socket 聊天室

服务端：

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

namespace 服务端
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            Control.CheckForIllegalCrossThreadCalls = false;
        }

        /// <summary>
        /// 监听socket
        /// </summary>
        Socket socketListen;

        Dictionary<string, Socket> dirSocket = new Dictionary<string, Socket>();

        //户务端监听客户端连接情况
        private void btnListen_Click(object sender, EventArgs e)
        {
            try
            {
                socketListen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                IPAddress ip = IPAddress.Any;

                IPEndPoint point = new IPEndPoint(ip, Int32.Parse(txtPort.Text));

                socketListen.Bind(point);

                socketListen.Listen(10);

                showMsg("监听成功");

                Thread thread = new Thread(Listen);

                thread.IsBackground = true;

                thread.Start();
            }
            catch (Exception)
            {

            }

        }

        /// <summary>
        /// 监听客服端
        /// </summary>
        void Listen()
        {

            try
            {
                //不断的监听客户端
                while (true)
                {
                    Socket socket = socketListen.Accept();

                    showMsg(socket.RemoteEndPoint.ToString() + ":连接成功");

                    cbList.Items.Add(socket.RemoteEndPoint.ToString());

                    dirSocket.Add(socket.RemoteEndPoint.ToString(), socket);

                    //不断接受客户端信息
                    Thread thread = new Thread(Receive);

                    thread.IsBackground = true;

                    thread.Start(socket);

                }

            }
            catch (Exception)
            {

            }

        }
        /// <summary>
        /// 接收客服端的信息
        /// </summary>
        /// <param name="o"></param>
        void Receive(object o)
        {
            try
            {
                Socket socketSend = o as Socket;
                byte[] buffer = new byte[1024 * 1024 * 2];

                while (true)
                {
                    int r = socketSend.Receive(buffer);

                    if (r <= 0)
                    {
                        break;
                    }

                    string result = Encoding.UTF8.GetString(buffer, 0, r);

                    showMsg(socketSend.RemoteEndPoint.ToString() + ":" + result);

                }
            }
            catch (Exception)
            {

            }

        }

        /// <summary>
        /// 显示信息
        /// </summary>
        /// <param name="msg"></param>
        void showMsg(string msg)
        {
            txtLog.AppendText(msg + "\r\n");
        }

        /// <summary>
        /// 发送信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSendMsg_Click(object sender, EventArgs e)
        {
            string ipAddress = cbList.SelectedItem.ToString();

            if (string.IsNullOrEmpty(ipAddress))
            {
                return;
            }

            string msg = this.txtMsg.Text.Trim();

            byte[] msgBytes = Encoding.UTF8.GetBytes(msg);

            byte[] newArray = GetByteArray(0,msgBytes);

            dirSocket[ipAddress].Send(newArray);

        }

        /// <summary>
        /// 选择文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSelectFile_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                this.txtPath.Text = ofd.FileName;
            }

        }

        /// <summary>
        /// 发送文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSendFile_Click(object sender, EventArgs e)
        {
            string ipAddress = cbList.SelectedItem.ToString();

            if (string.IsNullOrEmpty(ipAddress))
            {
                return;
            }

            string filename = this.txtPath.Text.Trim();

            byte[] msgBytes = File.ReadAllBytes(filename);

            byte[] newArray = GetByteArray(1, msgBytes);

            dirSocket[ipAddress].Send(newArray);
        }

        /// <summary>
        /// 发送抖屏
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnMoveScreen_Click(object sender, EventArgs e)
        {
            string ipAddress = cbList.SelectedItem.ToString();

            if (string.IsNullOrEmpty(ipAddress))
            {
                return;
            }

            byte[] newArray = new byte[1] { 2 };

            dirSocket[ipAddress].Send(newArray);
        }

        /// <summary>
        /// 处理发送byte数据
        /// </summary>
        /// <param name="type"></param>
        /// <param name="array"></param>
        /// <returns></returns>
        private byte[] GetByteArray(int type,byte[] array)
        {
            byte[] newArray = new byte[array.Length+1];

            array.CopyTo(newArray, 1); 

            switch (type)
            {
                case 0:
                    newArray[0] = 0;
                    break;
                case 1:
                    newArray[0] = 1;
                    break;
                default:
                    newArray[0] = 2;
                    break;
            }

            return newArray;
        }

    }
}

客服端：

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

namespace 客户端
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            Control.CheckForIllegalCrossThreadCalls = false;
        }

        Socket socket;

        private void btnListen_Click(object sender, EventArgs e)
        {
            try
            {

                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                IPAddress ip = IPAddress.Parse(txtAddress.Text);

                IPEndPoint point = new IPEndPoint(ip, Int32.Parse(txtPort.Text));

                socket.Connect(point);

                showMsg("连接服务端成功！！！！");

                Thread thread = new Thread(Receive);

                thread.IsBackground = true;

                thread.SetApartmentState(ApartmentState.STA);

                thread.Start();
            }
            catch (Exception ex)
            {

            }
        }

        void Receive()
        {
            try
            {

                byte[] buffer = new byte[1024 * 1024 * 2];

                while (true)
                {

                    int r = socket.Receive(buffer);
                    if (r <= 0) break;

                    switch (buffer[0])
                    {
                        case 0 : //文本内容
                            GetMsg(buffer, r);
                            break;
                        case 1: //文本文件
                            GetFile(buffer, r);
                            break;

                        default: //抖屏
                            GetMoveScreen();
                            break;
                    }

                }
            }
            catch (Exception)
            {

            }
        }

        /// <summary>
        /// 接收内容
        /// </summary>
        /// <param name="array"></param>
        /// <param name="realLength"></param>
        void GetMsg(byte[] array,int realLength)
        {
            string msg = Encoding.UTF8.GetString(array, 1, realLength-1);

            showMsg(msg);
        }
        /// <summary>
        /// 接收文件
        /// </summary>
        /// <param name="array"></param>
        /// <param name="realLength"></param>
        void GetFile(byte[] array,int realLength)
        {
            SaveFileDialog sfd = new SaveFileDialog();

            if (sfd.ShowDialog() == DialogResult.OK)
            {
                string filename = sfd.FileName;

                using(FileStream fs = new FileStream(filename,FileMode.Create,FileAccess.ReadWrite))
                {
                    fs.Write(array, 1, realLength - 1);
                }

                showMsg("文件保存到:"+filename+"成功！！！");
            }
        }
        Random r = new Random();
        /// <summary>
        /// 抖屏
        /// </summary>
        void GetMoveScreen()
        {
            Point startPoint = this.Location;

            for (int i = 0; i < 200; i++)
            {
                this.Location = new Point(startPoint.X + r.Next(20), startPoint.Y + r.Next(20));
            }

            this.Location = startPoint;
        }

        /// <summary>
        /// 显示内容
        /// </summary>
        /// <param name="p"></param>
        private void showMsg(string p)
        {
            textBox1.AppendText(p + "\r\n");
        }

        /// <summary>
        /// 发送内容
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSend_Click(object sender, EventArgs e)
        {
            try
            {
                string msg = txtMsg.Text.Trim();

                byte[] buffer = Encoding.UTF8.GetBytes(msg);

                socket.Send(buffer);
            }
            catch (Exception)
            {

            }
        }

    }
}