BugFix: Network can not handle EPIPE error. Issue#35 #36

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

MQTTSNGateway/gateway.conf

@@ -22,7 +22,8 @@ ClientAuthentication=NO
 
 #RootCAfile=/etc/ssl/certs/ca-certificates.crt
 #RootCApath=/etc/ssl/certs/
-#CertsDirectory=/usr/share/GW/IoTcerts/
+#CertsFile=/path/to/certKey.pem
+#PrivateKey=/path/to/privateKey.pem
 
 GatewayID=1
 GatewayName=PahoGateway-01

MQTTSNGateway/src/MQTTGWPacket.cpp

@@ -184,9 +184,10 @@ int MQTTGWPacket::recv(Network* network)
 	unsigned char c;
 
 	/* read First Byte of Packet */
-	if (network->recv((unsigned char*)&_header.byte, 1) == -1)
+	int rc = network->recv((unsigned char*)&_header.byte, 1);
+	if ( rc <= 0)
 	{
-		return -1;
+		return rc;
 	}
 	/* read RemainingLength */
 	do

MQTTSNGateway/src/MQTTSNGWBrokerRecvTask.cpp

@@ -59,8 +59,10 @@ void BrokerRecvTask::run(void)
 
 	while (true)
 	{
+		_light->blueLight(false);
 		if (CHK_SIGINT)
 		{
+			WRITELOG("%s BrokerRecvTask   stopped.\n", currentDateTime());
 			return;
 		}
 		timeout.tv_sec = 0;
@@ -72,7 +74,6 @@ void BrokerRecvTask::run(void)
 
 		/* Prepare sockets list to read */
 		Client* client = _gateway->getClientList()->getClient();
-		_light->blueLight(false);
 
 		while (client > 0)
 		{
@@ -115,7 +116,8 @@ void BrokerRecvTask::run(void)
 								if ( log(client, packet) == -1 )
 
 								{
-									continue;
+									delete packet;
+									goto nextClient;
 								}
 
 								/* post a BrokerRecvEvent */
@@ -125,13 +127,7 @@ void BrokerRecvTask::run(void)
 							}
 							else
 							{
-								_light->blueLight(false);
-								if ( rc == 0 )
-								{
-									delete packet;
-									continue;
-								}
-								else if (rc == -1)
+								if (rc == -1)
 								{
 									WRITELOG("%s BrokerRecvTask can't receive a packet from the broker errno=%d %s%s\n", ERRMSG_HEADER, errno, client->getClientId(), ERRMSG_FOOTER);
 								}
@@ -141,14 +137,14 @@ void BrokerRecvTask::run(void)
 								}
 								else if ( rc == -3 )
 								{
-									WRITELOG("%s BrokerRecvTask can't create the packet %s%s\n", ERRMSG_HEADER, client->getClientId(), ERRMSG_FOOTER);
+									WRITELOG("%s BrokerRecvTask can't get memories for the packet %s%s\n", ERRMSG_HEADER, client->getClientId(), ERRMSG_FOOTER);
 								}
 
 								delete packet;
 
-								/* disconnect the client */
-								if ( rc == -1 || rc == -2 )
+								if ( (rc == -1 || rc == -2) && client->isActive() )
 								{
+									/* disconnect the client */
 									packet = new MQTTGWPacket();
 									packet->setHeader(DISCONNECT);
 									ev = new Event();
@@ -158,16 +154,11 @@ void BrokerRecvTask::run(void)
 							}
 						}
 					}
+					nextClient:
 					client = client->getNextClient();
 				}
-				_light->blueLight(false);
 			}
 		}
-		else
-		{
-			_light->greenLight(false);
-		}
-		maxSock = 0;
 	}
 }
 
@@ -202,6 +193,7 @@ int BrokerRecvTask::log(Client* client, MQTTGWPacket* packet)
 		WRITELOG(FORMAT_Y_Y_W, currentDateTime(), packet->getName(), LEFTARROW, client->getClientId(), packet->print(pbuf));
 		break;
 	default:
+		WRITELOG("Type=%x\n", packet->getType());
 		rc = -1;
 		break;
 	}

