bluetooth: Invalidate services upon disconnection

third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/bluetooth/BluetoothRemoteGATTService.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "modules/bluetooth/BluetoothError.h"
 #include "modules/bluetooth/BluetoothRemoteGATTCharacteristic.h"
 #include "modules/bluetooth/BluetoothSupplement.h"
 #include "modules/bluetooth/BluetoothUUID.h"
 #include "public/platform/modules/bluetooth/WebBluetooth.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 #include <utility>
 
 namespace blink {
 
 namespace {
 
 const char kGATTServerDisconnected[] =
     "GATT Server disconnected while retrieving characteristics.";
 const char kGATTServerNotConnected[] =
     "GATT Server is disconnected. Cannot retrieve characteristics.";
+const char kInvalidService[] =
+    "Service is no longer valid. Remember to retrieve the service again after "
+    "reconnecting.";
 
 }  // namespace
 
 BluetoothRemoteGATTService::BluetoothRemoteGATTService(
     std::unique_ptr<WebBluetoothRemoteGATTService> webService,
     BluetoothDevice* device)
     : m_webService(std::move(webService)), m_device(device) {
   DCHECK(m_webService);
 }
 
@@ skipping 113 matching lines @@
 ScriptPromise BluetoothRemoteGATTService::getCharacteristicsImpl(
     ScriptState* scriptState,
     mojom::blink::WebBluetoothGATTQueryQuantity quantity,
     String characteristicsUUID) {
   if (!device()->gatt()->connected()) {
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(NetworkError, kGATTServerNotConnected));
   }
 
+  if (!device()->isValidService(m_webService->serviceInstanceID)) {
+    return ScriptPromise::rejectWithDOMException(
+        scriptState, DOMException::create(InvalidStateError, kInvalidService));
+  }
+
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
   ScriptPromise promise = resolver->promise();
 
   WebBluetooth* webbluetooth =
       BluetoothSupplement::fromScriptState(scriptState);
   webbluetooth->getCharacteristics(
       m_webService->serviceInstanceID, static_cast<int32_t>(quantity),
       characteristicsUUID,
       new GetCharacteristicsCallback(this, quantity, resolver));
 
   return promise;
 }
 
 }  // namespace blink