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- // Copyright 2015 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
- #define CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
- #include <memory>
- #include "base/memory/ref_counted_delete_on_sequence.h"
- #include "base/observer_list_threadsafe.h"
- #include "base/task/sequenced_task_runner_helpers.h"
- #include "base/time/time.h"
- #include "chromecast/net/time_sync_tracker.h"
- namespace base {
- class SingleThreadTaskRunner;
- }
- namespace network {
- class PendingSharedURLLoaderFactory;
- class NetworkConnectionTracker;
- } // namespace network
- namespace chromecast {
- // Checks if internet connectivity is available.
- class ConnectivityChecker
- : public base::RefCountedDeleteOnSequence<ConnectivityChecker> {
- public:
- class ConnectivityObserver {
- public:
- ConnectivityObserver(const ConnectivityObserver&) = delete;
- ConnectivityObserver& operator=(const ConnectivityObserver&) = delete;
- // Will be called when internet connectivity changes.
- virtual void OnConnectivityChanged(bool connected) = 0;
- protected:
- ConnectivityObserver() {}
- virtual ~ConnectivityObserver() {}
- };
- class ConnectivityCheckFailureObserver {
- public:
- ConnectivityCheckFailureObserver(const ConnectivityCheckFailureObserver&) =
- delete;
- ConnectivityCheckFailureObserver& operator=(
- const ConnectivityCheckFailureObserver&) = delete;
- // will be called when connectivity check failed.
- virtual void OnConnectivityCheckFailed() = 0;
- protected:
- ConnectivityCheckFailureObserver() = default;
- virtual ~ConnectivityCheckFailureObserver() = default;
- };
- static scoped_refptr<ConnectivityChecker> Create(
- const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
- std::unique_ptr<network::PendingSharedURLLoaderFactory>
- pending_url_loader_factory,
- network::NetworkConnectionTracker* network_connection_tracker,
- TimeSyncTracker* time_sync_tracker = nullptr);
- // Static factory with additional parameters for connectivity check period
- // - disconnected_probe_period:
- // connectivity check period while disconnected.
- // - connected_probe_period:
- // connectivity check period while connected.
- static scoped_refptr<ConnectivityChecker> Create(
- const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
- std::unique_ptr<network::PendingSharedURLLoaderFactory>
- pending_url_loader_factory,
- network::NetworkConnectionTracker* network_connection_tracker,
- base::TimeDelta disconnected_probe_period,
- base::TimeDelta connected_probe_period,
- TimeSyncTracker* time_sync_tracker = nullptr);
- ConnectivityChecker(const ConnectivityChecker&) = delete;
- ConnectivityChecker& operator=(const ConnectivityChecker&) = delete;
- void AddConnectivityObserver(ConnectivityObserver* observer);
- void RemoveConnectivityObserver(ConnectivityObserver* observer);
- void AddConnectivityCheckFailureObserver(
- ConnectivityCheckFailureObserver* observer);
- void RemoveConnectivityCheckFailureObserver(
- ConnectivityCheckFailureObserver* observer);
- // Returns if there is internet connectivity.
- virtual bool Connected() const = 0;
- // Checks for connectivity.
- virtual void Check() = 0;
- protected:
- explicit ConnectivityChecker(
- scoped_refptr<base::SingleThreadTaskRunner> task_runner);
- virtual ~ConnectivityChecker();
- // Notifies observes that connectivity has changed.
- void Notify(bool connected);
- // Notifies observers that connectivity check failed.
- void NotifyCheckFailure();
- private:
- friend class base::RefCountedDeleteOnSequence<ConnectivityChecker>;
- friend class base::DeleteHelper<ConnectivityChecker>;
- const scoped_refptr<base::ObserverListThreadSafe<ConnectivityObserver>>
- connectivity_observer_list_;
- const scoped_refptr<
- base::ObserverListThreadSafe<ConnectivityCheckFailureObserver>>
- connectivity_check_failure_observer_list_;
- };
- } // namespace chromecast
- #endif // CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
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