MQTTSNGateway/src/MQTTSNGWBrokerSendTask.cpp

@@ -68,6 +68,7 @@ void BrokerSendTask::run()
 
 		if ( ev->getEventType() == EtStop )
 		{
+			WRITELOG("%s BrokerSendTask   stopped.\n", currentDateTime());
 			delete ev;
 			return;
 		}
@@ -77,34 +78,23 @@ void BrokerSendTask::run()
 			client = ev->getClient();
 			packet = ev->getMQTTGWPacket();
 
+			if ( packet->getType() == CONNECT && client->getNetwork()->isValid() )
+			{
+				client->getNetwork()->close();
+			}
+
 			if ( !client->getNetwork()->isValid() )
 			{
 				/* connect to the broker and send a packet */
-				char* portNo = _gwparams->port;
-				const char* cert = 0;
-				const char* keyFile = 0;
-				string certFile;
-				string privateKeyFile;
 
 				if (client->isSecureNetwork())
 				{
-					portNo = _gwparams->portSecure;
-					if ( _gwparams->certDirectory )
-					{
-						certFile = _gwparams->certDirectory;
-						certFile += client->getClientId();
-						certFile += ".crt";
-						cert = certFile.c_str();
-						privateKeyFile = _gwparams->certDirectory;
-						privateKeyFile += client->getClientId();
-						privateKeyFile += ".key";
-						keyFile = privateKeyFile.c_str();
-					}
-					rc = client->getNetwork()->connect(_gwparams->brokerName, _gwparams->portSecure, _gwparams->rootCApath, _gwparams->rootCAfile, cert, keyFile);
+					rc = client->getNetwork()->connect(_gwparams->brokerName, _gwparams->portSecure, _gwparams->rootCApath,
+							  _gwparams->rootCAfile, _gwparams->certKey, _gwparams->privateKey);
 				}
 				else
 				{
-					rc = client->getNetwork()->connect(_gwparams->brokerName, portNo);
+					rc = client->getNetwork()->connect(_gwparams->brokerName, _gwparams->port);
 				}
 
 				if ( !rc )
@@ -133,13 +123,14 @@ void BrokerSendTask::run()
 			{
 				WRITELOG("%s BrokerSendTask can't send a packet to the broker errno=%d %s%s\n",
 						ERRMSG_HEADER, rc == -1 ? errno : 0, client->getClientId(), ERRMSG_FOOTER);
+				client->getNetwork()->close();
 
 				/* Disconnect the client */
 				packet = new MQTTGWPacket();
 				packet->setHeader(DISCONNECT);
-				ev = new Event();
-				ev->setBrokerRecvEvent(client, packet);
-				_gateway->getPacketEventQue()->post(ev);
+				Event* ev1 = new Event();
+				ev1->setBrokerRecvEvent(client, packet);
+				_gateway->getPacketEventQue()->post(ev1);
 			}
 
 			_light->blueLight(false);

MQTTSNGateway/src/MQTTSNGWClientRecvTask.cpp

@@ -61,6 +61,7 @@ void ClientRecvTask::run()
 
 		if (CHK_SIGINT)
 		{
+			WRITELOG("%s ClientRecvTask   stopped.\n", currentDateTime());
 			delete packet;
 			return;
 		}
@@ -109,7 +110,7 @@ void ClientRecvTask::run()
 
 				/* create a client */
 				client = _gateway->getClientList()->createClient(_sensorNetwork->getSenderAddress(), &data.clientID, false, false);
-
+				log(client, packet, &data.clientID);
 				if (!client)
 				{
 					WRITELOG("%s Client was rejected. CONNECT message has been discarded.%s\n", ERRMSG_HEADER, ERRMSG_FOOTER);
@@ -117,8 +118,6 @@ void ClientRecvTask::run()
 					continue;
 				}
 
