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ReliabilityLayer.cpp
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ReliabilityLayer.cpp
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/*
* Copyright (c) 2014, Oculus VR, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
/// \file
///
#include "ReliabilityLayer.h"
#include "GetTime.h"
#include "SocketLayer.h"
#include "PluginInterface2.h"
#include "RakAssert.h"
#include "Rand.h"
#include "MessageIdentifiers.h"
#ifdef USE_THREADED_SEND
#include "SendToThread.h"
#endif
#include <math.h>
using namespace RakNet;
// Can't figure out which library has this function on the PS3
double Ceil(double d) {if (((double)((int)d))==d) return d; return (int) (d+1.0);}
// #if defined(new)
// #pragma push_macro("new")
// #undef new
// #define RELIABILITY_LAYER_NEW_UNDEF_ALLOCATING_QUEUE
// #endif
//#define _DEBUG_LOGGER
#if CC_TIME_TYPE_BYTES==4
static const CCTimeType MAX_TIME_BETWEEN_PACKETS= 350; // 350 milliseconds
static const CCTimeType HISTOGRAM_RESTART_CYCLE=10000; // Every 10 seconds reset the histogram
#else
static const CCTimeType MAX_TIME_BETWEEN_PACKETS= 350000; // 350 milliseconds
//static const CCTimeType HISTOGRAM_RESTART_CYCLE=10000000; // Every 10 seconds reset the histogram
#endif
static const int DEFAULT_HAS_RECEIVED_PACKET_QUEUE_SIZE=512;
static const CCTimeType STARTING_TIME_BETWEEN_PACKETS=MAX_TIME_BETWEEN_PACKETS;
//static const long double TIME_BETWEEN_PACKETS_INCREASE_MULTIPLIER_DEFAULT=.02;
//static const long double TIME_BETWEEN_PACKETS_DECREASE_MULTIPLIER_DEFAULT=1.0 / 9.0;
typedef uint32_t BitstreamLengthEncoding;
#ifdef _MSC_VER
#pragma warning( push )
#endif
//#define PRINT_TO_FILE_RELIABLE_ORDERED_TEST
#ifdef PRINT_TO_FILE_RELIABLE_ORDERED_TEST
static unsigned int packetNumber=0;
static FILE *fp=0;
#endif
//#define FLIP_SEND_ORDER_TEST
//#define LOG_TRIVIAL_NOTIFICATIONS
BPSTracker::TimeAndValue2::TimeAndValue2() {}
BPSTracker::TimeAndValue2::~TimeAndValue2() {}
BPSTracker::TimeAndValue2::TimeAndValue2(RakNet::TimeUS t, uint64_t v1) : value1(v1), time(t) {}
//BPSTracker::TimeAndValue2::TimeAndValue2(RakNet::TimeUS t, uint64_t v1, uint64_t v2) : time(t), value1(v1), value2(v2) {}
BPSTracker::BPSTracker() {Reset(_FILE_AND_LINE_);}
BPSTracker::~BPSTracker() {}
//void BPSTracker::Reset(const char *file, unsigned int line) {total1=total2=lastSec1=lastSec2=0; dataQueue.Clear(file,line);}
void BPSTracker::Reset(const char *file, unsigned int line) {total1=lastSec1=0; dataQueue.Clear(file,line);}
//void BPSTracker::Push2(RakNetTimeUS time, uint64_t value1, uint64_t value2) {dataQueue.Push(TimeAndValue2(time,value1,value2),_FILE_AND_LINE_); total1+=value1; lastSec1+=value1; total2+=value2; lastSec2+=value2;}
//uint64_t BPSTracker::GetBPS2(RakNetTimeUS time) {ClearExpired2(time); return lastSec2;}
//void BPSTracker::GetBPS1And2(RakNetTimeUS time, uint64_t &out1, uint64_t &out2) {ClearExpired2(time); out1=lastSec1; out2=lastSec2;}
uint64_t BPSTracker::GetTotal1(void) const {return total1;}
//uint64_t BPSTracker::GetTotal2(void) const {return total2;}
// void BPSTracker::ClearExpired2(RakNet::TimeUS time) {
// RakNet::TimeUS threshold=time;
// if (threshold < 1000000)
// return;
// threshold-=1000000;
// while (dataQueue.IsEmpty()==false && dataQueue.Peek().time < threshold)
// {
// lastSec1-=dataQueue.Peek().value1;
// lastSec2-=dataQueue.Peek().value2;
// dataQueue.Pop();
// }
// }
void BPSTracker::ClearExpired1(RakNet::TimeUS time)
{
while (dataQueue.IsEmpty()==false &&
#if CC_TIME_TYPE_BYTES==8
dataQueue.Peek().time+1000000 < time
#else
dataQueue.Peek().time+1000 < time
#endif
)
{
lastSec1-=dataQueue.Peek().value1;
dataQueue.Pop();
}
}
struct DatagramHeaderFormat
{
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
CCTimeType sourceSystemTime;
#endif
DatagramSequenceNumberType datagramNumber;
