[BUG] server not reachable after calling end() and begin().

[mkalkbrenner]

• Which board: ESP32S3

AsyncWebServer *server = new AsyncWebServer(80);
// Start the web server
server->begin();

delay(10000);
server->end();

delay(10000);
server->begin();

The server works fine. But if I stop the sever and start it again later, it isn't reachable anymore.

[mkalkbrenner]

Some more tests.
Even that doesn't work:

AsyncWebServer *server = new AsyncWebServer(80);
// Start the web server
server->begin();

delay(10000);
server->end();
delete server;
server = nullptr;

delay(10000);
server = new AsyncWebServer(80);
server->begin();

The server is not reachable on port 80 after the "restart".

But if I do this, I can reach the server on port 81:

AsyncWebServer *server = new AsyncWebServer(80);
// Start the web server
server->begin();

delay(10000);
server->end();
delete server;
server = nullptr;

delay(10000);
server = new AsyncWebServer(81);
server->begin();

[mathieucarbou]

I can reproduce indeed. Ahah! I didn't have my WiFi Client activated :P

So I cannot reproduce.

you can add at the end of the SimpleServer:

  Serial.println("begin()");
  server.begin();

  delay(10000);
  Serial.println("end()");
  server.end();
  delay(10000);
  Serial.println("begin()");
  server.begin();

• wait for begin()
• do a curl requests curl -v http://192.168.4.1
• wait for end(), then begin()
• do a curl request curl -v http://192.168.4.1

begin()
* Connection from 192.168.4.2:58749
> GET / HTTP/1.1
> Host: 192.168.4.1
> User-Agent: curl/8.11.1
> Accept: */*
>
* Processed in 1 ms
< HTTP/1.1 200 OK
< connection: close
<
end()
begin()
=========== After Setup Start ============
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   326716 B ( 319.1 KB)
  Free Bytes        :   219248 B ( 214.1 KB)
  Allocated Bytes   :    95436 B (  93.2 KB)
  Minimum Free Bytes:   197212 B ( 192.6 KB)
  Largest Free Block:   110580 B ( 108.0 KB)
------------------------------------------
GPIO Info:
------------------------------------------
  GPIO : BUS_TYPE[bus/unit][chan]
  --------------------------------------  
     1 : UART_TX[0]
     3 : UART_RX[0]
     4 : GPIO
============ After Setup End =============
Free heap: 219248
Free heap: 219248
* Connection from 192.168.4.2:58794
> GET / HTTP/1.1
> Host: 192.168.4.1
> User-Agent: curl/8.11.1
> Accept: */*
>
* Processed in 2 ms
< HTTP/1.1 200 OK
< connection: close
<
Free heap: 219248
Free heap: 219248

I will move to a discussion until it can be proven there is an issue, or until you found what is wrong on your setup.

Maybe post a complete ino file to reproduce.

Also, please test with the SimpleServer example ;-)