-				log(client, packet);
-
 				/* set sensorNetAddress & post Event */
 				client->setClientAddress(_sensorNetwork->getSenderAddress());
 				ev = new Event();
@@ -143,11 +142,27 @@ void ClientRecvTask::run()
 	}
 }
 
-void ClientRecvTask::log(Client* client, MQTTSNPacket* packet)
+void ClientRecvTask::log(Client* client, MQTTSNPacket* packet, MQTTSNString* id)
 {
 	char pbuf[SIZE_OF_LOG_PACKET * 3];
+	const char* clientId;
+	char cstr[MAX_CLIENTID_LENGTH + 1];
 	char msgId[6];
-	const char* clientId = client ? (const char*)client->getClientId() : NONACTCLT ;
+
+	if ( id )
+	{
+		memset((void*)cstr, 0, id->lenstring.len);
+		strncpy(cstr, id->lenstring.data, id->lenstring.len) ;
+		clientId = cstr;
+	}
+	else if ( client )
+	{
+		clientId = client->getClientId();
+	}
+	else
+	{
+		clientId = UNKNOWNCL;
+	}
 
 	switch (packet->getType())
 	{

MQTTSNGateway/src/MQTTSNGWClientRecvTask.h

@@ -35,7 +35,7 @@ public:
 	void run();
 
 private:
-	void log(Client*, MQTTSNPacket*);
+	void log(Client*, MQTTSNPacket*, MQTTSNString* id = 0);
 
 	Gateway*       _gateway;
 	SensorNetwork* _sensorNetwork;

MQTTSNGateway/src/MQTTSNGWClientSendTask.cpp

@@ -47,6 +47,7 @@ void ClientSendTask::run()
 
 		if (ev->getEventType() == EtStop)
 		{
+			WRITELOG("%s ClientSendTask   stopped.\n", currentDateTime());
 			delete ev;
 			break;
 		}
@@ -76,7 +77,7 @@ void ClientSendTask::log(Client* client, MQTTSNPacket* packet)
 {
 	char pbuf[SIZE_OF_LOG_PACKET * 3];
 	char msgId[6];
-	const char* clientId = client ? (const char*)client->getClientId() : NONACTCLT ;
+	const char* clientId = client ? (const char*)client->getClientId() : UNKNOWNCL ;
 
 	switch (packet->getType())
 	{

MQTTSNGateway/src/MQTTSNGWDefines.h

@@ -26,6 +26,12 @@ namespace MQTTSNGW
 #define CONFIG_FILE      "gateway.conf"
 #define CLIENT_LIST      "clients.conf"
 
+/*==========================================================
+ *    Gateway default parameters
+ ===========================================================*/
+#define DEFAULT_KEEP_ALIVE_TIME     (900)  // 900 secs = 15 mins
+#define DEFAULT_MQTT_VERSION          (4)  // Defualt MQTT version
+
 /*=================================
  *    MQTT-SN Parametrs
  ==================================*/

MQTTSNGateway/src/MQTTSNGWPacketHandleTask.cpp

@@ -32,7 +32,7 @@ using namespace std;
 using namespace MQTTSNGW;
 
 #define EVENT_QUE_TIME_OUT  2000      // 2000 msecs
-
+char* currentDateTime(void);
 /*=====================================
  Class PacketHandleTask
  =====================================*/
@@ -99,24 +99,13 @@ void PacketHandleTask::run()
 
 		if (ev->getEventType() == EtStop)
 		{
+			WRITELOG("%s PacketHandleTask stopped.\n", currentDateTime());
 			delete ev;
 			return;
 		}
 
 		if (ev->getEventType() == EtTimeout)
 		{
-			/*------     Is Client Lost ?    ---------*/
-			/*
-			client = _gateway->getClientList()->getClient();
-			while (client > 0)
-			{
-				if ( client->checkTimeover() )
-				{
-					client->disconnected();
-				}
-				client = client->getNextClient();
-			}
-			*/
 			/*------ Check Keep Alive Timer & send Advertise ------*/
 			if (_advertiseTimer.isTimeup())
 			{

