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c#基于WinForm的Socket實(shí)現(xiàn)簡(jiǎn)單的聊天室 IM

 更新時(shí)間：2021年05月06日 09:06:44   作者：天天向上518  
這篇文章主要介紹了c#基于WinForm的Socket實(shí)現(xiàn)簡(jiǎn)單的聊天室 IM的步驟，幫助大家更好的理解和學(xué)習(xí)使用c#，感興趣的朋友可以了解下

1：什么是Socket

所謂套接字(Socket)，就是對(duì)網(wǎng)絡(luò)中不同主機(jī)上的應(yīng)用進(jìn)程之間進(jìn)行雙向通信的端點(diǎn)的抽象。

一個(gè)套接字就是網(wǎng)絡(luò)上進(jìn)程通信的一端，提供了應(yīng)用層進(jìn)程利用網(wǎng)絡(luò)協(xié)議交換數(shù)據(jù)的機(jī)制。

從所處的地位來講，套接字上聯(lián)應(yīng)用進(jìn)程，下聯(lián)網(wǎng)絡(luò)協(xié)議棧，是應(yīng)用程序通過網(wǎng)絡(luò)協(xié)議進(jìn)行通信的接口，是應(yīng)用程序與網(wǎng)絡(luò)協(xié)議根進(jìn)行交互的接口。

2：客服端和服務(wù)端的通信簡(jiǎn)單流程

3：服務(wù)端Code：

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;

namespace ChartService
{
    using System.Net;
    using System.Net.Sockets;
    using System.Threading;
    using ChatCommoms;
    using ChatModels;

    public partial class ServiceForm : Form
    {
        Socket _socket;
        private static List<ChatUserInfo> userinfo = new List<ChatUserInfo>();
        public ServiceForm()
        {
            InitializeComponent();

        }

        private void btnServicStart_Click(object sender, EventArgs e)
        {
            try
            {
                string ip = textBox_ip.Text.Trim();
                string port = textBox_port.Text.Trim();
                if (string.IsNullOrWhiteSpace(ip) || string.IsNullOrWhiteSpace(port))
                {
                    MessageBox.Show("IP與端口不可以為空!");
                }
                ServiceStartAccept(ip, int.Parse(port));
            }
            catch (Exception)
            {
                MessageBox.Show("連接失敗！或者ip,端口參數(shù)異常");
            }
        }
        public void ServiceStartAccept(string ip, int port)
        {
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint endport = new IPEndPoint(IPAddress.Parse(ip), port);
            socket.Bind(endport);
            socket.Listen(10);
            Thread thread = new Thread(Recevice);
            thread.IsBackground = true;
            thread.Start(socket);
            textboMsg.AppendText("服務(wù)開啟ok...");
        }

        /// <summary>
        /// 開啟接聽服務(wù)
        /// </summary>
        /// <param name="obj"></param>
        private void Recevice(object obj)
        {
            var socket = obj as Socket;
            while (true)
            {
                string remoteEpInfo = string.Empty;
                try
                {
                    Socket txSocket = socket.Accept();
                    _socket = txSocket;
                    if (txSocket.Connected)
                    {
                        remoteEpInfo = txSocket.RemoteEndPoint.ToString();
                        textboMsg.AppendText($"\r\n{remoteEpInfo}:連接上線了...");
                        var clientUser = new ChatUserInfo
                        {
                            UserID = Guid.NewGuid().ToString(),
                            ChatUid = remoteEpInfo,
                            ChatSocket = txSocket
                        };
                        userinfo.Add(clientUser);


                        listBoxCoustomerList.Items.Add(new ChatUserInfoBase { UserID = clientUser.UserID, ChatUid = clientUser.ChatUid });
                        listBoxCoustomerList.DisplayMember = "ChatUid";
                        listBoxCoustomerList.ValueMember = "UserID";

