1 files changed, 240 insertions, 0 deletions

diff --git a/ThirdParty/3Di/LoadBalancer/TcpClient.cs b/ThirdParty/3Di/LoadBalancer/TcpClient.cs
new file mode 100644
index 0000000..9f62d33
--- /dev/null
+++ b/ThirdParty/3Di/LoadBalancer/TcpClient.cs
@@ -0,0 +1,240 @@
+/*
+* Copyright (c) Contributors, http://opensimulator.org/
+* See CONTRIBUTORS.TXT for a full list of copyright holders.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of the OpenSim Project nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* 
+*/
+
+using System;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+using System.Text;
+using System.Runtime.Serialization.Formatters.Binary;
+
+namespace OpenSim.ApplicationPlugins.LoadBalancer {
+        public class AsynchronousClient {
+            private static ManualResetEvent connectDone = new ManualResetEvent(false);
+            private static ManualResetEvent sendDone = new ManualResetEvent(false);
+            private static ManualResetEvent receiveDone = new ManualResetEvent(false);
+            private static String response = String.Empty;
+
+            public static Socket StartClient(string hostname, int port) {
+                try {
+                    IPHostEntry ipHostInfo = Dns.GetHostEntry(hostname);
+                    IPAddress ipAddress = ipHostInfo.AddressList[0];
+                    IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
+
+                                Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+                                client.BeginConnect( remoteEP, new AsyncCallback(ConnectCallback), client);
+                    connectDone.WaitOne();
+                                /*
+                    Send(client,"This is a test<EOF>");
+                    sendDone.WaitOne();
+                    Receive(client);
+                    receiveDone.WaitOne();
+                    client.Shutdown(SocketShutdown.Both);
+                    client.Close();
+                                 */
+                                return client;
+                        } catch (Exception e) {
+                    Console.WriteLine(e.ToString());
+                                throw new Exception("socket error !!");
+                        }
+            }
+
+            private static void ConnectCallback(IAsyncResult ar) {
+                try {
+                    Socket client = (Socket) ar.AsyncState;
+                                client.EndConnect(ar);
+                    Console.WriteLine("Socket connected to {0}", client.RemoteEndPoint.ToString());
+                    connectDone.Set();
+                } catch (Exception e) {
+                    Console.WriteLine(e.ToString());
+                }
+            }
+
+/*
+            public static void Receive(Socket client) {
+                try {
+                    StateObject state = new StateObject();
+                    state.workSocket = client;
+                    client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
+                } catch (Exception e) {
+                    Console.WriteLine(e.ToString());
+                }
+            }
+
+            private static void ReceiveCallback( IAsyncResult ar ) {
+                try {
+                    StateObject state = (StateObject) ar.AsyncState;
+                    Socket client = state.workSocket;
+
+                                int bytesRead = client.EndReceive(ar);
+                    if (bytesRead > 0) {
+                                        state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead));
+                        client.BeginReceive(state.buffer,0,StateObject.BufferSize,0, new AsyncCallback(ReceiveCallback), state);
+                    } else {
+                        if (state.sb.Length > 1) {
+                            response = state.sb.ToString();
+                        }
+                        receiveDone.Set();
+                    }
+                } catch (Exception e) {
+                    Console.WriteLine(e.ToString());
+                }
+            }
+*/
+            public static void Send(Socket client, byte[] byteData) {
+                client.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), client);
+            }
+
+            private static void SendCallback(IAsyncResult ar) {
+                try {
+                    Socket client = (Socket) ar.AsyncState;
+                    int bytesSent = client.EndSend(ar);
+                    //Console.WriteLine("Sent {0} bytes to server.", bytesSent);
+                    sendDone.Set();
+                } catch (Exception e) {
+                    Console.WriteLine(e.ToString());
