v1.6.0 to save heap when sending large data

### Releases v1.6.0 1. Support using `CString` to save heap to send `very large data`. Check [request->send(200, textPlainStr, jsonChartDataCharStr); - Without using String Class - to save heap #8](khoih-prog/Portenta_H7_AsyncWebServer#8) and [All memmove() removed - string no longer destroyed #11](khoih-prog/Portenta_H7_AsyncWebServer#11) 2. Add multiple examples to demo the new feature
khoih-prog · Oct 6, 2022 · 2f284d9 · 2f284d9
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diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -1,21 +1,23 @@
-## Contributing to AsyncWebServer_Ethernet
+## Contributing to AsyncWebServer_Teensy41
 
 ### Reporting Bugs
 
-Please report bugs in AsyncWebServer_Ethernet if you find them.
+Please report bugs in AsyncWebServer_Teensy41 if you find them.
 
 However, before reporting a bug please check through the following:
 
-* [Existing Open Issues](https://github.com/khoih-prog/AsyncWebServer_Ethernet/issues) - someone might have already encountered this.
+* [Existing Open Issues](https://github.com/khoih-prog/AsyncWebServer_Teensy41/issues) - someone might have already encountered this.
 
-If you don't find anything, please [open a new issue](https://github.com/khoih-prog/AsyncWebServer_Ethernet/issues/new).
+If you don't find anything, please [open a new issue](https://github.com/khoih-prog/AsyncWebServer_Teensy41/issues/new).
 
 ### How to submit a bug report
 
 Please ensure to specify the following:
 
 * Arduino IDE version (e.g. 1.8.19) or Platform.io version
-* Board Core Version (e.g. ESP8266 core v3.0.2)
+* `Teensyduino` Core Version (e.g. `Teensyduino core v1.57`)
+* `QNEthernet` library version (e.g. `QNEthernet v0.15.0`)
+* Board type and relevant info
 * 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:
@@ -27,26 +29,25 @@ Please ensure to specify the following:
 
 ```
 Arduino IDE version: 1.8.19
-ESP8266_NODEMCU_ESP12E using ESP8266_W5500 Ethernet
-ESP8266 core v3.0.2
+Teensyduino core v1.57
+Teensy 4.1 using QNEthernet v0.15.0
 OS: Ubuntu 20.04 LTS
 Linux xy-Inspiron-3593 5.15.0-48-generic #54~20.04.1-Ubuntu SMP Thu Sep 1 16:17:26 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
-I encountered a crash while using this library
+I encountered an endless loop while using this library
 
 Steps to reproduce:
 1. ...
 2. ...
 3. ...
 4. ...
 ```
-
 ### Sending Feature Requests
 
 Feel free to post feature requests. It's helpful if you can explain exactly why the feature would be useful.
 
-There are usually some outstanding feature requests in the [existing issues list](https://github.com/khoih-prog/AsyncWebServer_Ethernet/issues?q=is%3Aopen+is%3Aissue+label%3Aenhancement), feel free to add comments to them.
+There are usually some outstanding feature requests in the [existing issues list](https://github.com/khoih-prog/AsyncWebServer_Teensy41/issues?q=is%3Aopen+is%3Aissue+label%3Aenhancement), feel free to add comments to them.
 
 ### Sending Pull Requests
 

diff --git a/changelog.md b/changelog.md
@@ -1,16 +1,19 @@
-# AsyncWebServer_Ethernet
+# AsyncWebServer_Teensy41
 
-[![arduino-library-badge](https://www.ardu-badge.com/badge/AsyncWebServer_Ethernet.svg?)](https://www.ardu-badge.com/AsyncWebServer_Ethernet)
-[![GitHub release](https://img.shields.io/github/release/khoih-prog/AsyncWebServer_Ethernet.svg)](https://github.com/khoih-prog/AsyncWebServer_Ethernet/releases)
+[![arduino-library-badge](https://www.ardu-badge.com/badge/AsyncWebServer_Teensy41.svg?)](https://www.ardu-badge.com/AsyncWebServer_Teensy41)
+[![GitHub release](https://img.shields.io/github/release/khoih-prog/AsyncWebServer_Teensy41.svg)](https://github.com/khoih-prog/AsyncWebServer_Teensy41/releases)
+[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/AsyncWebServer_Teensy41/blob/master/LICENSE)
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](#Contributing)
-[![GitHub issues](https://img.shields.io/github/issues/khoih-prog/AsyncWebServer_Ethernet.svg)](http://github.com/khoih-prog/AsyncWebServer_Ethernet/issues)
+[![GitHub issues](https://img.shields.io/github/issues/khoih-prog/AsyncWebServer_Teensy41.svg)](http://github.com/khoih-prog/AsyncWebServer_Teensy41/issues)
 
