Socket编程

客户端

 

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets ;
using System.Threading ;

namespace sock_user
{
    /// <summary>
    /// Form1 的摘要说明。
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.RichTextBox richTextBox1;
        private System.Windows.Forms.RichTextBox richTextBox2;
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private IPAddress myIP=IPAddress.Parse("127.0.0.1");  //把字符串转换为IPAddress格式;
        private IPEndPoint MyServer;
        private Socket connectsock;
        private bool check=true;
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Windows 窗体设计器支持所必需的
            //
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows 窗体设计器生成的代码
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.richTextBox2 = new System.Windows.Forms.RichTextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(2, 12);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(60, 16);
            this.label1.TabIndex = 0;
            this.label1.Text = "服务器IP:";
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(2, 48);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(60, 16);
            this.label2.TabIndex = 0;
            this.label2.Text = "请求端口:";
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point(2, 86);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(60, 16);
            this.label3.TabIndex = 0;
            this.label3.Text = "接受信息:";
            // 
            // label4
            // 
            this.label4.Location = new System.Drawing.Point(2, 158);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(60, 16);
            this.label4.TabIndex = 0;
            this.label4.Text = "发送信息:";
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(66, 8);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(94, 21);
            this.textBox1.TabIndex = 1;
            this.textBox1.Text = "";
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(66, 44);
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(94, 21);
            this.textBox2.TabIndex = 1;
            this.textBox2.Text = "";
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.listBox1);
            this.groupBox1.Location = new System.Drawing.Point(162, 2);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(332, 66);
            this.groupBox1.TabIndex = 2;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "客户状态";
            // 
            // listBox1
            // 
            this.listBox1.ItemHeight = 12;
            this.listBox1.Location = new System.Drawing.Point(4, 12);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(322, 52);
            this.listBox1.TabIndex = 0;
            // 
            // richTextBox1
            // 
            this.richTextBox1.Location = new System.Drawing.Point(66, 82);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(426, 64);
            this.richTextBox1.TabIndex = 3;
            this.richTextBox1.Text = "";
            // 
            // richTextBox2
            // 
            this.richTextBox2.Location = new System.Drawing.Point(66, 156);
            this.richTextBox2.Name = "richTextBox2";
            this.richTextBox2.Size = new System.Drawing.Size(426, 64);
            this.richTextBox2.TabIndex = 3;
            this.richTextBox2.Text = "";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(18, 240);
            this.button1.Name = "button1";
            this.button1.TabIndex = 4;
            this.button1.Text = "连接";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(128, 240);
            this.button2.Name = "button2";
            this.button2.TabIndex = 4;
            this.button2.Text = "发送信息";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(240, 240);
            this.button3.Name = "button3";
            this.button3.TabIndex = 4;
            this.button3.Text = "关闭连接";
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(530, 281);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.richTextBox1);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.richTextBox2);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button3);
            this.Name = "Form1";
            this.Text = "客户端";
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }

        private void Form1_Load(object sender, System.EventArgs e)
        {
        
        }

        private void button1_Click(object sender, System.EventArgs e)
        {
            string IpStr="";
            try
            {
                //把textBox1.Text输入的转换为IP地址
                IPHostEntry IPHost=Dns.Resolve(this.textBox1.Text);
                string teststr=IPHost.HostName;
                IPAddress[] addr=IPHost.AddressList;
                for(int i=0;i<addr.Length;i++)
                {
                    IpStr+=addr[i];
                }
            }
            catch(Exception er)
            {
                MessageBox.Show(er.Message);
            }
            //IP地址字符串转换为IPAddress格式;
            myIP=IPAddress.Parse (IpStr);

            try
            {
                MyServer=new IPEndPoint(myIP,Int32.Parse (textBox2.Text ));
                connectsock=new Socket(AddressFamily.InterNetwork ,SocketType.Stream ,ProtocolType.Tcp );
                connectsock.Connect (MyServer);
                if(!connectsock.Connected)
                {
                    MessageBox.Show("连接主机失败!");
                }
                else
                {
                    listBox1.Items.Add ("与主机"+textBox1.Text +"端口"+textBox2.Text+"连接成功！ ");
                    Thread thread=new Thread (new ThreadStart (receive));
                    thread.Start ();
                }
            }
            catch(Exception ee)
            {
                MessageBox.Show (ee.Message );
            }

