通过无线网络在智能设备应用中接收udp [英] RECEIVE udp in smart device aplication via wireless network

问题描述

这是代码
我无法理解问题

this is the code
and I can''t understand the problem

using System;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace SmartDeviceProject3
{
    public partial class recv : Form
    {
        string mcastGroup, port;
        Thread t;
        public recv()
        {
            InitializeComponent();
            t = new Thread(new ThreadStart(receive));
        }
        private void button1_Click(object sender, EventArgs e)
        {
            mcastGroup = "224.5.6.7";
            port = "5000";
            t.Start();
        }
        private void receive()
        {
            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, int.Parse(port));
            s.Bind(ipep);
            IPAddress ip = IPAddress.Parse(mcastGroup);
            s.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(ip, IPAddress.Any));
            while (true)
            {
                byte[] b = new byte[10];
                Console.WriteLine("Waiting for data..");
                label1.Text = "Waiting for data .. ";
                s.Receive(b);
                string str = System.Text.Encoding.ASCII.GetString(b, 0, b.Length);
                Console.WriteLine();
                MessageBox.Show("RX: " + str.Trim());
                textBox1.Text += str.Trim();
            }
            
        }
    }
}

推荐答案

yasser_enpc写道:

yasser_enpc wrote:

这是代码
我无法理解问题

this is the code
and I can''t understand the problem

我们也不能！尝试用简单的术语进行解释.另外，请使用< pre></pre>标签以正确格式化您的代码；就像我上面所做的一样.这就是代码块"按钮在编辑窗口中的作用.

Neither can we! Try explaining it in simple terms. Also please use the <pre></pre> tags to format your code properly; like I did above. That is what the "code block" button is for in the edit window.

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