From e7170496becbdcd79b6a40d37fb88e050173ebe2 Mon Sep 17 00:00:00 2001
From: Charles Krinke
Date: Mon, 17 Dec 2007 16:39:11 +0000
Subject: Thank you, Kiryu for a patch to fix out of sync error in UDP server
 in the file UDPServer.cs. Submitted by Jeff Ames via Mantis#200

---
 OpenSim/Region/ClientStack/UDPServer.cs | 22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)

(limited to 'OpenSim/Region')

diff --git a/OpenSim/Region/ClientStack/UDPServer.cs b/OpenSim/Region/ClientStack/UDPServer.cs
index 2190fbf..55ef4a4 100644
--- a/OpenSim/Region/ClientStack/UDPServer.cs
+++ b/OpenSim/Region/ClientStack/UDPServer.cs
@@ -39,6 +39,7 @@ namespace OpenSim.Region.ClientStack
     public class UDPServer : ClientStackNetworkHandler
     {
         protected Dictionary<EndPoint, uint> clientCircuits = new Dictionary<EndPoint, uint>();
+        protected Dictionary<uint, EndPoint> clientCircuits_reverse = new Dictionary<uint, EndPoint>();
         public Socket Server;
         protected IPEndPoint ServerIncoming;
         protected byte[] RecvBuffer = new byte[4096];
@@ -176,6 +177,7 @@ namespace OpenSim.Region.ClientStack
         {
             UseCircuitCodePacket useCircuit = (UseCircuitCodePacket) packet;
             clientCircuits.Add(epSender, useCircuit.CircuitCode.Code);
+            clientCircuits_reverse.Add(useCircuit.CircuitCode.Code, epSender);
 
             PacketServer.AddNewClient(epSender, useCircuit, m_assetCache, m_authenticateSessionsClass);
         }
@@ -208,15 +210,7 @@ namespace OpenSim.Region.ClientStack
         {
             // find the endpoint for this circuit
             EndPoint sendto = null;
-            foreach (KeyValuePair<EndPoint, uint> p in clientCircuits)
-            {
-                if (p.Value == circuitcode)
-                {
-                    sendto = p.Key;
-                    break;
-                }
-            }
-            if (sendto != null)
+            if (clientCircuits_reverse.TryGetValue(circuitcode, out sendto))
             {
                 //we found the endpoint so send the packet to it
                 Server.SendTo(buffer, size, flags, sendto);
@@ -225,13 +219,11 @@ namespace OpenSim.Region.ClientStack
 
         public virtual void RemoveClientCircuit(uint circuitcode)
         {
-            foreach (KeyValuePair<EndPoint, uint> p in clientCircuits)
+            EndPoint sendto = null;
+            if (clientCircuits_reverse.TryGetValue(circuitcode, out sendto))
             {
-                if (p.Value == circuitcode)
-                {
-                    clientCircuits.Remove(p.Key);
-                    break;
-                }
+                clientCircuits.Remove(sendto);
+                clientCircuits_reverse.Remove(circuitcode);
             }
         }
     }
-- 
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