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Code Issues Releases Activity

Added configuration setting to suppress acks for unreliable unordered messages

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This commit is contained in:
Michael Lidgren
2015-04-13 13:25:30 +02:00
parent 86a695cf2b
commit 2d060cced8
4 changed files with 30 additions and 4 deletions
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2
Lidgren.Network/NetConnection.cs
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@@ -377,7 +377,7 @@ namespace Lidgren.Network
{
case NetDeliveryMethod.Unreliable:
case NetDeliveryMethod.UnreliableSequenced:
chan = new NetUnreliableSenderChannel(this, NetUtility.GetWindowSize(method));
chan = new NetUnreliableSenderChannel(this, NetUtility.GetWindowSize(method), method);
break;
case NetDeliveryMethod.ReliableOrdered:
chan = new NetReliableSenderChannel(this, NetUtility.GetWindowSize(method));

16
Lidgren.Network/NetPeerConfiguration.cs
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@@ -58,6 +58,7 @@ namespace Lidgren.Network
internal bool m_enableUPnP;
internal bool m_autoFlushSendQueue;
private NetUnreliableSizeBehaviour m_unreliableSizeBehaviour;
internal bool m_suppressUnreliableUnorderedAcks;
internal NetIncomingMessageType m_disabledTypes;
internal int m_port;
@@ -112,6 +113,7 @@ namespace Lidgren.Network
m_resendHandshakeInterval = 3.0f;
m_maximumHandshakeAttempts = 5;
m_autoFlushSendQueue = true;
m_suppressUnreliableUnorderedAcks = true;
m_maximumTransmissionUnit = kDefaultMTU;
m_autoExpandMTU = false;
@@ -311,6 +313,20 @@ namespace Lidgren.Network
set { m_autoFlushSendQueue = value; }
}
/// <summary>
/// If true, will not send acks for unreliable unordered messages. This will save bandwidth, but disable flow control and duplicate detection for this type of messages.
/// </summary>
public bool SuppressUnreliableUnorderedAcks
{
get { return m_suppressUnreliableUnorderedAcks; }
set
{
if (m_isLocked)
throw new NetException(c_isLockedMessage);
m_suppressUnreliableUnorderedAcks = value;
}
}
/// <summary>
/// Gets or sets the local ip address to bind to. Defaults to IPAddress.Any. Cannot be changed once NetPeer is initialized.
/// </summary>

9
Lidgren.Network/NetUnreliableSenderChannel.cs
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@@ -12,12 +12,13 @@ namespace Lidgren.Network
private int m_windowStart;
private int m_windowSize;
private int m_sendStart;
private bool m_doFlowControl;
private NetBitVector m_receivedAcks;
internal override int WindowSize { get { return m_windowSize; } }
internal NetUnreliableSenderChannel(NetConnection connection, int windowSize)
internal NetUnreliableSenderChannel(NetConnection connection, int windowSize, NetDeliveryMethod method)
{
m_connection = connection;
m_windowSize = windowSize;
@@ -25,10 +26,16 @@ namespace Lidgren.Network
m_sendStart = 0;
m_receivedAcks = new NetBitVector(NetConstants.NumSequenceNumbers);
m_queuedSends = new NetQueue<NetOutgoingMessage>(8);
m_doFlowControl = true;
if (method == NetDeliveryMethod.Unreliable && connection.Peer.Configuration.SuppressUnreliableUnorderedAcks == true)
m_doFlowControl = false;
}
internal override int GetAllowedSends()
{
if (!m_doFlowControl)
return 2; // always allowed to send without flow control!
int retval = m_windowSize - ((m_sendStart + NetConstants.NumSequenceNumbers) - m_windowStart) % m_windowSize;
NetException.Assert(retval >= 0 && retval <= m_windowSize);
return retval;

7
Lidgren.Network/NetUnreliableUnorderedReceiver.cs
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@@ -4,15 +4,18 @@ namespace Lidgren.Network
{
internal sealed class NetUnreliableUnorderedReceiver : NetReceiverChannelBase
{
private bool m_doFlowControl;
public NetUnreliableUnorderedReceiver(NetConnection connection)
: base(connection)
{
m_doFlowControl = connection.Peer.Configuration.SuppressUnreliableUnorderedAcks == false;
}
internal override void ReceiveMessage(NetIncomingMessage msg)
{
// ack no matter what
m_connection.QueueAck(msg.m_receivedMessageType, msg.m_sequenceNumber);
if (m_doFlowControl)
m_connection.QueueAck(msg.m_receivedMessageType, msg.m_sequenceNumber);
m_peer.ReleaseMessage(msg);
}