                        ReceseMsgGoing(txSocket, remoteEpInfo);
                    }
                    else
                    {
                        if (userinfo.Count > 0)
                        {
                            userinfo.Remove(userinfo.Where(c => c.ChatUid == remoteEpInfo).FirstOrDefault());
                            //移除下拉框?qū)τ诘膕ocket或者叫用戶
                        }
                        break;
                    }
                }
                catch (Exception)
                {
                    if (userinfo.Count > 0)
                    {
                        userinfo.Remove(userinfo.Where(c => c.ChatUid == remoteEpInfo).FirstOrDefault());
                        //移除下拉框?qū)τ诘膕ocket或者叫用戶
                    }
                }
            }

        }

        /// <summary>
        /// 接受來自客服端發(fā)來的消息
        /// </summary>
        /// <param name="txSocket"></param>
        /// <param name="remoteEpInfo"></param>
        private void ReceseMsgGoing(Socket txSocket, string remoteEpInfo)
        {

            //退到一個(gè)客服端的時(shí)候 int getlength = txSocket.Receive(recesiveByte); 有拋異常
            Thread thread = new Thread(() =>
            {
                while (true)
                {
                    try
                    {
                        byte[] recesiveByte = new byte[1024 * 1024 * 4];
                        int getlength = txSocket.Receive(recesiveByte);
                        if (getlength <= 0) { break; }

                        var getType = recesiveByte[0].ToString();
                        string getmsg = Encoding.UTF8.GetString(recesiveByte, 1, getlength - 1);
                        ShowMsg(remoteEpInfo, getType, getmsg);
                    }
                    catch (Exception)
                    {
                        //string userid = userinfo.FirstOrDefault(c => c.ChatUid == remoteEpInfo)?.ChatUid;
                        listBoxCoustomerList.Items.Remove(remoteEpInfo);
                        userinfo.Remove(userinfo.FirstOrDefault(c => c.ChatUid == remoteEpInfo));//從集合中移除斷開的socket

                        listBoxCoustomerList.DataSource = userinfo;//重新綁定下來的信息
                        listBoxCoustomerList.DisplayMember = "ChatUid";
                        listBoxCoustomerList.ValueMember = "UserID";
                        txSocket.Dispose();
                        txSocket.Close();
                    }
                }
            });
            thread.IsBackground = true;
            thread.Start();

        }

        private void ShowMsg(string remoteEpInfo, string getType, string getmsg)
        {
            textboMsg.AppendText($"\r\n{remoteEpInfo}:消息類型:{getType}:{getmsg}");
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            this.textBox_ip.Text = "192.168.1.101";//初始值
            this.textBox_port.Text = "50000";
        }

        /// <summary>
        /// 服務(wù)器發(fā)送消息,可以先選擇要發(fā)送的一個(gè)用戶
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSendMsg_Click(object sender, EventArgs e)
        {
            var getmSg = textBoxSendMsg.Text.Trim();
            if (string.IsNullOrWhiteSpace(getmSg))
            {
                MessageBox.Show("要發(fā)送的消息不可以為空", "注意"); return;
            }
            var obj = listBoxCoustomerList.SelectedItem;
            int getindex = listBoxCoustomerList.SelectedIndex;
            if (obj == null || getindex == -1)
            {
                MessageBox.Show("請(qǐng)先選擇左側(cè)用戶的用戶"); return;
            }
            var getChoseUser = obj as ChatUserInfoBase;
            var sendMsg = ServiceSockertHelper.GetSendMsgByte(getmSg, ChatTypeInfoEnum.StringEnum);
            userinfo.FirstOrDefault(c => c.ChatUid == getChoseUser.ChatUid)?.ChatSocket?.Send(sendMsg);
        }

        /// <summary>
        /// 給所有登錄的用戶發(fā)送消息,群發(fā)了
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            var getmSg = textBoxSendMsg.Text.Trim();
            if (string.IsNullOrWhiteSpace(getmSg))
            {
                MessageBox.Show("要發(fā)送的消息不可以為空", "注意"); return;
            }
            if (userinfo.Count <= 0)
            {
                MessageBox.Show("暫時(shí)沒有客服端登錄！"); return;
            }
            var sendMsg = ServiceSockertHelper.GetSendMsgByte(getmSg, ChatTypeInfoEnum.StringEnum);
            foreach (var usersocket in userinfo)
            {
                usersocket.ChatSocket?.Send(sendMsg);
            }
        }

