v1.6.0 to fix memory leak bugs, etc.

### Release v1.6.0

1. Fix memory leak bugs. Check [memory leak on 'server_version' #17](#17) and [memory leak on MySQL_Connection.MySQL_Packet.buffer #18](#18)
2. Optimize library code by using `reference-passing` instead of `value-passing`
3. Update RP2040 Ethernet-related examples to use the same SS/CS pin GP17 for [ArduinoCore-mbed mbed_rp2040 core](https://github.com/arduino/ArduinoCore-mbed) as [arduino-pico rp2040 core](https://github.com/earlephilhower/arduino-pico)
4. Update `Packages' Patches`

Author: khoih-prog

CONTRIBUTING.md

@@ -14,8 +14,8 @@ If you don't find anything, please [open a new issue](https://github.com/khoih-p
 
 Please ensure to specify the following:
 
-* Arduino IDE version (e.g. 1.8.16) or Platform.io version
-* Board Core Version (e.g. Arduino SAMDUE core v1.6.12, ESP8266 core v3.0.2, ArduinoCore-mbed v2.6.1, etc.)
+* Arduino IDE version (e.g. 1.8.19) or Platform.io version
+* Board Core Version (e.g. Arduino SAMDUE core v1.6.12, ESP32 core v2.0.2, ESP8266 core v3.0.2, ArduinoCore-mbed v2.7.2, etc.)
 * Contextual information (e.g. what you were trying to achieve)
 * Simplest possible steps to reproduce
 * Anything that might be relevant in your opinion, such as:
@@ -26,11 +26,11 @@ Please ensure to specify the following:
 ### Example
 
 ```
-Arduino IDE version: 1.8.16
+Arduino IDE version: 1.8.19
 RASPBERRY_PI_PICO board
-ArduinoCore-mbed v2.6.1
+ArduinoCore-mbed v2.7.2
 OS: Ubuntu 20.04 LTS
-Linux xy-Inspiron-3593 5.4.0-91-generic #102-Ubuntu SMP Fri Nov 5 16:31:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
+Linux xy-Inspiron-3593 5.13.0-35-generic #40~20.04.1-Ubuntu SMP Mon Mar 7 09:18:32 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
 I encountered a crash while trying to use the Timer Interrupt.

README.md

@@ -12,6 +12,7 @@
 ## Table of Contents
 
 * [Changelog](#changelog)
+  * [Release v1.6.0](#release-v160)
   * [Release v1.5.2](#release-v152)
   * [Release v1.5.1](#release-v151)
   * [Major Release v1.5.0](#major-release-v150)
@@ -30,6 +31,13 @@
 
 ## Changelog
 
+### Release v1.6.0
+
+1. Fix memory leak bugs. Check [memory leak on 'server_version' #17](https://github.com/khoih-prog/MySQL_MariaDB_Generic/issues/17) and [memory leak on MySQL_Connection.MySQL_Packet.buffer #18](https://github.com/khoih-prog/MySQL_MariaDB_Generic/issues/18)
+2. Optimize library code by using `reference-passing` instead of `value-passing`
+3. Update RP2040 Ethernet-related examples to use the same SS/CS pin GP17 for [ArduinoCore-mbed mbed_rp2040 core](https://github.com/arduino/ArduinoCore-mbed) as [arduino-pico rp2040 core](https://github.com/earlephilhower/arduino-pico)
+4. Update `Packages' Patches`
+
 ### Release v1.5.2
 
 1. Auto detect ESP32 core version.

changelog.md

@@ -22,6 +22,7 @@ _state	KEYWORD1
 # MySQL_Generic_Connection
 ##############################
 
+SQL_IPAddressToString	KEYWORD2
 connect	KEYWORD2
 connectNonBlocking  KEYWORD2
 connected	KEYWORD2
@@ -85,3 +86,35 @@ READ_COLS	KEYWORD3
 NOT_CONNECTED	KEYWORD3
 sha1InitState	KEYWORD3
 
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+MYSQL_GENERIC_VERSION	LITERAL1
+MYSQL_MARIADB_GENERIC_VERSION  LITERAL1
+MYSQL_MARIADB_GENERIC_VERSION_MAJOR  LITERAL1
+MYSQL_MARIADB_GENERIC_VERSION_MINOR  LITERAL1
+MYSQL_MARIADB_GENERIC_VERSION_PATCH  LITERAL1
+MYSQL_MARIADB_GENERIC_VERSION_INT  LITERAL1
+
+MYSQL_OK_PACKET	LITERAL1
+MYSQL_EOF_PACKET	LITERAL1
+MYSQL_ERROR_PACKET	LITERAL1
+
+MAX_TRANSMISSION_UNIT	LITERAL1
+
+MYSQL_DATA_TIMEOUT	LITERAL1
+MYSQL_WAIT_INTERVAL	LITERAL1
+
+HASH_LENGTH	LITERAL1
+BLOCK_LENGTH	LITERAL1
+
+MYSQL_SHA1_K0	LITERAL1
+MYSQL_SHA1_K20	LITERAL1
