215 lines
6.8 KiB
Plaintext
215 lines
6.8 KiB
Plaintext
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Net.Sockets;
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using System.Net;
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using System.Threading;
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namespace ConsoleApplication1
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{
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public class UdpMulticast
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{
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private Socket s;
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private Thread listenThread;
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private string mcastGroup;
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private int port;
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public UdpMulticast(string mcastGroup, int port)
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{
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this.mcastGroup = mcastGroup;
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this.port = port;
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}
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private void Listen()
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{
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while (true)
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{
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try
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{
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byte[] b = new byte[1024];
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Thread.Sleep(1);
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int recv = s.Receive(b);
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if (OnNewDataRecv != null)
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{
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byte[] tmp = new byte[recv];
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for (int i = 0; i < recv; i++)
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{
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tmp[i] = b[i];
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}
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byte[] decByte = Encryption.Decrypt(tmp);
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if (this.OnNewDataRecv != null)
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this.OnNewDataRecv(decByte, decByte.Length);
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}
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if (s == null)
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{
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break;
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}
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}
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catch (ThreadAbortException)
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{
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break;
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}
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catch (Exception ex)
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{
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SM.Debug("UdpMulticast.cs->Listen" + ex.ToString());
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}
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}
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}
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private void Listen_Decoded()
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{
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while (true)
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{
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try
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{
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byte[] b = new byte[1024];
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Thread.Sleep(1);
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int recv = s.Receive(b);
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if (OnNewDataRecv != null)
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{
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byte[] tmp = new byte[recv];
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for (int i = 0; i < recv; i++)
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{
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tmp[i] = b[i];
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}
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if (this.OnNewDataRecv != null)
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this.OnNewDataRecv(tmp, tmp.Length);
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}
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if (s == null)
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{
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break;
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}
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}
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catch (ThreadAbortException)
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{
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break;
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}
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catch (Exception ex)
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{
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SM.Debug("UdpMulticast.cs->Listen" + ex.ToString());
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}
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}
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}
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public delegate void newData4Send(byte[] data, int dataLen);
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public event newData4Send OnNewDataRecv;
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public bool StartListen()
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{
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bool ret = false;
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try
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{
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if (s == null)
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{
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s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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}
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if (s != null)
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{
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Console.WriteLine("PORT multi cast :" + port);
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IPEndPoint ipep = new IPEndPoint(IPAddress.Any, port);
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s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);
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s.Bind(ipep);
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IPAddress ip = IPAddress.Parse(mcastGroup);
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s.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(ip, IPAddress.Any));
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s.SetSocketOption(SocketOptionLevel.IP,
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SocketOptionName.MulticastTimeToLive, int.Parse("1"));
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listenThread = new Thread(new ThreadStart(Listen));
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listenThread.IsBackground = true;
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}
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if (listenThread != null)
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listenThread.Start();
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ret = true;
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}
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catch (Exception ex)
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{
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SM.Debug("Ex:" + ex.ToString());
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}
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return ret;
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}
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public bool StartListen_Decoded()
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{
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bool ret = false;
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try
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{
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if (s == null)
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{
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s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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}
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if (s != null)
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{
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Console.WriteLine("PORT multi cast :" + port);
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IPEndPoint ipep = new IPEndPoint(IPAddress.Any, port);
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s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);
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s.Bind(ipep);
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IPAddress ip = IPAddress.Parse(mcastGroup);
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s.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(ip, IPAddress.Any));
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s.SetSocketOption(SocketOptionLevel.IP,
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SocketOptionName.MulticastTimeToLive, int.Parse("1"));
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listenThread = new Thread(new ThreadStart(Listen_Decoded));
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listenThread.IsBackground = true;
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}
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if (listenThread != null)
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listenThread.Start();
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ret = true;
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}
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catch (Exception ex)
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{
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SM.Debug("Ex:" + ex.ToString());
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}
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return ret;
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}
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public void StopListen()
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{
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if (listenThread != null)
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{
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if (listenThread.IsAlive)
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{
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listenThread.Abort();
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listenThread = null;
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}
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}
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if (s != null)
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{
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s.Close();
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s = null;
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}
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}
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public void Send(byte[] data, int len)
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{
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if (s == null)
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{
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s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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}
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if (s != null)
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{
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IPEndPoint ipep = new IPEndPoint(IPAddress.Parse(mcastGroup), port);
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byte[] encByte = Encryption.Encrypt(data);
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s.SendTo(encByte, encByte.Length, SocketFlags.None, ipep);
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}
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else SM.Debug("s is NULL");
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}
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public void Send_decoded(byte[] data, int len)
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{
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if (s == null)
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{
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s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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}
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if (s != null)
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{
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IPEndPoint ipep = new IPEndPoint(IPAddress.Parse(mcastGroup), port);
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s.SendTo(data, data.Length, SocketFlags.None, ipep);
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}
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else SM.Debug("s is NULL");
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}
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}
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}
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