient(uint8_t* clientId)
 
 	while (client != 0)
 	{
-		//printf("ClientList: clientId = %s\n", client->getClientId());
 		if (strcmp((const char*)client->getClientId(), (const char*)clientId) == 0 )
 		{
 			_mutex.unlock();
@@ -259,7 +258,7 @@ bool ClientList::isAuthorized()
 /*=====================================
  Class Client
  =====================================*/
-static const char* theClientStatus[] = { "Disconnected", "TryConnecting", "Connecting", "Active", "Awake", "Asleep", "Lost" };
+static const char* theClientStatus[] = { "Disconnected", "TryConnecting", "Connecting", "Active", "Asleep", "Awake", "Lost" };
 
 Client::Client(bool secure)
 {
@@ -288,6 +287,7 @@ Client::Client(bool secure)
 	_otaClient = 0;
 	_prevClient = 0;
 	_nextClient = 0;
+	_clientSleepPacketQue.setMaxSize(MAX_SAVED_PUBLISH);
 }
 
 Client::~Client()
@@ -335,11 +335,30 @@ uint16_t Client::getWaitedSubTopicId(uint16_t msgId)
 	return _waitedSubTopicIdMap.getTopicId(msgId, &type);
 }
 
-MQTTSNPacket* Client::getClientSleepPacket()
+MQTTGWPacket* Client::getClientSleepPacket()
 {
 	return _clientSleepPacketQue.getPacket();
 }
 
+void Client::deleteFirstClientSleepPacket()
+{
+	_clientSleepPacketQue.pop();
+}
+
+int Client::setClientSleepPacket(MQTTGWPacket* packet)
+{
+	int rc = _clientSleepPacketQue.post(packet);
+	if ( rc )
+	{
+		WRITELOG("%s    %s is sleeping. the packet was saved.\n", currentDateTime(), _clientId);
+	}
+	else
+	{
+		WRITELOG("%s    %s is sleeping　but discard the packet.\n", currentDateTime(), _clientId);
+	}
+	return rc;
+}
+
 Connect* Client::getConnectData(void)
 {
 	return &_connectData;
@@ -374,12 +393,6 @@ void Client::setWaitedSubTopicId(uint16_t msgId, uint16_t topicId, MQTTSN_topicT
 	_waitedSubTopicIdMap.add(msgId, topicId, type);
 }
 
-void Client::setClientSleepPacket(MQTTSNPacket* packet)
-{
-	updateStatus(packet);
-	_clientSleepPacketQue.post(packet);
-}
-
 bool Client::checkTimeover(void)
 {
 	return (_status == Cstat_Active && _keepAliveTimer.isTimeup());
@@ -426,51 +439,34 @@ void Client::updateStatus(MQTTSNPacket* packet)
 			_keepAliveTimer.start(_keepAliveMsec * 1.5);
 			break;
 		case MQTTSN_DISCONNECT:
-		{
 			uint16_t duration;
 			packet->getDISCONNECT(&duration);
 			if (duration)
 			{
 				_status = Cstat_Asleep;
-				_keepAliveMsec = duration * 1000UL;
 			}
 			else
 			{
 				disconnected();
 			}
-		}
 			break;
 		default:
 			break;
 		}
-
 	}
-	else if (_status == Cstat_Asleep)
-	{
-		if (packet->getType() == MQTTSN_CONNECT)
-		{
-			setKeepAlive(packet);
-			_status = Cstat_Connecting;
-		}
-		else if (packet->getType() == MQTTSN_PINGREQ)
-		{
-			if ( packet->getPINGREQ() > 0 )
-			{
-				_status = Cstat_Awake;
-			}
-		}
-	}
-	else if (_status == Cstat_Awake)
+	else if (_status == Cstat_Awake || _status == Cstat_Asleep)
 	{
 		switch (packet->getType())
 		{
 		case MQTTSN_CONNECT:
-			_status = Cstat_Connecting;
-			setKeepAlive(packet);
+			_status = Cstat_Active;
 			break;
 		case MQTTSN_DISCONNECT:
 			disconnected();
 			break;
+		case MQTTSN_PINGREQ:
+			_status = Cstat_Awake;
+			break;
 		case MQTTSN_PINGRESP:
 			_status = Cstat_Asleep;
 			break;
@@ -478,6 +474,7 @@ void Client::updateStatus(MQTTSNPacket* packet)
 			break;
 		}
 	}
+	DEBUGLOG("Client Status = %s\n", theClientStatus[_status]);
 }
 
 void Client::updateStatus(ClientStatus stat)
@@ -595,6 +592,11 @@ bool Client::isSleep(void)
 	return (_status == Cstat_Asleep);
 }
 