// Use floats to save bandwidth
// float B; // Link capacity
float AS; // Data arrival rate
bool isACK;
bool isNAK;
bool isPacketPair;
bool hasBAndAS;
bool isContinuousSend;
bool needsBAndAs;
bool isValid; // To differentiate between what I serialized, and offline data
static BitSize_t GetDataHeaderBitLength()
{
return BYTES_TO_BITS(GetDataHeaderByteLength());
}
static unsigned int GetDataHeaderByteLength()
{
//return 2 + 3 + sizeof(RakNet::TimeMS) + sizeof(float)*2;
return 2 + 3 +
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
sizeof(RakNetTimeMS) +
#endif
sizeof(float)*1;
}
void Serialize(RakNet::BitStream *b)
{
// Not endian safe
// RakAssert(GetDataHeaderByteLength()==sizeof(DatagramHeaderFormat));
// b->WriteAlignedBytes((const unsigned char*) this, sizeof(DatagramHeaderFormat));
// return;
b->Write(true); // IsValid
if (isACK)
{
b->Write(true);
b->Write(hasBAndAS);
b->AlignWriteToByteBoundary();
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
RakNet::TimeMS timeMSLow=(RakNet::TimeMS) sourceSystemTime&0xFFFFFFFF; b->Write(timeMSLow);
#endif
if (hasBAndAS)
{
// b->Write(B);
b->Write(AS);
}
}
else if (isNAK)
{
b->Write(false);
b->Write(true);
}
else
{
b->Write(false);
b->Write(false);
b->Write(isPacketPair);
b->Write(isContinuousSend);
b->Write(needsBAndAs);
b->AlignWriteToByteBoundary();
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
RakNet::TimeMS timeMSLow=(RakNet::TimeMS) sourceSystemTime&0xFFFFFFFF; b->Write(timeMSLow);
#endif
b->Write(datagramNumber);
}
}
void Deserialize(RakNet::BitStream *b)
{
// Not endian safe
// b->ReadAlignedBytes((unsigned char*) this, sizeof(DatagramHeaderFormat));
// return;
b->Read(isValid);
b->Read(isACK);
if (isACK)
{
isNAK=false;
isPacketPair=false;
b->Read(hasBAndAS);
b->AlignReadToByteBoundary();
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
RakNet::TimeMS timeMS; b->Read(timeMS); sourceSystemTime=(CCTimeType) timeMS;
#endif
if (hasBAndAS)
{
// b->Read(B);
b->Read(AS);
}
}
else
{
b->Read(isNAK);
if (isNAK)
{
isPacketPair=false;
}
else
{
b->Read(isPacketPair);
b->Read(isContinuousSend);
b->Read(needsBAndAs);
b->AlignReadToByteBoundary();
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
RakNet::TimeMS timeMS; b->Read(timeMS); sourceSystemTime=(CCTimeType) timeMS;
#endif
b->Read(datagramNumber);
}
}
}
};
#if !defined(__GNUC__) && !defined(__ARMCC)
#pragma warning(disable:4702) // unreachable code
#endif
#ifdef _WIN32
//#define _DEBUG_LOGGER
#ifdef _DEBUG_LOGGER
#include "WindowsIncludes.h"
#endif
#endif
//#define DEBUG_SPLIT_PACKET_PROBLEMS
#if defined (DEBUG_SPLIT_PACKET_PROBLEMS)
static int waitFlag=-1;
#endif
using namespace RakNet;
int RakNet::SplitPacketChannelComp( SplitPacketIdType const &key, SplitPacketChannel* const &data )
{
#if PREALLOCATE_LARGE_MESSAGES==1
if (key < data->returnedPacket->splitPacketId)
return -1;
if (key == data->returnedPacket->splitPacketId)
return 0;
#else
if (key < data->splitPacketList[0]->splitPacketId)
return -1;
if (key == data->splitPacketList[0]->splitPacketId)
return 0;
#endif
return 1;
}
// DEFINE_MULTILIST_PTR_TO_MEMBER_COMPARISONS( InternalPacket, SplitPacketIndexType, splitPacketIndex )
/*
bool operator<( const DataStructures::MLKeyRef<SplitPacketIndexType> &inputKey, const InternalPacket *cls )
{
return inputKey.Get() < cls->splitPacketIndex;
}
bool operator>( const DataStructures::MLKeyRef<SplitPacketIndexType> &inputKey, const InternalPacket *cls )
{
return inputKey.Get() > cls->splitPacketIndex;
}
bool operator==( const DataStructures::MLKeyRef<SplitPacketIndexType> &inputKey, const InternalPacket *cls )
{
return inputKey.Get() == cls->splitPacketIndex;
}
/// Semi-hack: This is necessary to call Sort()
bool operator<( const DataStructures::MLKeyRef<InternalPacket *> &inputKey, const InternalPacket *cls )
{
return inputKey.Get()->splitPacketIndex < cls->splitPacketIndex;
