/* * 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.Net; using System.Net.Sockets; using libsecondlife.Packets; namespace OpenSim.Framework.Servers { public class UDPServerBase { public Socket Server; protected IPEndPoint ServerIncoming; protected byte[] RecvBuffer = new byte[4096]; protected byte[] ZeroBuffer = new byte[8192]; protected IPEndPoint ipeSender; protected EndPoint epSender; protected AsyncCallback ReceivedData; protected int listenPort; public UDPServerBase(int port) { listenPort = port; } protected virtual void OnReceivedData(IAsyncResult result) { ipeSender = new IPEndPoint(IPAddress.Parse("0.0.0.0"), 0); epSender = (EndPoint)ipeSender; Packet packet = null; int numBytes = Server.EndReceiveFrom(result, ref epSender); int packetEnd = numBytes - 1; packet = Packet.BuildPacket(RecvBuffer, ref packetEnd, ZeroBuffer); Server.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null); } protected virtual void AddNewClient(Packet packet) { } public virtual void ServerListener() { ServerIncoming = new IPEndPoint(IPAddress.Parse("0.0.0.0"), listenPort); Server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); Server.Bind(ServerIncoming); ipeSender = new IPEndPoint(IPAddress.Parse("0.0.0.0"), 0); epSender = (EndPoint)ipeSender; ReceivedData = new AsyncCallback(this.OnReceivedData); Server.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null); } public virtual void SendPacketTo(byte[] buffer, int size, SocketFlags flags, uint circuitcode) { } } }