+bool Client::isAwake(void)
+{
+	return (_status == Cstat_Awake);
+}
+
 bool Client::isSecureNetwork(void)
 {
 	return _secureNetwork;

MQTTSNGateway/src/MQTTSNGWClient.h

@@ -43,6 +43,7 @@ public:
 		_que = new Que<T>;
 	}
 
+
 	~PacketQue()
 	{
 		clear();
@@ -65,11 +66,14 @@ public:
 		}
 	}
 
-	void post(T* packet)
+	int
+	post(T* packet)
 	{
+		int rc;
 		_mutex.lock();
-		_que->post(packet);
+		rc = _que->post(packet);
 		_mutex.unlock();
+		return rc;
 	}
 
 	void pop()
@@ -93,6 +97,11 @@ public:
 		_mutex.unlock();
 	}
 
+	void setMaxSize(int size)
+	{
+		_que->setMaxSize(size);
+	}
+
 private:
 	Que<T>* _que;
 	Mutex _mutex;
@@ -232,7 +241,8 @@ public:
 	Connect* getConnectData(void);
 	uint16_t getWaitedPubTopicId(uint16_t msgId);
 	uint16_t getWaitedSubTopicId(uint16_t msgId);
-	MQTTSNPacket* getClientSleepPacket();
+	MQTTGWPacket* getClientSleepPacket(void);
+	void deleteFirstClientSleepPacket(void);
 	WaitREGACKPacketList* getWaitREGACKPacketList(void);
 
 	void eraseWaitedPubTopicId(uint16_t msgId);
@@ -240,7 +250,7 @@ public:
 	void clearWaitedPubTopicId(void);
 	void clearWaitedSubTopicId(void);
 
-	void setClientSleepPacket(MQTTSNPacket*);
+	int  setClientSleepPacket(MQTTGWPacket*);
 	void setWaitedPubTopicId(uint16_t msgId, uint16_t topicId, MQTTSN_topicTypes type);
 	void setWaitedSubTopicId(uint16_t msgId, uint16_t topicId, MQTTSN_topicTypes type);
 
@@ -277,6 +287,7 @@ public:
 	bool isDisconnect(void);
 	bool isActive(void);
 	bool isSleep(void);
+	bool isAwake(void);
 	bool isSecureNetwork(void);
 	bool isSensorNetStable(void);
 	bool isWaitWillMsg(void);
@@ -286,7 +297,7 @@ public:
 	void    setOTAClient(Client* cl);
 
 private:
-	PacketQue<MQTTSNPacket> _clientSleepPacketQue;
+	PacketQue<MQTTGWPacket> _clientSleepPacketQue;
 	WaitREGACKPacketList    _waitREGACKList;
 
 	Topics* _topics;

MQTTSNGateway/src/MQTTSNGWConnectionHandler.cpp

@@ -74,7 +74,18 @@ void MQTTSNConnectionHandler::handleConnect(Client* client, MQTTSNPacket* packet
 		return;
 	}
 
-	/* clear ConnectData of Client */
+	/* return CONNACK when the client is sleeping */
+	if ( client->isSleep() || client->isAwake() )
+	{
+		MQTTSNPacket* packet = new MQTTSNPacket();
+		packet->setCONNACK(MQTTSN_RC_ACCEPTED);
+		Event* ev = new Event();
+		ev->setClientSendEvent(client, packet);
+		_gateway->getClientSendQue()->post(ev);
+		return;
+	}
+
+	//* clear ConnectData of Client */
 	Connect* connectData = client->getConnectData();
 	memset(connectData, 0, sizeof(Connect));
 	client->disconnected();
@@ -125,7 +136,6 @@ void MQTTSNConnectionHandler::handleConnect(Client* client, MQTTSNPacket* packet
 	}
 	else
 	{
-
 		/* CONNECT message was not qued in.
 		 * create CONNECT message & send it to the broker */
 		MQTTGWPacket* mqMsg = new MQTTGWPacket();
@@ -259,6 +269,21 @@ void MQTTSNConnectionHandler::handleWillmsgupd(Client* client, MQTTSNPacket* pac
  */
 void MQTTSNConnectionHandler::handlePingreq(Client* client, MQTTSNPacket* packet)
 {
+	MQTTGWPacket* msg = 0;
+
+	if ( client->isSleep() || client->isAwake() )
+	{
+		while  ( ( msg = client->getClientSleepPacket() ) != 0 )
+		{
+			// ToDo:  This version can't re-send PUBLISH when PUBACK is not returned.
+			client->deleteFirstClientSleepPacket();  // pop the que to delete element.
+
+			Event* ev = new Event();
+			ev->setBrokerRecvEvent(client, msg);
+			_gateway->getPacketEventQue()->post(ev);
+		}
+	}
+
 	/* send PINGREQ to the broker */
 	MQTTGWPacket* pingreq = new MQTTGWPacket();
 	pingreq->setHeader(PINGREQ);