MQTTSNGateway/src/MQTTSNGateway.cpp

@@ -41,7 +41,8 @@ Gateway::Gateway()
 	_params.portSecure = 0;
 	_params.rootCApath = 0;
 	_params.rootCAfile = 0;
-	_params.certDirectory = 0;
+	_params.certKey = 0;
+	_params.privateKey = 0;
 	_params.clientListName = 0;
 	_params.configName = 0;
 	_packetEventQue.setMaxSize(MAX_INFLIGHTMESSAGES * MAX_CLIENTS);
@@ -73,9 +74,13 @@ Gateway::~Gateway()
 	{
 		free(_params.portSecure);
 	}
-	if ( _params.certDirectory )
+	if ( _params.certKey )
 	{
-		free(_params.certDirectory);
+		free(_params.certKey);
+	}
+	if ( _params.privateKey )
+	{
+		free(_params.privateKey);
 	}
 	if ( _params.rootCApath )
 	{
@@ -115,9 +120,13 @@ void Gateway::initialize(int argc, char** argv)
 		_params.portSecure = strdup(param);
 	}
 
-	if (getParam("CertsDirectory", param) == 0)
+	if (getParam("CertKey", param) == 0)
 	{
-		_params.certDirectory = strdup(param);
+		_params.certKey = strdup(param);
+	}
+	if (getParam("PrivateKey", param) == 0)
+		{
+			_params.privateKey = strdup(param);
 		}
 	if (getParam("RootCApath", param) == 0)
 	{
@@ -221,7 +230,8 @@ void Gateway::run(void)
 	WRITELOG(" Broker:     %s : %s, %s\n", _params.brokerName, _params.port, _params.portSecure);
 	WRITELOG(" RootCApath: %s\n", _params.rootCApath);
 	WRITELOG(" RootCAfile: %s\n", _params.rootCAfile);
-	WRITELOG(" ClientCerts: %s\n", _params.certDirectory);
+	WRITELOG(" CertKey:    %s\n", _params.certKey);
+	WRITELOG(" PrivateKey: %s\n", _params.privateKey);
 
 	MultiTaskProcess::run();
 
@@ -239,7 +249,7 @@ void Gateway::run(void)
 	/* wait until all threads stop */
 	MultiTaskProcess::waitStop();
 
-	WRITELOG("%s MQTT-SN Gateway stoped\n", currentDateTime());
+	WRITELOG("\n%s MQTT-SN Gateway  stoped\n\n", currentDateTime());
 	_lightIndicator.allLightOff();
 }
 

MQTTSNGateway/src/MQTTSNGateway.h

@@ -22,16 +22,10 @@
 
 namespace MQTTSNGW
 {
-/*==========================================================
- *           Gateway default parameters
- ===========================================================*/
-#define DEFAULT_KEEP_ALIVE_TIME     (900)  // 900 secs = 15 mins
-#define DEFAULT_MQTT_VERSION          (4)  // Defualt MQTT version
-
 /*=================================
  *    Starting prompt
  ==================================*/
-#define GATEWAY_VERSION " * Version: 0.9.0"
+#define GATEWAY_VERSION " * Version: 0.9.1"
 
 #define PAHO_COPYRIGHT0 " * MQTT-SN Transparent Gateway"
 #define PAHO_COPYRIGHT1 " * Part of Project Paho in Eclipse"
@@ -49,7 +43,7 @@ namespace MQTTSNGW
  ===========================================================*/
 #define CLIENT      "Client"
 #define CLIENTS     "Clients"
-#define NONACTCLT   "Non Active Client !"
+#define UNKNOWNCL   "Unknown Client !"
 #define LEFTARROW   "<---"
 #define RIGHTARROW  "--->"
 