}
bool operator>( const DataStructures::MLKeyRef<InternalPacket *> &inputKey, const InternalPacket *cls )
{
return inputKey.Get()->splitPacketIndex > cls->splitPacketIndex;
}
bool operator==( const DataStructures::MLKeyRef<InternalPacket *> &inputKey, const InternalPacket *cls )
{
return inputKey.Get()->splitPacketIndex == cls->splitPacketIndex;
}
*/
int SplitPacketIndexComp( SplitPacketIndexType const &key, InternalPacket* const &data )
{
if (key < data->splitPacketIndex)
return -1;
if (key == data->splitPacketIndex)
return 0;
return 1;
}
//-------------------------------------------------------------------------------------------------------
// Constructor
//-------------------------------------------------------------------------------------------------------
// Add 21 to the default MTU so if we encrypt it can hold potentially 21 more bytes of extra data + padding.
ReliabilityLayer::ReliabilityLayer()
{
#ifdef _DEBUG
// Wait longer to disconnect in debug so I don't get disconnected while tracing
timeoutTime=30000;
#else
timeoutTime=10000;
#endif
#ifdef _DEBUG
minExtraPing=extraPingVariance=0;
packetloss=(double) minExtraPing;
#endif
#ifdef PRINT_TO_FILE_RELIABLE_ORDERED_TEST
if (fp==0 && 0)
{
fp = fopen("reliableorderedoutput.txt", "wt");
}
#endif
InitializeVariables();
//int i = sizeof(InternalPacket);
datagramHistoryMessagePool.SetPageSize(sizeof(MessageNumberNode)*128);
internalPacketPool.SetPageSize(sizeof(InternalPacket)*INTERNAL_PACKET_PAGE_SIZE);
refCountedDataPool.SetPageSize(sizeof(InternalPacketRefCountedData)*32);
}
//-------------------------------------------------------------------------------------------------------
// Destructor
//-------------------------------------------------------------------------------------------------------
ReliabilityLayer::~ReliabilityLayer()
{
FreeMemory( true ); // Free all memory immediately
}
//-------------------------------------------------------------------------------------------------------
// Resets the layer for reuse
//-------------------------------------------------------------------------------------------------------
void ReliabilityLayer::Reset( bool resetVariables, int MTUSize, bool _useSecurity )
{
FreeMemory( true ); // true because making a memory reset pending in the update cycle causes resets after reconnects. Instead, just call Reset from a single thread
if (resetVariables)
{
InitializeVariables();
#if LIBCAT_SECURITY==1
useSecurity = _useSecurity;
if (_useSecurity)
MTUSize -= cat::AuthenticatedEncryption::OVERHEAD_BYTES;
#else
(void) _useSecurity;
#endif // LIBCAT_SECURITY
congestionManager.Init(RakNet::GetTimeUS(), MTUSize - UDP_HEADER_SIZE);
}
}
//-------------------------------------------------------------------------------------------------------
// Set the time, in MS, to use before considering ourselves disconnected after not being able to deliver a reliable packet
//-------------------------------------------------------------------------------------------------------
void ReliabilityLayer::SetTimeoutTime( RakNet::TimeMS time )
{
timeoutTime=time;
}
//-------------------------------------------------------------------------------------------------------
// Returns the value passed to SetTimeoutTime. or the default if it was never called
//-------------------------------------------------------------------------------------------------------
RakNet::TimeMS ReliabilityLayer::GetTimeoutTime(void)
{
return timeoutTime;
}
//-------------------------------------------------------------------------------------------------------
// Initialize the variables
//-------------------------------------------------------------------------------------------------------
void ReliabilityLayer::InitializeVariables( void )
{
memset( orderedWriteIndex, 0, NUMBER_OF_ORDERED_STREAMS * sizeof(OrderingIndexType));