 ---
 ---
 
 ## Table of contents
 
+* [Table of contents](#table-of-contents)
 * [Changelog](#changelog)
+  * [Releases v1.6.0](#releases-v160)
   * [Releases v1.5.0](#releases-v150)
   * [Releases v1.4.1](#releases-v141)
 
@@ -19,16 +22,20 @@
 
 ## Changelog
 
-#### Releases v1.5.0
+### Releases v1.6.0
 
 1. Support using `CString` to save heap to send `very large data`. Check [request->send(200, textPlainStr, jsonChartDataCharStr); - Without using String Class - to save heap #8](https://github.com/khoih-prog/Portenta_H7_AsyncWebServer/pull/8) and [All memmove() removed - string no longer destroyed #11](https://github.com/khoih-prog/Portenta_H7_AsyncWebServer/pull/11)
 2. Add multiple examples to demo the new feature
 
-#### Releases v1.4.1
+### Releases v1.5.0
+
+1. Fix issue with slow browsers or network. Check [Target stops responding after variable time when using Firefox on Windows 10 #3](https://github.com/khoih-prog/AsyncWebServer_RP2040W/issues/3)
+2. Add functions and example `Async_AdvancedWebServer_favicon` to support `favicon.ico`
+
+### Releases v1.4.1
+
+1. Initial porting and coding for **Teensy 4.1 using built-in QNEthernet**
+2. Bump up version to v1.4.1 to sync with [AsyncWebServer_STM32](https://github.com/khoih-prog/AsyncWebServer_STM32) v1.4.1
 
-1. Initial coding to port [ESPAsyncWebServer](https://github.com/me-no-dev/ESPAsyncWebServer) to ESP8266 boards using W5x00 / ENC28J60 Ethernet.
-2. Add more examples.
-3. Add debugging features.
-4. Bump up to v1.4.1 to sync with [AsyncWebServer_WT32_ETH01 v1.4.1](https://github.com/khoih-prog/AsyncWebServer_WT32_ETH01).
 
 
diff --git a/examples/AsyncMultiWebServer/AsyncMultiWebServer.ino b/examples/AsyncMultiWebServer/AsyncMultiWebServer.ino
@@ -1,22 +1,49 @@
 /****************************************************************************************************************************
-  AsyncMultiWebServer.h
+  AsyncMultiWebServer.h - Dead simple AsyncWebServer for Teensy41 QNEthernet
   
-  For ESP8266 using W5x00/ENC8266 Ethernet
-   
-  AsyncWebServer_Ethernet is a library for the Ethernet with lwIP_5100, lwIP_5500 or lwIP_enc28j60 library
+  For Teensy41 with QNEthernet
+  
+  AsyncWebServer_Teensy41 is a library for the Teensy41 with QNEthernet
   
   Based on and modified from ESPAsyncWebServer (https://github.com/me-no-dev/ESPAsyncWebServer)
-  Built by Khoi Hoang https://github.com/khoih-prog/AsyncWebServer_Ethernet
+  Built by Khoi Hoang https://github.com/khoih-prog/AsyncWebServer_Teensy41
   Licensed under GPLv3 license
  *****************************************************************************************************************************/
 
-#include "defines.h"
+#if !( defined(CORE_TEENSY) && defined(__IMXRT1062__) && defined(ARDUINO_TEENSY41) )
+  #error Only Teensy 4.1 supported
+#endif
+
+// Debug Level from 0 to 4
+#define _TEENSY41_ASYNC_TCP_LOGLEVEL_       1
+#define _AWS_TEENSY41_LOGLEVEL_             1
+
+#define SHIELD_TYPE     "Teensy4.1 QNEthernet"
+
+#if (_AWS_TEENSY41_LOGLEVEL_ > 3)
+  #warning Using QNEthernet lib for Teensy 4.1. Must also use Teensy Packages Patch or error
+#endif
+
+#define USING_DHCP            true
+//#define USING_DHCP            false
+
+#if !USING_DHCP
+  // Set the static IP address to use if the DHCP fails to assign
+  IPAddress myIP(192, 168, 2, 222);
+  IPAddress myNetmask(255, 255, 255, 0);
+  IPAddress myGW(192, 168, 2, 1);
+  //IPAddress mydnsServer(192, 168, 2, 1);
+  IPAddress mydnsServer(8, 8, 8, 8);
+#endif
+
+#include "QNEthernet.h"       // https://github.com/ssilverman/QNEthernet
+using namespace qindesign::network;
 