@@ -164,7 +158,8 @@ typedef struct
 	char* portSecure;
 	char* rootCApath;
 	char* rootCAfile;
-	char* certDirectory;
+	char* certKey;
+	char* privateKey;
 }GatewayParams;
 
 /*=====================================

MQTTSNGateway/src/linux/Network.cpp

@@ -158,7 +158,7 @@ bool TCPStack::connect(const char* host, const char* service)
 {
 	if (isValid())
 	{
-		return false;
+		return true;
 	}
 	addrinfo hints;
 	memset(&hints, 0, sizeof(addrinfo));
@@ -192,7 +192,7 @@ bool TCPStack::connect(const char* host, const char* service)
 
 	if (::connect(sockfd, _addrinfo->ai_addr, _addrinfo->ai_addrlen) < 0)
 	{
-		//perror("TCPStack connect");
+		DEBUGLOG("Can not connect the socket. Check the PortNo! \n");
 		::close(sockfd);
 		return false;
 	}
@@ -233,6 +233,7 @@ int TCPStack::getSock()
  =======================================*/
 int Network::_numOfInstance = 0;
 SSL_CTX* Network::_ctx = 0;
+SSL_SESSION* Network::_session = 0;
 
 Network::Network(bool secure) :
 		TCPStack()
@@ -240,57 +241,49 @@ Network::Network(bool secure) :
 	_ssl = 0;
 	_secureFlg = secure;
 	_busy = false;
-	_session = 0;
 	_sslValid = false;
 }
 
 Network::~Network()
 {
-	if (_ssl)
-	{
-		SSL_shutdown(_ssl);
-		SSL_free(_ssl);
-		_numOfInstance--;
-	}
-	if (_session )
-	{
-		SSL_SESSION_free(_session);
-	}
-	if (_ctx && _numOfInstance == 0)
-	{
-		SSL_CTX_free(_ctx);
-		_ctx = 0;
-		ERR_free_strings();
-	}
+	close();
 }
 
 bool Network::connect(const char* host, const char* port)
 {
+	bool rc = false;
+	_mutex.lock();
 	if (_secureFlg)
 	{
-		return false;
+		goto exit;
 	}
 
 	if (getSock() == 0)
 	{
 		if (!TCPStack::connect(host, port))
 		{
-			return false;
+			goto exit;
 		}
 	}
-	return true;
+	rc = true;
+exit:
+	_mutex.unlock();
+	return rc;
 }
 
-bool Network::connect(const char* host, const char* port, const char* caPath, const char* caFile, const char* cert, const char* prvkey)
+bool Network::connect(const char* host, const char* port, const char* caPath, const char* caFile, const char* certkey, const char* prvkey)
 {
 	char errmsg[256];
 	char peer_CN[256];
-	int rc = 0;
+	bool rc;
 
+	_mutex.lock();
+	try
+	{
 		if (!_secureFlg)
 		{
 			WRITELOG("TLS is not required.\n");
-		return false;
+			throw;
 		}
 
 		if (_ctx == 0)
@@ -302,39 +295,42 @@ bool Network::connect(const char* host, const char* port, const char* caPath, co
 			{
 				ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
 				WRITELOG("SSL_CTX_new() %s\n", errmsg);
-			return false;
+				throw;
 			}
 
 			if (!SSL_CTX_load_verify_locations(_ctx, caFile, caPath))
 			{
 				ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
 				WRITELOG("SSL_CTX_load_verify_locations() %s\n", errmsg);
-			return false;
+				throw;
+			}
+
+			if ( certkey )
+			{
+				if ( SSL_CTX_use_certificate_file(_ctx, certkey, SSL_FILETYPE_PEM) != 1 )
+				{
+					ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
+					WRITELOG("SSL_CTX_use_certificate_file() %s %s\n", certkey, errmsg);
+					throw;
+				}
+			}
+			if ( prvkey )
+			{
+				if ( SSL_CTX_use_PrivateKey_file(_ctx, prvkey, SSL_FILETYPE_PEM) != 1 )
+				{
+					ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
+					WRITELOG("SSL_use_PrivateKey_file() %s %s\n", prvkey, errmsg);
+					throw;
+				}
 			}
 		}
 