+MYSQL_SHA1_K40	LITERAL1
+MYSQL_SHA1_K60	LITERAL1
+
+HMAC_IPAD	LITERAL1
+HMAC_OPAD	LITERAL1
+
+

keywords.txt

@@ -1,6 +1,6 @@
 {
   "name": "MySQL_MariaDB_Generic",
-  "version": "1.5.2",
+  "version": "1.6.0",
   "keywords": "Communication, Database, Storage, MySQL, MariaDB, wt32-eth01, Teensy, SAMD, nRF52, W5x00, Ethernet, wifi, wifinina, lan8720, rp2040, nano-33-iot, nano-rp2040-connect, QNEthernet, native-ethernet, Portenta-H7, SAM DUE, ENC28J60, rpi-pico, Arduino, AVR",
   "description": "Connects to MySQL or MariaDB using ESP8266/ESP32, WT32_ETH01 (ESP32 + LAN8720A), nRF52, SAMD21/SAMD51, STM32F/L/H/G/WB/MP1, Teensy, SAM DUE, Mega, RP2040-based boards, Portenta_H7, etc. with W5x00, ENC28J60 Ethernet, Teensy 4.1 NativeEthernet/QNEthernet, WiFiNINA modules/shields or Portenta_H7 WiFi/Ethernet. W5x00 can use Ethernet, EthernetLarge, Ethernet2 or Ethernet3 library. ENC28J60 can use either EthernetENC or UIPEthernet Library. Now accepting server's hostname, besides IPAddress",
   "authors": [
@@ -34,7 +34,7 @@
     {
       "owner": "khoih-prog",
       "name": "WiFiNINA_Generic",
-      "version": "^1.8.14-1",
+      "version": "^1.8.14-3",
       "platforms": ["*"]
     },
     {
@@ -46,7 +46,7 @@
     {
       "owner": "khoih-prog",
       "name": "ESP8266_AT_WebServer",
-      "version": "^1.4.0",
+      "version": "^1.5.3",
       "platforms": ["*"]
     },
     {
@@ -70,13 +70,13 @@
     {
       "owner": "jandrassy",
       "name": "EthernetENC",
-      "version": ">=2.0.1",
+      "version": ">=2.0.2",
       "platforms": ["*"]
     },
     {
       "owner": "jandrassy",
       "name": "WiFiEspAT",
-      "version": ">=1.3.1",
+      "version": ">=1.3.2",
       "platforms": ["*"]
     },
     {
@@ -104,8 +104,10 @@
       "platforms": ["*"]
     },
     {
+      "owner": "ssilverman",
       "name": "QNEthernet",
-      "version": "https://github.com/ssilverman/QNEthernet"
+      "version": ">=0.13.0",
+      "platforms": ["teensy"]
     }
   ],
   "license": "MIT",

library.json

@@ -1,5 +1,5 @@
 name=MySQL_MariaDB_Generic
-version=1.5.2
+version=1.6.0
 author=Dr. Charles Bell <[email protected]>, Khoi Hoang <[email protected]>
 maintainer=Khoi Hoang <[email protected]>
 sentence=Connects to MySQL or MariaDB using ESP8266/ESP32, WT32_ETH01 (ESP32 + LAN8720A), nRF52, SAMD21/SAMD51, STM32F/L/H/G/WB/MP1, Teensy, SAM DUE, Mega, RP2040-based boards, Portenta_H7, etc. with W5x00, ENC28J60 Ethernet, Teensy 4.1 NativeEthernet/QNEthernet, WiFiNINA modules/shields or Portenta_H7 WiFi/Ethernet. W5x00 can use Ethernet, EthernetLarge, Ethernet2 or Ethernet3 library. ENC28J60 can use either EthernetENC or UIPEthernet Library.

library.properties

@@ -51,34 +51,34 @@ lib_compat_mode = strict
 
 lib_deps =  
 ; PlatformIO 4.x
-  WiFiNINA_Generic@~1.8.13
-  WebServer_WT32_ETH01@~1.2.0
-  Ethernet@~2.0.0
-  EthernetLarge@~2.0.0
-  Ethernet2@~1.0.4
-  Ethernet3@~1.5.5
-  EthernetENC@~2.0.0
-  UIPEthernet@~2.0.8
-  WiFiEspAT@~1.3.1
-  ESP8266_AT_WebServer@~1.4.0
-  https://github.com/ssilverman/QNEthernet  
+;  WiFiNINA_Generic@~1.8.14-3
+;  WebServer_WT32_ETH01@~1.4.1
+;  Ethernet@~2.0.0
+;  EthernetLarge@~2.0.0
+;  Ethernet2@~1.0.4
+;  Ethernet3@~1.5.5
+;  EthernetENC@~2.0.0
+;  UIPEthernet@~2.0.8
+;  WiFiEspAT@~1.3.2
+;  ESP8266_AT_WebServer@~1.5.3
+;  QNEthernet@>=0.13.0
 ;  STM32duino STM32Ethernet@~1.2.0
 ;  STM32duino LwIP@~2.1.2
 ;
 ; PlatformIO 5.x  
-; khoih-prog/WiFiNINA_Generic@~1.8.13
-; khoih-prog/WebServer_WT32_ETH01@~1.2.0
-; PaulStoffregen/Ethernet@~2.0.0
-; PaulStoffregen/EthernetLarge@~2.0.0
-; adafruit/Ethernet2@~1.0.4
-; sstaub/Ethernet3@~1.5.5
-; jandrassy/EthernetENC@~2.0.0
-; UIPEthernet/UIPEthernet@~2.0.8
