Firebase and HTTPS over custom API.

[Ricardo-Manzanares]

On my ESP8266 Firebase connections work correctly, also HTTPS requests to external custom API.

The problem I have is when the Firebase connection is initialized in the setup or post startup functions, any HTTPS request that is executed returns a -1.

If I disable the Firebase connection, just by commenting out the Firebase.begin(&config, &auth) line; the HTTPS requests work correctly.

Is there any incompatibility of using both connections?

My ESP8266 receives an HTTP connection on an ESP8266WebServer, queries data to Firebase and executes an HTTPS connection to a custom API and I have the problem that the last part of the process returns -1 with error description : connection failed

any idea?

thanks

[mobizt]

#388 (comment)

[Ricardo-Manzanares]

Hi @mobizt

I debugger ESP8266 and response is :
BSSL:_connectSSL: start connection
BSSL:_connectSSL: OOM error
[HTTP-Client] failed connect to "endpoint https"
...
[HTTP-Client][end] tcp is closed

andy idea?

thanks

[mobizt]

Out Of Memory (OOM)

At least you have to read the library Readme.
https://github.com/mobizt/Firebase-ESP8266?tab=readme-ov-file#memory-options

[Ricardo-Manzanares]

@mobizt

Indeed, with the configuration MMU option 3, 16KB cache + 48KB IRAM and 2nd Heap (shared), it works correctly.

Thank you very much for your help.