me-no-dev/ESPAsyncWebServer

Async Web Server for ESP8266 Arduino

István Horváth

@armogur_gitlab

@softwarecrash I would try this one: https://github.com/me-no-dev/ESPAsyncWebServer#chunked-response

with size_t index as input parameter you can figure out where is the chunked response in the processing, though I not used this method, but looks like it will solve your problem

Rocky

@softwarecrash

@armogur_gitlab thanks, but have you another bigger sampele? i dont understand this code fragment in your link. sorry im not the pro in this things

Rocky

@softwarecrash

@armogur_gitlab can it be so simple? ti have found the print function, and testet, yeah it works, but is it right? looks too simple

server.on("/", HTTP_GET, [](AsyncWebServerRequest *request)
{
AsyncResponseStream *response = request->beginResponseStream("text/html");
response->printf_P(HTMLhead);
response->printf_P(HTMLMain);
response->printf_P(HTMLfoot);
request->send(response);
});

Rocky

@softwarecrash

ok not so simple.... the processor doenst work, i cant replace things with vars

Rocky

@softwarecrash

printf_P(HTMLMain, processor); dont work in this scenario. any other practicable way to send variables with the request to prefill a dataform?

gecoool

@gecoool

Hello me-no-dev. I am stuck with ESPAsyncTCP ".pio\libdeps\esp12e\ESPAsyncTCP@src-4b2fa33d3d75d4541c5b044be255a09c\src/tcp_axtls.h:44:10: fatal error: include/ssl.h: No such file or directory". I made some researches but without luck. I am trying to make an SSL call to google sheet, but without success. Any pointers / ideas would be much appreciated, as this is a show stopper for my project. Thx !

DaeMonSx

@DaeMonSx

I am wondering, did anyone have problem with ESPAsyncWebServer or ESPAsyncTCP ? in regards to heap fragmentation?? First of all the bad String class, secondly, it seems i have major issue with heap fragmentation if using websocket.

me-no-dev : anykind of intention to replace the old arduino String class with std::string ? at least to have sso ..

István Horváth

@armogur_gitlab

@DaeMonSx I experienced this behaviour as well while running my microcontroller for days, I am rewriting the whole async tcp and its server counterparts to use char *

Mikey

@Mchaney3

Hi all. Fairly new and very sorry if answered as I've looked but I'm trying to use AsyncWebServer with SdFat and 128 GB exFAT SDHC. I'm having issues with the following lines in my code since I'm not using SD.h

request->send(SD, "/index.html", "text/html"); }); server.serveStatic("/", SD, "/");

I've tried changing SD to sd, and file objects without success. Also tried FS and fs with no luck. I'm fairly new and jsut not sure what filesystem to send from SdFat for request->send

Mike Dunston

@atanisoft

SdFat is not likely supported, at least on esp32 for sure as there is built-in SD/SDMMC support from the platform that does work.

Rainer Barth

@HobDev-RCB

I saw on VSCode / PlatformIO there is an update available from 1.2.7 (my installed version) to Version 2.1.0. But it is marked as incompatible. I have the latest esp8266 platform module version 3.2.0. Is it necessary to update and if so, how can I do it?

NC700Rider

@NC700Rider

Hi all, I am a bit new on this ESPsyncWebServer. I am using ESPAsyncWebServer to be able to serve a JSON file to a client by using one API/end point. The client could modify the JSON and send back the JSON using other API/end point. I have managed to do it using a small JSON file. The file is included in the body of the request that the client sends to my ESP8266. The problem comes when the size of the JSON is bigger and the request's body gets the ESP8266 in chunks. I have checked the ESPAsyncWebServer documentation trying to figure out how to manage the chunks to be able to load in a String or even better, in the JSON doc that I use in my ESP8266.
Do you know how I can concat all the chunks (3 in my case) in a String or in a JSON?
Thank you in advanced

BBsan

@bbsan2k

Hey everyone,
@me-no-dev Thanks for your great lib 😊 I'm trying to migrate from "Stock" Webserver in arduino to ESPAsyncWebServer on an ESP32 project right now, as I need to use WebSockets for some functionality.
Unfortunately I cannot get the lib to build with ESP-IDF 4.4. It already fails when I try to include it.
Besides the CMakeLists format is still the "old" IDF style, I don't see any obvious issue.
I added the lib as a component, added AsyncTCP as a component and added arduino-esp as a component (within components/arduino).
Is there any point I'm missing?