+                }
+            }
+        }
+
+public class InternalPacketHeader
+{
+        private byte[] buffer = new byte[32];
+        public int      type;
+        public int      throttlePacketType;
+        public int      numbytes;
+        public Guid     agent_id;
+        public int      region_port;
+
+        public void FromBytes(byte[] bytes)
+    {
+                int i = 0; // offset
+                try
+        {
+                        this.type = (int)(bytes[i++] + (bytes[i++] << 8) + (bytes[i++] << 16) + (bytes[i++] << 24));
+                        this.throttlePacketType = (int)(bytes[i++] + (bytes[i++] << 8) + (bytes[i++] << 16) + (bytes[i++] << 24));
+                        this.numbytes = (int)(bytes[i++] + (bytes[i++] << 8) + (bytes[i++] << 16) + (bytes[i++] << 24));
+                        this.agent_id = new Guid(
+                bytes[i++] | (bytes[i++] << 8) | (bytes[i++] << 16) | bytes[i++] << 24,
+                (short)(bytes[i++] | (bytes[i++] << 8)),
+                (short)(bytes[i++] | (bytes[i++] << 8)),
+                bytes[i++], bytes[i++], bytes[i++], bytes[i++],
+                bytes[i++], bytes[i++], bytes[i++], bytes[i++]);
+                        this.region_port = (int)(bytes[i++] + (bytes[i++] << 8) + (bytes[i++] << 16) + (bytes[i++] << 24));
+        }
+        catch (Exception)
+        {
+            throw new Exception("bad format!!!");
+        }
+    }
+
+        public byte[] ToBytes()
+    {
+                int i = 0;
+                this.buffer[i++] = (byte)(this.type % 256);
+        this.buffer[i++] = (byte)((this.type >> 8) % 256);
+        this.buffer[i++] = (byte)((this.type >> 16) % 256);
+        this.buffer[i++] = (byte)((this.type >> 24) % 256);
+
+                this.buffer[i++] = (byte)(this.throttlePacketType % 256);
+        this.buffer[i++] = (byte)((this.throttlePacketType >> 8) % 256);
+        this.buffer[i++] = (byte)((this.throttlePacketType >> 16) % 256);
+        this.buffer[i++] = (byte)((this.throttlePacketType >> 24) % 256);
+
+                this.buffer[i++] = (byte)(this.numbytes % 256);
+        this.buffer[i++] = (byte)((this.numbytes >> 8) % 256);
+        this.buffer[i++] = (byte)((this.numbytes >> 16) % 256);
+        this.buffer[i++] = (byte)((this.numbytes >> 24) % 256);
+
+                // no endian care
+                Buffer.BlockCopy(agent_id.ToByteArray(), 0, this.buffer, i, 16); i += 16;
+
+                this.buffer[i++] = (byte)(this.region_port % 256);
+        this.buffer[i++] = (byte)((this.region_port >> 8) % 256);
+        this.buffer[i++] = (byte)((this.region_port >> 16) % 256);
+        this.buffer[i++] = (byte)((this.region_port >> 24) % 256);
+
+                return this.buffer;
+        }
+}
+        public class TcpClient {
+
+                public static int internalPacketHeaderSize = 4*4 + 16*1;
+
+                private string mHostname;
+                private int mPort;
+                private Socket mConnection;
+                public TcpClient(string hostname, int port) {
+                        this.mHostname = hostname;
+                        this.mPort = port;
+                        this.mConnection = null;
+                }
+                public void connect() {
+                        this.mConnection = AsynchronousClient.StartClient(mHostname, mPort);
+                }
+/*
+                public void recevie() {
+                        if (mConnection == null) {
+                                throw new Exception("client not initialized");
+                        }
+                        try
+                        {
+                                AsynchronousClient.Receive(this.mConnection);
+                        }
+                        catch (Exception e)
+                        {
+                            Console.WriteLine(e.ToString());
+                                mConnection = null;
+                        }
+                }
+*/
+                public void send(InternalPacketHeader header, byte[] packet) {
+
+           lock (this)
+            {
+
+                        if (mConnection == null) {
+//                              throw new Exception("client not initialized");
+                                connect();
+                        }
+
+                        AsynchronousClient.Send(this.mConnection, header.ToBytes());
+
+/*
+for (int i = 0; i < 10; i++)
+{
+    Console.Write(packet[i] + " ");
+}
+Console.WriteLine("");
+*/
+                        AsynchronousClient.Send(this.mConnection, packet);
+            }
+                }
+        }
+}