Added the new enableTCPKeepAlive method which enable the feature for all new connected client after the call (this fixes a very annoying crash) and I corrected a bug with the maxClient setting

src/app/CFGFileParser.cpp

@@ -16,6 +16,7 @@ void *CFGFileParser::parseFile()
     if(!_sdCardManager.isMounted()) return NULL;
 
     file = _sdCardManager.open(_resource);
+    //We check if the file name is not NULL :-)
     if(!file)
     {
       delete dictioRef;

src/app/CFGParameterValue.cpp

@@ -46,7 +46,6 @@ CFGParameterValue::~CFGParameterValue()
 void CFGParameterValue::setValue(const char *value, bool isQuoted)
 {
   _quotedValue = isQuoted;
-
   free(_value);_value = NULL;
   _value = (char *) malloc((strlen(value) * sizeof(char)) + 1); //+1 for the string terminating character
   strcpy(_value, value);

src/app/SAB.cpp

@@ -19,6 +19,30 @@ _pcf(_boardConfig.getI2C_IOExpanderAddress(), Wire),
 _ioManager(_pcf),
 _taskSchedulerManager(_rtcManager),
 _error(0)
+{
+  initCommonConfig();
+}
+
+SAB::SAB(const BoardConfig boardConfig, const unsigned int webServerPort, const unsigned int ftpServerPort) : _boardConfig(boardConfig),
+_sdCardManager(_boardConfig.getSPI_SDCard_cs(), _boardConfig.getSPISpeed()),
+_display(_boardConfig.getScreenWidth(), _boardConfig.getScreenHeight(), &Wire),
+_screenManager(_display, &_sdCardManager), 
+_rtc(), 
+_rtcManager(_rtc),  
+_connectivityManager(NULL), 
+//_webServerManager(webServerPort, &_sdCardManager),
+_webServer(webServerPort, &_sdCardManager, 10),
+_ftpServer(ftpServerPort, &_sdCardManager, "ESP8266", "12345678"),
+_dbWSServer(81),
+_pcf(_boardConfig.getI2C_IOExpanderAddress(), Wire), 
+_ioManager(_pcf),
+_taskSchedulerManager(_rtcManager),
+_error(0)
+{
+  initCommonConfig();
+}
+
+void SAB::initCommonConfig()
 {
   //We set the gpio up
   initGPIO();
@@ -44,49 +68,11 @@ _error(0)
   if(!_pcf.begin()){_error |= IO_INIT_ERR;}
 
   _powerUpTime = _rtcManager.getDateTime();
-  _dbWSServer.begin();
-}
 
-SAB::SAB(const BoardConfig boardConfig, const unsigned int webServerPort, const unsigned int ftpServerPort) : _boardConfig(boardConfig),
+  //We set the different servers :
-_sdCardManager(_boardConfig.getSPI_SDCard_cs(), _boardConfig.getSPISpeed()),
-_display(_boardConfig.getScreenWidth(), _boardConfig.getScreenHeight(), &Wire),
-_screenManager(_display, &_sdCardManager), 
-_rtc(), 
-_rtcManager(_rtc),  
-_connectivityManager(NULL), 
-//_webServerManager(webServerPort, &_sdCardManager),
-_webServer(webServerPort, &_sdCardManager, 10),
-_ftpServer(ftpServerPort, &_sdCardManager, "ESP8266", "12345678"),
-_dbWSServer(81),
-_pcf(_boardConfig.getI2C_IOExpanderAddress(), Wire), 
-_ioManager(_pcf),
-_taskSchedulerManager(_rtcManager),
-_error(0)
-{
-  //We set the gpio up
-  initGPIO();
-  Serial.begin(115200, SERIAL_8N1, SERIAL_TX_ONLY);
-  Serial.println();
-  delay(200);
-  //We initialize the pins for the  I2C communication
-  Wire.begin(_boardConfig.getI2C_sda(), _boardConfig.getI2C_scl());
-  if(!_rtc.begin()) _error |= RTC_BEGIN_ERR;
-  else
-  {
-    SAB::_rtcManagerP = &_rtcManager;
-  }
-  if(!_display.begin(SSD1306_SWITCHCAPVCC, _boardConfig.getI2C_screenAddress())) _error |= DISP_BEGIN_ERR;
-  if(!_sdCardManager.mountSD()){ _error |= SDCARD_INIT_ERR; Serial.print("Failed to init SDCard : SPI_SPEED : "); Serial.print(8000000); Serial.print(" CS PIN : "); Serial.println(_boardConfig.getSPI_SDCard_cs());}
-  else
-  {
-    _sdCardManager.setTimeCallback(&(SAB::myTimeCallback));
-  }
-  _screenManager.init();
-  _connectivityManager = new ConnectivityManager(_sdCardManager);
-  if(!_pcf.begin()){_error |= IO_INIT_ERR;}
-
-  _powerUpTime = _rtcManager.getDateTime();
   _dbWSServer.begin();
+  _webServer.enableTcpKeepAlive(15,5,5);
+  _ftpServer.enableTcpKeepAlive(15,5,5);
 }
 
 void SAB::initGPIO()

src/app/SAB.h

@@ -49,6 +49,7 @@ class SAB
   private:
     void initGPIO();
     static time_t myTimeCallback();
+    void initCommonConfig();
     const BoardConfig _boardConfig;
     
     

src/app/TCPServer.h

@@ -5,7 +5,7 @@
 #include "List.h"
 #include "TCPClient.h"
 
