AsyncHTTPRequest_ESP32_Ethernet Library

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Table of Contents

• Why do we need this AsyncHTTPRequest_ESP32_Ethernet library
  • Features
  • Supports
  • Principles of operation
  • Currently supported Boards
  • To-be supported Boards
• Changelog
• Prerequisites
• Installation
  • Use Arduino Library Manager
  • Manual Install
  • VS Code & PlatformIO
• Note for Platform IO using ESP32 LittleFS
• HOWTO Fix Multiple Definitions Linker Error
• Note for Platform IO using ESP32 LittleFS
• HOWTO Use analogRead() with ESP32 running WiFi and/or BlueTooth (BT/BLE)
  • 1. ESP32 has 2 ADCs, named ADC1 and ADC2
  • 2. ESP32 ADCs functions
  • 3. ESP32 WiFi uses ADC2 for WiFi functions
• How to connect W5500, W6100 or ENC28J60 to ESP32_S2/S3/C3
• Examples
  • For WT32_ETH01
    • 1. AsyncHTTPRequest_WT32_ETH01
    • 2. AsyncHTTPMultiRequests_WT32_ETH01
  • For ESP32_ENC
    • 1. AsyncHTTPRequest_ESP32_ENC
    • 2. AsyncHTTPMultiRequests_ESP32_ENC
  • For ESP32_W5500
    • 1. AsyncHTTPRequest_ESP32_W5500
    • 2. AsyncHTTPMultiRequests_ESP32_W5500
  • For ESP32_W6100
    • 1. AsyncHTTPRequest_ESP32_W6100
    • 2. AsyncHTTPMultiRequests_ESP32_W6100
  • For ESP32_SC_ENC
    • 1. AsyncHTTPRequest_ESP32_SC_ENC
    • 2. AsyncHTTPMultiRequests_ESP32_SC_ENC
  • For ESP32_SC_W5500
    • 1. AsyncHTTPRequest_ESP32_SC_W5500
    • 2. AsyncHTTPMultiRequests_ESP32_SC_W5500
  • For ESP32_SC_W6100
    • 1. AsyncHTTPRequest_ESP32_SC_W6100
    • 2. AsyncHTTPMultiRequests_ESP32_SC_W6100
  • For ESP
    • 1. multiFileProject
• Example AsyncHTTPRequest_ESP32_SC_W5500
• Debug Terminal Output Samples
  • 1. AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S3_DEV with ESP32_S3_W5500
  • 2. AsyncHTTPRequest_ESP32_SC_ENC on ESP32S3_DEV with ESP32_S3_ENC28J60
  • 3. AsyncHTTPRequest_ESP32_W5500 on ESP32_DEV with ESP32_W5500
  • 4. AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S2_DEV with ESP32_S2_W5500
  • 5. AsyncHTTPRequest_ESP32_SC_ENC on ESP32C3_DEV with ESP32_C3_ENC28J60
  • 6. AsyncHTTPRequest_ESP32_W6100 on ESP32_DEV with ESP32_W6100
  • 7. AsyncHTTPRequest_ESP32_SC_W6100 on ESP32S3_DEV with ESP32_S3_W6100
• Debug
• Troubleshooting
• Issues
• TO DO
• DONE
• Contributions and Thanks
• Contributing
• License and credits
• Copyright

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Why do we need this AsyncHTTPRequest_ESP32_Ethernet library

Features

1. Asynchronous HTTP Request library for ESP32/S2/S3/C3, WT32_ETH01 (ESP32 + LAN8720), ESP32 using LwIP ENC28J60, W5500, W6100 or LAN8720.
2. Providing a subset of HTTP.
3. Relying on AsyncTCP
4. Methods similar in format and usage to XmlHTTPrequest in Javascript.

Supports

1. GET, POST, PUT, PATCH, DELETE and HEAD
2. Request and response headers
3. Chunked response
4. Single String response for short (<~5K) responses (heap permitting).
5. Optional onData callback.
6. Optional onReadyStatechange callback.

