108 lines
2.3 KiB
C#
108 lines
2.3 KiB
C#
using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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namespace BITKit.Net.LAN
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{
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/// <summary>
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/// 基于UDP的LAN广播
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/// </summary>
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public class UdpBasedLanBroadcaster : ILANBroadcaster
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{
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public int Port { get; set; }
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public byte[] Buffer { get; set; } = StringHelper.GetBytes("Hello World");
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private bool _isBroadcasting;
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private bool _isListening;
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public UdpBasedLanBroadcaster()
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{
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}
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public event Action<EndPoint, string> OnReceive;
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public void StartBroadcast()
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{
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_isBroadcasting = true;
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Thread thread = new(Process)
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{
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IsBackground = true
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};
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thread.Start();
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BIT4Log.Log<ILANBroadcaster>($"开始广播端口{Port}");
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}
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public void StopBroadcast()
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{
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_isBroadcasting = false;
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BIT4Log.Log<ILANBroadcaster>($"停止广播端口 {Port}");
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}
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public void StartListen()
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{
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_isListening = true;
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var thread = new Thread(ReceiveThread)
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{
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IsBackground = true
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};
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thread.Start();
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BIT4Log.Log<ILANBroadcaster>($"开始监听端口:{Port}");
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}
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public void StopListen()
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{
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_isListening = false;
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BIT4Log.Log<ILANBroadcaster>($"停止监听端口{Port}");
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}
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private void Process()
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{
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var udpClient = new UdpClient(new IPEndPoint(IPAddress.Any, 0));
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var endpoint = new IPEndPoint(IPAddress.Broadcast, Port);
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//其实 IPAddress.Broadcast 就是 255.255.255.255
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//下面代码与上面有相同的作用
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//IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("255.255.255.255"), 8080);
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try
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{
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while (_isBroadcasting)
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{
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udpClient.Send(Buffer, Buffer.Length, endpoint);
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Thread.Sleep(1000);
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}
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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udpClient.Dispose();
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}
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private void ReceiveThread()
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{
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try
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{
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var udpClient = new UdpClient(new IPEndPoint(IPAddress.Any, Port));
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var endpoint = new IPEndPoint(IPAddress.Any, 0);
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while (_isListening)
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{
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var buf = udpClient.Receive(ref endpoint);
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var msg = Encoding.Default.GetString(buf);
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if (OnReceive is not null)
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OnReceive(endpoint, msg);
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else
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BIT4Log.Log<ILANBroadcaster>($"Receive From {endpoint}:\t{msg}");
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Thread.Sleep(500);
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}
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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}
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}
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} |