Ssl lib for ethernet esp32 not working

Libraries
1

Hi community

I hope you are fine and well.
I have already tried this lib and it is working well for connecting an ethernet shield enc28j60 with tls to aws (mqtts) for esp32 micro

but now I have the need to call this istruction…

SSLClientParameters mTLS = SSLClientParameters::fromPEM(my_cert, sizeof my_cert, my_key, sizeof my_key);

not at the beginning of the module (as shown in the example above) but at runtime inside another function.

I explain you why i need to do this it is because i want to read from a txt file the certificates and keys for the connection instead of change the code manually for every device that is deployed.

But when i try to do this

uint8_t setup_ethernet(void)
{
  uint8_t result_connection = 0;

  /*retrieve security info for aws from memory*/
  Load_secrets_from_memory();

  SSLClientParameters mTLS = SSLClientParameters::fromPEM(my_cert, sizeof my_cert, my_key, sizeof my_key);

  /*authentication on aws*/
  ethClientSSL.setMutualAuthParams(mTLS);

  Ethernet.init(ETH_CS, &ethernetSPI, ETH_SCLK, ETH_MISO, ETH_MOSI);
  Serial.begin(115200);
  while (!Serial)
  {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  Ethernet.begin(mac, TIME_OUT_WAITING_ETH_CABLE);
  // Check for Ethernet hardware present
  if (Ethernet.hardwareStatus() == EthernetNoHardware)
  {

    result_connection = 1;
    Serial.println("Ethernet shield was not found.  Sorry, can't run without hardware. :(");

    while (true)
    {
      delay(1); // do nothing, no point running without Ethernet hardware
    }
  }
  if (Ethernet.linkStatus() == LinkOFF)
  {
    result_connection = 1;
    Serial.println("Ethernet cable is not connected.");
  }

  Serial.print("Joined LAN with IP ");
  Serial.println(Ethernet.localIP());
  Serial.flush();

  setup_time();

  // Create a message handler
  mqtt_istance.setCallback(callback);

  return result_connection;
}

my esp32 is crashing and restarting…

I wonder if in your opinion it is possible to call that instruction once i have read the txt file…

Thanks a lot for your help

2

This could be a very stack-heavy function, have you tried increasing the stack?

; increase stack from 8K to ~32K
build_flags = 
   -DARDUINO_LOOP_STACK_SIZE=32000