用Socket实现的简单客户端和服务端程序（一）

 首先需要了解下Socket的原理，我在前面已经说过了可以参考http://blog.youkuaiyun.com/RoyYeah/archive/2009/11/06/4778552.aspx

接下来我们用VS2008建立两项目是ServerWindowsForms和ClientWindowsFroms

我实现的是监听本地主机（127.0.0.1）的8080端口

 

 

 

一 ServerWindowsForms的代码如下

 

ServerWindowsForms.Desinger.cs的代码如下

namespace ServerWindowsForms { partial class ServerForm { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (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.ListenButton = new System.Windows.Forms.Button(); this.InforRichTextBox = new System.Windows.Forms.RichTextBox(); this.label1 = new System.Windows.Forms.Label(); this.SuspendLayout(); // // ListenButton // this.ListenButton.Location = new System.Drawing.Point(222, 269); this.ListenButton.Name = "ListenButton"; this.ListenButton.Size = new System.Drawing.Size(112, 43); this.ListenButton.TabIndex = 0; this.ListenButton.Text = "开始监听"; this.ListenButton.UseVisualStyleBackColor = true; this.ListenButton.Click += new System.EventHandler(this.ListenButton_Click); // // InforRichTextBox // this.InforRichTextBox.Location = new System.Drawing.Point(69, 50); this.InforRichTextBox.Name = "InforRichTextBox"; this.InforRichTextBox.Size = new System.Drawing.Size(410, 192); this.InforRichTextBox.TabIndex = 1; this.InforRichTextBox.Text = ""; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(69, 32); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(29, 12); this.label1.TabIndex = 2; this.label1.Text = "信息"; // // ServerForm // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(550, 377); this.Controls.Add(this.label1); this.Controls.Add(this.InforRichTextBox); this.Controls.Add(this.ListenButton); this.Name = "ServerForm"; this.Text = "ServerForm"; this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.Button ListenButton; private System.Windows.Forms.RichTextBox InforRichTextBox; private System.Windows.Forms.Label label1; } }

ServerWindowsForms.cs的代码如下

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; using System.Net.Sockets; using System.Threading; namespace ServerWindowsForms { public partial class ServerForm : Form { private Socket socke; private IPEndPoint Server; private IPAddress ip; private Socket accSocket; public ServerForm() { InitializeComponent(); socke = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); ip = IPAddress.Parse("127.0.0.1"); Server = new IPEndPoint(ip, 8080); } private void ListenButton_Click(object sender, EventArgs e) { try { Thread thread = new Thread(new ThreadStart(Connection)); thread.Start(); } catch(Exception se) { MessageBox.Show(se.Message); } } private void Connection() { socke.Bind(Server); socke.Listen(80); while(true) { try { Control.CheckForIllegalCrossThreadCalls = false; accSocket=socke.Accept(); if(accSocket.Connected) { InforRichTextBox.AppendText(Dns.GetHostName()+"与客户端建立联系/r/n"); while(true) { byte[] accBytes=new byte[1024]; string accStr=""; int accNum=0; NetworkStream ns = new NetworkStream(accSocket); accNum = ns.Read(accBytes,0,accBytes.Length); if(accNum<=0) break; accStr = System.Text.Encoding.ASCII.GetString(accBytes); InforRichTextBox.AppendText(accStr); } } } catch(Exception ex) { MessageBox.Show(ex.Message); } } } } }

 

 

 

 

 

二  ClientWindowsForms的代码如下

ClientWindowsForms.Desinger.cs的代码如下

namespace ClientWindowsForms { partial class ClientForm { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (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.SendButton = new System.Windows.Forms.Button(); this.SendRichTextBox = new System.Windows.Forms.RichTextBox(); this.IPTextBox = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.PortTextBox = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // SendButton // this.SendButton.Location = new System.Drawing.Point(168, 252); this.SendButton.Name = "SendButton"; this.SendButton.Size = new System.Drawing.Size(115, 49); this.SendButton.TabIndex = 0; this.SendButton.Text = "发送"; this.SendButton.UseVisualStyleBackColor = true; this.SendButton.Click += new System.EventHandler(this.SendButton_Click); // // SendRichTextBox // this.SendRichTextBox.Location = new System.Drawing.Point(85, 100); this.SendRichTextBox.Name = "SendRichTextBox"; this.SendRichTextBox.Size = new System.Drawing.Size(282, 120); this.SendRichTextBox.TabIndex = 1; this.SendRichTextBox.Text = ""; // // IPTextBox // this.IPTextBox.Location = new System.Drawing.Point(118, 27); this.IPTextBox.Name = "IPTextBox"; this.IPTextBox.Size = new System.Drawing.Size(249, 21); this.IPTextBox.TabIndex = 2; this.IPTextBox.Text = "127.0.0.1"; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(83, 30); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(17, 12); this.label1.TabIndex = 3; this.label1.Text = "IP"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(83, 67); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(29, 12); this.label2.TabIndex = 5; this.label2.Text = "端口"; // // PortTextBox // this.PortTextBox.Location = new System.Drawing.Point(118, 64); this.PortTextBox.Name = "PortTextBox"; this.PortTextBox.Size = new System.Drawing.Size(249, 21); this.PortTextBox.TabIndex = 4; this.PortTextBox.Text = "8080"; // // ClientForm // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(455, 364); this.Controls.Add(this.label2); this.Controls.Add(this.PortTextBox); this.Controls.Add(this.label1); this.Controls.Add(this.IPTextBox); this.Controls.Add(this.SendRichTextBox); this.Controls.Add(this.SendButton); this.Name = "ClientForm"; this.Text = "ClientForm"; this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.Button SendButton; private System.Windows.Forms.RichTextBox SendRichTextBox; private System.Windows.Forms.TextBox IPTextBox; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox PortTextBox; } }

ClientWindowsForms.cs的代码如下

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; using System.Net.Sockets; namespace ClientWindowsForms { public partial class ClientForm : Form { private Socket sendsocke; private IPEndPoint ServerEP; private IPAddress ip; private int port; public ClientForm() { InitializeComponent(); } private void SendButton_Click(object sender, EventArgs e) { ip = IPAddress.Parse(IPTextBox.Text.Trim()); port = Int32.Parse(PortTextBox.Text.Trim()); ServerEP = new IPEndPoint(ip, port); sendsocke = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp); string sendMessageStr = SendRichTextBox.Text.Trim()+"/r/n"; try { sendsocke.Connect(ServerEP); if (sendsocke.Connected) { byte[] sendBytes = new byte[1024]; NetworkStream ns = new NetworkStream(sendsocke); sendBytes = System.Text.Encoding.ASCII.GetBytes(sendMessageStr.ToCharArray()); ns.Write(sendBytes, 0, sendBytes.Length); } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { sendsocke.Shutdown(SocketShutdown.Both); sendsocke.Close(); } } } }

 

该程序在Windows 7 下用vs2008调试通过。