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Principles of operation

This library adds a simple HTTP layer on top of the AsyncTCP library to facilitate REST communication from a Client to a Server. The paradigm is similar to the XMLHttpRequest in Javascript, employing the notion of a ready-state progression through the transaction request.

Synchronization can be accomplished using callbacks on ready-state change, a callback on data receipt, or simply polling for ready-state change. Data retrieval can be incremental as received, or bulk retrieved when the transaction completes provided there is enough heap to buffer the entire response.

The underlying buffering uses a new xbuf class. It handles both character and binary data. Class xbuf uses a chain of small (64 byte) segments that are allocated and added to the tail as data is added and deallocated from the head as data is read, achieving the same result as a dynamic circular buffer limited only by the size of heap. The xbuf implements indexOf and readUntil functions.

For short transactions, buffer space should not be an issue. In fact, it can be more economical than other methods that use larger fixed length buffers. Data is acked when retrieved by the caller, so there is some limited flow control to limit heap usage for larger transfers.

Request and response headers are handled in the typical fashion.

Chunked responses are recognized and handled transparently.

This library is based on, modified from:

1. Bob Lemaire's asyncHTTPrequest Library

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Currently Supported Boards

1. ESP32 using LwIP ENC28J60, W5500, W6100 or LAN8720

1. ESP32 (ESP32-DEV, etc.)

2. WT32_ETH01 using ESP32-based boards and LAN8720 Ethernet

3. ESP32S3 using LwIP W5500, W6100 or ENC28J60

1. ESP32-S3 (ESP32S3_DEV, ESP32_S3_BOX, UM TINYS3, UM PROS3, UM FEATHERS3, etc.)

4. ESP32S2 using LwIP W5500, W6100 or ENC28J60

1. ESP32-S2 (ESP32S2_DEV, etc.)

5. ESP32C3 using LwIP W5500, W6100 or ENC28J60

1. ESP32-C3 (ESP32C3_DEV, etc.)

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ESP32S3_DEV

ESP32S2_DEV

ESP32C3_DEV

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W6100

FULL_DUPLEX, 100Mbps

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W5500

FULL_DUPLEX, 100Mbps

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ENC28J60

FULL_DUPLEX, 10Mbps

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To-be Supported Boards

1. New ESP32 using LwIP W5500, W6100 or ENC28J60

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Prerequisites

1. Arduino IDE 1.8.19+ for Arduino.
2. ESP32 Core 2.0.6+ for ESP32-based boards. [Latest stable release
3. AsyncTCP v1.1.1+ for ESP32.
4. ESPAsync_WiFiManager library v1.15.1+ for ESP32/ESP8266 using some examples.
5. WebServer_WT32_ETH01 library v1.5.1+ if necessary to use WT32_ETH01 boards. To install, check
6. WebServer_ESP32_ENC library v1.5.3+ if necessary to use ESP32 boards using LwIP ENC28J60 Ethernet. To install, check
7. WebServer_ESP32_W5500 library v1.5.3+ if necessary to use ESP32 boards using LwIP W5500 Ethernet. To install, check
8. WebServer_ESP32_SC_ENC library v1.2.1+ if necessary to use ESP32_S2/S3/C3 boards using LwIP ENC28J60 Ethernet. To install, check
9. WebServer_ESP32_SC_W5500 library v1.2.1+ if necessary to use ESP32_S2/S3/C3 boards using LwIP W5500 Ethernet. To install, check
10. WebServer_ESP32_W6100 library v1.5.3+ if necessary to use ESP32 boards using LwIP W6100 Ethernet. To install, check
11. WebServer_ESP32_SC_W6100 library v1.2.1+ if necessary to use ESP32_S2/S3/C3 boards using LwIP W6100 Ethernet. To install, check

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Installation

Use Arduino Library Manager

The best and easiest way is to use Arduino Library Manager. Search for AsyncHTTPRequest_ESP32_Ethernet, then select / install the latest version. You can also use this link for more detailed instructions.

