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quicknet_latencyfaker.h
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quicknet_latencyfaker.h
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// Copyright (c) 2017 Santiago Fernandez Ortiz
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// implemented this separated to avoid code bloat in Peer
// FIXME: acknowledgments still get through
// FIXME: fake latency doesn't take real latency into account yet
//
#pragma once
#include <deque>
#include <stdint.h>
#include <memory>
#include "quicknet_address.h"
#include "quicknet_message.h"
namespace quicknet
{
class RemotePeer;
// FIXME: m_message should be a unique_ptr
class NetLatencyFakerEntry
{
public:
Message* m_message; // the actual message
Address m_address; // where did it come from
uint64_t m_timeStamp; // when did it arrive
};
class NetLatencyFaker
{
public:
NetLatencyFaker();
~NetLatencyFaker();
void SetLatency(uint32_t milliseconds) { m_latency = milliseconds; }
uint32_t CurrentLatency() const { return m_latency; }
// get a message which timestamp expired within the fake latency
void GetMessageReady(std::unique_ptr<Message>& message, Address& address);
// add a new message to the queue waiting to "arrive"
void AddPendingMessage(std::unique_ptr<Message> message, RemotePeer* peer);
private:
bool shouldArrive(const NetLatencyFakerEntry& entry);
// fake latency set
uint32_t m_latency;
// messages pending to "arrive"
std::deque<NetLatencyFakerEntry> m_entries;
};
}