Bluetooth manager find does not time out

[rlaybourn]

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I am finding that in the example program asynctinyb.cpp the bluetooth manager find function does not seem to timeout if the device is not found . The program is stuck until I get the following error (I added some output to track progress)

startup looking for device terminate called after throwing an instance of 'tinyb::BluetoothException' what(): GDBus.Error:org.bluez.Error.Failed: Software caused connection abort found deviceAborted

the relevent section of code is bellow

std::cout << "startup\n";
BluetoothManager *manager = nullptr; //create manager try { manager = BluetoothManager::get_bluetooth_manager(); } catch(const std::runtime_error& e) { std::cout << "Error while initializing libtinyb: " << e.what() << std::endl; exit(1); }

bool ret = manager->start_discovery();
std::unique_ptr<BluetoothGattService> temperature_service;   //create service

std::string device_mac(argv[1]);   
std::cout << "looking for device\n";                                                       
auto sensor_tag = manager->find<BluetoothDevice>( nullptr, &device_mac,  nullptr,  std::chrono::milliseconds(3000));
std::cout << "found device";
if (sensor_tag ==  nullptr) {
    std::cout << "Device not found" << std::endl;
    return 1;
}

[petreeftime]

Hi, timeout works ok as far as I tested some time ago, but it's possible that it gets stuck in some BlueZ function, since the issue is that it returns a org.bluez.Error.Failed.

Can you tell me what version of BlueZ are you using, and does the error remain after restarting the BlueZ daemon?

[rlaybourn]

I am using blueZ version 5.39. Restarting the daemon does not have any affect on the problem. I did downgrade from bluez 5.4 so I guess it is possible there is something of that still laying around however everything else seems to be working fine. For now I am working around using a SIGALARM to implement a timeout.