SendImmediate( (char*)bitStream.GetData(), bitStream.GetNumberOfBitsUsed(), SYSTEM_PRIORITY, UNRELIABLE, 0, target, false, false, currentTimeNS )

char* data                      = bitStream.GetData()
int numberOfBitsToSend          = bitStream.GetNumberOfBitsUsed()
PacketPriority priority         = SYSTEM_PRIORITY
PacketReliability reliability   = UNRELIABLE
char orderingChannel            = 0
PlayerID playerId               = target
bool broadcast                  = false
bool useCallerDataAllocation    = false
RakNetTimeNS currentTime        = currentTimeNS



Send( char *data, int numberOfBitsToSend, PacketPriority priority, PacketReliability reliability, unsigned char orderingChannel, bool makeDataCopy, int MTUSize, RakNetTimeNS currentTime )

char* data                      = bitStream.GetData()
int numberOfBitsToSend          = bitStream.GetNumberOfBitsUsed()
PacketPriority priority         = SYSTEM_PRIORITY
PacketReliability reliability   = UNRELIABLE
char orderingChannel            = 0
bool makeDataCopy               = true
int MTUSize                     = 576
RakNetTimeNS currentTime        = currentTimeNS



internalPacket->creationTime        = currentTime
internalPacket->data                = data          // (cpy)
internalPacket->dataBitLength       = numberOfBitsToSend
internalPacket->nextActionTime      = 0
internalPacket->messageNumber       = messageNumber
internalPacket->priority            = priority
internalPacket->reliability         = reliability
internalPacket->splitPacketCount    = 0



int headerLength    = BITS_TO_BYTES( GetBitStreamHeaderLength(internalPacket) )
int maxDataSize     = 576 - 28 - headerLength       // MTUSize - UDP_HEADER_SIZE - headerLength

; More stuff to note from

...
sendPacketSet[ internalPacket->priority ].Push( internalPacket );