public override void SendPacket(ReliableUdpConnectionRecord connectionRecord)
{
//Debug.WriteLine( "#{0} block sending...", connectionRecord.SndNext );
//RU: отправляем блок пакетов
//EN: sending block of packets
for (connectionRecord.PacketCounter = 0;
connectionRecord.PacketCounter < connectionRecord.WindowSize &&
connectionRecord.SndNext < connectionRecord.NumberOfPackets;
connectionRecord.PacketCounter++)
{
ReliableUdpHeader header = ReliableUdpStateTools.CreateReliableUdpHeader(connectionRecord);
ReliableUdpStateTools.SendPacket(connectionRecord,
ReliableUdpStateTools.CreateUdpPayload(connectionRecord, header));
connectionRecord.SndNext++;
}
//RU: на случай большого окна передачи, перезапускаем таймер после отправки
connectionRecord.WaitForPacketsTimer.Change(connectionRecord.ShortTimerPeriod, -1);
if (connectionRecord.CloseWaitTimer != null)
{
connectionRecord.CloseWaitTimer.Change(-1, -1);
}
}
public override void SendPacket(ReliableUdpConnectionRecord connectionRecord)
{
try
{
System.Threading.Monitor.Enter(connectionRecord.LockerReceive);
connectionRecord.PacketCounter = 0;
connectionRecord.SndNext = 0;
connectionRecord.WindowLowerBound = 0;
#region Sending a message that does not require confirmation of delivery (Flags = NoAsk)
//RU: если подтверждения не требуется - отправляем все пакеты
//RU: и высвобождаем ресурсы
//EN: if confirmation of delivery doesn't requires than
//EN: send all packets and release the resources
if (connectionRecord.IsNoAnswerNeeded)
{
//RU: Здесь происходит отправка As Is
//RU: при такой отправке возможен вариант
//RU: кроме того при большой нагрузке возможна потеря первого пакета (не попадание в буфер приема)
//RU: соответственно в таком случае все отправленные с данной TransmissionId
//RU: пакеты буду отброшены
//EN: Here is "As Is" sending
//EN: If in some cases first packet won't arrive on endpoint than all packets of the
//EN: current TransmissionId will be droped
do
{
connectionRecord.CToken.ThrowIfCancellationRequested();
ReliableUdpStateTools.SendPacket(connectionRecord,
ReliableUdpStateTools.CreateUdpPayload(connectionRecord,
ReliableUdpStateTools.
CreateReliableUdpHeader(
connectionRecord)
));
connectionRecord.SndNext++;
} while (connectionRecord.SndNext < connectionRecord.NumberOfPackets);
SetAsCompleted(connectionRecord);
return;
}
#endregion
connectionRecord.CToken.ThrowIfCancellationRequested();
ReliableUdpHeader header = ReliableUdpStateTools.CreateReliableUdpHeader(connectionRecord);
ReliableUdpStateTools.SendPacket(connectionRecord,
ReliableUdpStateTools.CreateUdpPayload(connectionRecord, header));
//RU: увеличиваем счетчик
//EN: increase SndNext
connectionRecord.SndNext++;
//RU: сдвигаем окно
//EN: move window lower bound
connectionRecord.WindowLowerBound++;
connectionRecord.State = connectionRecord.Tcb.States.SendingCycle;
//RU: Запускаем таймер
//EN: Start the timer
connectionRecord.WaitForPacketsTimer = new Timer(CheckByTimer, connectionRecord,
connectionRecord.ShortTimerPeriod, -1);
}
catch (ArgumentNullException ex)
{
SetAsError(connectionRecord, ex);
}
catch (ArgumentOutOfRangeException ex)
{
SetAsError(connectionRecord, ex);
}
catch (ArgumentException ex)
{
SetAsError(connectionRecord, ex);
}
catch (ObjectDisposedException ex)
{
SetAsError(connectionRecord, ex);
}
catch (InvalidOperationException ex)
{
SetAsError(connectionRecord, ex);
}
catch (System.Net.Sockets.SocketException ex)
{
SetAsError(connectionRecord, ex);
}
catch (OperationCanceledException ex)
{
SetAsError(connectionRecord, ex);
}
finally
{
System.Threading.Monitor.Exit(connectionRecord.LockerReceive);
}
}