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0.1-prestable
MW 2007-04-17 19:49:58 +00:00
parent 631d30b80d
commit ec790b8876
1 changed files with 0 additions and 437 deletions
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OpenSim.RegionServer/SimComms.cs
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@ -1,437 +0,0 @@
/*
Copyright (c) OpenSim project, http://osgrid.org/
*
* 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 <organization> 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 <copyright holder> ``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 <copyright holder> 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.Collections;
using System.Collections.Generic;
using libsecondlife;
using libsecondlife.Packets;
using Nwc.XmlRpc;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;
using System.Timers;
using OpenSim.Framework.Interfaces;
using OpenSim.Framework.Assets;
using OpenSim.Framework.Inventory;
using OpenSim.Framework.Utilities;
using OpenSim.world;
using OpenSim.Assets;
namespace OpenSim
{
public delegate bool PacketMethod(SimComms remoteSim, Packet packet);
/// <summary>
/// Handles sim<->sim communications
/// Constructor takes a single Packet and authenticates everything
/// </summary>
public class SimComms
{
public LLUUID SimUUID;
public bool m_child;
public uint CircuitCode;
private UseCircuitCodePacket cirpack;
public Thread ClientThread;
public EndPoint simEP;
private BlockingQueue<QueItem> PacketQueue;
private Dictionary<uint, uint> PendingAcks = new Dictionary<uint, uint>();
private Dictionary<uint, Packet> NeedAck = new Dictionary<uint, Packet>();
private System.Timers.Timer AckTimer;
private uint Sequence = 0;
private object SequenceLock = new object();
private const int MAX_APPENDED_ACKS = 10;
private const int RESEND_TIMEOUT = 4000;
private const int MAX_SEQUENCE = 0xFFFFFF;
private bool debug = false;
private World m_world;
private Dictionary<uint, SimComms> m_simThreads;
private IGridServer m_gridServer;
private IUserServer m_userServer = null;
private OpenSimNetworkHandler m_application;
//private bool m_sandboxMode; // I can think of no reason why we'd ever have this set in sandbox mode
protected static Dictionary<PacketType, PacketMethod> PacketHandlers = new Dictionary<PacketType, PacketMethod>(); //Global/static handlers for all sims
protected Dictionary<PacketType, PacketMethod> m_packetHandlers = new Dictionary<PacketType, PacketMethod>(); //local handlers for this instance
public IUserServer UserServer
{
set
{
this.m_userServer = value;
}
}
public SimComms(EndPoint remoteEP, UseCircuitCodePacket initialcirpack, World world, Dictionary<uint, SimComms> simThreads, IGridServer gridServer, OpenSimNetworkHandler application)
{
m_world = world;
m_clientThreads = clientThreads;
m_gridServer = gridServer;
m_application = application;
OpenSim.Framework.Console.MainConsole.Instance.WriteLine("SimComms.cs - Started up new thread to handle incoming request");
cirpack = initialcirpack;
simEP = remoteEP;
PacketQueue = new BlockingQueue<QueItem>();
AckTimer = new System.Timers.Timer(500);
AckTimer.Elapsed += new ElapsedEventHandler(AckTimer_Elapsed);
AckTimer.Start();
this.RegisterLocalPacketHandlers();
ClientThread = new Thread(new ThreadStart(AuthUser));
ClientThread.IsBackground = true;
