| static private RelativeSequenceNumber ( int nr, int expected ) : int | ||
| nr | int | |
| expected | int | |
| return | int | |
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
internal override void ReceiveAcknowledge(double now, int seqNr)
{
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, m_windowStart);
if (relate < 0)
{
//m_connection.m_peer.LogDebug("Received late/dupe ack for #" + seqNr);
return; // late/duplicate ack
}
if (relate == 0)
{
//m_connection.m_peer.LogDebug("Received right-on-time ack for #" + seqNr);
// ack arrived right on time
NetException.Assert(seqNr == m_windowStart);
m_receivedAcks[m_windowStart] = false;
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
return;
}
// Advance window to this position
m_receivedAcks[seqNr] = true;
while (m_windowStart != seqNr)
{
m_receivedAcks[m_windowStart] = false;
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
}
}
internal override void ReceiveMessage(NetIncomingMessage message)
{
int relate = NetUtility.RelativeSequenceNumber(message.m_sequenceNumber, m_windowStart);
// ack no matter what
m_connection.QueueAck(message.m_receivedMessageType, message.m_sequenceNumber);
if (relate == 0)
{
// Log("Received message #" + message.SequenceNumber + " right on time");
//
// excellent, right on time
//
//m_peer.LogVerbose("Received RIGHT-ON-TIME " + message);
AdvanceWindow();
m_peer.ReleaseMessage(message);
// release withheld messages
int nextSeqNr = (message.m_sequenceNumber + 1) % NetConstants.NumSequenceNumbers;
while (m_earlyReceived[nextSeqNr % m_windowSize])
{
message = m_withheldMessages[nextSeqNr % m_windowSize];
NetException.Assert(message != null);
// remove it from withheld messages
m_withheldMessages[nextSeqNr % m_windowSize] = null;
m_peer.LogVerbose("Releasing withheld message #" + message);
m_peer.ReleaseMessage(message);
AdvanceWindow();
nextSeqNr++;
}
return;
}
if (relate < 0)
{
m_peer.LogVerbose("Received message #" + message.m_sequenceNumber + " DROPPING DUPLICATE");
// duplicate
return;
}
// relate > 0 = early message
if (relate > m_windowSize)
{
// too early message!
m_peer.LogDebug("Received " + message + " TOO EARLY! Expected " + m_windowStart);
return;
}
m_earlyReceived.Set(message.m_sequenceNumber % m_windowSize, true);
m_peer.LogVerbose("Received " + message + " WITHHOLDING, waiting for " + m_windowStart);
m_withheldMessages[message.m_sequenceNumber % m_windowSize] = message;
}
internal override void ReceiveMessage(NetIncomingMessage message)
{
int nr = message.m_sequenceNumber;
int relate = NetUtility.RelativeSequenceNumber(nr, m_windowStart);
// ack no matter what
m_connection.QueueAck(message.m_receivedMessageType, nr);
if (relate == 0)
{
AdvanceWindow();
m_peer.ReleaseMessage(message);
return;
}
if (relate < 0)
{
m_peer.LogVerbose("Received message #" + message.m_sequenceNumber + " DROPPING LATE or DUPE");
return;
}
// relate > 0 = early message
if (relate > m_windowSize)
{
// too early message!
m_peer.LogDebug("Received " + message + " TOO EARLY! Expected " + m_windowStart);
return;
}
// ok
m_windowStart = (m_windowStart + relate) % NetConstants.NumSequenceNumbers;
m_peer.ReleaseMessage(message);
return;
}
internal override void ReceiveMessage(NetIncomingMessage msg)
{
int nr = msg.m_sequenceNumber;
// ack no matter what
m_connection.QueueAck(msg.m_receivedMessageType, nr);
int relate = NetUtility.RelativeSequenceNumber(nr, m_lastReceivedSequenceNumber);
if (relate < 0)
{
return; // drop if late
}
m_lastReceivedSequenceNumber = nr;
m_peer.ReleaseMessage(msg);
}
internal override void ReceiveMessage(NetIncomingMessage message)
{
int relate = NetUtility.RelativeSequenceNumber(message.m_sequenceNumber, m_windowStart);
// ack no matter what
m_connection.QueueAck(message.m_receivedMessageType, message.m_sequenceNumber);
if (relate == 0)
{
AdvanceWindow();
m_peer.ReleaseMessage(message);
// release withheld messages
int nextSeqNr = (message.m_sequenceNumber + 1) % NetConstants.NumSequenceNumbers;
while (m_earlyReceived[nextSeqNr % m_windowSize])
{
AdvanceWindow();
nextSeqNr++;
}
return;
}
if (relate < 0)
{
// duplicate
m_peer.LogVerbose("Received message #" + message.m_sequenceNumber + " DROPPING DUPLICATE");
return;
}
// relate > 0 = early message
if (relate > m_windowSize)
{
// too early message!