BBsan

@bbsan2k

Never mind -.- forgot to add a requirement in my CMAKELists

Mike Dunston

@atanisoft

@bbsan2k If you are using IDF v4.4 I'd suggest looking at the IDF http_server component, I believe it also has built-in WS handling and has fewer restrictions on what you can/can't do within callbacks.

idolpx

@idolpx

Is there a way to flush an AsyncResponseStream if you are going to exceed the buffer size?

If my data is less than the buffer it gets sent fine but if it is bigger it gets truncated.

SamiHadjSaLem

@SamiHadjSaLem

Hi everyone ,how to solve this problem in the uploading : A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header

István Horváth

@armogur_gitlab

interesting, maybe your browser can not connect to your EPS32, can this be like your microcontroller lost WIFI connection?

dm5xx

@dm5xx

Hi guys, i still have a problem - no idea what to do, heres again my question: I am reading an value continously in my main/loop-code and writing it in a global variabal. in my server.on callback/handler function i am reading this value and returning it to the clients browser. for sure its crashing when i write it the same time.
Q1: how is the best way to avoid this (i am using a locked-variable at the moment).
Q2: since its async somehow, is there task scheduling and running on different cores@esp32 involved? Best way to exchange "data"/share aviables between "global code" and webserver(callbacks?
Hope im not mixing things too much - and sri for some rookie questening stuff :) Tnx for your support. M.

Mehrdad K

@mkeyno

hi all
I made a couple of header file for different prepherals + header file for my asyncserver & asyncwebsocket

my_wifi.h

AsyncWebServer server(80);
AsyncWebSocket WS("/ws");

in other header file I have sensor to measure sumeting and send through websocket

my_sensor.h
WS.textAll(my_data);

but it can not see my WS instance error: 'WS' was not declared in this scope
does anyone know how can I pass my WS instance to other header files

DaeMonSx

@DaeMonSx

Hi guys, i still have a problem - no idea what to do, heres again my question: I am reading an value continously in my main/loop-code and writing it in a global variabal. in my server.on callback/handler function i am reading this value and returning it to the clients browser. for sure its crashing when i write it the same time.
Q1: how is the best way to avoid this (i am using a locked-variable at the moment).
Q2: since its async somehow, is there task scheduling and running on different cores@esp32 involved? Best way to exchange "data"/share aviables between "global code" and webserver(callbacks?
Hope im not mixing things too much - and sri for some rookie questening stuff :) Tnx for your support. M.

why not with websocket?

f0m3

@f0m3

Hey, is there any chance to have a socket.io server on esp8266?
Short problem description: There is a project thats all done in javascript. It uses a raspberry as socket.io server to do hardware things that a js client on a pc directs via socket.io. I cant really change the PC part but i want to replace the raspberry with esp8266 to scale prizes and make it "easier" to build.
but i cant find any resources for a socket.io server. Only clients everywhere.

István Horváth

@armogur_gitlab

@dm5xx maybe you should share your code

Mehrdad K

@mkeyno

hi All, I'm using the AsyncWebSocket on ESP32, and in the loop, I send the sensor data back to the page by simple code WS.text(WSclinet,data); however after a while _messageQueue.length() exceeded of maximum size and throw ERROR: Too many messages queued , does anyone know how to solve it

Mehrdad K

@mkeyno

I couldn't find any solution by current code, so I add the following function to the source code and the call the clearQ after each transmitting

void AsyncWebSocket::clearQ(uint32_t id){
  AsyncWebSocketClient * c = client(id);
  if(c)
    c->QueuFree();
}

.......

void AsyncWebSocketClient::QueuFree(){
_messageQueue.free();
}

ArcadeD3vil

@ArcadeD3vil

Hi mates !