-	if (!_sslValid)
+		if (! TCPStack::isValid())
 		{
 			if ( !TCPStack::connect(host, port) )
 			{
-			return false;
+				throw;
 			}
-		/*
-		if ( _ssl )
-		{
-			if (!SSL_set_fd(_ssl, getSock()))
-			{
-				ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
-				WRITELOG("SSL_set_fd()  %s\n", errmsg);
-				SSL_free(_ssl);
-			}
-			else
-			{
-				_sslValid = true;
-				return true;
-			}
-		}
-		*/
 		}
 
 		_ssl = SSL_new(_ctx);
@@ -342,42 +338,7 @@ bool Network::connect(const char* host, const char* port, const char* caPath, co
 		{
 			ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
 			WRITELOG("SSL_new()  %s\n", errmsg);
-		return false;
-	}
-
-	if (_session)
-	{
-		rc = SSL_set_session(_ssl, _session);
-	}
-
-	if (!SSL_set_fd(_ssl, getSock()))
-	{
-		ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
-		WRITELOG("SSL_set_fd()  %s\n", errmsg);
-		SSL_free(_ssl);
-	}
-
-	if ( cert )
-	{
-		if ( SSL_use_certificate_file(_ssl, cert, SSL_FILETYPE_PEM) != 1 )
-		{
-			ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
-			WRITELOG("SSL_use_certificate_file() %s %s\n", cert, errmsg);
-			SSL_free(_ssl);
-			_ssl = 0;
-			return false;
-		}
-	}
-	if ( prvkey )
-	{
-		if ( SSL_use_PrivateKey_file(_ssl, prvkey, SSL_FILETYPE_PEM) != 1 )
-		{
-			ERR_error_string_n(ERR_get_error(), errmsg, sizeof(errmsg));
-			WRITELOG("SSL_use_PrivateKey_file() %s %s\n", prvkey, errmsg);
-			SSL_free(_ssl);
-			_ssl = 0;
-			return false;
-		}
+			throw;
 		}
 
 		if (!SSL_set_fd(_ssl, TCPStack::getSock()))
@@ -386,7 +347,12 @@ bool Network::connect(const char* host, const char* port, const char* caPath, co
 			WRITELOG("SSL_set_fd()  %s\n", errmsg);
 			SSL_free(_ssl);
 			_ssl = 0;
-		return false;
+			throw;
+		}
+
+		if (_session)
+		{
+			SSL_set_session(_ssl, _session);
 		}
 
 		if (SSL_connect(_ssl) != 1)
@@ -395,15 +361,16 @@ bool Network::connect(const char* host, const char* port, const char* caPath, co
 			WRITELOG("SSL_connect() %s\n", errmsg);
 			SSL_free(_ssl);
 			_ssl = 0;
-		return false;
+			throw;
 		}
 
-	if ( (rc = SSL_get_verify_result(_ssl)) != X509_V_OK)
+		int result;
+		if ( (result = SSL_get_verify_result(_ssl)) != X509_V_OK)
 		{
-		WRITELOG("SSL_get_verify_result() error: %s.\n", X509_verify_cert_error_string(rc));
+			WRITELOG("SSL_get_verify_result() error: %s.\n", X509_verify_cert_error_string(result));
 			SSL_free(_ssl);
 			_ssl = 0;
-		return false;
+			throw;
 		}
 