m_peer.LogDebug("Received " + message + " TOO EARLY! Expected " + m_windowStart);
return;
}
m_earlyReceived.Set(message.m_sequenceNumber % m_windowSize, true);
m_peer.ReleaseMessage(message);
}
internal override void ReceiveMessage(NetIncomingMessage msg)
{
int nr = msg.m_sequenceNumber;
// ack no matter what
m_connection.QueueAck(msg.m_receivedMessageType, nr);
int relate = NetUtility.RelativeSequenceNumber(nr, m_lastReceivedSequenceNumber + 1);
if (relate < 0)
{
m_connection.m_statistics.MessageDropped();
m_peer.LogVerbose("Received message #" + nr + " DROPPING DUPLICATE");
return; // drop if late
}
m_lastReceivedSequenceNumber = nr;
m_peer.ReleaseMessage(msg);
}
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
public override NetSocketResult ReceiveAcknowledge(TimeSpan now, int seqNr)
{
if (!_doFlowControl)
{
// we have no use for acks on this channel since we don't respect the window anyway
_connection.Peer.LogWarning(new NetLogMessage(NetLogCode.SuppressedUnreliableAck, endPoint: _connection));
return(new NetSocketResult(true, false));
}
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, _windowStart);
if (relate < 0)
{
//m_connection.m_peer.LogDebug("Received late/dupe ack for #" + seqNr);
return(new NetSocketResult(true, false)); // late/duplicate ack
}
if (relate == 0)
{
//m_connection.m_peer.LogDebug("Received right-on-time ack for #" + seqNr);
// ack arrived right on time
LidgrenException.Assert(seqNr == _windowStart);
_receivedAcks[_windowStart] = false;
_windowStart = NetUtility.PowOf2Mod(_windowStart + 1, NetConstants.SequenceNumbers);
return(new NetSocketResult(true, false));
}
// Advance window to this position
_receivedAcks[seqNr] = true;
while (_windowStart != seqNr)
{
_receivedAcks[_windowStart] = false;
_windowStart = NetUtility.PowOf2Mod(_windowStart + 1, NetConstants.SequenceNumbers);
}
return(new NetSocketResult(true, false));
}
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
internal override void ReceiveAcknowledge(double now, int seqNr)
{
if (m_doFlowControl == false)
{
// we have no use for acks on this channel since we don't respect the window anyway
m_connection.m_peer.LogVerbose("SuppressUnreliableUnorderedAcks sender/receiver mismatch!");
return;
}
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, m_windowStart);
if (relate < 0)
{
//m_connection.m_peer.LogDebug("Received late/dupe ack for #" + seqNr);
return; // late/duplicate ack
}
if (relate == 0)
{
//m_connection.m_peer.LogDebug("Received right-on-time ack for #" + seqNr);
// ack arrived right on time
NetException.Assert(seqNr == m_windowStart);
m_receivedAcks[m_windowStart] = false;
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
return;
}
// Advance window to this position
m_receivedAcks[seqNr] = true;
while (m_windowStart != seqNr)
{
m_receivedAcks[m_windowStart] = false;
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
}
}
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
internal override void ReceiveAcknowledge(float now, int seqNr)
{
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, m_windowStart);
if (relate < 0)
{
//m_connection.m_peer.LogDebug("Received late/dupe ack for #" + seqNr);
return; // late/duplicate ack
}
if (relate == 0)
{
//m_connection.m_peer.LogDebug("Received right-on-time ack for #" + seqNr);
// ack arrived right on time
NetException.Assert(seqNr == m_windowStart);
m_receivedAcks[m_windowStart] = false;
DestoreMessage(m_windowStart % m_windowSize);
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
// advance window if we already have early acks
while (m_receivedAcks.Get(m_windowStart))
{
//m_connection.m_peer.LogDebug("Using early ack for #" + m_windowStart + "...");
m_receivedAcks[m_windowStart] = false;
DestoreMessage(m_windowStart % m_windowSize);
NetException.Assert(m_storedMessages[m_windowStart % m_windowSize].Message == null); // should already be destored
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
//m_connection.m_peer.LogDebug("Advancing window to #" + m_windowStart);
}
return;
}
//
// early ack... (if it has been sent!)