ArcadeD3vil

@ArcadeD3vil

any solutions for using ESP32-C3 Stamp with ESPAsyncWebServer and AsyncTCP.h successfully? getting compile errors on arduino ide 1.8.16 with installed esp32 arduino boardmanager version >= 2.0.0....

C:\Users\thoma\Documents\Arduino\libraries\ESPAsyncWebServer-master\src\AsyncWebSocket.cpp: In member function 'IPAddress AsyncWebSocketClient::remoteIP()':
C:\Users\thoma\Documents\Arduino\libraries\ESPAsyncWebServer-master\src\AsyncWebSocket.cpp:843:28: error: call of overloaded 'IPAddress(unsigned int)' is ambiguous
return IPAddress(0U);
^
In file included from C:\Users\thoma\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.0\cores\esp32/Arduino.h:163,
from C:\Users\thoma\Documents\Arduino\libraries\ESPAsyncWebServer-master\src\AsyncWebSocket.cpp:21:
C:\Users\thoma\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.0\cores\esp32/IPAddress.h:51:5: note: candidate: 'IPAddress::IPAddress(const uint8_t)'
IPAddress(const uint8_t address);
^~~
C:\Users\thoma\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.0\cores\esp32/IPAddress.h:50:5: note: candidate: 'IPAddress::IPAddress(uint32_t)'
IPAddress(uint32_t address);
^~~
C:\Users\thoma\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.0\cores\esp32/IPAddress.h:29:7: note: candidate: 'constexpr IPAddress::IPAddress(const IPAddress&)'
class IPAddress: public Printable
^~~~~
exit status 1

1 reply

Sloata George

@GeorgeFlorian

Hello.
Does anybody has any idea how should I serve a web interface that's built with Parcel v2 on the ESPAsyncWebServer ?
The above code doesn't work.

Mehrdad K

@mkeyno

Hi All
has anyone know, how to respond back a web request with a JSON file, it seems many methods in this repo are deprecated
class "AsyncResponseStream" has no member "getRoot"

4 replies

OnurNP

@K0rkunc

can i use async web server with gsm module

Umer Arshad

@umerm64

Hello everyone.
Hope you all are doing well.

I am having an issue where I get an exception due to the AsyncWebServer library in esp32.
Basically the issue occurs as soon as I connect my device with the esp AccessPoint or when the Esp connects to a WiFi station.

Can someone please help me with this.

Thanks in advance.

abort() was called at PC 0x401abfb2 on core 1

ELF file SHA256: 0000000000000000

Backtrace: 0x400903e8:0x3ffd3290 0x40090745:0x3ffd32b0 0x401abfb2:0x3ffd32d0 0x4020f2dc:0x3ffd32f0 0x4020f2a1:0x3ffd3310 0x4010035a:0x3ffd3330 0x400f4b2d:0x3ffd3370 0x400f72d0:0x3ffd3480 0x400f76de:0x3ffd34c0 0x40119180:0x3ffd34e0 0x400921f2:0x3ffd3500
  #0  0x400903e8:0x3ffd3290 in invoke_abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #1  0x40090745:0x3ffd32b0 in abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #2  0x401abfb2:0x3ffd32d0 in __cxa_allocate_dependent_exception at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/cxx/cxx_exception_stubs.cpp:19
  #3  0x4020f2dc:0x3ffd32f0 in operator new(unsigned int) at /builds/idf/crosstool-NG/.build/src/gcc-5.2.0/libstdc++-v3/libsupc++/new_op.cc:54
  #4  0x4020f2a1:0x3ffd3310 in operator new[](unsigned int) at /builds/idf/crosstool-NG/.build/src/gcc-5.2.0/libstdc++-v3/libsupc++/new_opv.cc:32
  #5  0x4010035a:0x3ffd3330 in WiFiUDP::parsePacket() at C:/Users/umer.arshad/.platformio/packages/framework-arduinoespressif32@src-e9b1fbd6563a55e19ddae15e1fc09589/cores/esp32/Udp.h:46    
  #6  0x400f4b2d:0x3ffd3370 in handleNotifications() at wled00/udp.cpp:204
  #7  0x400f72d0:0x3ffd3480 in WLED::loop() at wled00/bus_manager.h:149
  #8  0x400f76de:0x3ffd34c0 in loop() at D:/MyStuff/WattsLights/WLED/wled00/wled00.ino:20
  #9  0x40119180:0x3ffd34e0 in loopTask(void*) at C:/Users/umer.arshad/.platformio/packages/framework-arduinoespressif32@src-e9b1fbd6563a55e19ddae15e1fc09589/cores/esp32/main.cpp:23        
  #10 0x400921f2:0x3ffd3500 in vPortTaskWrapper at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DOUT, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1084
load:0x40078000,len:11220
load:0x40080400,len:5360
entry 0x4008067c

