revert failed throttle changes

1 files changed, 21 insertions, 24 deletions

diff --git a/protocol.c b/protocol.c
index 49b66de..9dde122 100644
--- a/protocol.c
+++ b/protocol.c
@@ -838,7 +838,6 @@ static int
 enet_protocol_handle_acknowledge (ENetHost * host, ENetEvent * event, ENetPeer * peer, const ENetProtocol * command)
 {
     enet_uint32 roundTripTime,
-           roundTripTimeVariance,
            receivedSentTime,
            receivedReliableSequenceNumber;
     ENetProtocolCommand commandNumber;
@@ -859,44 +858,42 @@ enet_protocol_handle_acknowledge (ENetHost * host, ENetEvent * event, ENetPeer *
 
     if (peer -> lastReceiveTime > 0)
     {
-       enet_uint32 accumRoundTripTime = (peer -> roundTripTime << 8) + peer -> roundTripTimeRemainder;
-       enet_uint32 accumRoundTripTimeVariance = (peer -> roundTripTimeVariance << 8) + peer -> roundTripTimeVarianceRemainder;
-
        enet_peer_throttle (peer, roundTripTime);
 
-       roundTripTime <<= 8;
-       accumRoundTripTimeVariance = (accumRoundTripTimeVariance * 3 + ENET_DIFFERENCE (roundTripTime, accumRoundTripTime)) / 4;
-       accumRoundTripTime = (accumRoundTripTime * 7 + roundTripTime) / 8;
-
-       peer -> roundTripTime = accumRoundTripTime >> 8;
-       peer -> roundTripTimeRemainder = accumRoundTripTime & 0xFF;
-       peer -> roundTripTimeVariance = accumRoundTripTimeVariance >> 8;
-       peer -> roundTripTimeVarianceRemainder = accumRoundTripTimeVariance & 0xFF;
+       peer -> roundTripTimeVariance -= peer -> roundTripTimeVariance / 4;
 
-       roundTripTime = (accumRoundTripTime + 128) >> 8;
-       roundTripTimeVariance = (accumRoundTripTimeVariance + 255) >> 8;
+       if (roundTripTime >= peer -> roundTripTime)
+       {
+          enet_uint32 diff = roundTripTime - peer -> roundTripTime;
+          peer -> roundTripTimeVariance += diff / 4;
+          peer -> roundTripTime += diff / 8;
+       }
+       else
+       {
+          enet_uint32 diff = peer -> roundTripTime - roundTripTime;
+          peer -> roundTripTimeVariance += diff / 4;
+          peer -> roundTripTime -= diff / 8;
+       }
     }
     else
     {
-       roundTripTimeVariance = (roundTripTime + 1) / 2;
-
        peer -> roundTripTime = roundTripTime;
-       peer -> roundTripTimeVariance = roundTripTimeVariance;
+       peer -> roundTripTimeVariance = (roundTripTime + 1) / 2;
     }
 
-    if (roundTripTime < peer -> lowestRoundTripTime)
-      peer -> lowestRoundTripTime = roundTripTime;
+    if (peer -> roundTripTime < peer -> lowestRoundTripTime)
+      peer -> lowestRoundTripTime = peer -> roundTripTime;
 
-    if (roundTripTimeVariance > peer -> highestRoundTripTimeVariance) 
-      peer -> highestRoundTripTimeVariance = roundTripTimeVariance;
+    if (peer -> roundTripTimeVariance > peer -> highestRoundTripTimeVariance)
+      peer -> highestRoundTripTimeVariance = peer -> roundTripTimeVariance;
 
     if (peer -> packetThrottleEpoch == 0 ||
         ENET_TIME_DIFFERENCE (host -> serviceTime, peer -> packetThrottleEpoch) >= peer -> packetThrottleInterval)
     {
         peer -> lastRoundTripTime = peer -> lowestRoundTripTime;
-        peer -> lastRoundTripTimeVariance = ENET_MAX (peer -> highestRoundTripTimeVariance, (peer -> lowestRoundTripTime + 15) / 16);
-        peer -> lowestRoundTripTime = roundTripTime;
-        peer -> highestRoundTripTimeVariance = ENET_MAX (roundTripTimeVariance, 3);
+        peer -> lastRoundTripTimeVariance = ENET_MAX (peer -> highestRoundTripTimeVariance, 1);
+        peer -> lowestRoundTripTime = peer -> roundTripTime;
+        peer -> highestRoundTripTimeVariance = peer -> roundTripTimeVariance;
         peer -> packetThrottleEpoch = host -> serviceTime;
     }