-#include <AsyncWebServer_Ethernet.h>
+#include <AsyncWebServer_Teensy41.h>
 
 unsigned int    analogReadPin []  = { 12, 13, 14 };
 
-#define BUFFER_SIZE       512
+#define BUFFER_SIZE       500
 
 #define HTTP_PORT1        8080
 #define HTTP_PORT2        8081
@@ -55,7 +82,7 @@ body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Col
 </head>\
 <body>\
 <h1>Hello from %s</h1>\
-<h2>running AsyncWebServer_Ethernet</h2>\
+<h2>running AsyncWebServer_Teensy41</h2>\
 <h3>on %s</h3>\
 <h3>Uptime: %d d %02d:%02d:%02d</h3>\
 </body>\
@@ -101,63 +128,56 @@ void handleNotFound(AsyncWebServerRequest * request)
   request->send(404, F("text/plain"), message);
 }
 
-void initEthernet()
+void setup()
 {
-  SPI.begin();
-  SPI.setClockDivider(SPI_CLOCK_DIV4);
-  SPI.setBitOrder(MSBFIRST);
-  SPI.setDataMode(SPI_MODE0);
+  Serial.begin(115200);
+  while (!Serial && millis() < 5000);
 
-#if !USING_DHCP
-  eth.config(localIP, gateway, netMask, gateway);
+  delay(200);
+
+  Serial.print("\nStart AsyncMultiWebServer on "); Serial.print(BOARD_NAME);
+  Serial.print(" with "); Serial.println(SHIELD_TYPE);
+  Serial.println(ASYNC_WEBSERVER_TEENSY41_VERSION);
+
+  delay(500);
+
+#if USING_DHCP
+  // Start the Ethernet connection, using DHCP
+  Serial.print("Initialize Ethernet using DHCP => ");
+  Ethernet.begin();
+#else
+  // Start the Ethernet connection, using static IP
+  Serial.print("Initialize Ethernet using static IP => ");
+  Ethernet.begin(myIP, myNetmask, myGW);
+  Ethernet.setDNSServerIP(mydnsServer);
 #endif
-
-  eth.setDefault();
-
-  if (!eth.begin()) 
+
+  if (!Ethernet.waitForLocalIP(5000))
   {
-    Serial.println("No Ethernet hardware ... Stop here");
-    
-    while (true) 
+    Serial.println(F("Failed to configure Ethernet"));
+
+    if (!Ethernet.linkStatus())
     {
-      delay(1000);
+      Serial.println(F("Ethernet cable is not connected."));
     }
-  } 
-  else 
-  {
-    Serial.print("Connecting to network : ");
-
-    while (!eth.connected()) 
+
+    // Stay here forever
+    while (true)
     {
-      Serial.print(".");
-      delay(1000);
+      delay(1);
     }
   }
-
-  Serial.println();
+  else
+  {
+    Serial.print(F("Connected! IP address:")); Serial.println(Ethernet.localIP());
+  }
 
-#if USING_DHCP  
-  Serial.print("Ethernet DHCP IP address: ");
-#else
-  Serial.print("Ethernet Static IP address: ");
+#if USING_DHCP
+  delay(1000);
+#else  
+  delay(2000);
 #endif
-
-  Serial.println(eth.localIP());
-}
 
-void setup()
-{
-  Serial.begin(115200);
-  while (!Serial && millis() < 5000);
-
-  delay(200);
-
-  Serial.print("\nStart AsyncMultiWebServer on "); Serial.print(BOARD_NAME);
-  Serial.print(" with "); Serial.println(SHIELD_TYPE);
-  Serial.println(ASYNC_WEBSERVER_ETHERNET_VERSION);
-
-  initEthernet();
-
   for (serverIndex = 0; serverIndex < NUM_SERVERS; serverIndex++)
   {
     multiServer[serverIndex] = new AsyncWebServer(http_port[serverIndex]);