? ? ? ?在選擇使用協(xié)議的時候，選擇UDP必須要謹慎。在網(wǎng)絡(luò)質(zhì)量令人十分不滿意的環(huán)境下，UDP協(xié)議數(shù)據(jù)包丟失會比較嚴重。但是由于UDP的特性:它不屬于連接型協(xié)議，因而具有資源消耗小，處理速度快的優(yōu)點，所以通常音頻、視頻和普通數(shù)據(jù)在傳送時使用UDP較多，因為它們即使偶爾丟失一兩個數(shù)據(jù)包，也不會對接收結(jié)果產(chǎn)生太大影響。比如我們聊天用的ICQ和QQ就是使用的UDP協(xié)議。

服務(wù)端代碼

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Threading;


namespace UDP服務(wù)器
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            CheckForIllegalCrossThreadCalls = false;
            InitializeComponent();
            textBox1.Text = "127.0.0.1";
            textBox2.Text = "8401";
        }
        /// <summary>
        /// 獲取本地IP
        /// </summary>
        private void label1_Click(object sender, EventArgs e)
        {
            string ip = IPAddress.Any.ToString();
            textBox1.Text = ip;
        }

        Socket server;
        private void button2_Click(object sender, EventArgs e)
        {

            server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            server.Bind(new IPEndPoint(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text)));//綁定端口號和IP
            //server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
            listBox1.Items.Add("服務(wù)器已經(jīng)成功開啟!");
            //開啟接收消息線程
            Thread t = new Thread(ReciveMsg);
            t.IsBackground = true;
            t.Start();
        }
        /// <summary>
        /// 向特定ip的主機的端口發(fā)送數(shù)據(jù)
        /// </summary>te
        void SendMsg()
        {
            EndPoint point = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8400);    //向指定的IP和端口發(fā)送消息
            string msg = textBox3.Text;
            server.SendTo(Encoding.UTF8.GetBytes(msg), point);
        }


        /// <summary>
        /// 接收發(fā)送給本機ip對應(yīng)端口號的數(shù)據(jù)
        /// </summary>
        void ReciveMsg()
        {
            while (true)
            {
                EndPoint point = new IPEndPoint(IPAddress.Any, 0);//用來保存發(fā)送方的ip和端口號
                byte[] buffer = new byte[1024 * 1024];
                int length = server.ReceiveFrom(buffer, ref point);//接收數(shù)據(jù)報
                string message = Encoding.UTF8.GetString(buffer, 0, length);
                listBox1.Items.Add(point.ToString() + "：" + message);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox3.Text != "")
            {
                //開啟發(fā)送消息線程
                Thread t3 = new Thread(SendMsg);
                t3.Start();
                listBox1.Items.Add(textBox1.Text + "：" + textBox2.Text + "：" + textBox3.Text);
            }


        }


    }
}

客戶端代碼

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net.Sockets;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;

namespace UDP客戶端
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            CheckForIllegalCrossThreadCalls = false;
            InitializeComponent();
            textBox1.Text = "127.0.0.1";
            textBox2.Text = "8400";
        }
        /// <summary>
        /// 創(chuàng)建客戶端
        /// </summary>
        Socket client;

        private void button2_Click(object sender, EventArgs e)
        {
            
           

            ///創(chuàng)建客戶端
            client = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            client.Bind(new IPEndPoint(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text)));
            ///線程問題
            Thread thread = new Thread(ReciveMsg);
            thread.IsBackground = true;
            thread.Start(client);
            listBox1.Items.Add("客戶端已成功開啟!");
        }

        /// <summary>
        /// 向特定ip的主機的端口發(fā)送數(shù)據(jù)
        /// </summary>
        void SendMsg()
        {
            EndPoint point = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8401);    //向指定的IP和端口發(fā)送消息
            ///發(fā)送內(nèi)容
            string msg = textBox3.Text;
            ///將數(shù)據(jù)發(fā)送到指定的ip的主機的端口
            client.SendTo(Encoding.UTF8.GetBytes(msg), point);
        }
        /// <summary>
        /// 接收發(fā)送給本機ip對應(yīng)端口號的數(shù)據(jù)
        /// </summary>
        void ReciveMsg(object o)
        {

            while (true)
            {
                try
                {
                    ///用來保存發(fā)送方的ip和端口號
                    EndPoint point = new IPEndPoint(IPAddress.Any, 0);
                    //MessageBox.Show(point.ToString());
                    ///定義客戶端接收到的信息大小
                    byte[] buffer = new byte[1024 * 1024];
                    ///接收到的信息大小(所占字節(jié)數(shù))
                    int length = client.ReceiveFrom(buffer, ref point);
                    string message = Encoding.UTF8.GetString(buffer, 0, length);
                    listBox1.Items.Add(point.ToString() + "：" + message);
                }
                catch (Exception)
                {
                    client.Close();
                }

            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox3.Text != "")
            {
                //開啟發(fā)送消息線程
                Thread t2 = new Thread(SendMsg);
                t2.Start();
                listBox1.Items.Add(textBox1.Text + "：" + textBox2.Text + ":" + textBox3.Text);
            }

        }
    }
}

效果展示

代碼下載地址：

鏈接：https://pan.baidu.com/s/1r-V80I5fJ-8noF8YgMOlLA?
提取碼：qx3s文章來源地址http://www.zghlxwxcb.cn/news/detail-525583.html

到了這里，關(guān)于C# 使用UDP進行網(wǎng)絡(luò)通信的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！