Mike Dunston

@atanisoft

@umerm64 that backtrace has nothing to do with ESPAsyncWebServer but instead a known bug in older versions of arduino-esp32: espressif/arduino-esp32#4104. It is not clear if this has been addressed or not in arduino-esp32 2.0.3-rc1 or not though.

Umer Arshad

@umerm64

Thanks @atanisoft
I shall look into it.

Umer Arshad

@umerm64

@atanisoft Thank you for your suggestion. It helped a little with the issue but I still am facing the problem
Basically I am using BLE alongwith WiFi
When I initialize BLE before connecting WiFi it crashes as follows:

Connecting to WFH...
abort() was called at PC 0x401f8477 on core 0
ELF file SHA256: 0000000000000000
Backtrace: 0x40090370:0x3fff0580 0x400906cd:0x3fff05a0 0x401f8477:0x3fff05c0 0x401d7ca0:0x3fff05e0 0x401d6fde:0x3fff0600 0x401fb012:0x3fff0620 0x4009217a:0x3fff0650
  #0  0x40090370:0x3fff0580 in invoke_abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #1  0x400906cd:0x3fff05a0 in abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #2  0x401f8477:0x3fff05c0 in pm_set_sleep_type at ??:?
  #3  0x401d7ca0:0x3fff05e0 in wifi_set_ps_process at ??:?
  #4  0x401d6fde:0x3fff0600 in ieee80211_ioctl_process at ??:?
  #5  0x401fb012:0x3fff0620 in ppTask at ??:?
  #6  0x4009217a:0x3fff0650 in vPortTaskWrapper at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DOUT, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1084
load:0x40078000,len:11220
load:0x40080400,len:5360
entry 0x4008067c

On the contrary, when I reverse the order of WiFi and BLE and connect to WiFi before then it connects to WiFi correctly but crashes in the BLE as follows:

