mirror of
https://github.com/kidfromjupiter/nearby.git
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126 lines
4.5 KiB
C++
126 lines
4.5 KiB
C++
// Copyright 2020 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_WIFI_HOTSPOT_SOCKET_H_
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#define PLATFORM_IMPL_WINDOWS_WIFI_HOTSPOT_SOCKET_H_
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// Windows headers
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#include <windows.h>
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#include <winsock2.h>
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#include <wlanapi.h>
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// Standard C/C++ headers
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#include <cstddef>
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#include <cstdint>
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#include <exception>
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#include <memory>
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#include <string>
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#include <utility>
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// Nearby connections headers
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#include "absl/base/nullability.h"
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#include "absl/base/thread_annotations.h"
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#include "absl/functional/any_invocable.h"
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#include "internal/platform/byte_array.h"
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#include "internal/platform/cancellation_flag.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/implementation/wifi_hotspot.h"
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#include "internal/platform/implementation/windows/nearby_client_socket.h"
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#include "internal/platform/implementation/windows/socket_address.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::windows {
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// WifiHotspotSocket wraps the socket functions to read and write stream.
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// In WiFi HOTSPOT, A WifiHotspotSocket will be passed to
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// StartAcceptingConnections's callback when Winsock Server Socket receives a
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// new connection. When call API to connect to remote WiFi Hotspot service, also
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// will return a WifiHotspotSocket to caller.
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class WifiHotspotSocket : public api::WifiHotspotSocket {
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public:
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WifiHotspotSocket();
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explicit WifiHotspotSocket(
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absl_nonnull std::unique_ptr<NearbyClientSocket> socket);
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WifiHotspotSocket(WifiHotspotSocket&&) = default;
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~WifiHotspotSocket() override;
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WifiHotspotSocket& operator=(WifiHotspotSocket&&) = default;
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// Returns the InputStream of the WifiHotspotSocket.
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// On error, returned stream will report Exception::kIo on any operation.
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//
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// The returned object is not owned by the caller, and can be invalidated once
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// the WifiHotspotSocket object is destroyed.
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InputStream& GetInputStream() override { return input_stream_; }
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// Returns the OutputStream of the WifiHotspotSocket.
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// On error, returned stream will report Exception::kIo on any operation.
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//
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// The returned object is not owned by the caller, and can be invalidated once
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// the WifiHotspotSocket object is destroyed.
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OutputStream& GetOutputStream() override { return output_stream_; }
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// Returns Exception::kIo on error, Exception::kSuccess otherwise.
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Exception Close() override { return client_socket_->Close(); }
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bool Connect(const SocketAddress& server_address) {
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return client_socket_->Connect(server_address);
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}
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private:
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// A simple wrapper to handle input stream of socket
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class SocketInputStream : public InputStream {
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public:
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explicit SocketInputStream(NearbyClientSocket* absl_nonnull client_socket)
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: client_socket_(client_socket) {}
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~SocketInputStream() override = default;
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ExceptionOr<ByteArray> Read(std::int64_t size) override {
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return client_socket_->Read(size);
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}
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ExceptionOr<size_t> Skip(size_t offset) override {
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return client_socket_->Skip(offset);
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}
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Exception Close() override { return client_socket_->Close(); }
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private:
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NearbyClientSocket* absl_nonnull const client_socket_;
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};
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// A simple wrapper to handle output stream of socket
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class SocketOutputStream : public OutputStream {
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public:
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explicit SocketOutputStream(NearbyClientSocket* absl_nonnull client_socket)
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: client_socket_(client_socket) {}
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~SocketOutputStream() override = default;
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Exception Write(const ByteArray& data) override {
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return client_socket_->Write(data);
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}
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Exception Flush() override { return client_socket_->Flush(); }
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Exception Close() override { return client_socket_->Close(); }
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private:
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NearbyClientSocket* absl_nonnull const client_socket_;
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};
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absl_nonnull std::unique_ptr<NearbyClientSocket> client_socket_;
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SocketInputStream input_stream_;
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SocketOutputStream output_stream_;
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};
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} // namespace nearby::windows
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#endif // PLATFORM_IMPL_WINDOWS_WIFI_HOTSPOT_SOCKET_H_
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