Some scan stuf

ykonsole-iconsole/src/main/kotlin/net/aiterp/git/ykonsole2/infrastructure/IConsole.kt

@@ -35,14 +35,16 @@ class IConsole : ActiveDriver() {
   private var btCommandInput: BluetoothGattCharacteristic? = null
 
   private fun onConnect(device: Device, output: FlowBus<Event>) {
-    tryingSince = Instant.now()
-
     if (!device.connectionString.startsWith("iconsole:")) {
       logger.info("Ignoring non-iConsole $device")
       return
     }
     val connectionString = device.connectionString.substring("iconsole:".length)
 
+    central?.stopScan()
+    current?.cancelConnection()
+    tryingSince = Instant.now()
+
     val cbPeripheral = object : BluetoothPeripheralCallback() {
       override fun onServicesDiscovered(peripheral: BluetoothPeripheral, services: MutableList<BluetoothGattService>) {
         logger.info("Checking device...")
@@ -156,9 +158,11 @@ class IConsole : ActiveDriver() {
       override fun onDiscoveredPeripheral(peripheral: BluetoothPeripheral, scanResult: ScanResult) {
         logger.info("Connecting to ${peripheral.name} (${peripheral.address})...")
 
-        tryingSince = null
-        central?.connectPeripheral(peripheral, cbPeripheral)
-        central?.stopScan()
+        if (tryingSince != null) {
+          tryingSince = null
+          central?.connectPeripheral(peripheral, cbPeripheral)
+          central?.stopScan()
+        }
       }
 
       override fun onDisconnectedPeripheral(peripheral: BluetoothPeripheral, status: BluetoothCommandStatus) {
@@ -167,6 +171,15 @@ class IConsole : ActiveDriver() {
           output.emitBlocking(Disconnected)
         }
       }
+
+      override fun onConnectionFailed(peripheral: BluetoothPeripheral, status: BluetoothCommandStatus) {
+        central?.stopScan()
+
+        runBlocking {
+          output.emit(ErrorOccurred("Failure: $status"))
+          output.emit(Disconnected)
+        }
+      }
     }
 
     central = BluetoothCentralManager(cbScan).apply {