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fredlcore / BSB-LAN

LAN/WiFi interface for Boiler-System-Bus (BSB) and Local Process Bus (LPB) and Punkt-zu-Punkt Schnittstelle (PPS) with a Siemens® controller used by Elco®, Brötje® and similar heating systems
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[BUG] Web Server Stopped Working #608

Closed sebi5361 closed 6 months ago

sebi5361 commented 6 months ago

BSB-LAN version 3.3.2-20231115201023 running on ESP32 Dev Module connected to Atlantic Alfea Extensa Duo 6.

The web server on my BSB-LAN stopped working. This is the telnet debug log when I try to reach it using a browser:

Version: 3.3.2-20231115201023
GET / HTTP/1.1

Timeout

MQTT exchanges stopped as well, despite telnet debug connection being still alive. Reset didn't do anything bringing back the http server to normal. I had to reflash the whole firmware. I didn't do anything special to corrupt the http server. Just adjusting some parameters. Did other users experienced this too? Is there a way to perform a full reset of the board (resetting config parameters to their original value) without having to reflash the entire firmware?

fredlcore commented 6 months ago

If the debug log via telnet still shows the GET / HTTP/1.1 then this means that the network connection is still active and the request for the website was received. There is no "webserver" per se (in the sense of a separate component) in BSB-LAN, so if it does not respond to the request then something else takes too long and leads to a timeout. It's nearly impossible to diagnose this from afar, but you can reset all settings in the EEPROM by calling /NE which will clear the EEPROM including all settings and then restart BSB-LAN with the settings in BSB_LAN_config.h. If you have made changes in that file, go back as close as possible to the default settings, flash it and monitor the situation after each change you do.

sebi5361 commented 6 months ago
URL Command Effect
/NE Reset & reboot microcontroller (takes approx. 15 seconds) and erase EEPROM

Indeed I missed this command from the manual. I will try when (if) it happens next time.

Thanks for your prompt answer 🤗

sebi5361 commented 6 months ago
I just realized that I set 27 MQTT logging parameters before freezing BSB-LAN: Settings
Logging Parameters 700,710,712,720,721,1610,1612,1614,6800,6803,6805,6806,8000,8003,8304,8700,8703,8704,8740,8741,8742,8820,8830,8831,8950,8951,10019

20 parameters is the limit, right? Could this be the reason for freezing HTTP and MQTT communications on BSB-LAN?

fredlcore commented 6 months ago

Yes, 20 is the limit. And yes, of course, out-of-bound variable definitions can result in all sorts of problems.