 		X509* peer = SSL_get_peer_certificate(_ssl);
@@ -419,16 +386,23 @@ bool Network::connect(const char* host, const char* port, const char* caPath, co
 			WRITELOG("SSL_get_peer_certificate() error: Broker %s dosen't match the host name %s\n", peer_CN, host);
 			SSL_free(_ssl);
 			_ssl = 0;
-		return false;
+			throw;
 		}
 
 		if (_session == 0)
 		{
-		//_session = SSL_get1_session(_ssl);
+			_session = SSL_get1_session(_ssl);
 		}
 		_numOfInstance++;
 		_sslValid = true;
-	return true;
+		rc = true;
+	}
+	catch (...)
+	{
+		rc = false;
+	}
+	_mutex.unlock();
+	return rc;
 }
 
 int Network::send(const uint8_t* buf, uint16_t length)
@@ -446,6 +420,12 @@ int Network::send(const uint8_t* buf, uint16_t length)
 	else
 	{
 		_mutex.lock();
+
+		if ( !_ssl )
+		{
+			_mutex.unlock();
+			return -1;
+		}
 		_busy = true;
 
 		while (true)
@@ -515,8 +495,14 @@ int Network::recv(uint8_t* buf, uint16_t len)
 		return 0;
 	}
 	_mutex.lock();
-	_busy = true;
 
+	if ( !_ssl )
+	{
+		_mutex.unlock();
+		return 0;
+	}
+
+	_busy = true;
 	loop: do
 	{
 		readBlockedOnWrite = false;
@@ -535,7 +521,7 @@ int Network::recv(uint8_t* buf, uint16_t len)
 			SSL_shutdown(_ssl);
 			_ssl = 0;
 			_numOfInstance--;
-			TCPStack::close();
+			//TCPStack::close();
 			_busy = false;
 			_mutex.unlock();
 			return -1;
@@ -585,16 +571,37 @@ int Network::recv(uint8_t* buf, uint16_t len)
 
 void Network::close(void)
 {
+	_mutex.lock();
 	if (_secureFlg)
 	{
-		_sslValid = false;
+		if (_ssl)
+		{
+			SSL_shutdown(_ssl);
 			SSL_free(_ssl);
+			_numOfInstance--;
 			_ssl = 0;
+			_sslValid = false;
+			_busy = false;
+		}
+		if (_session && _numOfInstance == 0)
+		{
+			SSL_SESSION_free(_session);
+			_session = 0;
+		}
+		if (_ctx && _numOfInstance == 0)
+		{
+			SSL_CTX_free(_ctx);
+			_ctx = 0;
+			ERR_free_strings();
+		}
 	}
 	TCPStack::close();
+	_mutex.unlock();
 }
 
 bool Network::isValid()
+{
+	if ( TCPStack::isValid() )
 	{
 		if (_secureFlg)
 		{
@@ -605,24 +612,12 @@ bool Network::isValid()
 		}
 		else
 		{
-		return TCPStack::isValid();
+			return true;
+		}
 	}
 	return false;
 }
 
-void Network::disconnect()
-{
-	if (_ssl)
-	{
-		SSL_shutdown(_ssl);
-		_ssl = 0;
-	}
-	_sslValid = false;
-	_busy = false;
-	TCPStack::close();
-
-}
-
 int Network::getSock()
 {
 	return TCPStack::getSock();

MQTTSNGateway/src/linux/Network.h

@@ -71,9 +71,8 @@ public:
 	Network(bool secure);
 	virtual ~Network();
 
-	bool connect(const char* host, const char* port, const char* caPath, const char* caFile, const char* sert, const char* prvkey);
+	bool connect(const char* host, const char* port, const char* caPath, const char* caFile, const char* cert, const char* prvkey);
 	bool connect(const char* host, const char* port);
-	void disconnect(void);
 	void close(void);
 	int  send(const uint8_t* buf, uint16_t length);
 	int  recv(uint8_t* buf, uint16_t len);
@@ -84,9 +83,8 @@ public:
 
 private:
 	static SSL_CTX* _ctx;
+	static SSL_SESSION* _session;
 	static int _numOfInstance;
-
-	SSL_SESSION* _session;
 	SSL* _ssl;
 	bool _secureFlg;
 	Mutex _mutex;