mirror of
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121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_NQE_SOCKET_WATCHER_H_
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#define NET_NQE_SOCKET_WATCHER_H_
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#include <memory>
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#include "base/callback.h"
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#include "base/memory/ref_counted.h"
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#include "base/memory/weak_ptr.h"
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#include "base/optional.h"
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#include "base/threading/thread_checker.h"
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#include "base/time/time.h"
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#include "net/base/net_export.h"
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#include "net/nqe/network_quality_estimator_util.h"
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#include "net/socket/socket_performance_watcher.h"
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#include "net/socket/socket_performance_watcher_factory.h"
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namespace base {
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class SingleThreadTaskRunner;
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class TickClock;
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class TimeDelta;
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} // namespace base
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namespace net {
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class AddressList;
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namespace {
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typedef base::Callback<void(SocketPerformanceWatcherFactory::Protocol protocol,
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const base::TimeDelta& rtt,
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const base::Optional<nqe::internal::IPHash>& host)>
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OnUpdatedRTTAvailableCallback;
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typedef base::Callback<bool(base::TimeTicks)> ShouldNotifyRTTCallback;
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} // namespace
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namespace nqe {
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namespace internal {
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// SocketWatcher implements SocketPerformanceWatcher, and is not thread-safe.
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class NET_EXPORT_PRIVATE SocketWatcher : public SocketPerformanceWatcher {
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public:
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// Creates a SocketWatcher which can be used to watch a socket that uses
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// |protocol| as the transport layer protocol. The socket watcher will call
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// |updated_rtt_observation_callback| on |task_runner| every time a new RTT
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// observation is available. |address_list| is the list of addresses that
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// the socket may connect to. |min_notification_interval| is the minimum
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// interval betweeen consecutive notifications to this socket watcher.
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// |allow_rtt_private_address| is true if |updated_rtt_observation_callback|
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// should be called when RTT observation from a socket connected to private
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// address is received. |tick_clock| is guaranteed to be non-null.
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// |should_notify_rtt_callback| callback should be called back on
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// |task_runner| by the created socket watchers to check if RTT observation
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// should be taken and notified.
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SocketWatcher(SocketPerformanceWatcherFactory::Protocol protocol,
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const AddressList& address_list,
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base::TimeDelta min_notification_interval,
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bool allow_rtt_private_address,
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scoped_refptr<base::SingleThreadTaskRunner> task_runner,
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OnUpdatedRTTAvailableCallback updated_rtt_observation_callback,
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ShouldNotifyRTTCallback should_notify_rtt_callback,
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const base::TickClock* tick_clock);
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~SocketWatcher() override;
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// SocketPerformanceWatcher implementation:
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bool ShouldNotifyUpdatedRTT() const override;
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void OnUpdatedRTTAvailable(const base::TimeDelta& rtt) override;
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void OnConnectionChanged() override;
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private:
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// Transport layer protocol used by the socket that |this| is watching.
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const SocketPerformanceWatcherFactory::Protocol protocol_;
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scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
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// Called every time a new RTT observation is available.
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OnUpdatedRTTAvailableCallback updated_rtt_observation_callback_;
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// Called to determine if the RTT notification should be notified using
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// |updated_rtt_observation_callback_|.
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ShouldNotifyRTTCallback should_notify_rtt_callback_;
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// Minimum interval betweeen consecutive incoming notifications.
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const base::TimeDelta rtt_notifications_minimum_interval_;
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// True if the RTT observations from this socket can be notified using
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// |updated_rtt_observation_callback_|.
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const bool run_rtt_callback_;
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// Time when this was last notified of updated RTT.
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base::TimeTicks last_rtt_notification_;
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const base::TickClock* tick_clock_;
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base::ThreadChecker thread_checker_;
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// True if the first RTT notification from the QUIC connection has been
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// received.
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bool first_quic_rtt_notification_received_;
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// A unique identifier for the remote host that this socket connects to.
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const base::Optional<IPHash> host_;
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DISALLOW_COPY_AND_ASSIGN(SocketWatcher);
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};
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} // namespace internal
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} // namespace nqe
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} // namespace net
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#endif // NET_NQE_SOCKET_WATCHER_H_
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