mirror of
https://github.com/kidfromjupiter/nearby.git
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130 lines
4.8 KiB
C++
130 lines
4.8 KiB
C++
// Copyright 2020-2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PLATFORM_IMPL_WINDOWS_BLUETOOTH_CLASSIC_SOCKET_H_
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#define PLATFORM_IMPL_WINDOWS_BLUETOOTH_CLASSIC_SOCKET_H_
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#include <windows.h>
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#include <cstdint>
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#include <memory>
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#include "absl/strings/string_view.h"
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#include "internal/platform/byte_array.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/implementation/bluetooth_classic.h"
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#include "internal/platform/implementation/windows/bluetooth_classic_device.h"
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#include "internal/platform/implementation/windows/generated/winrt/Windows.Foundation.h"
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#include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Sockets.h"
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#include "internal/platform/implementation/windows/generated/winrt/Windows.Storage.Streams.h"
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#include "internal/platform/input_stream.h"
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#include "internal/platform/output_stream.h"
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namespace nearby {
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namespace windows {
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class BluetoothSocket : public api::BluetoothSocket {
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public:
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BluetoothSocket();
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explicit BluetoothSocket(
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::winrt::Windows::Networking::Sockets::StreamSocket stream_socket);
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~BluetoothSocket() override;
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// NOTE:
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// It is an undefined behavior if GetInputStream() or GetOutputStream() is
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// called for a not-connected BluetoothSocket, i.e. any object that is not
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// returned by BluetoothClassicMedium::ConnectToService() for client side or
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// BluetoothServerSocket::Accept() for server side of connection.
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// Returns the InputStream of this connected BluetoothSocket.
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InputStream& GetInputStream() override;
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// Returns the OutputStream of this connected BluetoothSocket.
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OutputStream& GetOutputStream() override;
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// Closes both input and output streams, marks Socket as closed.
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// After this call object should be treated as not connected.
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// Returns Exception::kIo on error, Exception::kSuccess otherwise.
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Exception Close() override;
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// https://developer.android.com/reference/android/bluetooth/BluetoothSocket.html#getRemoteDevice()
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// Returns valid BluetoothDevice pointer if there is a connection, and
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// nullptr otherwise.
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api::BluetoothDevice* GetRemoteDevice() override;
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// Connect asynchronously to the target remote device
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// Returns true if successful, false otherwise
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bool Connect(::winrt::Windows::Networking::HostName connection_host_name,
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::winrt::hstring connection_service_name);
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private:
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static constexpr int kInitialTransmitPacketSize = 4096;
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class BluetoothInputStream : public InputStream {
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public:
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explicit BluetoothInputStream(
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::winrt::Windows::Storage::Streams::IInputStream stream);
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~BluetoothInputStream() override = default;
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ExceptionOr<ByteArray> Read(std::int64_t size) override;
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Exception Close() override;
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private:
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::winrt::Windows::Storage::Streams::IInputStream winrt_input_stream_{
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nullptr};
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::winrt::Windows::Storage::Streams::Buffer read_buffer_{
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kInitialTransmitPacketSize};
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};
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class BluetoothOutputStream : public OutputStream {
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public:
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explicit BluetoothOutputStream(
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::winrt::Windows::Storage::Streams::IOutputStream stream);
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~BluetoothOutputStream() override = default;
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Exception Write(absl::string_view data) override;
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Exception Flush() override;
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Exception Close() override;
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private:
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::winrt::Windows::Storage::Streams::IOutputStream winrt_output_stream_{
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nullptr};
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::winrt::Windows::Storage::Streams::Buffer write_buffer_{
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kInitialTransmitPacketSize};
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};
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bool InternalConnect(
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::winrt::Windows::Networking::HostName connection_host_name,
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::winrt::hstring connection_service_name);
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::winrt::fire_and_forget Listener_ConnectionStatusChanged(
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::winrt::Windows::Devices::Bluetooth::BluetoothDevice device,
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::winrt::Windows::Foundation::IInspectable const& args);
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::winrt::Windows::Networking::Sockets::StreamSocket windows_socket_{nullptr};
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bool is_bluetooth_socket_closed_ = false;
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BluetoothInputStream input_stream_{nullptr};
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BluetoothOutputStream output_stream_{nullptr};
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std::unique_ptr<BluetoothDevice> bluetooth_device_ = nullptr;
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::winrt::Windows::Devices::Bluetooth::BluetoothDevice
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native_bluetooth_device_{nullptr};
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::winrt::event_token connection_status_changed_token_{};
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};
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} // namespace windows
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} // namespace nearby
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#endif // PLATFORM_IMPL_WINDOWS_BLUETOOTH_CLASSIC_SOCKET_H_
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