private async void RetransmissionLoop()
{
while (_listeningRunning)
{
Retransmission retransmission = null;
lock (_retransmissions)
{
if (_retransmissions.Count > 0)
{
retransmission = _retransmissions[0];
}
}
if (retransmission != null)
{
LogManager.RuntimeLogger.Log($"[UdpNetworkClient] Retrying token {retransmission.ConfirmationToken}. {retransmission.RetriesRemaining} reties remaining");
_udpClient.Send(retransmission.DataBuffer, retransmission.DataBuffer.Length,
retransmission.EndPoint);
retransmission.RetriesRemaining--;
if (retransmission.RetriesRemaining == 0)
{
LogManager.RuntimeLogger.Log($"[UdpNetworkClient] Retransmission failed. Too many retries");
// TODO Report connection lost?
lock (_retransmissions)
{
_retransmissions.RemoveAt(0);
}
}
}
await Task.Delay(RetransmissionPeriodMs);
}
}
private void SendData(IPEndPoint endPoint, UdpCommand command, byte[] data, Reliability reliability)
{
int pos = 0;
ulong token = reliability == Reliability.Reliable ? GenerateConfirmationToken() : 0;
UdpPackage udpPackage = new UdpPackage(command, reliability, token, data);
byte[] datagram = new byte[udpPackage.Length];
udpPackage.ToByteArray(datagram, pos);
pos += udpPackage.Length;
if (reliability == Reliability.Reliable)
{
Retransmission retransmission = new Retransmission(endPoint, datagram, token, RetransmissionCount);
lock (_retransmissionQueue)
{
_retransmissionQueue.Add(retransmission);
}
}
_udpClient.Send(datagram, datagram.Length, endPoint);
}
public void Send(byte[] data, Reliability reliability = Reliability.Unreliable)
{
ulong token = reliability == Reliability.Reliable ? GenerateConfirmationToken() : 0;
//Debug.WriteLine($"Confirmation token generated: {token}. Reliability: {reliability}");
UdpPackage package = new UdpPackage(UdpCommand.Data, reliability, token, data);
byte[] datagram = new byte[package.Length];
package.ToByteArray(datagram, 0);
Retransmission retransmission = new Retransmission(_serverEndPoint, datagram, token, RetriesCount);
if (reliability == Reliability.Reliable)
{
lock (_retransmissions)
{
_retransmissions.Add(retransmission);
}
}
_udpClient.Send(datagram, datagram.Length, _serverEndPoint);
}
private void RetransmitAll()
{
lock (_retransmissionQueue)
{
for (int i = 0; i < _retransmissionQueue.Count; i++)
{
Retransmission retransmission = _retransmissionQueue[i];
if (retransmission.RetriesRemaining == 0 || retransmission.MarkedAsCanceled || retransmission.MarkedAsSuccessful)
{
if (!retransmission.MarkedAsSuccessful)
{
LogManager.RuntimeLogger.Log(
$"[UdpNetworkServer] Retransmission failed. Too many retries");
foreach (var entry in _retransmissionQueue)
{
if (entry.EndPoint.Equals(retransmission.EndPoint))
{
entry.MarkedAsCanceled =
true; // Discard all retransmissions associated with this EndPoint.
}
}
// TODO Mark player as disconnected?
}
_retransmissionQueue.RemoveAt(i);
i--;
}
else
{
//LogManager.RuntimeLogger.Log($"[UdpNetworkServer] Retrying token {retransmission.ConfirmationToken}");
_udpClient.Send(retransmission.DataBuffer, retransmission.DataBuffer.Length,
retransmission.EndPoint);
retransmission.RetriesRemaining--;
}
}
}
}