//
// If it has been sent either the m_windowStart message was lost
// ... or the ack for that message was lost
//
//m_connection.m_peer.LogDebug("Received early ack for #" + seqNr);
int sendRelate = NetUtility.RelativeSequenceNumber(seqNr, m_sendStart);
if (sendRelate <= 0)
{
// yes, we've sent this message - it's an early (but valid) ack
if (m_receivedAcks[seqNr])
{
// we've already destored/been acked for this message
}
else
{
m_receivedAcks[seqNr] = true;
}
}
else if (sendRelate > 0)
{
// This is a bug in Lidgren (that I don't have time to mess around with) (-AR)
// Disconnecting causes the channel to Reset() (resets pending sequence number), but somehow we still receive acks.
// (Status gets set to Disconnected after the Reset, but seems to all be on the network thread, so not a race condition)
if (m_connection == null || m_connection.m_status == NetConnectionStatus.Disconnected)
{
return; // Let's not call NetException.Assert!
}
// uh... we haven't sent this message yet? Weird, dupe or error...
NetException.Assert(false, "Got ack for message not yet sent?");
return;
}
// Ok, lets resend all missing acks
int rnr = seqNr;
do
{
rnr--;
if (rnr < 0)
{
rnr = NetConstants.NumSequenceNumbers - 1;
}
if (m_receivedAcks[rnr])
{
// m_connection.m_peer.LogDebug("Not resending #" + rnr + " (since we got ack)");
}
else
{
int slot = rnr % m_windowSize;
NetException.Assert(m_storedMessages[slot].Message != null);
if (m_storedMessages[slot].NumSent == 1)
{
// just sent once; resend immediately since we found gap in ack sequence
NetOutgoingMessage rmsg = m_storedMessages[slot].Message;
//m_connection.m_peer.LogVerbose("Resending #" + rnr + " (" + rmsg + ")");
if (now - m_storedMessages[slot].LastSent < (m_resendDelay * 0.35f))
{
// already resent recently
}
else
{
m_storedMessages[slot].LastSent = now;
m_storedMessages[slot].NumSent++;
m_connection.m_statistics.MessageResent(MessageResendReason.HoleInSequence);
m_connection.QueueSendMessage(rmsg, rnr);
}
}
}
} while (rnr != m_windowStart);
}
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
internal override void ReceiveAcknowledge(double now, int seqNr)
{
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, m_windowStart);
if (relate < 0)
{
//m_connection.m_peer.LogDebug("Received late/dupe ack for #" + seqNr);
return; // late/duplicate ack
}
if (relate == 0)
{
//m_connection.m_peer.LogDebug("Received right-on-time ack for #" + seqNr);
// ack arrived right on time
NetException.Assert(seqNr == m_windowStart);
bool resetTimeout;
m_receivedAcks[m_windowStart] = false;
DestoreMessage(now, m_windowStart % m_windowSize, out resetTimeout);
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
// advance window if we already have early acks
while (m_receivedAcks.Get(m_windowStart))
{
//m_connection.m_peer.LogDebug("Using early ack for #" + m_windowStart + "...");
m_receivedAcks[m_windowStart] = false;
bool rt;
DestoreMessage(now, m_windowStart % m_windowSize, out rt);
resetTimeout |= rt;
NetException.Assert(m_storedMessages[m_windowStart % m_windowSize].Message == null); // should already be destored
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
//m_connection.m_peer.LogDebug("Advancing window to #" + m_windowStart);
}
if (resetTimeout)
{
m_connection.ResetTimeout(now);
}
return;
}
//
// early ack... (if it has been sent!)