Manual Install

1. Navigate to AsyncHTTPRequest_ESP32_Ethernet page.
2. Download the latest release AsyncHTTPRequest_ESP32_Ethernet-main.zip.
3. Extract the zip file to AsyncHTTPRequest_ESP32_Ethernet-main directory
4. Copy the whole AsyncHTTPRequest_ESP32_Ethernet-main folder to Arduino libraries' directory such as ~/Arduino/libraries/.

VS Code & PlatformIO

1. Install VS Code
2. Install PlatformIO
3. Install AsyncHTTPRequest_ESP32_Ethernet library by using Library Manager. Search for AsyncHTTPRequest_ESP32_Ethernet in Platform.io Author's Libraries
4. Use included platformio.ini file from examples to ensure that all dependent libraries will installed automatically. Please visit documentation for the other options and examples at Project Configuration File

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Note for Platform IO using ESP32 LittleFS

In Platform IO, to fix the error when using LittleFS_esp32 v1.0.6 for ESP32-based boards with ESP32 core v1.0.4- (ESP-IDF v3.2-), uncomment the following line

from

//#define CONFIG_LITTLEFS_FOR_IDF_3_2   /* For old IDF - like in release 1.0.4 */

to

#define CONFIG_LITTLEFS_FOR_IDF_3_2   /* For old IDF - like in release 1.0.4 */

It's advisable to use the latest LittleFS_esp32 v1.0.5+ to avoid the issue.

Thanks to Roshan to report the issue in Error esp_littlefs.c 'utime_p'

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HOWTO Fix Multiple Definitions Linker Error

The current library implementation, using xyz-Impl.h instead of standard xyz.cpp, possibly creates certain Multiple Definitions Linker error in certain use cases.

You can include this .hpp file

// Can be included as many times as necessary, without `Multiple Definitions` Linker Error
#include "AsyncHTTPRequest_ESP32_Ethernet.hpp"     //https://github.com/khoih-prog/AsyncHTTPRequest_ESP32_Ethernet

in many files. But be sure to use the following .h file in just 1 .h, .cpp or .ino file, which must not be included in any other file, to avoid Multiple Definitions Linker Error

// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
#include "AsyncHTTPRequest_ESP32_Ethernet.h"           //https://github.com/khoih-prog/AsyncHTTPRequest_ESP32_Ethernet

Check the new multiFileProject example for a HOWTO demo.

Have a look at the discussion in Different behaviour using the src_cpp or src_h lib #80

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Note for Platform IO using ESP32 LittleFS

In Platform IO, to fix the error when using LittleFS_esp32 v1.0 for ESP32-based boards with ESP32 core v1.0.4- (ESP-IDF v3.2-), uncomment the following line

from

//#define CONFIG_LITTLEFS_FOR_IDF_3_2   /* For old IDF - like in release 1.0.4 */

to

#define CONFIG_LITTLEFS_FOR_IDF_3_2   /* For old IDF - like in release 1.0.4 */

It's advisable to use the latest LittleFS_esp32 v1.0.5+ to avoid the issue.

Thanks to Roshan to report the issue in Error esp_littlefs.c 'utime_p'

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HOWTO Use analogRead() with ESP32 running WiFi and/or BlueTooth (BT/BLE)

Please have a look at ESP_WiFiManager Issue 39: Not able to read analog port when using the autoconnect example to have more detailed description and solution of the issue.

1. ESP32 has 2 ADCs, named ADC1 and ADC2

2. ESP32 ADCs functions

• ADC1 controls ADC function for pins GPIO32-GPIO39
• ADC2 controls ADC function for pins GPIO0, 2, 4, 12-15, 25-27

3.. ESP32 WiFi uses ADC2 for WiFi functions

Look in file adc_common.c

In ADC2, there're two locks used for different cases:

1. lock shared with app and Wi-Fi: ESP32: When Wi-Fi using the ADC2, we assume it will never stop, so app checks the lock and returns immediately if failed. ESP32S2: The controller's control over the ADC is determined by the arbiter. There is no need to control by lock.

