naiveproxy/net/quic/chromium/quic_clock_skew_detector.h
2018-02-02 05:49:39 -05:00

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// Copyright (c) 2012 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 NET_QUIC_CHROMIUM_QUIC_CLOCK_SKEW_DETECTOR_H_
#define NET_QUIC_CHROMIUM_QUIC_CLOCK_SKEW_DETECTOR_H_
#include "base/time/time.h"
#include "net/base/net_export.h"
namespace net {
class NET_EXPORT_PRIVATE QuicClockSkewDetector {
public:
QuicClockSkewDetector(base::TimeTicks ticks_time, base::Time wall_time);
// Returns true if the delta between |wall_now| and |last_wall_time_| is
// more than one second larger than the delta between |ticks_now| and
// |last_ticks_time_|. Updates |last_ticks_time_| and |last_wall_time_|.
bool ClockSkewDetected(base::TimeTicks ticks_now, base::Time wall_now);
private:
// Clock skew detection members
base::TimeTicks last_ticks_time_;
base::Time last_wall_time_;
};
} // namespace net
#endif // NET_QUIC_CHROMIUM_QUIC_CLOCK_SKEW_DETECTOR_H_