MQTTSNGateway/src/MQTTSNGWDefines.h

@@ -19,6 +19,7 @@
 
 namespace MQTTSNGW
 {
+#define DEBUG
 /*=================================
  *    Config Parametrs
  ==================================*/
@@ -38,6 +39,7 @@ namespace MQTTSNGW
 #define MAX_CLIENTS                 (100)  // Number of Clients can be handled.
 #define MAX_CLIENTID_LENGTH          (64)  // Max length of clientID
 #define MAX_INFLIGHTMESSAGES         (10)  // Number of inflight messages
+#define MAX_SAVED_PUBLISH            (20)  // Max number of PUBLISH message for Asleep state
 #define MQTTSNGW_MAX_PACKET_SIZE   (1024)  // Max Packet size  (5+2+TopicLen+PayloadLen)
 #define SIZE_OF_LOG_PACKET          (500)  // Length of the packet log in bytes
 

MQTTSNGateway/src/MQTTSNGWPublishHandler.cpp

@@ -178,10 +178,8 @@ void MQTTSNPublishHandler::handlePuback(Client* client, MQTTSNPacket* packet)
 	uint16_t msgId;
 	uint8_t rc;
 
-	if ( !client->isActive() )
+	if ( client->isActive() )
 	{
-		return;
-	}
 		MQTTGWPacket* pubAck = new MQTTGWPacket();
 
 		if ( packet->getPUBACK(&topicId, &msgId, &rc) == 0 )
@@ -201,15 +199,14 @@ void MQTTSNPublishHandler::handlePuback(Client* client, MQTTSNPacket* packet)
 			WRITELOG("  PUBACK   %d : Invalid Topic ID\n", msgId);
 		}
 	}
+}
 
 void MQTTSNPublishHandler::handleAck(Client* client, MQTTSNPacket* packet, uint8_t packetType)
 {
 	uint16_t msgId;
 
-	if ( !client->isActive() )
+	if ( client->isActive() )
 	{
-		return;
-	}
 		if ( packet->getACK(&msgId) == 0 )
 		{
 			return;
@@ -220,6 +217,7 @@ void MQTTSNPublishHandler::handleAck(Client* client, MQTTSNPacket* packet, uint8
 		ev1->setBrokerSendEvent(client, ackPacket);
 		_gateway->getBrokerSendQue()->post(ev1);
 	}
+}
 
 void MQTTSNPublishHandler::handleRegister(Client* client, MQTTSNPacket* packet)
 {
@@ -229,10 +227,8 @@ void MQTTSNPublishHandler::handleRegister(Client* client, MQTTSNPacket* packet)
 	MQTTSN_topicid topicid;
 
 
-	if ( !client->isActive() )
+	if ( client->isActive() || client->isAwake())
 	{
-		return;
-	}
 		MQTTSNPacket* regAck = new MQTTSNPacket();
 		if ( packet->getREGISTER(&id, &msgId, &topicName) == 0 )
 		{
@@ -248,5 +244,6 @@ void MQTTSNPublishHandler::handleRegister(Client* client, MQTTSNPacket* packet)
 		Event* ev = new Event();
 		ev->setClientSendEvent(client, regAck);
 		_gateway->getClientSendQue()->post(ev);
+	}
 
 }

MQTTSNGateway/src/linux/Timer.h

@@ -16,8 +16,10 @@
 #ifndef MQTTSNGATEWAY_SRC_LINUX_TIMER_H_
 #define MQTTSNGATEWAY_SRC_LINUX_TIMER_H_
 
+#include <stdint.h>
+#include <sys/time.h>
 #include "MQTTSNGWDefines.h"
-#include <time.h>
+
 namespace MQTTSNGW
 {
 /*==========================================================

MQTTSNGateway/src/linux/udp/SensorNetwork.cpp

@@ -21,7 +21,6 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <string.h>
-#include <errno.h>
 #include <regex>
 #include <string>
 #include <stdlib.h>

MQTTSNGateway/src/linux/udp6/SensorNetwork.cpp

@@ -25,7 +25,6 @@
 #include <netdb.h>
 #include <string.h>
 #include <iostream>
-#include <errno.h>
 #include <regex>
 #include <string>
 #include <stdlib.h>

MQTTSNGateway/src/linux/xbee/SensorNetwork.cpp

@@ -18,10 +18,8 @@
 #include <unistd.h>
 #include <termios.h>
 #include <fcntl.h>
-#include <errno.h>
 #include <string.h>
 #include <stdlib.h>
-
 #include "SensorNetwork.h"
 #include "MQTTSNGWProcess.h"