2. lock shared between tasks: when several tasks sharing the ADC2, we want to guarantee all the requests will be handled. Since conversions are short (about 31us), app returns the lock very soon, we use a spinlock to stand there waiting to do conversions one by one.

adc2_spinlock should be acquired first, then adc2_wifi_lock or rtc_spinlock.

• In order to use ADC2 for other functions, we have to acquire complicated firmware locks and very difficult to do
• So, it's not advisable to use ADC2 with WiFi/BlueTooth (BT/BLE).
• Use ADC1, and pins GPIO32-GPIO39
• If somehow it's a must to use those pins serviced by ADC2 (GPIO0, 2, 4, 12, 13, 14, 15, 25, 26 and 27), use the fix mentioned at the end of ESP_WiFiManager Issue 39: Not able to read analog port when using the autoconnect example to work with ESP32 WiFi/BlueTooth (BT/BLE).

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How to connect W5500, W6100 or ENC28J60 to ESP32_S2/S3/C3

W6100

FULL_DUPLEX, 100Mbps

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W5500

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ENC28J60

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ESP32S3_DEV

You can change the INT pin to another one. Default is GPIO4

// Must connect INT to GPIOxx or not working
#define INT_GPIO            4

W5500, W6100 or ENC28J60	<--->	ESP32_S3
MOSI	<--->	GPIO11
MISO	<--->	GPIO13
SCK	<--->	GPIO12
CS/SS	<--->	GPIO10
INT	<--->	GPIO4
RST	<--->	RST
GND	<--->	GND
3.3V	<--->	3.3V

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ESP32S2_DEV

You can change the INT pin to another one. Default is GPIO4

// Must connect INT to GPIOxx or not working
#define INT_GPIO            4

W5500, W6100 or ENC28J60	<--->	ESP32_S2
MOSI	<--->	GPIO35
MISO	<--->	GPIO37
SCK	<--->	GPIO36
CS/SS	<--->	GPIO34
INT	<--->	GPIO4
RST	<--->	RST
GND	<--->	GND
3.3V	<--->	3.3V

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ESP32C3_DEV

You can change the INT pin to another one. Default is GPIO4

// Must connect INT to GPIOxx or not working
#define INT_GPIO            10

W5500, W6100 or ENC28J60	<--->	ESP32_C3
MOSI	<--->	GPIO6
MISO	<--->	GPIO5
SCK	<--->	GPIO4
CS/SS	<--->	GPIO7
INT	<--->	GPIO10
RST	<--->	RST
GND	<--->	GND
3.3V	<--->	3.3V

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Examples

For WT32_ETH01

1. AsyncHTTPRequest_WT32_ETH01
2. AsyncHTTPMultiRequests_WT32_ETH01

For ESP32_ENC

1. AsyncHTTPRequest_ESP32_ENC
2. AsyncHTTPMultiRequests_ESP32_ENC

For ESP32_W5500

1. AsyncHTTPRequest_ESP32_W5500
2. AsyncHTTPMultiRequests_ESP32_W5500

For ESP32_W6100

1. AsyncHTTPRequest_ESP32_W6100
2. AsyncHTTPMultiRequests_ESP32_W6100

For ESP32_SC_ENC

1. AsyncHTTPRequest_ESP32_SC_ENC
2. AsyncHTTPMultiRequests_ESP32_SC_ENC

For ESP32_SC_W5500

1. AsyncHTTPRequest_ESP32_SC_W5500
2. AsyncHTTPMultiRequests_ESP32_SC_W5500

For ESP32_SC_W6100

1. AsyncHTTPRequest_ESP32_SC_W6100
2. AsyncHTTPMultiRequests_ESP32_SC_W6100

For ESP

1. multiFileProject

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Example AsyncHTTPRequest_ESP32_SC_W5500