        }

        private void button2_Click(object sender, System.EventArgs e)
        {
            try
            {
                Byte[] sendbyte=new Byte [64];
                string send=richTextBox2.Text +" ";
                //生成NetworkStream实例，用于发送基础数据流。


                NetworkStream netstream=new NetworkStream (connectsock);
                sendbyte=System.Text .Encoding .BigEndianUnicode .GetBytes (send.ToCharArray ());
                netstream.Write (sendbyte,0,sendbyte.Length );//向socket服务器发送信息。
                netstream.Flush ();
            }
            catch
            {
                MessageBox.Show ("连接没有建立！无法发送！");
            }

        }

        private void button3_Click(object sender, System.EventArgs e)
        {
            try
            {
                connectsock.Close ();//断开连接。
                listBox1.Items .Add ("与主机"+textBox1.Text +"端口"+textBox2.Text +"断开连接！ ");
            }
            catch
            {
                MessageBox.Show ("连接没有建立！断开无效！");
            }

        }

        private void receive()
        {
            while(true)
            {
                Byte[] Rec=new byte [64];
                NetworkStream netstream=new NetworkStream (connectsock);
                netstream.Read (Rec,0,Rec.Length );//读取客户发送来的信息。
                string RecMessage=System.Text .Encoding .BigEndianUnicode .GetString (Rec);
                richTextBox1.AppendText (RecMessage+" ");//写入到接收信息栏中。
            }
        }


    }
}

 服务端

 

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets ;
using System.Threading ;

namespace mySocket
{
    /// <summary>
    /// Form1 的摘要说明。
    /// </summary>
    public class StateObject : System.Windows.Forms.Form
    {
        #region
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.RichTextBox richTextBox1;
        private System.Windows.Forms.RichTextBox richTextBox2;
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;
        #endregion
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private IPAddress myIP=IPAddress.Parse("127.0.0.1");  //把字符串转换为IPAddress格式;
        private IPEndPoint MyServer;
        private Socket sock;
        private bool check=true;
        private Socket accsock;
        /// <summary>
        /// 
        /// </summary>
        private System.ComponentModel.Container components = null;

        public StateObject()
        {
            //
            // Windows 窗体设计器支持所必需的
            //
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows 窗体设计器生成的代码
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.richTextBox2 = new System.Windows.Forms.RichTextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(2, 12);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(60, 16);
            this.label1.TabIndex = 0;
            this.label1.Text = "服务器IP:";
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(184, 14);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(60, 16);
            this.label2.TabIndex = 0;
            this.label2.Text = "监听端口:";
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point(2, 60);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(60, 16);
            this.label3.TabIndex = 0;
            this.label3.Text = "接受信息:";
            // 
            // label4
            // 
            this.label4.Location = new System.Drawing.Point(2, 120);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(60, 16);
            this.label4.TabIndex = 0;
            this.label4.Text = "发送信息:";
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(66, 8);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(94, 21);
            this.textBox1.TabIndex = 1;
            this.textBox1.Text = "";
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(258, 12);
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(66, 21);
            this.textBox2.TabIndex = 1;
            this.textBox2.Text = "";
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.listBox1);
            this.groupBox1.Location = new System.Drawing.Point(8, 198);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(330, 110);
            this.groupBox1.TabIndex = 2;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "服务器状态";
            // 
            // listBox1
            // 
            this.listBox1.ItemHeight = 12;
            this.listBox1.Location = new System.Drawing.Point(4, 12);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(324, 88);
            this.listBox1.TabIndex = 0;
            // 
            // richTextBox1
            // 
            this.richTextBox1.Location = new System.Drawing.Point(66, 40);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(276, 64);
            this.richTextBox1.TabIndex = 3;
            this.richTextBox1.Text = "";
            // 
            // richTextBox2
            // 
            this.richTextBox2.Location = new System.Drawing.Point(66, 110);
            this.richTextBox2.Name = "richTextBox2";
            this.richTextBox2.Size = new System.Drawing.Size(274, 64);
            this.richTextBox2.TabIndex = 3;
            this.richTextBox2.Text = "";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(18, 312);
            this.button1.Name = "button1";
            this.button1.TabIndex = 4;
            this.button1.Text = "开始监听";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(128, 312);
            this.button2.Name = "button2";
            this.button2.TabIndex = 4;
            this.button2.Text = "发送信息";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(240, 312);
            this.button3.Name = "button3";
            this.button3.TabIndex = 4;
            this.button3.Text = "停止监听";
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // StateObject
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(372, 340);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.richTextBox1);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.richTextBox2);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button3);
            this.Name = "StateObject";
            this.Text = "服务器";
            this.Load += new System.EventHandler(this.StateObject_Load);
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new StateObject());
        }

