NimBLEServerCallbacks won't call onConnect(BLEServer*, NimBLEConnInfo&)

[bmedici]

Hi,

I'm using this library in version 1.4.1 and identified an unexpected behaviour with server callbacks.

Here is the init code I'm using:

class ServerCallbacks: public NimBLEServerCallbacks {
    void onConnect(BLEServer* pServer) {
      deviceConnected = true;
    };

void loop() {
  log("deviceConnected: " + std::to_string(deviceConnected));
  }
}

BLEServer *pServer;
NimBLEDevice::init(BLE_NAME);
pServer = NimBLEDevice::createServer();
pServer->setCallbacks(new ServerCallbacks());

I implemented the server callbacks as shown and, in this situation, the deviceConnected variable is correctly set when my android device connects:

ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
// Android device connecting
ble-master | deviceConnected: 1
// The callback is called
ble-master | deviceConnected: 1
ble-master | deviceConnected: 1

On the other hand, while using the complete prototype for onConnect(BLEServer*, NimBLEConnInfo&), the callback is not called at all. With:

class ServerCallbacks: public NimBLEServerCallbacks {
    void onConnect(BLEServer* pServer, NimBLEConnInfo& connInfo) {
      deviceConnected = true;
    };
}

nothing happens

ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
// Android device connecting
ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
ble-master | deviceConnected: 0
// Nothing happens

I double checked that the only difference between both tests is changing the function prototype from onConnect(BLEServer* pServer) to onConnect(BLEServer* pServer, NimBLEConnInfo& connInfo).

As I need the connInfoparameter, this bug is a bit annoying.

Any idea ?

[h2zero]

You are using v1.4.1, try switching to the master branch if you want to use the latest function signature, otherwise change to the old sig that takes the ble_conn_desc struct.

[REEASD]

you can add override. class ServerCallbacks: public NimBLEServerCallbacks { void onConnect(BLEServer* pServer,BLEConnInfo& connInfo) override { deviceConnected = true; };

void loop() { log("deviceConnected: " + std::to_string(deviceConnected)); } }