i'm using two ble esp32,esp server takes 6sec to detect disconnection of esp client, how do i reduce this time to 1sec ?

[Vassimog]

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1.  
2. #include  <BLEDevice.h>
3. #include  <BLEUtils.h>
4. #include  <BLEServer.h>
5.  
6. #define  SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
7. #define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"
8.  
9. bool deviceConnected = false;
10.  
11. //Setup callbacks onConnect and onDisconnect
12. class MyServerCallbacks: public BLEServerCallbacks {
13.  void onConnect(BLEServer* pServer) {
14.     deviceConnected = true;
15.   };
16.   void onDisconnect(BLEServer* pServer) {
17.     deviceConnected = false;
18.     Serial.println("Client has disconnected");
19.     Serial.println("readvertising");
20.     BLEDevice::getAdvertising()->start();  // start advertising after disconnect
21.   }
22. };
23.  
24. void setup() {
25.   Serial.begin(115200);
26.   Serial.println("Starting BLE work!");
27.  
28.   BLEDevice::init("Long name works now");
29.   BLEServer *pServer = BLEDevice::createServer();
30.   BLEService *pService = pServer->createService(SERVICE_UUID);
31.   BLECharacteristic *pCharacteristic = pService->createCharacteristic(
32.                                          CHARACTERISTIC_UUID,
33.                                          BLECharacteristic::PROPERTY_READ |
34.                                          BLECharacteristic::PROPERTY_WRITE
35.                                        );
36.  
37.   pCharacteristic->setValue("Hello World says Neil");
38.   pService->start();
39.   // BLEAdvertising *pAdvertising = pServer->getAdvertising();  // this still is working for backward compatibility
40.   BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
41.   pAdvertising->addServiceUUID(SERVICE_UUID);
42.   pAdvertising->setScanResponse(true);
43.   pAdvertising->setMinPreferred(0x06);  // functions that help with iPhone connections issue
44.   pAdvertising->setMinPreferred(0x12);
45.   BLEDevice::startAdvertising();
46.   Serial.println"Characteristic defined! Now you can read it in your phone!");
47. }
48.  
49. void loop() {
50.   // put your main code here, to run repeatedly:
51. if(deviceConnected){
52. // code to be executed
53. }
54.  
55. }

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