        private void StateObject_Load(object sender, System.EventArgs e)
        {
        
        }

        private void button1_Click(object sender, System.EventArgs e)
        {
            string IpStr="";
            try
            {
                //把textBox1.Text输入的转换为IP地址
                IPHostEntry IPHost=Dns.Resolve(this.textBox1.Text);
                string teststr=IPHost.HostName;
                IPAddress[] addr=IPHost.AddressList;
                for(int i=0;i<addr.Length;i++)
                {
                    IpStr+=addr[i];
                }
            }
            catch(Exception er)
            {
                MessageBox.Show(er.Message);
            }
            //IP地址字符串转换为IPAddress格式;
            myIP=IPAddress.Parse (IpStr);
            try
            {
                Thread thread=new Thread (new ThreadStart (accp)); //生成监听线程；
                thread.Start ();
            }
            catch(Exception ee)
            {
                listBox1.Items.Add (ee.Message) ;
            }

        }
        
        private void accp()
        {
            MyServer=new IPEndPoint (myIP,Int32.Parse (textBox2.Text));//组合将访问主机的IP地址和端口号。
            sock=new Socket (AddressFamily.InterNetwork ,SocketType.Stream ,ProtocolType.Tcp );//实例化Socket对象。
            sock.Bind(MyServer);//绑定将访问的主机。
            sock.Listen (50);//开始监听，最大包长50。
            listBox1.Items.Add ("主机"+textBox1.Text +"端口"+textBox2.Text +"开始监听...... ");
            while(true)
            {
                accsock=sock.Accept ();//接收客户端的服务请求。
                if(accsock.Connected)
                {
                    listBox1.Items.Add ("与客户建立连接。");
                    Thread thread=new Thread (new ThreadStart (round));//如果有客户请求，生成与客户通信的线程。
                    thread.Start ();
                }
            }
        }

        private void round()
        {
            while(true)
            {
                Byte[] Rec=new byte [64];
                NetworkStream netstream=new NetworkStream (accsock);
                netstream.Read (Rec,0,Rec.Length );//读取客户发送来的信息。
                string RecMessage=System.Text .Encoding .BigEndianUnicode .GetString (Rec);
                richTextBox1.AppendText (RecMessage+" ");//写入到接收信息栏中。
            }
        }

        private void button2_Click(object sender, System.EventArgs e)
        {
            try
            {
                Byte[] sendbyte=new Byte [64];
                string send=richTextBox2.Text +" ";
                NetworkStream netstream=new NetworkStream (accsock);//生成NetworkStream实例，用于发送基础数据流。
                sendbyte=System.Text .Encoding .BigEndianUnicode .GetBytes (send.ToCharArray ());
                netstream.Write (sendbyte,0,sendbyte.Length );//向客户发送信息。
            }
            catch
            {
                MessageBox.Show ("连接没有建立！无法发送！");
            }

        }

        private void button3_Click(object sender, System.EventArgs e)
        {
            try
            {
                sock.Close ();//停止监听服务。
                listBox1.Items .Add ("主机"+textBox1.Text +"端口"+textBox2.Text +"停止监听。 ");
            }
            catch
            {
                MessageBox.Show ("监听没有建立！关闭无效！");
            }
        }

    

        

    }
}