Sanitas SBF70/SBF75 (GATT_INSUF_AUTHORIZATION) bug fix (#441)

set discovery/connect delay to one second and Bluetooth communication delay to 10ms

android_app/app/build.gradle

@@ -40,7 +40,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.google.android.material:material:1.1.0-alpha03'
+    implementation 'com.google.android.material:material:1.1.0-alpha04'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.appcompat:appcompat:1.0.2'
     implementation 'androidx.recyclerview:recyclerview:1.0.0'
@@ -52,8 +52,8 @@ dependencies {
     implementation 'com.j256.simplecsv:simplecsv:2.3'
 
     // RxAndroidBle
-    implementation 'com.polidea.rxandroidble2:rxandroidble:1.7.1'
+    implementation 'com.polidea.rxandroidble2:rxandroidble:1.8.2'
-    implementation 'io.reactivex.rxjava2:rxjava:2.2.2'
+    implementation 'io.reactivex.rxjava2:rxjava:2.2.7'
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
     implementation 'com.jakewharton.rx2:replaying-share:2.1.0'
 

android_app/app/src/main/java/com/health/openscale/core/OpenScale.java

@@ -105,7 +105,7 @@ public class OpenScale {
         fragmentList = new ArrayList<>();
         bleClient = RxBleClient.create(context);
 
-        RxBleClient.setLogLevel(RxBleLog.DEBUG);
+        RxBleClient.setLogLevel(RxBleLog.VERBOSE);
         RxBleLog.setLogger((level, tag, msg) -> Timber.tag(tag).log(level, msg));
 
         reopenDatabase(false);

android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothCommunication.java

@@ -35,6 +35,7 @@ import com.polidea.rxandroidble2.scan.ScanSettings;
 import java.io.IOException;
 import java.net.SocketException;
 import java.util.UUID;
+import java.util.concurrent.TimeUnit;
 
 import androidx.core.content.ContextCompat;
 import io.reactivex.Observable;
@@ -69,6 +70,7 @@ public abstract class BluetoothCommunication {
     protected Context context;
 
     private final int BT_RETRY_TIMES_ON_ERROR = 3;
+    private final int BT_DELAY_MS = 10;
 
     private RxBleClient bleClient;
     private RxBleDevice bleDevice;
@@ -239,6 +241,7 @@ public abstract class BluetoothCommunication {
                 .flatMapSingle(rxBleConnection -> rxBleConnection.writeCharacteristic(characteristic, bytes))
                 .subscribeOn(Schedulers.trampoline())
                 .observeOn(AndroidSchedulers.mainThread())
+                .delay(BT_DELAY_MS, TimeUnit.MILLISECONDS)
                 .retry(BT_RETRY_TIMES_ON_ERROR);
 
         compositeDisposable.add(observable.subscribe(
@@ -267,6 +270,7 @@ public abstract class BluetoothCommunication {
                 .flatMap(rxBleConnection -> rxBleConnection.readCharacteristic(characteristic))
                 .subscribeOn(Schedulers.trampoline())
                 .observeOn(AndroidSchedulers.mainThread())
+                .delay(BT_DELAY_MS, TimeUnit.MILLISECONDS)
                 .retry(BT_RETRY_TIMES_ON_ERROR);
 
         compositeDisposable.add(observable
@@ -297,6 +301,7 @@ public abstract class BluetoothCommunication {
                 .flatMap(indicationObservable -> indicationObservable)
                 .subscribeOn(Schedulers.trampoline())
                 .observeOn(AndroidSchedulers.mainThread())
+                .delay(BT_DELAY_MS, TimeUnit.MILLISECONDS)
                 .retry(BT_RETRY_TIMES_ON_ERROR);
 
         compositeDisposable.add(observable.subscribe(
@@ -333,6 +338,7 @@ public abstract class BluetoothCommunication {
                 .flatMap(notificationObservable -> notificationObservable)
                 .subscribeOn(Schedulers.trampoline())
                 .observeOn(AndroidSchedulers.mainThread())
+                .delay(BT_DELAY_MS, TimeUnit.MILLISECONDS)
                 .retry(BT_RETRY_TIMES_ON_ERROR);
 
         compositeDisposable.add(observable.subscribe(
@@ -355,6 +361,7 @@ public abstract class BluetoothCommunication {
                 .flatMapSingle(RxBleConnection::discoverServices)
                 .subscribeOn(Schedulers.trampoline())
                 .observeOn(AndroidSchedulers.mainThread())
+                .delay(BT_DELAY_MS, TimeUnit.MILLISECONDS)
                 .retry(BT_RETRY_TIMES_ON_ERROR);
 
         compositeDisposable.add(observable.subscribe(
@@ -520,7 +527,7 @@ public abstract class BluetoothCommunication {
                     resetDisconnectTimer();
                 }
             }
-        }, 500);
+        }, 1000);
     }
 
     private void setBtMonitoringOn() {