        /// <summary>
        /// 服務(wù)器給發(fā)送震動(dòng)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSendSnak_Click(object sender, EventArgs e)
        {
            var obj = listBoxCoustomerList.SelectedItem;
            int getindex = listBoxCoustomerList.SelectedIndex;
            if (obj == null || getindex == -1)
            {
                MessageBox.Show("請(qǐng)先選擇左側(cè)用戶的用戶"); return;
            }
            var getChoseUser = obj as ChatUserInfoBase;

            byte[] sendMsgByte = ServiceSockertHelper.GetSendMsgByte("", ChatTypeInfoEnum.Snake);
            userinfo.FirstOrDefault(c => c.ChatUid == getChoseUser.ChatUid)?.ChatSocket.Send(sendMsgByte);
        }


    }
}

4：客服端Code:

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;

namespace ChatClient
{
    using ChatCommoms;
    using System.Net;
    using System.Net.Sockets;
    using System.Threading;

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            this.textBoxIp.Text = "192.168.1.101";//先初始化一個(gè)默認(rèn)的ip等
            this.textBoxPort.Text = "50000";
        }

        Socket clientSocket;
        /// <summary>
        /// 客服端連接到服務(wù)器
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnServicStart_Click(object sender, EventArgs e)
        {
            try
            {
                var ipstr = textBoxIp.Text.Trim();
                var portstr = textBoxPort.Text.Trim();
                if (string.IsNullOrWhiteSpace(ipstr) || string.IsNullOrWhiteSpace(portstr))
                {
                    MessageBox.Show("要連接的服務(wù)器ip和端口都不可以為空！");
                    return;
                }
                clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                clientSocket.Connect(IPAddress.Parse(ipstr), int.Parse(portstr));
                labelStatus.Text = "連接到服務(wù)器成功...!";
                ReseviceMsg(clientSocket);

            }
            catch (Exception)
            {
                MessageBox.Show("請(qǐng)檢查要連接的服務(wù)器的參數(shù)");
            }
        }
        private void ReseviceMsg(Socket clientSocket)
        {

            Thread thread = new Thread(() =>
             {
                 while (true)
                 {
                     try
                     {
                         Byte[] byteContainer = new Byte[1024 * 1024 * 4];
                         int getlength = clientSocket.Receive(byteContainer);
                         if (getlength <= 0)
                         {
                             break;
                         }
                         var getType = byteContainer[0].ToString();
                         string getmsg = Encoding.UTF8.GetString(byteContainer, 1, getlength - 1);

                         GetMsgFomServer(getType, getmsg);
                     }
                     catch (Exception ex)
                     {
                     }
                 }
             });
            thread.IsBackground = true;
            thread.Start();

        }

        private void GetMsgFomServer(string strType, string msg)
        {
            this.textboMsg.AppendText($"\r\n類型：{strType};{msg}");
        }

        /// <summary>
        /// 文字消息的發(fā)送
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSendMsg_Click(object sender, EventArgs e)
        {
            var msg = textBoxSendMsg.Text.Trim();
            var sendMsg = ServiceSockertHelper.GetSendMsgByte(msg, ChatModels.ChatTypeInfoEnum.StringEnum);
            int sendMsgLength = clientSocket.Send(sendMsg);
        }
    }
}

5：測(cè)試效果：

6：完整Code GitHUb下載路徑 

https://github.com/zrf518/WinformSocketChat.git

7：這個(gè)只是一個(gè)簡(jiǎn)單的聊天練習(xí)Demo，待進(jìn)一步完善(實(shí)現(xiàn)部分功能，傳遞的消息byte[0]為消息的類型，用來判斷是文字，還是圖片等等)，歡迎大家指教

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