mobizt/Firebase-ESP8266

cant read a string having more then 447 chars!

linktoahmad opened this issue · 3 comments

linktoahmad commented

this is the code

    if(Firebase.getString(fbdo, "/tokens")){
      Serial.println(fbdo.stringData().c_str());
      } 
      else{
        Serial.println(fbdo.errorReason().c_str());
        }

works great with string less than 447 chars
the error displays nothing
on updating the data in firebase from less than 447 chars to more than 447 chars the fbdo.errorReason().c_str() keep on displaying the data before update!!

board = node mcu
Arduino ide = 1.8.15
previously I was using ArduinoFirebase library and it was reading string up to 1000 chars :/

mobizt commented

This is not a bug.

In ESP8266 BearSSL library, you can reserve the memory for it's transmit and receive buffer for transmission data handling.

The Firebase Data object creates a WiFiClientSecure that use core SSL's BearSSL library.

With Firebase library, this option can set from setBSSLBufferSize like this

fbdo.setBSSLBufferSize(2048 /* rx buffer size in byte from 512 to 16384 */, 2048/* tx buffer size in byte from 512 to 16384 */);
  • ❤️1
mobizt commented

You should set this option to match your payload size to receive or send.
You should try to increase the value until it is ok for your data.

  • ❤️1
mobizt commented

You should use the Discussions first as I wrote in the issue template.
If it is the bug that you provide the reproduce code, then it can review and translate to the issue.

  • 👍1