system crashes and restart when doing discoverAttributes

[baykey]

hardware used: BLE client: ESP-WROOM-32 BLE server: quarq power meter

When calling discoverAttributs the function discoverDescriptors in ATT.cpp turns into an infinite loop. I added a breaker to prevent this. Maybe someone with more skills can solve this more nicely..

>bool  ATTClass::discoverDescriptors(uint16_t connectionHandle, BLERemoteDevice* device)
> {
>   //Serial.println("discoverDescriptors");
>   uint16_t reqStartHandle = 0x0001;
>   uint16_t reqEndHandle = 0xffff;
>   uint8_t responseBuffer[_maxMtu];
> 
>   int serviceCount = device->serviceCount();  
> 
>   for (int i = 0; i < serviceCount; i++) {
>     BLERemoteService* service = device->service(i);
> 
>     uint16_t serviceEndHandle = service->endHandle();
>     int characteristicCount = service->characteristicCount();
>     for (int j = 0; j < characteristicCount; j++) {
>       BLERemoteCharacteristic* characteristic = service->characteristic(j);
>       BLERemoteCharacteristic* nextCharacteristic = (j == (characteristicCount - 1)) ? NULL : service->characteristic(j + 1);
> 
>       reqStartHandle = characteristic->valueHandle() + 1;
>       reqEndHandle = nextCharacteristic ? nextCharacteristic->valueHandle() : serviceEndHandle;
> 
>       if (reqStartHandle > reqEndHandle) {
>         continue;
>       }
> int brkr=0;
>       while (1) {
> brkr+=1;
> 
>         int respLength = findInfoReq(connectionHandle, reqStartHandle, reqEndHandle, responseBuffer);
> 
> if (brkr==50) {
>  // Serial.println("breaker");
> //Serial.println(respLength );
> //Serial.println(responseBuffer[0] );
> break;
> }
>         if (respLength == 0) {
>           return false;
>         }
> 
>         if (responseBuffer[0] == ATT_OP_FIND_INFO_RESP) {
>           uint16_t lengthPerDescriptor = responseBuffer[1] * 4;
>           uint8_t uuidLen = 2;
> 
>           for (int i = 2; i < respLength; i += lengthPerDescriptor) {
>             struct __attribute__ ((packed)) RawDescriptor {
>               uint16_t handle;
>               uint8_t uuid[16];
>             } *rawDescriptor = (RawDescriptor*)&responseBuffer[i];
> 
>             BLERemoteDescriptor* descriptor = new BLERemoteDescriptor(rawDescriptor->uuid, uuidLen,
>                                                                       connectionHandle,
>                                                                       rawDescriptor->handle);
> 
>             if (descriptor == NULL) {
>               return false;
>             }
> 
>             characteristic->addDescriptor(descriptor);
>             Serial.print("descriptor toegevoegd");            
>             reqStartHandle = rawDescriptor->handle + 1;
>           }
>         } else {
>           break;
>         }
>       }
>     }
>   }
> 
>   return true;
> }
> 
>