memset( sequencedWriteIndex, 0, NUMBER_OF_ORDERED_STREAMS * sizeof(OrderingIndexType) );
memset( orderedReadIndex, 0, NUMBER_OF_ORDERED_STREAMS * sizeof(OrderingIndexType) );
memset( highestSequencedReadIndex, 0, NUMBER_OF_ORDERED_STREAMS * sizeof(OrderingIndexType) );
memset( &statistics, 0, sizeof( statistics ) );
memset( &heapIndexOffsets, 0, sizeof( heapIndexOffsets ) );
statistics.connectionStartTime = RakNet::GetTimeUS();
splitPacketId = 0;
elapsedTimeSinceLastUpdate=0;
throughputCapCountdown=0;
sendReliableMessageNumberIndex = 0;
internalOrderIndex=0;
timeToNextUnreliableCull=0;
unreliableLinkedListHead=0;
lastUpdateTime= RakNet::GetTimeUS();
bandwidthExceededStatistic=false;
remoteSystemTime=0;
unreliableTimeout=0;
lastBpsClear=0;
// Disable packet pairs
countdownToNextPacketPair=15;
nextAllowedThroughputSample=0;
deadConnection = cheater = false;
timeOfLastContinualSend=0;
// timeResendQueueNonEmpty = 0;
timeLastDatagramArrived=RakNet::GetTimeMS();
// packetlossThisSample=false;
// backoffThisSample=0;
// packetlossThisSampleResendCount=0;
// lastPacketlossTime=0;
statistics.messagesInResendBuffer=0;
statistics.bytesInResendBuffer=0;
receivedPacketsBaseIndex=0;
resetReceivedPackets=true;
receivePacketCount=0;
// SetPing( 1000 );
timeBetweenPackets=STARTING_TIME_BETWEEN_PACKETS;
ackPingIndex=0;
ackPingSum=(CCTimeType)0;
nextSendTime=lastUpdateTime;
//nextLowestPingReset=(CCTimeType)0;
// continuousSend=false;
// histogramStart=(CCTimeType)0;
// histogramBitsSent=0;
unacknowledgedBytes=0;
resendLinkedListHead=0;
totalUserDataBytesAcked=0;
datagramHistoryPopCount=0;
InitHeapWeights();
for (int i=0; i < NUMBER_OF_PRIORITIES; i++)
{
statistics.messageInSendBuffer[i]=0;
statistics.bytesInSendBuffer[i]=0.0;
}
for (int i=0; i < RNS_PER_SECOND_METRICS_COUNT; i++)
{
bpsMetrics[i].Reset(_FILE_AND_LINE_);
}
}
//-------------------------------------------------------------------------------------------------------
// Frees all allocated memory
//-------------------------------------------------------------------------------------------------------
void ReliabilityLayer::FreeMemory( bool freeAllImmediately )
{
(void) freeAllImmediately;
FreeThreadSafeMemory();
}
void ReliabilityLayer::FreeThreadSafeMemory( void )
{
unsigned i,j;
InternalPacket *internalPacket;
ClearPacketsAndDatagrams();
for (i=0; i < splitPacketChannelList.Size(); i++)
{
for (j=0; j < splitPacketChannelList[i]->splitPacketList.Size(); j++)
{
FreeInternalPacketData(splitPacketChannelList[i]->splitPacketList[j], _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( splitPacketChannelList[i]->splitPacketList[j] );
}
#if PREALLOCATE_LARGE_MESSAGES==1
if (splitPacketChannelList[i]->returnedPacket)
{
FreeInternalPacketData(splitPacketChannelList[i]->returnedPacket, __FILE__, __LINE__ );
ReleaseToInternalPacketPool( splitPacketChannelList[i]->returnedPacket );
}
#endif
RakNet::OP_DELETE(splitPacketChannelList[i], __FILE__, __LINE__);
}
splitPacketChannelList.Clear(false, _FILE_AND_LINE_);
while ( outputQueue.Size() > 0 )
{
internalPacket = outputQueue.Pop();
FreeInternalPacketData(internalPacket, _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( internalPacket );
}
outputQueue.ClearAndForceAllocation( 32, _FILE_AND_LINE_ );
/*
for ( i = 0; i < orderingList.Size(); i++ )
{
if ( orderingList[ i ] )
{
DataStructures::LinkedList<InternalPacket*>* theList = orderingList[ i ];
if ( theList )
{
while ( theList->Size() )
{
internalPacket = orderingList[ i ]->Pop();
FreeInternalPacketData(internalPacket, _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( internalPacket );
}
RakNet::OP_DELETE(theList, _FILE_AND_LINE_);
}
}
}
orderingList.Clear(false, _FILE_AND_LINE_);
*/
for (i=0; i < NUMBER_OF_ORDERED_STREAMS; i++)
{
for (j=0; j < orderingHeaps[i].Size(); j++)
{