//
// If it has been sent either the m_windowStart message was lost
// ... or the ack for that message was lost
//
//m_connection.m_peer.LogDebug("Received early ack for #" + seqNr);
int sendRelate = NetUtility.RelativeSequenceNumber(seqNr, m_sendStart);
if (sendRelate <= 0)
{
// yes, we've sent this message - it's an early (but valid) ack
if (m_receivedAcks[seqNr])
{
// we've already destored/been acked for this message
}
else
{
m_receivedAcks[seqNr] = true;
}
}
else if (sendRelate > 0)
{
// uh... we haven't sent this message yet? Weird, dupe or error...
NetException.Assert(false, "Got ack for message not yet sent?");
return;
}
// Ok, lets resend all missing acks
int rnr = seqNr;
do
{
rnr--;
if (rnr < 0)
{
rnr = NetConstants.NumSequenceNumbers - 1;
}
if (m_receivedAcks[rnr])
{
// m_connection.m_peer.LogDebug("Not resending #" + rnr + " (since we got ack)");
}
else
{
int slot = rnr % m_windowSize;
NetException.Assert(m_storedMessages[slot].Message != null);
if (m_storedMessages[slot].NumSent == 1)
{
// just sent once; resend immediately since we found gap in ack sequence
NetOutgoingMessage rmsg = m_storedMessages[slot].Message;
//m_connection.m_peer.LogVerbose("Resending #" + rnr + " (" + rmsg + ")");
if (now - m_storedMessages[slot].LastSent < (m_resendDelay * 0.35))
{
// already resent recently
}
else
{
m_storedMessages[slot].LastSent = now;
m_storedMessages[slot].NumSent++;
m_connection.m_statistics.MessageResent(MessageResendReason.HoleInSequence);
Interlocked.Increment(ref rmsg.m_recyclingCount); // increment this since it's being decremented in QueueSendMessage
m_connection.QueueSendMessage(rmsg, rnr);
}
}
}
} while (rnr != m_windowStart);
}
// remoteWindowStart is remote expected sequence number; everything below this has arrived properly
// seqNr is the actual nr received
internal override void ReceiveAcknowledge(float now, int seqNr)
{
// late (dupe), on time or early ack?
int relate = NetUtility.RelativeSequenceNumber(seqNr, m_windowStart);
if (relate < 0)
{
return; // late/duplicate ack
}
if (relate == 0)
{
// ack arrived right on time
NetException.Assert(seqNr == m_windowStart);
m_receivedAcks[m_windowStart] = false;
DestoreMessage(m_windowStart % m_windowSize);
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
// advance window if we already have early acks
while (m_receivedAcks.Get(m_windowStart))
{
m_receivedAcks[m_windowStart] = false;
DestoreMessage(m_windowStart % m_windowSize);
NetException.Assert(m_storedMessages[m_windowStart % m_windowSize].Message == null); // should already be destored
m_windowStart = (m_windowStart + 1) % NetConstants.NumSequenceNumbers;
}
return;
}
//
// early ack... (if it has been sent!)
//
// If it has been sent either the m_windowStart message was lost
// ... or the ack for that message was lost
//
int sendRelate = NetUtility.RelativeSequenceNumber(seqNr, m_sendStart);
if (sendRelate <= 0)
{
// yes, we've sent this message - it's an early (but valid) ack
if (m_receivedAcks[seqNr])
{
// we've already destored/been acked for this message
}
else
{
m_receivedAcks[seqNr] = true;
}
}
else if (sendRelate > 0)
{
// uh... we haven't sent this message yet? Weird, dupe or error...
NetException.Assert(false, "Got ack for message not yet sent?");
return;
}
// Ok, lets resend all missing acks
int rnr = seqNr;
do
{
rnr--;
if (rnr < 0)
{
rnr = NetConstants.NumSequenceNumbers - 1;
}
if (!m_receivedAcks[rnr])
{
int slot = rnr % m_windowSize;
NetException.Assert(m_storedMessages[slot].Message != null);
if (m_storedMessages[slot].NumSent == 1)
{
// just sent once; resend immediately since we found gap in ack sequence
NetOutgoingMessage rmsg = m_storedMessages[slot].Message;
if (now - m_storedMessages[slot].LastSent < (m_resendDelay * 0.35f))
{
// already resent recently
}
else
{
m_storedMessages[slot].LastSent = now;
m_storedMessages[slot].NumSent++;
m_connection.m_statistics.MessageResent(MessageResendReason.HoleInSequence);
m_connection.QueueSendMessage(rmsg, rnr);
}
}
}
} while (rnr != m_windowStart);
}
