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1/*
2* Copyright (c) Contributors, http://www.openmetaverse.org/
3* See CONTRIBUTORS.TXT for a full list of copyright holders.
4*
5* Redistribution and use in source and binary forms, with or without
6* modification, are permitted provided that the following conditions are met:
7* * Redistributions of source code must retain the above copyright
8* notice, this list of conditions and the following disclaimer.
9* * Redistributions in binary form must reproduce the above copyright
10* notice, this list of conditions and the following disclaimer in the
11* documentation and/or other materials provided with the distribution.
12* * Neither the name of the OpenSim Project nor the
13* names of its contributors may be used to endorse or promote products
14* derived from this software without specific prior written permission.
15*
16* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
17* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*
27*/
28using System;
29using System.Text;
30using System.IO;
31using System.Threading;
32using System.Net;
33using System.Net.Sockets;
34using System.Timers;
35using System.Reflection;
36using System.Collections;
37using System.Collections.Generic;
38using libsecondlife;
39using libsecondlife.Packets;
40using OpenSim.Region.Terrain;
41using OpenSim.Framework.Interfaces;
42using OpenSim.Framework.Types;
43using OpenSim.Assets;
44using OpenSim.Region.Caches;
45using OpenSim.Framework.Console;
46using OpenSim.Framework;
47using Nwc.XmlRpc;
48using OpenSim.Framework.Servers;
49
50namespace OpenSim.Region.ClientStack
51{
52
53 public class UDPServer : ClientStackNetworkHandler
54 {
55 protected Dictionary<EndPoint, uint> clientCircuits = new Dictionary<EndPoint, uint>();
56 public Socket Server;
57 protected IPEndPoint ServerIncoming;
58 protected byte[] RecvBuffer = new byte[4096];
59 protected byte[] ZeroBuffer = new byte[8192];
60 protected IPEndPoint ipeSender;
61 protected EndPoint epSender;
62 protected AsyncCallback ReceivedData;
63 protected PacketServer _packetServer;
64
65 protected int listenPort;
66 protected IWorld m_localWorld;
67 protected AssetCache m_assetCache;
68 protected InventoryCache m_inventoryCache;
69 protected LogBase m_log;
70 protected AuthenticateSessionsBase m_authenticateSessionsClass;
71
72 public PacketServer PacketServer
73 {
74 get
75 {
76 return _packetServer;
77 }
78 set
79 {
80 _packetServer = value;
81 }
82 }
83
84 public IWorld LocalWorld
85 {
86 set
87 {
88 this.m_localWorld = value;
89 this._packetServer.LocalWorld = this.m_localWorld;
90 }
91 }
92
93 public UDPServer()
94 {
95 }
96
97 public UDPServer(int port, AssetCache assetCache, InventoryCache inventoryCache, LogBase console, AuthenticateSessionsBase authenticateClass)
98 {
99 listenPort = port;
100 this.m_assetCache = assetCache;
101 this.m_inventoryCache = inventoryCache;
102 this.m_log = console;
103 this.m_authenticateSessionsClass = authenticateClass;
104 this.CreatePacketServer();
105
106 }
107
108 protected virtual void CreatePacketServer()
109 {
110 PacketServer packetServer = new PacketServer(this, (uint) listenPort);
111 }
112
113 protected virtual void OnReceivedData(IAsyncResult result)
114 {
115 ipeSender = new IPEndPoint(IPAddress.Any, 0);
116 epSender = (EndPoint)ipeSender;
117 Packet packet = null;
118 int numBytes = Server.EndReceiveFrom(result, ref epSender);
119 int packetEnd = numBytes - 1;
120
121 packet = Packet.BuildPacket(RecvBuffer, ref packetEnd, ZeroBuffer);
122
123 // do we already have a circuit for this endpoint
124 if (this.clientCircuits.ContainsKey(epSender))
125 {
126 //if so then send packet to the packetserver
127 this._packetServer.ClientInPacket(this.clientCircuits[epSender], packet);
128 }
129 else if (packet.Type == PacketType.UseCircuitCode)
130 {
131 // new client
132 this.AddNewClient(packet);
133 }
134 else
135 { // invalid client
136 m_log.Warn("UDPServer.cs:OnReceivedData() - WARNING: Got a packet from an invalid client - " + epSender.ToString());
137 }
138
139 Server.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null);
140 }
141
142 protected virtual void AddNewClient(Packet packet)
143 {
144 UseCircuitCodePacket useCircuit = (UseCircuitCodePacket)packet;
145 this.clientCircuits.Add(epSender, useCircuit.CircuitCode.Code);
146
147 this.PacketServer.AddNewClient(epSender, useCircuit, m_assetCache, m_inventoryCache, m_authenticateSessionsClass);
148 }
149
150 public void ServerListener()
151 {
152 m_log.Status("UDPServer.cs:ServerListener() - Opening UDP socket on " + listenPort);
153
154 ServerIncoming = new IPEndPoint(IPAddress.Any, listenPort);
155 Server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
156 Server.Bind(ServerIncoming);
157
158 m_log.Verbose("UDPServer.cs:ServerListener() - UDP socket bound, getting ready to listen");
159
160 ipeSender = new IPEndPoint(IPAddress.Any, 0);
161 epSender = (EndPoint)ipeSender;
162 ReceivedData = new AsyncCallback(this.OnReceivedData);
163 Server.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null);
164
165 m_log.Verbose("UDPServer.cs:ServerListener() - Listening...");
166
167 }
168
169 public virtual void RegisterPacketServer(PacketServer server)
170 {
171 this._packetServer = server;
172 }
173
174 public virtual void SendPacketTo(byte[] buffer, int size, SocketFlags flags, uint circuitcode)//EndPoint packetSender)
175 {
176 // find the endpoint for this circuit
177 EndPoint sendto = null;
178 foreach (KeyValuePair<EndPoint, uint> p in this.clientCircuits)
179 {
180 if (p.Value == circuitcode)
181 {
182 sendto = p.Key;
183 break;
184 }
185 }
186 if (sendto != null)
187 {
188 //we found the endpoint so send the packet to it
189 this.Server.SendTo(buffer, size, flags, sendto);
190 }
191 }
192
193 public virtual void RemoveClientCircuit(uint circuitcode)
194 {
195 foreach (KeyValuePair<EndPoint, uint> p in this.clientCircuits)
196 {
197 if (p.Value == circuitcode)
198 {
199 this.clientCircuits.Remove(p.Key);
200 break;
201 }
202 }
203 }
204
205
206 }
207} \ No newline at end of file
generated by cgit v1.1 at 2024-12-18 17:54:27 +0000