AsyncHTTPRequest_ESP32_Ethernet/examples/ESP32_SC_W5500/AsyncHTTPRequest_ESP32_SC_W5500/AsyncHTTPRequest_ESP32_SC_W5500.ino

Lines 43 to 284 in 3272f5f

	#if !( defined(ESP32) )
	#error This code is intended to run on the ESP32 platform! Please check your Tools->Board setting.
	#endif
	// Level from 0-4
	#define ASYNC_HTTP_DEBUG_PORT Serial
	#define _ASYNC_HTTP_LOGLEVEL_ 1
	#define _ETHERNET_WEBSERVER_LOGLEVEL_ 1
	// 300s = 5 minutes to not flooding
	#define HTTP_REQUEST_INTERVAL 60 //300
	// 10s
	#define HEARTBEAT_INTERVAL 10
	//////////////////////////////////////////////////////////
	// For ESP32-S3
	// Optional values to override default settings
	//#define ETH_SPI_HOST SPI2_HOST
	//#define SPI_CLOCK_MHZ 8
	// Must connect INT to GPIOxx or not working
	//#define INT_GPIO 4
	//#define MISO_GPIO 13
	//#define MOSI_GPIO 11
	//#define SCK_GPIO 12
	//#define CS_GPIO 10
	// For ESP32_C3
	// Optional values to override default settings
	// Don't change unless you know what you're doing
	//#define ETH_SPI_HOST SPI2_HOST
	//#define SPI_CLOCK_MHZ 8
	// Must connect INT to GPIOxx or not working
	//#define INT_GPIO 10
	//#define MISO_GPIO 5
	//#define MOSI_GPIO 6
	//#define SCK_GPIO 4
	//#define CS_GPIO 7
	//////////////////////////////////////////////////////////
	#include <WebServer_ESP32_SC_W5500.h> // https://github.com/khoih-prog/WebServer_ESP32_SC_W5500
	#define ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_MIN_TARGET "AsyncHTTPRequest_ESP32_Ethernet v1.14.0"
	#define ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_MIN 1014000
	// Uncomment for certain HTTP site to optimize
	//#define NOT_SEND_HEADER_AFTER_CONNECTED true
	// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
	#include <AsyncHTTPRequest_ESP32_Ethernet.h> // https://github.com/khoih-prog/AsyncHTTPRequest_ESP32_Ethernet
	#include <Ticker.h>
	AsyncHTTPRequest request;
	Ticker ticker;
	Ticker ticker1;
	/////////////////////////////////////////////
	// Enter a MAC address and IP address for your controller below.
	#define NUMBER_OF_MAC 20
	byte mac[][NUMBER_OF_MAC] =
	{
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x01 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x02 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x03 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x04 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x05 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x06 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x07 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x08 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x09 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0A },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0B },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0C },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0D },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0E },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0F },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x10 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x11 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x12 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x13 },
	{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x14 },
	};
	// Select the IP address according to your local network
	IPAddress myIP(192, 168, 2, 232);
	IPAddress myGW(192, 168, 2, 1);
	IPAddress mySN(255, 255, 255, 0);
	// Google DNS Server IP
	IPAddress myDNS(8, 8, 8, 8);
	/////////////////////////////////////////////
	void heartBeatPrint(void)
	{
	static int num = 1;
	if (ESP32_W5500_isConnected())