ClientThread.Start();
}
protected virtual void RegisterLocalPacketHandlers()
{
/* this.AddLocalPacketHandler(PacketType.LogoutRequest, this.Logout);
this.AddLocalPacketHandler(PacketType.AgentCachedTexture, this.AgentTextureCached);
this.AddLocalPacketHandler(PacketType.MultipleObjectUpdate, this.MultipleObjUpdate);*/
}
public static bool AddPacketHandler(PacketType packetType, PacketMethod handler)
{
bool result = false;
lock (PacketHandlers)
{
if (!PacketHandlers.ContainsKey(packetType))
{
PacketHandlers.Add(packetType, handler);
result = true;
}
}
return result;
}
public bool AddLocalPacketHandler(PacketType packetType, PacketMethod handler)
{
bool result = false;
lock (m_packetHandlers)
{
if (!m_packetHandlers.ContainsKey(packetType))
{
m_packetHandlers.Add(packetType, handler);
result = true;
}
}
return result;
}
protected virtual bool ProcessPacketMethod(Packet packet)
{
bool result = false;
bool found = false;
PacketMethod method;
if (m_packetHandlers.TryGetValue(packet.Type, out method))
{
//there is a local handler for this packet type
result = method(this, packet);
}
else
{
//there is not a local handler so see if there is a Global handler
lock (PacketHandlers)
{
found = PacketHandlers.TryGetValue(packet.Type, out method);
}
if (found)
{
result = method(this, packet);
}
}
return result;
}
private void ack_pack(Packet Pack)
{
if (Pack.Header.Reliable)
{
libsecondlife.Packets.PacketAckPacket ack_it = new PacketAckPacket();
ack_it.Packets = new PacketAckPacket.PacketsBlock[1];
ack_it.Packets[0] = new PacketAckPacket.PacketsBlock();
ack_it.Packets[0].ID = Pack.Header.Sequence;
ack_it.Header.Reliable = false;
OutPacket(ack_it);
}
/*
if (Pack.Header.Reliable)
{
lock (PendingAcks)
{
uint sequence = (uint)Pack.Header.Sequence;
if (!PendingAcks.ContainsKey(sequence)) { PendingAcks[sequence] = sequence; }
}
}*/
}
protected virtual void ProcessInPacket(Packet Pack)
{
ack_pack(Pack);
if (this.ProcessPacketMethod(Pack))
{
//there is a handler registered that handled this packet type
return;
}
else
{
System.Text.Encoding _enc = System.Text.Encoding.ASCII;
switch (Pack.Type)
{
}
}
}
private void ResendUnacked()
{
int now = Environment.TickCount;
lock (NeedAck)
{
foreach (Packet packet in NeedAck.Values)
{
if ((now - packet.TickCount > RESEND_TIMEOUT) && (!packet.Header.Resent))
{
OpenSim.Framework.Console.MainConsole.Instance.WriteLine("Resending " + packet.Type.ToString() + " packet, " +
(now - packet.TickCount) + "ms have passed");
packet.Header.Resent = true;
OutPacket(packet);
}
}
}
}
private void SendAcks()
{
lock (PendingAcks)
{
if (PendingAcks.Count > 0)
{
if (PendingAcks.Count > 250)
{
// FIXME: Handle the odd case where we have too many pending ACKs queued up
OpenSim.Framework.Console.MainConsole.Instance.WriteLine("Too many ACKs queued up!");
return;
}
//OpenSim.Framework.Console.MainConsole.Instance.WriteLine("Sending PacketAck");
int i = 0;
PacketAckPacket acks = new PacketAckPacket();
acks.Packets = new PacketAckPacket.PacketsBlock[PendingAcks.Count];
foreach (uint ack in PendingAcks.Values)
{
acks.Packets[i] = new PacketAckPacket.PacketsBlock();
acks.Packets[i].ID = ack;
i++;
}
acks.Header.Reliable = false;
OutPacket(acks);
PendingAcks.Clear();
}
}
}
private void AckTimer_Elapsed(object sender, ElapsedEventArgs ea)
{
SendAcks();
