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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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50
src/server/game/Server/WorldSession.cpp
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@@ -110,14 +110,16 @@ WorldSession::WorldSession(uint32 id, WorldSocket* sock, AccountTypes sec, uint8
m_sessionDbcLocale(sWorld->GetDefaultDbcLocale()),
m_sessionDbLocaleIndex(locale),
m_latency(0),
m_clientTimeDelay(0),
m_TutorialsChanged(false),
recruiterId(recruiter),
isRecruiter(isARecruiter),
m_currentVendorEntry(0),
m_currentBankerGUID(0),
timeWhoCommandAllowed(0),
_calendarEventCreationCooldown(0)
_calendarEventCreationCooldown(0),
_timeSyncClockDeltaQueue(6),
_timeSyncClockDelta(0),
_pendingTimeSyncRequests()
{
memset(m_Tutorials, 0, sizeof(m_Tutorials));
@@ -126,6 +128,9 @@ WorldSession::WorldSession(uint32 id, WorldSocket* sock, AccountTypes sec, uint8
_kicked = false;
_shouldSetOfflineInDB = true;
_timeSyncNextCounter = 0;
_timeSyncTimer = 0;
if (sock)
{
m_Address = sock->GetRemoteAddress();
@@ -253,7 +258,7 @@ void WorldSession::QueuePacket(WorldPacket* new_packet)
/// Update the WorldSession (triggered by World update)
bool WorldSession::Update(uint32 diff, PacketFilter& updater)
{
if (updater.ProcessLogout())
if (updater.ProcessUnsafe())
{
UpdateTimeOutTime(diff);
@@ -263,7 +268,7 @@ bool WorldSession::Update(uint32 diff, PacketFilter& updater)
m_Socket->CloseSocket("Client didn't send anything for too long");
}
HandleTeleportTimeout(updater.ProcessLogout());
HandleTeleportTimeout(updater.ProcessUnsafe());
uint32 _startMSTime = getMSTime();
WorldPacket* packet = nullptr;
@@ -390,7 +395,7 @@ bool WorldSession::Update(uint32 diff, PacketFilter& updater)
if (m_Socket && !m_Socket->IsClosed())
ProcessQueryCallbacks();
if (updater.ProcessLogout())
if (updater.ProcessUnsafe())
{
if (m_Socket && !m_Socket->IsClosed() && _warden)
{
@@ -415,6 +420,22 @@ bool WorldSession::Update(uint32 diff, PacketFilter& updater)
}
}
if (!updater.ProcessUnsafe()) // <=> updater is of type MapSessionFilter
{
// Send time sync packet every 10s.
if (_timeSyncTimer > 0)
{
if (diff >= _timeSyncTimer)
{
SendTimeSync();
}
else
{
_timeSyncTimer -= diff;
}
}
}
return true;
}
@@ -1648,3 +1669,22 @@ uint32 WorldSession::DosProtection::GetMaxPacketCounterAllowed(uint16 opcode) co
return maxPacketCounterAllowed;
}
void WorldSession::ResetTimeSync()
{
_timeSyncNextCounter = 0;
_pendingTimeSyncRequests.clear();
}
void WorldSession::SendTimeSync()
{
WorldPacket data(SMSG_TIME_SYNC_REQ, 4);
data << uint32(_timeSyncNextCounter);
SendPacket(&data);
_pendingTimeSyncRequests[_timeSyncNextCounter] = getMSTime();
// Schedule next sync in 10 sec (except for the 2 first packets, which are spaced by only 5s)
_timeSyncTimer = _timeSyncNextCounter == 0 ? 5000 : 10000;
_timeSyncNextCounter++;
}