overrode some virtual functions

internal/platform/implementation/linux/ble_v2.h

@@ -0,0 +1,69 @@
+#include "internal/platform/implementation/ble_v2.h"
+
+namespace nearby {
+namespace linux {
+class BleV2Peripheral : public api::ble_v2::BlePeripheral
+{
+  std::string GetAddress() const override;
+  UniqueId GetUniqueId() const override;
+
+};
+
+class GattClient: public api::ble_v2::GattClient
+{
+  bool DiscoverServiceAndCharacteristics(const Uuid& service_uuid, const std::vector<Uuid>& characteristic_uuids) override;
+
+  absl::optional<api::ble_v2::GattCharacteristic>
+  GetCharacteristic(const Uuid& service_uuid, const Uuid& characteristic_uuid) override;
+
+  absl::optional<std::string>
+  ReadCharacteristic(const api::ble_v2::GattCharacteristic& characteristic) override;
+
+  bool WriteCharacteristic(
+    const api::ble_v2::GattCharacteristic& characteristic,
+    absl::string_view value, WriteType type) override;
+
+  bool SetCharacteristicSubscription(
+    const api::ble_v2::GattCharacteristic& characteristic,
+    bool enable, absl::AnyInvocable<void(absl::string_view value)> on_characteristic_changed_cb)
+  override;
+
+  void Disconnect() override;
+};
+
+class GattServer : public api::ble_v2::GattServer
+{
+  api::ble_v2::BlePeripheral& GetBlePeripheral() override;
+
+  absl::optional<api::ble_v2::GattCharacteristic> CreateCharacteristic(
+    const Uuid& service_uuid, const Uuid& characteristic_uuid,
+    api::ble_v2::GattCharacteristic::Permission permission,
+    api::ble_v2::GattCharacteristic::Property property)
+  override;
+
+  bool UpdateCharacteristic(
+    const api::ble_v2::GattCharacteristic& characteristic, const nearby::ByteArray& value)
+  override;
+
+  absl::Status NotifyCharacteristicChanged(
+    const api::ble_v2::GattCharacteristic& characteristic, bool confirm,
+    const ByteArray& new_value)
+  override;
+
+  void Stop() override;
+};
+
+class BleV2Socket: public api::ble_v2::BleSocket
+{
+  InputStream& GetInputStream() override;
+  OutputStream& GetOutputStream() override;
+  Exception Close() override;
+};
+
+class BleV2ServerSocket: public api::ble_v2::BleServerSocket
+{
+  std::unique_ptr<api::ble_v2::BleSocket> Accept() override;
+  Exception Close() override;
+};
+}
+}