FreeInternalPacketData(orderingHeaps[i][j], _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( orderingHeaps[i][j] );
}
orderingHeaps[i].Clear(true, _FILE_AND_LINE_);
}
//resendList.ForEachData(DeleteInternalPacket);
// resendTree.Clear(_FILE_AND_LINE_);
memset(resendBuffer, 0, sizeof(resendBuffer));
statistics.messagesInResendBuffer=0;
statistics.bytesInResendBuffer=0;
if (resendLinkedListHead)
{
InternalPacket *prev;
InternalPacket *iter = resendLinkedListHead;
#ifdef _MSC_VER
#pragma warning( disable : 4127 ) // warning C4127: conditional expression is constant
#endif
while (1)
{
if (iter->data)
FreeInternalPacketData(iter, _FILE_AND_LINE_ );
prev=iter;
iter=iter->resendNext;
if (iter==resendLinkedListHead)
{
ReleaseToInternalPacketPool(prev);
break;
}
ReleaseToInternalPacketPool(prev);
}
resendLinkedListHead=0;
}
unacknowledgedBytes=0;
// acknowlegements.Clear(_FILE_AND_LINE_);
for ( j=0 ; j < outgoingPacketBuffer.Size(); j++ )
{
if ( outgoingPacketBuffer[ j ]->data)
FreeInternalPacketData( outgoingPacketBuffer[ j ], _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( outgoingPacketBuffer[ j ] );
}
outgoingPacketBuffer.Clear(true, _FILE_AND_LINE_);
#ifdef _DEBUG
for (unsigned i = 0; i < delayList.Size(); i++ )
RakNet::OP_DELETE(delayList[ i ], __FILE__, __LINE__);
delayList.Clear(__FILE__, __LINE__);
#endif
unreliableWithAckReceiptHistory.Clear(false, _FILE_AND_LINE_);
packetsToSendThisUpdate.Clear(false, _FILE_AND_LINE_);
packetsToSendThisUpdate.Preallocate(512, _FILE_AND_LINE_);
packetsToDeallocThisUpdate.Clear(false, _FILE_AND_LINE_);
packetsToDeallocThisUpdate.Preallocate(512, _FILE_AND_LINE_);
packetsToSendThisUpdateDatagramBoundaries.Clear(false, _FILE_AND_LINE_);
packetsToSendThisUpdateDatagramBoundaries.Preallocate(128, _FILE_AND_LINE_);
datagramSizesInBytes.Clear(false, _FILE_AND_LINE_);
datagramSizesInBytes.Preallocate(128, _FILE_AND_LINE_);
internalPacketPool.Clear(_FILE_AND_LINE_);
refCountedDataPool.Clear(_FILE_AND_LINE_);
/*
DataStructures::Page<DatagramSequenceNumberType, DatagramMessageIDList*, RESEND_TREE_ORDER> *cur = datagramMessageIDTree.GetListHead();
while (cur)
{
int treeIndex;
for (treeIndex=0; treeIndex < cur->size; treeIndex++)
ReleaseToDatagramMessageIDPool(cur->data[treeIndex]);
cur=cur->resendNext;
}
datagramMessageIDTree.Clear(_FILE_AND_LINE_);
datagramMessageIDPool.Clear(_FILE_AND_LINE_);
*/
while (datagramHistory.Size())
{
RemoveFromDatagramHistory(datagramHistoryPopCount);
datagramHistory.Pop();
datagramHistoryPopCount++;
}
datagramHistoryMessagePool.Clear(_FILE_AND_LINE_);
datagramHistoryPopCount=0;
acknowlegements.Clear();
NAKs.Clear();
unreliableLinkedListHead=0;
}
//-------------------------------------------------------------------------------------------------------
// Packets are read directly from the socket layer and skip the reliability
//layer because unconnected players do not use the reliability layer
// This function takes packet data after a player has been confirmed as
//connected. The game should not use that data directly
// because some data is used internally, such as packet acknowledgment and
//split packets
//-------------------------------------------------------------------------------------------------------
bool ReliabilityLayer::HandleSocketReceiveFromConnectedPlayer(
const char *buffer, unsigned int length, SystemAddress &systemAddress, DataStructures::List<PluginInterface2*> &messageHandlerList, int MTUSize,
RakNetSocket2 *s, RakNetRandom *rnr, CCTimeType timeRead,
BitStream &updateBitStream)
{
#ifdef _DEBUG
RakAssert( !( buffer == 0 ) );
#endif
#if CC_TIME_TYPE_BYTES==4
timeRead/=1000;
#endif
bpsMetrics[(int) ACTUAL_BYTES_RECEIVED].Push1(timeRead,length);
(void) MTUSize;
if ( length <= 2 || buffer == 0 ) // Length of 1 is a connection request resend that we just ignore
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("length <= 2 || buffer == 0", BYTES_TO_BITS(length), systemAddress, true);