Connecting to WFH...
Connected! IP address: 192.168.10.21
Init STA interfaces
mDNS started
going to init ble
abort() was called at PC 0x401a8332 on core 1
ELF file SHA256: 0000000000000000
Backtrace: 0x40090370:0x3ffd3170 0x400906cd:0x3ffd3190 0x401a8332:0x3ffd31b0 0x401aca70:0x3ffd31d0 0x401acc4a:0x3ffd31f0 0x4011905a:0x3ffd3220 0x40114ae2:0x3ffd3240 0x4010d711:0x3ffd3280 0x400f55a2:0x3ffd32b0 0x400f56a4:0x3ffd32f0 0x400f6b03:0x3ffd3310 0x400f6b4a:0x3ffd33d0 0x400f6f62:0x3ffd3410 0x40116e2c:0x3ffd3430 0x4009217a:0x3ffd3450
  #0  0x40090370:0x3ffd3170 in invoke_abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #1  0x400906cd:0x3ffd3190 in abort at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:648
  #2  0x401a8332:0x3ffd31b0 in coex_init at ??:?
  #3  0x401aca70:0x3ffd31d0 in esp_phy_rf_init at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/phy_init.c:524
  #4  0x401acc4a:0x3ffd31f0 in esp_phy_load_cal_and_init at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/esp32/phy_init.c:673
  #5  0x4011905a:0x3ffd3220 in esp_bt_controller_enable at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/bt/bt.c:1704
  #6  0x40114ae2:0x3ffd3240 in btStart at C:\Users\umer.arshad\.platformio\packages\framework-arduinoespressif32\cores\esp32/esp32-hal-bt.c:45
  #7  0x4010d711:0x3ffd3280 in BLEDevice::init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) at C:/Users/umer.arshad/.platformio/packages/framework-arduinoespressif32@src-e9b1fbd6563a55e19ddae15e1fc09589/libraries/BLE/src/BLEDevice.cpp:591
  #8  0x400f55a2:0x3ffd32b0 in ble_init() at wled00/usermod.cpp:110
  #9  0x400f56a4:0x3ffd32f0 in userConnected() at wled00/usermod.cpp:123
  #10 0x400f6b03:0x3ffd3310 in WLED::handleConnection() at wled00/bus_manager.h:149
  #11 0x400f6b4a:0x3ffd33d0 in WLED::loop() at wled00/bus_manager.h:149
  #12 0x400f6f62:0x3ffd3410 in loop() at D:/MyStuff/WattsLights/WLED/wled00/wled00.ino:20
  #13 0x40116e2c:0x3ffd3430 in loopTask(void*) at C:\Users\umer.arshad\.platformio\packages\framework-arduinoespressif32\cores\esp32/main.cpp:23
  #14 0x4009217a:0x3ffd3450 in vPortTaskWrapper at /home/cschwinne/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0

I know that its probably related to some memory issue but I just can't place my mind.

Mike Dunston

@atanisoft

doesn't look memory related, open an issue on arduino-esp32 and provide a reproducible test case and someone will be able to help likely.

Umer Arshad

@umerm64

I have posted it in the arduino-esp32 group here at gitter as well @atanisoft

Mike Dunston

@atanisoft

open an issue on GitHub as well

Umer Arshad

@umerm64

espressif/arduino-esp32#6541

Muhammad Arslan

@arslan437

Hi, New to gitter. How can I check how many messages are in queue of web socket.

Mehrdad K

@mkeyno

Hi all, I'm using async webserver call back to start or stop the timer , I can start and change alaram period without any problem but when I stop the timer I've got following error and chip reset

abort() was called at PC 0x400eca91 on core 0
Backtrace:0x4008369d:0x3ffbeadc |<-CORRUPTED

my call back is

void dosing(String side, String value,AsyncWebServerRequest *request){
request->send(200, "text/plain", "sure"); 
uint8_t s=side.toInt();
uint32_t v=value.toInt();
//PRINTS("speed=",v);
if(v<11)  stepper.stop();
 }
//////////////////////////////////
// class method
void  Stepper::stop(void){
//timerDetachInterrupt(timers[timer_n]);
 timerAlarmDisable(timers[timer_n]);
 timerStop(timers[timer_n]);
}
/////

OnurNP

@K0rkunc

hi how to detect wifi password is wrong

Hamza Khan

@hamza765

@K0rkunc maybe checkout WiFi.status()

Hamza Khan

@hamza765

void onBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total){
  if(!index){
    Serial.printf("BodyStart: %u B\n", total);
  }
  for(size_t i=0; i<len; i++){
    Serial.write(data[i]);
  }
  if(index + len == total){
    Serial.printf("BodyEnd: %u B\n", total);
  }
}

server.on("/connect", HTTP_POST, [](AsyncWebServerRequest * request) {
    Serial.print("connect");

    request->send(200);

  }, onBody);
  server.onFileUpload(onUpload);
  server.onRequestBody(onBody);

Any clue why my code isn't printing anything out when i send call that route and send it a message of 'ping'?

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