reinsert functionality to debug log more levels of incoming and outgoing client protocol packets

These levels correspond to packets that one isn't usually interested in when debugging (e.g. regular outgoing SimStats packets)
This is equivalent to what we had a year ago before it was removed.  It's extremely crude since it doesn't allow one to pick individual clients or packets.  However, it can still be useful when debugging packet race conditions.

OpenSim/Region/Application/OpenSim.cs

@@ -218,7 +218,13 @@ namespace OpenSim
 
             m_console.Commands.AddCommand("region", false, "debug packet",
                                           "debug packet <level>",
-                                          "Turn on packet debugging", Debug);
+                                          "Turn on packet debugging", 
+                                          "If level > 255 then all incoming and outgoing packets are logged.\n" 
+                                          + "If level <= 255 then incoming AgentUpdate and outgoing SimStats and SimulatorViewerTimeMessage packets are not logged.\n"
+                                          + "If level <= 200 then incoming RequestImage and outgoing ImagePacket, ImageData, LayerData and CoarseLocationUpdate packets are not logged.\n"
+                                          + "If level <= 100 then incoming ViewerEffect and AgentAnimation and outgoing ViewerEffect and AvatarAnimation packets are not logged.\n"
+                                          + "If level <= 0 then no packets are logged.",
+                                          Debug);
 
             m_console.Commands.AddCommand("region", false, "debug scene",
                                           "debug scene <cripting> <collisions> <physics>",

OpenSim/Region/Application/OpenSimBase.cs

@@ -36,7 +36,6 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Communications;
-
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
 using OpenSim.Framework.Servers.HttpServer;

OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs

@@ -60,7 +60,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
     public class LLClientView : IClientAPI, IClientCore, IClientIM, IClientChat, IClientIPEndpoint, IStatsCollector
     {
         /// <value>
-        /// Debug packet level.  At the moment, only 255 does anything (prints out all in and out packets).
+        /// Debug packet level.  See OpenSim.RegisterConsoleCommands() for more details.
         /// </value>
         protected int m_debugPacketLevel = 0;
         
@@ -11174,8 +11174,28 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// handles splitting manually</param>
         protected void OutPacket(Packet packet, ThrottleOutPacketType throttlePacketType, bool doAutomaticSplitting)
         {
-            if (m_debugPacketLevel >= 255)
-                m_log.DebugFormat("[CLIENT]: Packet OUT {0}", packet.Type);
+            if (m_debugPacketLevel > 0)
+            {
+                bool outputPacket = true;
+                                
+                if (m_debugPacketLevel <= 255 
+                    && (packet.Type == PacketType.SimStats || packet.Type == PacketType.SimulatorViewerTimeMessage))
+                    outputPacket = false;
+                
+                if (m_debugPacketLevel <= 200 
+                    && 
+                    (packet.Type == PacketType.ImagePacket 
+                        || packet.Type == PacketType.ImageData
+                        || packet.Type == PacketType.LayerData
+                        || packet.Type == PacketType.CoarseLocationUpdate)) 
+                    outputPacket = false;
+                
+                if (m_debugPacketLevel <= 100 && (packet.Type == PacketType.AvatarAnimation || packet.Type == PacketType.ViewerEffect))
+                    outputPacket = false;                
+                
+                if (outputPacket)
+                    m_log.DebugFormat("[CLIENT]: Packet OUT {0}", packet.Type);
+            }
             
             m_udpServer.SendPacket(m_udpClient, packet, throttlePacketType, doAutomaticSplitting);
         }
@@ -11246,15 +11266,29 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// Entryway from the client to the simulator.  All UDP packets from the client will end up here
         /// </summary>
         /// <param name="Pack">OpenMetaverse.packet</param>
-        public void ProcessInPacket(Packet Pack)
+        public void ProcessInPacket(Packet packet)
         {
-            if (m_debugPacketLevel >= 255)
-                m_log.DebugFormat("[CLIENT]: Packet IN {0}", Pack.Type);
+            if (m_debugPacketLevel > 0)
+            {
+                bool outputPacket = true;
+                                
+                if (m_debugPacketLevel <= 255 && packet.Type == PacketType.AgentUpdate)
+                    outputPacket = false;
+                
+                if (m_debugPacketLevel <= 200 && packet.Type == PacketType.RequestImage)
+                    outputPacket = false;
+                
+                if (m_debugPacketLevel <= 100 && (packet.Type == PacketType.ViewerEffect || packet.Type == PacketType.AgentAnimation))
+                    outputPacket = false;
+                
+                if (outputPacket)
+                    m_log.DebugFormat("[CLIENT]: Packet IN {0}", packet.Type);
+            }
 
-            if (!ProcessPacketMethod(Pack))
-                m_log.Warn("[CLIENT]: unhandled packet " + Pack.Type);
+            if (!ProcessPacketMethod(packet))
+                m_log.Warn("[CLIENT]: unhandled packet " + packet.Type);
 
-            PacketPool.Instance.ReturnPacket(Pack);
+            PacketPool.Instance.ReturnPacket(packet);
         }
 
         private static PrimitiveBaseShape GetShapeFromAddPacket(ObjectAddPacket addPacket)