ESP32 rebooting when I call Server.begin();

[DinuraPasan]

Board Settings

I use Arduino IDE 2.3.3 version

Code

#ifdef ESP8266
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#elif defined(ESP32)
#include <WiFi.h>
#include <ESPmDNS.h>
#else
#error "Board not found"
#endif

#include <ESPAsyncWebServer.h>

AsyncWebServer Server(80);  // Server port is 80

void notFound(AsyncWebServerRequest *request) {
  request->send(404, "text/plain", "Not found");
}

void setup() {
  Serial.begin(115200);
  WiFi.softAP("ESPAsyncWebServer", "dinura123");
  Serial.println(WiFi.softAPIP());

  if (MDNS.begin("ESP")) {  // esp.local/
    Serial.println("MDNS responder started");
  }

  // Loading home page
  Server.on("/", [](AsyncWebServerRequest *request) {
    String message = "Hello World";
    request->send(200, "text/plain", message);
  });

  // Loading page1
  Server.on("/page1", HTTP_GET, [](AsyncWebServerRequest *request) {
    String message = "This is Page 1";
    request->send(200, "text/plain", message);
  });

  Server.onNotFound(notFound);
  Server.begin();
}

void loop() {}

Error Message

13:59:26.515 -> 192.168.4.1
13:59:26.515 -> MDNS responder started
13:59:26.515 -> 
13:59:26.515 -> assert failed: tcp_alloc /IDF/components/lwip/lwip/src/core/tcp.c:1851 (Required to lock TCPIP core functionality!)
13:59:26.515 -> 
13:59:26.515 -> 
13:59:26.515 -> Backtrace: 0x4008246d:0x3ffb2000 0x4008c35d:0x3ffb2020 0x4009260a:0x3ffb2040 0x400efc3f:0x3ffb2170 0x400efdb5:0x3ffb2190 0x400da574:0x3ffb21b0 0x400d9786:0x3ffb2200 0x400d2a26:0x3ffb2220 0x400dd95b:0x3ffb2270 0x4008d0a6:0x3ffb2290
13:59:26.556 -> 
13:59:26.556 -> 
13:59:26.556 -> 
13:59:26.556 -> 
13:59:26.556 -> ELF file SHA256: 36dda5900
13:59:26.556 -> 
13:59:26.784 -> Guru Meditation Error: Core  1 panic'ed (Unhandled debug exception). 
13:59:26.784 -> Debug exception reason: BREAK instr 
13:59:26.784 -> Core  1 register dump:
13:59:26.784 -> PC      : 0x400846ec  PS      : 0x00000016  A0      : 0x40080306  A1      : 0x3ffc5e50  
13:59:26.784 -> A2      : 0x3ffb1edc  A3      : 0x00000000  A4      : 0x00100590  A5      : 0x3ffc5e80  
13:59:26.815 -> A6      : 0x00000000  A7      : 0x3ffc5a10  A8      : 0x00000000  A9      : 0x00000000  
13:59:26.815 -> A10     : 0x00000000  A11     : 0x00004000  A12     : 0x3ffb1e60  A13     : 0x70000005  
13:59:26.815 -> A14     : 0xfffbfff0  A15     : 0x3ffc3fb4  SAR     : 0x00000008  EXCCAUSE: 0x00000001  
13:59:26.816 -> EXCVADDR: 0x00000000  LBEG    : 0x400898d0  LEND    : 0x400898e6  LCOUNT  : 0xffffffff  
13:59:26.848 -> 
13:59:26.848 -> 
13:59:26.848 -> Backtrace: 0x400846e9:0x3ffc5e50 0x40080303:0x3ffc5e80 0x65a5a5a2:0xa5a5a5a5 |<-CORRUPTED
13:59:26.848 -> 
13:59:26.848 -> 
13:59:26.848 -> 
13:59:26.848 -> 
13:59:26.848 -> ELF file SHA256: 36dda5900
13:59:26.848 -> 
13:59:26.848 -> Re-entered core dump! Exception happened during core dump!
13:59:26.848 -> Rebooting...
13:59:26.848 -> ets Jul 29 2019 12:21:46
13:59:26.848 -> 
13:59:26.848 -> rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
13:59:26.848 -> configsip: 0, SPIWP:0xee
13:59:26.848 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
13:59:26.887 -> mode:DIO, clock div:2
13:59:26.887 -> load:0x3fff0030,len:4688
13:59:26.887 -> load:0x40078000,len:15448
13:59:26.887 -> load:0x40080400,len:4
13:59:26.887 -> ho 8 tail 4 room 4
13:59:26.887 -> load:0x40080404,len:3196
13:59:26.887 -> entry 0x400805a4
13:59:27.295 -> E (430) esp_core_dump_flash: Corf"յ��data check failed:
13:59:27.295 -> Calculated checksum='50a65a55'
13:59:27.295 -> Image checksum='ffffffff'

[moralesaugusto]

Same issue here....

[AbuAlHagag]

same here

[per1234]

There is a duplicate report at https://github.com/me-no-dev/ESPAsyncWebServer/issues/1455

In that report, a workaround is described:

After reinstalling version 3.0.7, the problem was solved.

(3.0.7 is referring to the version of the "esp32" boards platform)

So you can use the Arduino IDE Boards Manager to roll back from the incompatible 3.1.0 version of the "esp32" boards platform to the last compatible version 3.0.7.

There is also a response from the library author there:

https://github.com/me-no-dev/ESPAsyncWebServer/issues/1455#issuecomment-2552076181

will be fixed/updated to work with core 3.1.0

[mathieucarbou]

FYI, please read:

• https://github.com/mathieucarbou/ESPAsyncWebServer?tab=readme-ov-file#dependencies

• https://github.com/espressif/arduino-esp32/issues/10526

If you use the right dependencies this is fixed, until the author merges back the changed from our community maintained fork into his original repos.