ResendUnacked();
}
protected virtual void ProcessOutPacket(Packet Pack)
{
// Keep track of when this packet was sent out
Pack.TickCount = Environment.TickCount;
if (!Pack.Header.Resent)
{
// Set the sequence number
lock (SequenceLock)
{
if (Sequence >= MAX_SEQUENCE)
Sequence = 1;
else
Sequence++;
Pack.Header.Sequence = Sequence;
}
if (Pack.Header.Reliable) //DIRTY HACK
{
lock (NeedAck)
{
if (!NeedAck.ContainsKey(Pack.Header.Sequence))
{
NeedAck.Add(Pack.Header.Sequence, Pack);
}
else
{
// Client.Log("Attempted to add a duplicate sequence number (" +
// packet.Header.Sequence + ") to the NeedAck dictionary for packet type " +
// packet.Type.ToString(), Helpers.LogLevel.Warning);
}
}
// Don't append ACKs to resent packets, in case that's what was causing the
// delivery to fail
if (!Pack.Header.Resent)
{
// Append any ACKs that need to be sent out to this packet
lock (PendingAcks)
{
if (PendingAcks.Count > 0 && PendingAcks.Count < MAX_APPENDED_ACKS &&
Pack.Type != PacketType.PacketAck &&
Pack.Type != PacketType.LogoutRequest)
{
Pack.Header.AckList = new uint[PendingAcks.Count];
int i = 0;
foreach (uint ack in PendingAcks.Values)
{
Pack.Header.AckList[i] = ack;
i++;
}
PendingAcks.Clear();
Pack.Header.AppendedAcks = true;
}
}
}
}
}
byte[] ZeroOutBuffer = new byte[4096];
byte[] sendbuffer;
sendbuffer = Pack.ToBytes();
try
{
if (Pack.Header.Zerocoded)
{
int packetsize = Helpers.ZeroEncode(sendbuffer, sendbuffer.Length, ZeroOutBuffer);
m_application.SendPacketTo(ZeroOutBuffer, packetsize, SocketFlags.None, CircuitCode);//userEP);
}
else
{
m_application.SendPacketTo(sendbuffer, sendbuffer.Length, SocketFlags.None, CircuitCode); //userEP);
}
}
catch (Exception)
{
OpenSim.Framework.Console.MainConsole.Instance.WriteLine("SimComms.cs:ProcessOutPacket() - WARNING: Socket exception occurred on connection " + simEP.ToString() + " - killing thread");
ClientThread.Abort();
}
}
public virtual void InPacket(Packet NewPack)
{
// Handle appended ACKs
if (NewPack.Header.AppendedAcks)
{
lock (NeedAck)
{
foreach (uint ack in NewPack.Header.AckList)
{
NeedAck.Remove(ack);
}
}
}
// Handle PacketAck packets
if (NewPack.Type == PacketType.PacketAck)
{
PacketAckPacket ackPacket = (PacketAckPacket)NewPack;
lock (NeedAck)
{
foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
{
NeedAck.Remove(block.ID);
}
}
}
else if ((NewPack.Type == PacketType.StartPingCheck))
{
//reply to pingcheck
libsecondlife.Packets.StartPingCheckPacket startPing = (libsecondlife.Packets.StartPingCheckPacket)NewPack;
libsecondlife.Packets.CompletePingCheckPacket endPing = new CompletePingCheckPacket();
endPing.PingID.PingID = startPing.PingID.PingID;
OutPacket(endPing);
}
else
{
QueItem item = new QueItem();
item.Packet = NewPack;
item.Incoming = true;
this.PacketQueue.Enqueue(item);
}
}
public virtual void OutPacket(Packet NewPack)
{
QueItem item = new QueItem();
item.Packet = NewPack;
item.Incoming = false;
this.PacketQueue.Enqueue(item);
}
protected virtual void ClientLoop()
{
OpenSim.Framework.Console.MainConsole.Instance.WriteLine("SimComms.cs:ClientLoop() - Entered loop");
while (true)
{
QueItem nextPacket = PacketQueue.Dequeue();
if (nextPacket.Incoming)
{
//is a incoming packet
ProcessInPacket(nextPacket.Packet);
}
else
{
//is a out going packet
ProcessOutPacket(nextPacket.Packet);
}
}
}
}
}