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feat(Core/Movement): time synchronisation to better interpret client timestamps (#5300)

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This commit is contained in:
Chaouki Dhib
2021-04-23 15:53:09 +02:00
committed by GitHub
parent 970d371442
commit 2d21bfc915
11 changed files with 367 additions and 96 deletions
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19
src/server/game/Server/WorldSession.h
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@@ -15,6 +15,7 @@
#include "AuthDefines.h"
#include "AddonMgr.h"
#include "BanManager.h"
#include "CircularBuffer.h"
#include "Common.h"
#include "DatabaseEnv.h"
#include "GossipDef.h"
@@ -23,6 +24,7 @@
#include "World.h"
#include "WorldPacket.h"
#include <utility>
#include <map>
class Creature;
class GameObject;
@@ -124,7 +126,7 @@ public:
virtual ~PacketFilter() = default;
virtual bool Process(WorldPacket* /*packet*/) { return true; }
[[nodiscard]] virtual bool ProcessLogout() const { return true; }
[[nodiscard]] virtual bool ProcessUnsafe() const { return true; }
protected:
WorldSession* const m_pSession;
@@ -138,7 +140,7 @@ public:
bool Process(WorldPacket* packet) override;
//in Map::Update() we do not process player logout!
[[nodiscard]] bool ProcessLogout() const override { return false; }
[[nodiscard]] bool ProcessUnsafe() const override { return false; }
};
//class used to filer only thread-unsafe packets from queue
@@ -357,7 +359,6 @@ public:
uint32 GetLatency() const { return m_latency; }
void SetLatency(uint32 latency) { m_latency = latency; }
void ResetClientTimeDelay() { m_clientTimeDelay = 0; }
std::atomic<time_t> m_timeOutTime;
void UpdateTimeOutTime(uint32 diff)
@@ -387,6 +388,9 @@ public:
time_t GetCalendarEventCreationCooldown() const { return _calendarEventCreationCooldown; }
void SetCalendarEventCreationCooldown(time_t cooldown) { _calendarEventCreationCooldown = cooldown; }
// Time Synchronisation
void ResetTimeSync();
void SendTimeSync();
public: // opcodes handlers
void Handle_NULL(WorldPacket& recvPacket); // not used
void Handle_EarlyProccess(WorldPacket& recvPacket); // just mark packets processed in WorldSocket::OnRead
@@ -1028,7 +1032,6 @@ private:
LocaleConstant m_sessionDbcLocale;
LocaleConstant m_sessionDbLocaleIndex;
uint32 m_latency;
uint32 m_clientTimeDelay;
AccountData m_accountData[NUM_ACCOUNT_DATA_TYPES];
uint32 m_Tutorials[MAX_ACCOUNT_TUTORIAL_VALUES];
bool m_TutorialsChanged;
@@ -1044,6 +1047,14 @@ private:
bool _shouldSetOfflineInDB;
// Packets cooldown
time_t _calendarEventCreationCooldown;
CircularBuffer<std::pair<int64, uint32>> _timeSyncClockDeltaQueue; // first member: clockDelta. Second member: latency of the packet exchange that was used to compute that clockDelta.
int64 _timeSyncClockDelta;
void ComputeNewClockDelta();
std::map<uint32, uint32> _pendingTimeSyncRequests; // key: counter. value: server time when packet with that counter was sent.
uint32 _timeSyncNextCounter;
uint32 _timeSyncTimer;
};
#endif
/// @}