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nearby/connections/implementation/wifi_direct_bwu_handler.h
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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CORE_INTERNAL_WIFI_DIRECT_BWU_HANDLER_H_
#define CORE_INTERNAL_WIFI_DIRECT_BWU_HANDLER_H_
#include <memory>
#include <string>
#include "connections/implementation/base_bwu_handler.h"
#include "connections/implementation/bwu_handler.h"
#include "connections/implementation/client_proxy.h"
#include "connections/implementation/endpoint_channel.h"
#include "connections/implementation/mediums/mediums.h"
#include "connections/implementation/mediums/wifi.h"
#include "connections/implementation/mediums/wifi_direct.h"
#include "internal/platform/byte_array.h"
#include "internal/platform/expected.h"
#include "internal/platform/wifi_direct.h"
#include "utility"
namespace nearby {
namespace connections {
// Defines the set of methods that need to be implemented to handle the
// per-Medium-specific operations needed to upgrade an EndpointChannel.
class WifiDirectBwuHandler : public BaseBwuHandler {
public:
explicit WifiDirectBwuHandler(
Mediums& mediums,
IncomingConnectionCallback incoming_connection_callback);
private:
class WifiDirectIncomingSocket : public BwuHandler::IncomingSocket {
public:
explicit WifiDirectIncomingSocket(const std::string& name,
WifiDirectSocket socket)
: name_(name), socket_(socket) {}
std::string ToString() override { return name_; }
void Close() override { socket_.Close(); }
private:
std::string name_;
WifiDirectSocket socket_;
};
// Called by BWU target. Retrieves a new medium info from incoming message,
// Windows doesn't support WIFIDirect as GC because phone side uses simplified
// WFD protocol to established connection while WINRT follow the standard WFD
// spec to achieve the connection. So return fail to stop the upgrade request
// from phone side.
ErrorOr<std::unique_ptr<EndpointChannel>>
CreateUpgradedEndpointChannel(ClientProxy* client,
const std::string& service_id,
const std::string& endpoint_id,
const UpgradePathInfo& upgrade_path_info) final;
location::nearby::proto::connections::Medium GetUpgradeMedium() const final {
return location::nearby::proto::connections::Medium::WIFI_DIRECT;
}
void OnEndpointDisconnect(ClientProxy* client,
const std::string& endpoint_id) final {}
// Called by BWU initiator. Set up WifiDirect upgraded medium for this
// endpoint, and returns a upgrade path info (SSID, Password, Gateway used as
// IPAddress, Port) for remote party to perform connection.
ByteArray HandleInitializeUpgradedMediumForEndpoint(
ClientProxy* client, const std::string& upgrade_service_id,
const std::string& endpoint_id) final;
// Revert the upgrade when the procedure fails or disconnection is called.
void HandleRevertInitiatorStateForService(
const std::string& upgrade_service_id) final;
// Accept Connection Callback.
void OnIncomingWifiDirectConnection(ClientProxy* client,
const std::string& upgrade_service_id,
WifiDirectSocket socket);
Mediums& mediums_;
Wifi& wifi_medium_ = mediums_.GetWifi();
WifiDirect& wifi_direct_medium_ = mediums_.GetWifiDirect();
};
} // namespace connections
} // namespace nearby
#endif // CORE_INTERNAL_WIFI_DIRECT_BWU_HANDLER_H_