	Serial.print(F("H")); // H means connected
	else
	Serial.print(F("F")); // F means not connected
	if (num == 80)
	{
	Serial.println();
	num = 1;
	}
	else if (num++ % 10 == 0)
	{
	Serial.print(F(" "));
	}
	}
	void sendRequest()
	{
	static bool requestOpenResult;
	if (request.readyState() == readyStateUnsent || request.readyState() == readyStateDone)
	{
	//requestOpenResult = request.open("GET", "http://worldtimeapi.org/api/timezone/Europe/London.txt");
	requestOpenResult = request.open("GET", "http://worldtimeapi.org/api/timezone/America/Toronto.txt");
	if (requestOpenResult)
	{
	// Only send() if open() returns true, or crash
	request.send();
	}
	else
	{
	Serial.println("Can't send bad request");
	}
	}
	else
	{
	Serial.println("Can't send request");
	}
	}
	void requestCB(void *optParm, AsyncHTTPRequest *request, int readyState)
	{
	(void) optParm;
	if (readyState == readyStateDone)
	{
	AHTTP_LOGDEBUG(F("\n**************************************"));
	AHTTP_LOGDEBUG1(F("Response Code = "), request->responseHTTPString());
	if (request->responseHTTPcode() == 200)
	{
	Serial.println(F("\n**************************************"));
	Serial.println(request->responseText());
	Serial.println(F("**************************************"));
	}
	}
	}
	void setup()
	{
	// put your setup code here, to run once:
	Serial.begin(115200);
	while (!Serial && millis() < 5000);
	delay(500);
	Serial.print("\nStart AsyncHTTPRequest_ESP32_SC_W5500 on ");
	Serial.print(ARDUINO_BOARD);
	Serial.print(" with ");
	Serial.println(SHIELD_TYPE);
	Serial.println(WEBSERVER_ESP32_SC_W5500_VERSION);
	Serial.println(ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION);
	Serial.setDebugOutput(true);
	#if defined(ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_MIN)
	if (ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_INT < ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_MIN)
	{
	Serial.print("Warning. Must use this example on Version equal or later than : ");
	Serial.println(ASYNC_HTTP_REQUEST_ESP32_ETHERNET_VERSION_MIN_TARGET);
	}
	#endif
	AHTTP_LOGWARN(F("Default SPI pinout:"));
	AHTTP_LOGWARN1(F("SPI_HOST:"), ETH_SPI_HOST);
	AHTTP_LOGWARN1(F("MOSI:"), MOSI_GPIO);
	AHTTP_LOGWARN1(F("MISO:"), MISO_GPIO);
	AHTTP_LOGWARN1(F("SCK:"), SCK_GPIO);
	AHTTP_LOGWARN1(F("CS:"), CS_GPIO);
	AHTTP_LOGWARN1(F("INT:"), INT_GPIO);
	AHTTP_LOGWARN1(F("SPI Clock (MHz):"), SPI_CLOCK_MHZ);
	AHTTP_LOGWARN(F("========================="));
	///////////////////////////////////
	// To be called before ETH.begin()
	ESP32_W5500_onEvent();
	// start the ethernet connection and the server:
	// Use DHCP dynamic IP and random mac
	uint16_t index = millis() % NUMBER_OF_MAC;
	//bool begin(int MISO_GPIO, int MOSI_GPIO, int SCLK_GPIO, int CS_GPIO, int INT_GPIO, int SPI_CLOCK_MHZ,
	// int SPI_HOST, uint8_t *W5500_Mac = W5500_Default_Mac);
	//ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST );
	ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST, mac[index] );
	// Static IP, leave without this line to get IP via DHCP
	//bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = 0, IPAddress dns2 = 0);
	//ETH.config(myIP, myGW, mySN, myDNS);
	ESP32_W5500_waitForConnect();
	///////////////////////////////////
	Serial.print(F("\nHTTP WebClient is @ IP : "));
	Serial.println(ETH.localIP());
	request.setDebug(false);
	request.onReadyStateChange(requestCB);
	ticker.attach(HTTP_REQUEST_INTERVAL, sendRequest);
	ticker1.attach(HEARTBEAT_INTERVAL, heartBeatPrint);
	// Send first request now
	sendRequest();
	}
	void loop()
	{
	}

---

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Debug Terminal Output Samples

1. AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S3_DEV with ESP32_S3_W5500

Start AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S3_DEV with ESP32_S3_W5500
WebServer_ESP32_SC_W5500 v1.2.1 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0

ETH Started
ETH Connected
ETH MAC: DE:AD:BE:EF:BE:14, IPv4: 192.168.2.89
FULL_DUPLEX, 100Mbps

HTTP WebClient is @ IP : 192.168.2.89

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:01:30.472515-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224090
utc_datetime: 2023-02-01T04:01:30.472515+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHH
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:02:24.463788-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224144
utc_datetime: 2023-02-01T04:02:24.463788+00:00
utc_offset: -05:00
week_number: 5
**************************************

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2. AsyncHTTPRequest_ESP32_SC_ENC on ESP32S3_DEV with ESP32_S3_ENC28J60

Start AsyncHTTPRequest_ESP32_SC_ENC on ESP32S3_DEV with ESP32_S3_ENC28J60
WebServer_ESP32_SC_ENC v1.2.1 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0

ETH Started
ETH Connected
ETH MAC: DE:AD:BE:EF:FE:03, IPv4: 192.168.2.125
FULL_DUPLEX, 10Mbps

HTTP WebClient is @ IP : 192.168.2.125

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:03:24.464007-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224204
utc_datetime: 2023-02-01T04:03:24.464007+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHH
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:04:24.464088-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224264
utc_datetime: 2023-02-01T04:04:24.464088+00:00
utc_offset: -05:00
week_number: 5
**************************************

---

3. AsyncHTTPRequest_ESP32_W5500 on ESP32_DEV with ESP32_W5500

Start AsyncHTTPRequest_ESP32_W5500 on ESP32_DEV with ESP32_W5500
WebServer_ESP32_W5500 v1.5.3 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0

ETH Started
ETH Connected
ETH MAC: DE:AD:BE:EF:FE:11, IPv4: 192.168.2.101
FULL_DUPLEX, 100Mbps

HTTP WebClient is @ IP : 192.168.2.101

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:06:24.463935-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224384
utc_datetime: 2023-02-01T04:06:24.463935+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHH
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:07:24.465199-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224444
utc_datetime: 2023-02-01T04:07:24.465199+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHHHHH

---

4. AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S2_DEV with ESP32_S2_W5500

Start AsyncHTTPRequest_ESP32_SC_W5500 on ESP32S2_DEV with ESP32_S2_W5500
WebServer_ESP32_SC_W5500 v1.2.1 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0
Using built-in mac_eth = 7E:DF:A1:08:32:C9

ETH Started
ETH Connected
ETH MAC: 7E:DF:A1:08:32:C9, IPv4: 192.168.2.133
FULL_DUPLEX, 100Mbps

HTTP WebClient is @ IP : 192.168.2.133

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:09:24.464676-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224564
utc_datetime: 2023-02-01T04:09:24.464676+00:00
utc_offset: -05:00
week_number: 5
**************************************
HH HHHH
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:10:24.464712-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224624
utc_datetime: 2023-02-01T04:10:24.464712+00:00
utc_offset: -05:00
week_number: 5
**************************************

---

5. AsyncHTTPRequest_ESP32_SC_ENC on ESP32C3_DEV with ESP32_C3_ENC28J60

Start AsyncHTTPRequest_ESP32_SC_ENC on ESP32C3_DEV with ESP32_C3_ENC28J60
WebServer_ESP32_SC_ENC v1.2.1 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0
Using built-in mac_eth = 7C:DF:A1:DA:66:87

ETH Started
ETH Connected
ETH MAC: 7C:DF:A1:DA:66:87, IPv4: 192.168.2.136
FULL_DUPLEX, 10Mbps

HTTP WebClient is @ IP : 192.168.2.136

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:12:24.463868-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224744
utc_datetime: 2023-02-01T04:12:24.463868+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHH

---

6. AsyncHTTPRequest_ESP32_W6100 on ESP32_DEV with ESP32_W6100

Start AsyncHTTPRequest_ESP32_W6100 on ESP32_DEV with ESP32_W6100
WebServer_ESP32_W6100 v1.5.3 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0

