From 29c869fd3358066bec44a1f78b319a2f9169da0c Mon Sep 17 00:00:00 2001
From: Teravus Ovares
Date: Wed, 16 Jan 2008 06:04:33 +0000
Subject: * Fix for: http://opensimulator.org/mantis/view.php?id=358

---
 OpenSim/Region/ClientStack/ClientView.cs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'OpenSim/Region/ClientStack/ClientView.cs')

diff --git a/OpenSim/Region/ClientStack/ClientView.cs b/OpenSim/Region/ClientStack/ClientView.cs
index c1f4126..e74aee7 100644
--- a/OpenSim/Region/ClientStack/ClientView.cs
+++ b/OpenSim/Region/ClientStack/ClientView.cs
@@ -2373,8 +2373,19 @@ namespace OpenSim.Region.ClientStack
                     {
                         foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
                         {
-                            m_unAckedBytes -= m_needAck[block.ID].ToBytes().Length;
-                            m_needAck.Remove(block.ID);
+                            if (m_needAck.ContainsKey(block.ID))
+                            {
+                                try
+                                {
+                                    m_unAckedBytes -= m_needAck[block.ID].ToBytes().Length;
+                                    m_needAck.Remove(block.ID);
+                                }
+                                catch (System.Collections.Generic.KeyNotFoundException)
+                                {
+                                    // Did another packet come in with the ack already?  
+                                    // apparently so!
+                                }
+                            }
                         }
                     }
                 }
-- 
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