-#define MAX_CLIENT -1
+#define MAX_CLIENT 0
 //#define DEBUG_TCPS
 
 
@@ -62,6 +62,17 @@ class TCPServer
         _serverStarted = false;
       }
     }
+
+    virtual void enableTCPKeepAlive(uint16_t timeBetween2KATransmitions = TCP_DEFAULT_KEEPALIVE_IDLE_SEC,
+                                    uint16_t timeBetweenFailedKARetransmissions = TCP_DEFAULT_KEEPALIVE_INTERVAL_SEC,
+                                    uint8_t retriesBeforeDrop = TCP_DEFAULT_KEEPALIVE_COUNT)
+    {
+      _TKAIdleSec = timeBetween2KATransmitions;
+      _TKAIntvSec = timeBetweenFailedKARetransmissions;
+      _TKACount = retriesBeforeDrop;
+    }
+
+    virtual void disableTCPKeepAlive(){ _TKAIdleSec = 0;_TKAIntvSec = 0;_TKACount = 0; }
   
   protected:
     virtual T* createNewClient(WiFiClient wc)
@@ -73,7 +84,7 @@ class TCPServer
     {
       WiFiClient wc;
       
-      if(_maxClient == -1 || _maxClient > _clientList.count())
+      if(!_maxClient || _maxClient > _clientList.count())
       {
         wc = _wifiServer.available();
       }
@@ -81,11 +92,15 @@ class TCPServer
       if(wc && wc.connected())
       {
         T *clientPointer = createNewClient(wc);
-		    //Activate keepAlive
+		    //We activate the TKA : (The check is internally done in the
-		    (clientPointer->_client).keepAlive(15, 5, 5);
+		    //ClientContext.h class : ie if one of the provided parameters is 0, then TKA is disabled)
+		    (clientPointer->_client).keepAlive(_TKAIdleSec, _TKAIntvSec, _TKACount);
+       
         _clientList.addFirst(clientPointer);
         #ifdef DEBUG_TCPS
         Serial.printf("TCPServer : New client accepted. Id : %u , Number of clients : %u, local port : %u, remote port : %u\n",clientPointer->_id, _clientList.count(),clientPointer->_client.localPort(),clientPointer->_client.remotePort());
+        if(_TKAIdleSec && _TKAIntvSec && _TKACount)
+          Serial.printf("TCPKeepAlive enabled for client id : %u\n", clientPointer->_id);
         #endif
         greetClient(clientPointer);
       }
@@ -104,7 +119,7 @@ class TCPServer
     
     virtual void greetClient(T *client)
     {
-	  client->_client.printf_P(PSTR("Successfully connected at %lu !\r\nYour are client with id : %u\r\n"), millis(), client->_id);
+	    client->_client.printf_P(PSTR("Successfully connected at %lu !\r\nYour are client with id : %u\r\n"), millis(), client->_id);
     }
     
     virtual void getClientData()
@@ -133,14 +148,14 @@ class TCPServer
       else if(!(_currentClient->_client).connected())
       {
         #ifdef DEBUG_TCPS
-        Serial.print("TCPServer : Client disconnected and can be discarded : ");Serial.println(_currentClient->_id);
+        Serial.printf("TCPServer : Client disconnected and can be discarded : %u\n", _currentClient->_id);
         #endif
         _currentClient->_clientState = TCPClient::DISCARDED;
       }
 	    else //Strange
 	    {
 		    #ifdef DEBUG_TCPS
-		    Serial.printf("Client status %u : %u and available : %u Is keepAlive enabled : %d\n", _currentClient->_id, (_currentClient->_client).status(), (_currentClient->_client).available(), (_currentClient->_client).isKeepAliveEnabled());
+		    Serial.printf("Client(%u/%u) id : %u, with TCP status : %u and available : %u, Is keepAlive enabled : %d\n", _clientList.count()+1, _maxClient, _currentClient->_id, (_currentClient->_client).status(), (_currentClient->_client).available(), (_currentClient->_client).isKeepAliveEnabled());
 		    #endif
 	    }
 
@@ -151,7 +166,7 @@ class TCPServer
       {
         _currentClient->closeConnection();
         #ifdef DEBUG_TCPS
-        Serial.print("TCPServer : Client was discarded : ");Serial.println(_currentClient->_id);
+        Serial.printf("TCPServer : Client was discarded : %u\n", _currentClient->_id);
         #endif
         delete _currentClient;
         _currentClient = NULL;
@@ -167,9 +182,8 @@ class TCPServer
     {
       if(client->_dataSize > 0 && ((char) client->_data[0] != '\r' && (char) client->_data[0] != '\n'))
       {
-		Serial.printf("Client --> %u : #%s#\r\n", client->_id, (char *)client->_data);
+        Serial.printf("Client --> %u : #%s#\r\n", client->_id, (char *)client->_data);
-	  }
+      }
-    
       client->freeDataBuffer(client->_dataSize);
     }
     
@@ -183,15 +197,15 @@ class TCPServer
         if(_clientList.getRef(i)->_id == freeId)
         {
           freeId++;
-          i = -1;
+          i = -1; //We start from 0 again
         }
       }
       return freeId;
     }
     
 	  boolean _serverStarted;
-    uint8_t _maxClient;
+    uint8_t _maxClient, _TKACount = 0;
-    uint16_t _clientDataBufferSize;
+    uint16_t _clientDataBufferSize, _TKAIdleSec = 0, _TKAIntvSec = 0;
     WiFiServer _wifiServer;
     T *_currentClient; //current client to be processed
     List<T> _clientList;