Added packet serialization, and a demo command for serialization to TestClient called packetlog

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@673 52acb1d6-8a22-11de-b505-999d5b087335

libsecondlife-cs/examples/TestClient/Commands/PacketLogCommand.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Xml;
+using libsecondlife;
+using libsecondlife.Packets;
+
+namespace libsecondlife.TestClient
+{
+    public class PacketLogCommand : Command
+    {
+        XmlWriter Writer;
+        bool Done = false;
+        int Count = 0;
+        int Total = 0;
+
+        public PacketLogCommand()
+        {
+            Name = "packetlog";
+            Description = "Logs a given number of packets to an xml file. Usage: packetlog 10 tenpackets.xml";
+        }
+
+        public override string Execute(SecondLife Client, string[] args, LLUUID fromAgentID)
+        {
+            if (args.Length != 2)
+                return "Usage: packetlog 10 tenpackets.xml";
+
+            Done = false;
+            Count = 0;
+            NetworkManager.PacketCallback callback = new NetworkManager.PacketCallback(OnPacket);
+
+            try
+            {
+                Total = Int32.Parse(args[0]);
+                Writer = XmlWriter.Create(args[1]);
+                Writer.WriteStartElement("packets");
+
+                Client.Network.RegisterCallback(PacketType.Default, callback);
+            }
+            catch (Exception e)
+            {
+                return "Usage: packetlog 10 tenpackets.xml" + Environment.NewLine + e;
+            }
+
+            while (!Done)
+            {
+                System.Threading.Thread.Sleep(100);
+            }
+
+            Client.Network.UnregisterCallback(PacketType.Default, callback);
+
+            lock (Writer)
+            {
+                Writer.WriteEndElement();
+                Writer.Close();
+            }
+
+            return "Exported " + Count + " packets to " + args[1];
+        }
+
+        private void OnPacket(Packet packet, Simulator simulator)
+        {
+            lock (Writer)
+            {
+                if (Writer.WriteState == WriteState.Error)
+                {
+                    Done = true;
+                }
+                else if (Count >= Total)
+                {
+                    Done = true;
+                }
+                else
+                {
+                    packet.ToXml(Writer);
+                    Count++;
+                }
+            }
+        }
+    }
+}