public void HandleLatestMessageID(NetIncomingMessage inc)
{
ushort messageId = inc.ReadUInt16();
recipient = inc.SenderConnection;
//id matches, all good
if (messageId == lastMessageID)
{
//Debug.WriteLine("Received ack message: " + messageId + ", all good");
return;
}
if (ReliableChannel.IdDiff(lastMessageID, messageId) > NetConfig.ReliableMessageBufferSize)
{
Debug.WriteLine("id diff > NetConfig.ReliableMessageBufferSize, resetting reliable channel");
lastMessageID = messageId;
return;
}
if (messageId < lastMessageID && Math.Abs((int)lastMessageID - (int)messageId) < ushort.MaxValue / 2)
{
Debug.WriteLine("Received id update message: " + messageId + ": ignoring, already received (" + lastMessageID + ")");
return;
}
Debug.WriteLine("Received id update message: " + messageId + ", need to rerequest messages (last id: " + lastMessageID + ")");
if (lastMessageID > ushort.MaxValue / 2 && messageId < short.MaxValue / 2)
{
for (ushort i = (ushort)Math.Min((int)lastMessageID + 1, ushort.MaxValue); i <= ushort.MaxValue; i++)
{
if (i == ushort.MaxValue && lastMessageID == ushort.MaxValue)
{
break;
}
QueueMissingMessage(i);
if (i == ushort.MaxValue)
{
break;
}
}
for (ushort i = 1; i <= messageId; i++)
{
QueueMissingMessage(i);
}
}
else
{
//we already wrapped around but message hasn't, so it's an old message
if (lastMessageID < ushort.MaxValue / 2 && messageId > ushort.MaxValue / 2)
{
Debug.WriteLine("old already received message, ignore");
return;
}
for (ushort i = (ushort)Math.Min((int)lastMessageID + 1, ushort.MaxValue); i <= messageId; i++)
{
QueueMissingMessage(i);
if (i == ushort.MaxValue)
{
break;
}
}
}
lastMessageID = messageId;
}
public bool CheckMessage(NetIncomingMessage message)
{
recipient = message.SenderConnection;
ushort id = message.ReadUInt16();
if (ReliableChannel.IdDiff(lastMessageID, id) > NetConfig.ReliableMessageBufferSize)
{
Debug.WriteLine("id diff > NetConfig.ReliableMessageBufferSize, resetting reliable channel");
lastMessageID = id;
return(false);
}
Debug.WriteLine("received message ID " + id + " - last id: " + lastMessageID);
//wrapped around
if (Math.Abs((int)lastMessageID - (int)id) > ushort.MaxValue / 2)
{
//id wrapped around and we missed some messages in between, rerequest them
if (lastMessageID > ushort.MaxValue / 2 && id >= 1)
{
for (ushort i = (ushort)(Math.Min(lastMessageID, (ushort)(ushort.MaxValue - 1)) + 1); i < ushort.MaxValue; i++)
{
QueueMissingMessage(i);
}
for (ushort i = 1; i < id; i++)
{
QueueMissingMessage(i);
}
lastMessageID = id;
}
//we already wrapped around but the message hasn't, check if it's a duplicate
else if (lastMessageID < ushort.MaxValue / 2 && id > ushort.MaxValue / 2 && !missingMessages.ContainsKey(id))
{
Debug.WriteLine("old already received message, ignore");
return(false);
}
else
{
RemoveMissingMessage(id);
}
}
else
{
if (id > lastMessageID + 1)
{
for (ushort i = (ushort)(lastMessageID + 1); i < id; i++)
{
QueueMissingMessage(i);
}
}
//received an old message and it wasn't marked as missed, lets ignore it
else if (id <= lastMessageID && !missingMessages.ContainsKey(id))
{
Debug.WriteLine("old already received message, ignore");
return(false);
}
else
{
RemoveMissingMessage(id);
}
lastMessageID = Math.Max(lastMessageID, id);
}
return(true);
}