return true;
}
timeLastDatagramArrived=RakNet::GetTimeMS();
// CCTimeType time;
// bool indexFound;
// int count, size;
DatagramSequenceNumberType holeCount;
unsigned i;
#if LIBCAT_SECURITY==1
if (useSecurity)
{
unsigned int received = length;
if (!auth_enc.Decrypt((cat::u8*)buffer, received))
return false;
length = received;
}
#endif
RakNet::BitStream socketData( (unsigned char*) buffer, length, false ); // Convert the incoming data to a bitstream for easy parsing
// time = RakNet::GetTimeUS();
// Set to the current time if it is not zero, and we get incoming data
// if (timeResendQueueNonEmpty!=0)
// timeResendQueueNonEmpty=timeRead;
DatagramHeaderFormat dhf;
dhf.Deserialize(&socketData);
if (dhf.isValid==false)
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("dhf.isValid==false", BYTES_TO_BITS(length), systemAddress, true);
return true;
}
if (dhf.isACK)
{
DatagramSequenceNumberType datagramNumber;
// datagramNumber=dhf.datagramNumber;
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
RakNet::TimeMS timeMSLow=(RakNet::TimeMS) timeRead&0xFFFFFFFF;
CCTimeType rtt = timeMSLow-dhf.sourceSystemTime;
#if CC_TIME_TYPE_BYTES==4
if (rtt > 10000)
#else
if (rtt > 10000000)
#endif
{
// Sanity check. This could happen due to type overflow, especially since I only send the low 4 bytes to reduce bandwidth
rtt=(CCTimeType) congestionManager.GetRTT();
}
// RakAssert(rtt < 500000);
// printf("%i ", (RakNet::TimeMS)(rtt/1000));
ackPing=rtt;
#endif
#ifdef _DEBUG
if (dhf.hasBAndAS==false)
{
// dhf.B=0;
dhf.AS=0;
}
#endif
// congestionManager.OnAck(timeRead, rtt, dhf.hasBAndAS, dhf.B, dhf.AS, totalUserDataBytesAcked );
incomingAcks.Clear();
if (incomingAcks.Deserialize(&socketData)==false)
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("incomingAcks.Deserialize failed", BYTES_TO_BITS(length), systemAddress, true);
return false;
}
for (i=0; i<incomingAcks.ranges.Size();i++)
{
if (incomingAcks.ranges[i].minIndex>incomingAcks.ranges[i].maxIndex || (incomingAcks.ranges[i].maxIndex == (uint24_t)(0xFFFFFFFF)))
{
RakAssert(incomingAcks.ranges[i].minIndex<=incomingAcks.ranges[i].maxIndex);
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("incomingAcks minIndex > maxIndex or maxIndex is max value", BYTES_TO_BITS(length), systemAddress, true);
return false;
}
for (datagramNumber=incomingAcks.ranges[i].minIndex; datagramNumber >= incomingAcks.ranges[i].minIndex && datagramNumber <= incomingAcks.ranges[i].maxIndex; datagramNumber++)
{
CCTimeType whenSent;
if (unreliableWithAckReceiptHistory.Size()>0)
{
unsigned int k=0;
while (k < unreliableWithAckReceiptHistory.Size())
{
if (unreliableWithAckReceiptHistory[k].datagramNumber == datagramNumber)
{
InternalPacket *ackReceipt = AllocateFromInternalPacketPool();
AllocInternalPacketData(ackReceipt, 5, false, _FILE_AND_LINE_ );
ackReceipt->dataBitLength=BYTES_TO_BITS(5);
ackReceipt->data[0]=(MessageID)ID_SND_RECEIPT_ACKED;
memcpy(ackReceipt->data+sizeof(MessageID), &unreliableWithAckReceiptHistory[k].sendReceiptSerial, sizeof(uint32_t));
outputQueue.Push(ackReceipt, _FILE_AND_LINE_ );
// Remove, swap with last
unreliableWithAckReceiptHistory.RemoveAtIndex(k);
}
else
k++;
}
}
MessageNumberNode *messageNumberNode = GetMessageNumberNodeByDatagramIndex(datagramNumber, &whenSent);
if (messageNumberNode)
{
// printf("%p Got ack for %i\n", this, datagramNumber.val);
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
congestionManager.OnAck(timeRead, rtt, dhf.hasBAndAS, 0, dhf.AS, totalUserDataBytesAcked, bandwidthExceededStatistic, datagramNumber );
#else
CCTimeType ping;
if (timeRead>whenSent)
ping=timeRead-whenSent;
else
ping=0;
congestionManager.OnAck(timeRead, ping, dhf.hasBAndAS, 0, dhf.AS, totalUserDataBytesAcked, bandwidthExceededStatistic, datagramNumber );
#endif
while (messageNumberNode)
{
// TESTING1