ETH Started
ETH Connected
ETH MAC: 0C:B8:15:D8:01:D7, IPv4: 192.168.2.158
FULL_DUPLEX, 100Mbps

HTTP WebClient is @ IP : 192.168.2.158

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:13:24.464322-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224804
utc_datetime: 2023-02-01T04:13:24.464322+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHH
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:14:24.465232-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224864
utc_datetime: 2023-02-01T04:14:24.465232+00:00
utc_offset: -05:00
week_number: 5
**************************************

---

7. AsyncHTTPRequest_ESP32_SC_W6100 on ESP32S3_DEV with ESP32_S3_W6100

Start AsyncHTTPRequest_ESP32_SC_W6100 on ESP32S3_DEV with ESP32_S3_W6100
WebServer_ESP32_SC_W6100 v1.2.1 for core v2.0.0+
AsyncHTTPRequest_ESP32_Ethernet v1.15.0

ETH Started
ETH Connected
ETH MAC: FE:ED:DE:AD:BE:EF, IPv4: 192.168.2.92
FULL_DUPLEX, 100Mbps

HTTP WebClient is @ IP : 192.168.2.92

**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:15:24.464696-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224924
utc_datetime: 2023-02-01T04:15:24.464696+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHHHH 
**************************************
abbreviation: EST
client_ip: aaa.bbb.ccc.ddd
datetime: 2023-01-31T23:16:24.464377-05:00
day_of_week: 2
day_of_year: 31
dst: false
dst_from: 
dst_offset: 0
dst_until: 
raw_offset: -18000
timezone: America/Toronto
unixtime: 1675224984
utc_datetime: 2023-02-01T04:16:24.464377+00:00
utc_offset: -05:00
week_number: 5
**************************************
HHHH

---

---

Debug

Debug is enabled by default on Serial.

You can also change the debugging level from 0 to 4

#define ASYNC_HTTP_DEBUG_PORT           Serial

// Use from 0 to 4. Higher number, more debugging messages and memory usage.
#define _ASYNC_HTTP_LOGLEVEL_           1

---

---

Troubleshooting

If you get compilation errors, more often than not, you may need to install a newer version of the ESP32 core for Arduino.

Sometimes, the library will only work if you update the ESP32 core to the latest version because I am using newly added functions.

---

Issues

Submit issues to: AsyncHTTPRequest_ESP32_Ethernet issues

---

TO DO

1. Fix bug. Add enhancement
2. Add support to more LwIP Ethernet shields

DONE

1. Initially add support to ESP32/S2/S3/C3 boards using LwIP W5500 / ENC28J60 / LAN8720 Ethernet
2. Sync with AsyncHTTPRequest_Generic v1.12.0
3. Use allman astyle and add utils. Restyle the library
4. Add support to ESP32S2/C3 boards using LwIP W5500 or ENC28J60 Ethernet
5. Add support to ESP32 and ESP32S2/S3/C3 boards using LwIP W6100 Ethernet
6. Fix _parseURL() bug. Check Bug with _parseURL() #21
7. Improve README.md so that links can be used in other sites, such as PIO

---

---

Contributions and Thanks

This library is based on, modified, bug-fixed and improved from:

1. Bob Lemaire's asyncHTTPrequest Library to use the better asynchronous features of these following Async TCP Libraries : ( ESPAsyncTCP, AsyncTCP, and STM32AsyncTCP ).

⭐️ Bob Lemaire

---

Contributing

If you want to contribute to this project:

• Report bugs and errors
• Ask for enhancements
• Create issues and pull requests
• Tell other people about this library

---

---

License and credits

• The library is licensed under GPLv3

---

Copyright

Copyright (C) <2018> <Bob Lemaire, IoTaWatt, Inc.>

Copyright (C) 2022- Khoi Hoang