mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-16 15:36:12 -04:00
128 lines
5.0 KiB
C++
128 lines
5.0 KiB
C++
// 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_MEDIUMS_WIFI_DIRECT_H_
|
|
#define CORE_INTERNAL_MEDIUMS_WIFI_DIRECT_H_
|
|
|
|
#include <cstdint>
|
|
#include <functional>
|
|
#include <string>
|
|
|
|
#include "internal/platform/multi_thread_executor.h"
|
|
#include "internal/platform/mutex.h"
|
|
#include "internal/platform/wifi_direct.h"
|
|
#include "internal/platform/wifi_hotspot.h"
|
|
|
|
namespace location {
|
|
namespace nearby {
|
|
namespace connections {
|
|
|
|
class WifiDirect {
|
|
public:
|
|
// Callback that is invoked when a new connection is accepted.
|
|
struct AcceptedConnectionCallback {
|
|
std::function<void(const std::string& service_id, WifiHotspotSocket socket)>
|
|
accepted_cb = DefaultCallback<const std::string&, WifiHotspotSocket>();
|
|
};
|
|
|
|
WifiDirect() : is_go_started_(false), is_connected_to_go_(false) {}
|
|
~WifiDirect();
|
|
// Not copyable or movable
|
|
WifiDirect(const WifiDirect&) = delete;
|
|
WifiDirect& operator=(const WifiDirect&) = delete;
|
|
WifiDirect(WifiDirect&&) = delete;
|
|
WifiDirect& operator=(WifiDirect&&) = delete;
|
|
|
|
// Returns true, if WifiDirect Group Owner is supported by a platform.
|
|
bool IsGOAvailable() const ABSL_LOCKS_EXCLUDED(mutex_);
|
|
// Returns true, if WifiDirect Group Client is supported by a platform.
|
|
bool IsGCAvailable() const ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// If WifiDirect Group Owner started
|
|
bool IsGOStarted() ABSL_LOCKS_EXCLUDED(mutex_);
|
|
// Start WifiDirect Group Owner. Returns true if AutoGO is successfully
|
|
// started.
|
|
bool StartWifiDirect() ABSL_LOCKS_EXCLUDED(mutex_);
|
|
// Stop WifiDirect Group Owner
|
|
bool StopWifiDirect() ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// If WifiDirect Group Client connects to Group Owner
|
|
bool IsConnectedToGO() ABSL_LOCKS_EXCLUDED(mutex_);
|
|
// WifiDirect Group Client request to connect to the Group Owner
|
|
bool ConnectWifiDirect(const std::string& ssid, const std::string& password)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
// WifiDirect Group Client request to disconnect from the Group Owner
|
|
bool DisconnectWifiDirect() ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// Starts a worker thread, creates a WifiDirect socket, associates it with a
|
|
// service id.
|
|
bool StartAcceptingConnections(const std::string& service_id,
|
|
AcceptedConnectionCallback callback)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// Closes socket corresponding to a service id.
|
|
bool StopAcceptingConnections(const std::string& service_id)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
bool IsAcceptingConnections(const std::string& service_id)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// Establishes connection to WifiDirect service by ip address and port for
|
|
// bandwidth upgradation.
|
|
// Returns socket instance. On success, WifiDirectSocket.IsValid() return
|
|
// true.
|
|
WifiHotspotSocket Connect(const std::string& service_id,
|
|
const std::string& ip_address, int port,
|
|
CancellationFlag* cancellation_flag)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
// Gets SoftAP ssid + password + ip address + gateway + port etc for remote
|
|
// services on the network to identify and connect to this service.
|
|
// Credential is for the currently-hosted WiFi SoftAP ServerSocket (if any).
|
|
HotspotCredentials* GetCredentials(absl::string_view service_id)
|
|
ABSL_LOCKS_EXCLUDED(mutex_);
|
|
|
|
private:
|
|
mutable Mutex mutex_;
|
|
static constexpr int kMaxConcurrentAcceptLoops = 5;
|
|
|
|
// Same as IsAvailable(), but must be called with mutex_ held.
|
|
bool IsGOAvailableLocked() const ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
|
|
bool IsGCAvailableLocked() const ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
|
|
// Same as IsAcceptingConnections(), but must be called with mutex_ held.
|
|
bool IsAcceptingConnectionsLocked(const std::string& service_id)
|
|
ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
|
|
|
|
bool is_go_started_ ABSL_GUARDED_BY(mutex_);
|
|
bool is_connected_to_go_ ABSL_GUARDED_BY(mutex_);
|
|
WifiDirectMedium medium_ ABSL_GUARDED_BY(mutex_);
|
|
|
|
// A thread pool dedicated to running all the accept loops from
|
|
// StartAcceptingConnections().
|
|
MultiThreadExecutor accept_loops_runner_{kMaxConcurrentAcceptLoops};
|
|
|
|
// A map of service_id -> ServerSocket. If map is non-empty, we
|
|
// are currently listening for incoming connections.
|
|
// WifiDirectServerSocket instances are used from accept_loops_runner_,
|
|
// and thus require pointer stability.
|
|
absl::flat_hash_map<std::string, WifiHotspotServerSocket> server_sockets_
|
|
ABSL_GUARDED_BY(mutex_);
|
|
};
|
|
|
|
} // namespace connections
|
|
} // namespace nearby
|
|
} // namespace location
|
|
|
|
#endif // CORE_INTERNAL_MEDIUMS_WIFI_DIRECT_H_
|