// printf("Remove %i on ack for datagramNumber=%i.\n", messageNumberNode->messageNumber.val, datagramNumber.val);
RemovePacketFromResendListAndDeleteOlderReliableSequenced( messageNumberNode->messageNumber, timeRead, messageHandlerList, systemAddress );
messageNumberNode=messageNumberNode->next;
}
RemoveFromDatagramHistory(datagramNumber);
}
// else if (isReliable)
// {
// // Previously used slot, rather than empty unreliable slot
// printf("%p Ack %i is duplicate\n", this, datagramNumber.val);
//
// congestionManager.OnDuplicateAck(timeRead, datagramNumber);
// }
}
}
}
else if (dhf.isNAK)
{
DatagramSequenceNumberType messageNumber;
DataStructures::RangeList<DatagramSequenceNumberType> incomingNAKs;
if (incomingNAKs.Deserialize(&socketData)==false)
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("incomingNAKs.Deserialize failed", BYTES_TO_BITS(length), systemAddress, true);
return false;
}
for (i=0; i<incomingNAKs.ranges.Size();i++)
{
if (incomingNAKs.ranges[i].minIndex>incomingNAKs.ranges[i].maxIndex)
{
RakAssert(incomingNAKs.ranges[i].minIndex<=incomingNAKs.ranges[i].maxIndex);
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("incomingNAKs minIndex>maxIndex", BYTES_TO_BITS(length), systemAddress, true);
return false;
}
// Sanity check
//RakAssert(incomingNAKs.ranges[i].maxIndex.val-incomingNAKs.ranges[i].minIndex.val<1000);
for (messageNumber=incomingNAKs.ranges[i].minIndex; messageNumber >= incomingNAKs.ranges[i].minIndex && messageNumber <= incomingNAKs.ranges[i].maxIndex; messageNumber++)
{
congestionManager.OnNAK(timeRead, messageNumber);
// REMOVEME
// printf("%p NAK %i\n", this, dhf.datagramNumber.val);
CCTimeType timeSent;
MessageNumberNode *messageNumberNode = GetMessageNumberNodeByDatagramIndex(messageNumber, &timeSent);
while (messageNumberNode)
{
// Update timers so resends occur immediately
InternalPacket *internalPacket = resendBuffer[messageNumberNode->messageNumber & (uint32_t) RESEND_BUFFER_ARRAY_MASK];
if (internalPacket)
{
if (internalPacket->nextActionTime!=0)
{
internalPacket->nextActionTime=timeRead;
}
}
messageNumberNode=messageNumberNode->next;
}
}
}
}
else
{
uint32_t skippedMessageCount;
if (!congestionManager.OnGotPacket(dhf.datagramNumber, dhf.isContinuousSend, timeRead, length, &skippedMessageCount))
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("congestionManager.OnGotPacket failed", BYTES_TO_BITS(length), systemAddress, true);
return true;
}
if (dhf.isPacketPair)
congestionManager.OnGotPacketPair(dhf.datagramNumber, length, timeRead);
DatagramHeaderFormat dhfNAK;
dhfNAK.isNAK=true;
uint32_t skippedMessageOffset;
for (skippedMessageOffset=skippedMessageCount; skippedMessageOffset > 0; skippedMessageOffset--)
{
NAKs.Insert(dhf.datagramNumber-skippedMessageOffset);
}
remoteSystemNeedsBAndAS=dhf.needsBAndAs;
// Ack dhf.datagramNumber
// Ack even unreliable messages for congestion control, just don't resend them on no ack
#if INCLUDE_TIMESTAMP_WITH_DATAGRAMS==1
SendAcknowledgementPacket( dhf.datagramNumber, dhf.sourceSystemTime);
#else
SendAcknowledgementPacket( dhf.datagramNumber, 0);
#endif
InternalPacket* internalPacket = CreateInternalPacketFromBitStream( &socketData, timeRead );
if (internalPacket==0)
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("CreateInternalPacketFromBitStream failed", BYTES_TO_BITS(length), systemAddress, true);
return true;
}
while ( internalPacket )
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
{
#if CC_TIME_TYPE_BYTES==4
messageHandlerList[messageHandlerIndex]->OnInternalPacket(internalPacket, receivePacketCount, systemAddress, timeRead, false);
#else
messageHandlerList[messageHandlerIndex]->OnInternalPacket(internalPacket, receivePacketCount, systemAddress, (RakNet::TimeMS)(timeRead/(CCTimeType)1000), false);
#endif
}
{
// resetReceivedPackets is set from a non-threadsafe function.
