From 298376d5c7a8207f3c42f950cf9c212950038477 Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Tue, 19 Aug 2014 18:34:17 +0100
Subject: Add "debug lludp drop out <add|remove> <packet-name>" console command
 for debug/test purposes.

This drops all outbound packets that match a given packet name.
Can currently only be applied to all connections in a scene.
---
 .../Region/ClientStack/Linden/UDP/LLClientView.cs  | 27 ++++++++++++
 .../Region/ClientStack/Linden/UDP/LLUDPServer.cs   | 49 ++++++++++++++++++++++
 2 files changed, 76 insertions(+)

(limited to 'OpenSim')

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index 9d6085d..15a90af 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -12341,6 +12341,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// provide your own method.</param>
         protected void OutPacket(Packet packet, ThrottleOutPacketType throttlePacketType, bool doAutomaticSplitting, UnackedPacketMethod method)
         {
+            if (m_outPacketsToDrop != null)
+                if (m_outPacketsToDrop.Contains(packet.Type.ToString()))
+                    return;
+
             if (DebugPacketLevel > 0)
             {
                 bool logPacket = true;
@@ -13123,5 +13127,28 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             eq.Enqueue(BuildEvent("BulkUpdateInventory",
                     llsd), AgentId);
         }
+
+        private HashSet<string> m_outPacketsToDrop;
+
+        public bool AddOutPacketToDropSet(string packetName)
+        {
+            if (m_outPacketsToDrop == null)
+                m_outPacketsToDrop = new HashSet<string>();
+
+            return m_outPacketsToDrop.Add(packetName);
+        }
+
+        public bool RemoveOutPacketFromDropSet(string packetName)
+        {
+            if (m_outPacketsToDrop == null)
+                return false;
+
+            return m_outPacketsToDrop.Remove(packetName);
+        }
+
+        public HashSet<string> GetOutPacketDropSet()
+        {
+            return new HashSet<string>(m_outPacketsToDrop);
+        }
     }
 }
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index 3c9bb1b..549573b 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -698,6 +698,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                  HandlePacketCommand);
 
             MainConsole.Instance.Commands.AddCommand(
+                "Debug", false, "debug lludp drop out",
+                "debug lludp drop out <add|remove> <packet-name>",
+                "Drop all outbound packets that match the given name",
+                "For test purposes.",
+                HandleDropCommand);
+
+            MainConsole.Instance.Commands.AddCommand(
                 "Debug",
                 false,
                 "debug lludp start",
@@ -820,6 +827,48 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
+        private void HandleDropCommand(string module, string[] args)
+        {
+            if (SceneManager.Instance.CurrentScene != null && SceneManager.Instance.CurrentScene != Scene)
+                return;
+
+            if (args.Length != 6)
+            {
+                MainConsole.Instance.Output("Usage: debug lludp drop out <add|remove> <packet-name>");
+                return;
+            }
+
+            string subCommand = args[4];
+            string packetName = args[5];           
+
+            if (subCommand == "add")
+            {
+                MainConsole.Instance.OutputFormat(
+                    "Adding packet {0} to out drop list for all connections in {1}", packetName, Scene.Name);
+
+                Scene.ForEachScenePresence(
+                    sp =>
+                    {
+                        LLClientView llcv = (LLClientView)sp.ControllingClient;
+                        llcv.AddOutPacketToDropSet(packetName);
+                    }
+                );
+            }
+            else if (subCommand == "remove")
+            {
+                MainConsole.Instance.OutputFormat(
+                    "Removing packet {0} from out drop list for all connections in {1}", packetName, Scene.Name);
+
+                Scene.ForEachScenePresence(
+                    sp =>
+                    {
+                        LLClientView llcv = (LLClientView)sp.ControllingClient;
+                        llcv.RemoveOutPacketFromDropSet(packetName);
+                    }
+                );
+            }
+        }
+
         private void HandleStartCommand(string module, string[] args)
         {
             if (SceneManager.Instance.CurrentScene != null && SceneManager.Instance.CurrentScene != Scene)
-- 
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