-; jandrassy/WiFiEspAT@~1.3.1
-; khoih-prog/ESP8266_AT_WebServer@~1.4.0
+ khoih-prog/WiFiNINA_Generic@~1.8.14-3
+ khoih-prog/WebServer_WT32_ETH01@~1.4.1
+ PaulStoffregen/Ethernet@~2.0.0
+ PaulStoffregen/EthernetLarge@~2.0.0
+ adafruit/Ethernet2@~1.0.4
+ sstaub/Ethernet3@~1.5.5
+ jandrassy/EthernetENC@~2.0.0
+ UIPEthernet/UIPEthernet@~2.0.8
+ jandrassy/WiFiEspAT@~1.3.2
+ khoih-prog/ESP8266_AT_WebServer@~1.5.3
 ; stm32duino/STM32duino LwIP@~2.1.2
 ; stm32duino/STM32duino STM32Ethernet@~1.2.0
-; https://github.com/ssilverman/QNEthernet
+ ssilverman/QNEthernet@>=0.13.0
 
 
 build_flags =

platformio/platformio.ini

@@ -11,7 +11,7 @@
   
   Built by Khoi Hoang https://github.com/khoih-prog/MySQL_MariaDB_Generic
   Licensed under MIT license
-  Version: 1.5.2
+  Version: 1.6.0
 
   Version Modified By   Date      Comments
   ------- -----------  ---------- -----------
@@ -28,6 +28,7 @@
   1.5.0   K Hoang      17/09/2021 Add support to Portenta_H7, using either WiFi or Vision-shield Ethernet
   1.5.1   K Hoang      10/10/2021 Update `platform.ini` and `library.json`
   1.5.2   K Hoang      01/12/2021 Auto detect ESP32 core for LittleFS. Fix bug in examples for WT32_ETH01
+  1.6.0   K Hoang      10/03/2022 Fix memory leak bug. Optimize code.
  **********************************************************************************************************************************/
 
 #ifndef MYSQL_GENERIC_H

src/MySQL_Generic.h

@@ -11,7 +11,7 @@
   
   Built by Khoi Hoang https://github.com/khoih-prog/MySQL_MariaDB_Generic
   Licensed under MIT license
-  Version: 1.5.2
+  Version: 1.6.0
 
   Version Modified By   Date      Comments
   ------- -----------  ---------- -----------
@@ -28,6 +28,7 @@
   1.5.0   K Hoang      17/09/2021 Add support to Portenta_H7, using either WiFi or Vision-shield Ethernet
   1.5.1   K Hoang      10/10/2021 Update `platform.ini` and `library.json`
   1.5.2   K Hoang      01/12/2021 Auto detect ESP32 core for LittleFS. Fix bug in examples for WT32_ETH01
+  1.6.0   K Hoang      10/03/2022 Fix memory leak bug. Optimize code.
  **********************************************************************************************************************************/
 
 /*********************************************************************************************************************************
@@ -64,14 +65,24 @@ class MySQL_Connection : public MySQL_Packet
   public:
     MySQL_Connection(Client *client_instance) : MySQL_Packet(client_instance) {}
 
-    bool connect(IPAddress server, int port, char *user, char *password, char *db = NULL);
+    virtual ~MySQL_Connection()
+    {
+    	if (server_version)
+			{
+				MYSQL_LOGDEBUG("Free server_version");
+				
+				free(server_version);
+			}
+    };
+    
+    bool connect(const IPAddress& server, const uint16_t& port, char *user, char *password, char *db = NULL);
 
-    Connection_Result connectNonBlocking(IPAddress server, int port, char *user, char *password, char *db = NULL);
+    Connection_Result connectNonBlocking(const IPAddress& server, const uint16_t& port, char *user, char *password, char *db = NULL);
 
     // KH, add to use hostname. from v1.4.0
-    bool connect(const char *hostname, int port, char *user, char *password, char *db = NULL);
+    bool connect(const char *hostname, const uint16_t& port, char *user, char *password, char *db = NULL);
 
-    Connection_Result connectNonBlocking(const char *hostname, int port, char *user, char *password, char *db = NULL);
+    Connection_Result connectNonBlocking(const char *hostname, const uint16_t& port, char *user, char *password, char *db = NULL);
     ////////
 
     int connected()