// We do the actual reset in this function so the data is not modified by multiple threads
if (resetReceivedPackets)
{
hasReceivedPacketQueue.ClearAndForceAllocation(DEFAULT_HAS_RECEIVED_PACKET_QUEUE_SIZE, _FILE_AND_LINE_);
receivedPacketsBaseIndex=0;
resetReceivedPackets=false;
}
// Check for corrupt orderingChannel
if (
internalPacket->reliability == RELIABLE_SEQUENCED ||
internalPacket->reliability == UNRELIABLE_SEQUENCED ||
internalPacket->reliability == RELIABLE_ORDERED
)
{
if ( internalPacket->orderingChannel >= NUMBER_OF_ORDERED_STREAMS )
{
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("internalPacket->orderingChannel >= NUMBER_OF_ORDERED_STREAMS", BYTES_TO_BITS(length), systemAddress, true);
bpsMetrics[(int) USER_MESSAGE_BYTES_RECEIVED_IGNORED].Push1(timeRead,BITS_TO_BYTES(internalPacket->dataBitLength));
FreeInternalPacketData(internalPacket, _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( internalPacket );
goto CONTINUE_SOCKET_DATA_PARSE_LOOP;
}
}
// 8/12/09 was previously not checking if the message was reliable. However, on packetloss this would mean you'd eventually exceed the
// hole count because unreliable messages were never resent, and you'd stop getting messages
if (internalPacket->reliability == RELIABLE || internalPacket->reliability == RELIABLE_SEQUENCED || internalPacket->reliability == RELIABLE_ORDERED )
{
// If the following conditional is true then this either a duplicate packet
// or an older out of order packet
// The subtraction unsigned overflow is intentional
holeCount = (DatagramSequenceNumberType)(internalPacket->reliableMessageNumber-receivedPacketsBaseIndex);
const DatagramSequenceNumberType typeRange = (DatagramSequenceNumberType)(const uint32_t)-1;
// TESTING1
// printf("waiting on reliableMessageNumber=%i holeCount=%i datagramNumber=%i\n", receivedPacketsBaseIndex.val, holeCount.val, dhf.datagramNumber.val);
if (holeCount==(DatagramSequenceNumberType) 0)
{
// Got what we were expecting
if (hasReceivedPacketQueue.Size())
hasReceivedPacketQueue.Pop();
++receivedPacketsBaseIndex;
}
else if (holeCount > typeRange/(DatagramSequenceNumberType) 2)
{
bpsMetrics[(int) USER_MESSAGE_BYTES_RECEIVED_IGNORED].Push1(timeRead,BITS_TO_BYTES(internalPacket->dataBitLength));
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("holeCount > typeRange/(DatagramSequenceNumberType) 2", BYTES_TO_BITS(length), systemAddress, false);
// Duplicate packet
FreeInternalPacketData(internalPacket, _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( internalPacket );
goto CONTINUE_SOCKET_DATA_PARSE_LOOP;
}
else if ((unsigned int) holeCount<hasReceivedPacketQueue.Size())
{
// Got a higher count out of order packet that was missing in the sequence or we already got
if (hasReceivedPacketQueue[holeCount]!=false) // non-zero means this is a hole
{
#ifdef LOG_TRIVIAL_NOTIFICATIONS
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("Higher count pushed to hasReceivedPacketQueue", BYTES_TO_BITS(length), systemAddress, false);
#endif
// Fill in the hole
hasReceivedPacketQueue[holeCount]=false; // We got the packet at holeCount
}
else
{
bpsMetrics[(int) USER_MESSAGE_BYTES_RECEIVED_IGNORED].Push1(timeRead,BITS_TO_BYTES(internalPacket->dataBitLength));
#ifdef LOG_TRIVIAL_NOTIFICATIONS
for (unsigned int messageHandlerIndex=0; messageHandlerIndex < messageHandlerList.Size(); messageHandlerIndex++)
messageHandlerList[messageHandlerIndex]->OnReliabilityLayerNotification("Duplicate packet ignored", BYTES_TO_BITS(length), systemAddress, false);
#endif
// Duplicate packet
FreeInternalPacketData(internalPacket, _FILE_AND_LINE_ );
ReleaseToInternalPacketPool( internalPacket );
goto CONTINUE_SOCKET_DATA_PARSE_LOOP;
}
}