Just Question: Can I use MQTT connexion (using PubSubClient lib)

[AlainF-ing]

Hi

Very good esp-fs-webser function with vesion 2.x.

I have used SimpleServer.ino example and try to merge it with one of my application.
I need to connect MQTT to send my measurement to Node-red.
So far my program can not connect MQTT while the myWebServer is present (no compiler error)

ESP32 core version:
esp32:esp32 3.3.4

Libraries version:
esp-fs-webserver 2.0.10
PubSubClient 2.8

From my application program:
In declaration:
WiFiClient espClient;
PubSubClient client(espClient);

In setup()
...
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
..
in reconnect function:
(client.connect(clientId.c_str()))
never connect with my MQTT server

Any ideas what is wrong ?
Do you have example program with MQTT and esp-fs-webserver ?

Thanks for your help
Alain

[cotestatnt]

Hello @AlainF-ing
I have indeed run some tests myself, and it appears that when the two libraries are used together, they interfere with each other. I haven't been able to investigate exactly what the PubSubClient class does in detail, but I've read online about similar issues with other libraries as well.

This is also a bit surprising to me because one uses the Server class and the other uses the Client class, so they should be completely separate, at least from a logical standpoint.

I then tried compiling a similar example using the async-esp-fs-webserver library, which is very similar, but instead of using the core-included WebServer class, it uses the excellent ESPAsyncWebServer library, and it works as expected.

One of the differences between the core-included WebServer and ESPAsyncWebServer is that the latter uses a dedicated FreeRTOS task (which is why you don't need to run related instructions in the loop() function).
So, I tried structuring the example by using two separate tasks: one for the web server (default Arduino loop task) and another one for the MQTT client.

[AlainF-ing]

Hello @cotestatnt

Thanks again for your quick answer.
I will give it a try, this sound exactly what I need.
The esp-fs-webserver have given a real help to move my applications on ESP32.
Your work has made a big difference for me.

Thanks again
Alain

[AlainF-ing]

Hello @cotestatnt

I am not an expert, so I got some challenges to get the proper libraries.
I am using Arduino-cli integrated to Geany so I ended up using the zip files.
Now this is working Ok, I am able to receive the MQTT messages as well as sending BuiltIn led command.
Thanks again

Alain

[cotestatnt]

so I ended up using the zip files.

Yes, in fact, I didn't specify that the change hasn't been officially released yet, so the zip file is the correct way until a new release is available.