最近由于要做一些 Socket方面的项目，所以又温习了一下Socket和 TCP 协议编程的一些 基本知识，整理一下放在这里。
Socket ** 基本编程 **
** 服务端： ** ** **
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
Thread mythread ;
Socket socket;
// 清理所有正在使用的资源。
protected override void Dispose( bool disposing )
{
try
{
socket.Close(); // 释放资源
mythread.Abort ( ) ; // 中止线程
}
catch { }
if ( disposing )
{
if (components != null )
{
components.Dispose();
}
}
base .Dispose( disposing );
}
public static IPAddress GetServerIP()
{
IPHostEntry ieh=Dns.GetHostByName(Dns.GetHostName());
return ieh.AddressList[0];
}
private void BeginListen()
{
IPAddress ServerIp=GetServerIP();
IPEndPoint iep= new IPEndPoint(ServerIp,8000);
socket= new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
byte [] byteMessage= new byte [100];
this .label1.Text=iep.ToString();
socket.Bind(iep);
// do
while ( true )
{
try
{
socket.Listen(5);
Socket newSocket=socket.Accept();
newSocket.Receive(byteMessage);
string sTime = DateTime.Now.ToShortTimeString ( ) ;
string msg=sTime+":"+"Message from:";
msg+=newSocket.RemoteEndPoint.ToString()+Encoding.Default.GetString(byteMessage);
this .listBox1.Items.Add(msg);
}
catch (SocketException ex)
{
this .label1.Text+=ex.ToString();
}
}
// while(byteMessage!=null);
}
// 开始监听
private void button1_Click( object sender, System.EventArgs e)
{
try
{
mythread = new Thread( new ThreadStart(BeginListen));
mythread.Start();
}
catch (System.Exception er)
{
MessageBox.Show(er.Message," 完成 ",MessageBoxButtons.OK,MessageBoxIcon.Stop);
}
}
** 客户端： **
using System.Net;
using System.Net.Sockets;
using System.Text;
private void button1_Click( object sender, System.EventArgs e)
{
BeginSend();
}
private void BeginSend()
{
string ip= this .txtip.Text;
string port= this .txtport.Text;
IPAddress serverIp=IPAddress.Parse(ip);
int serverPort=Convert.ToInt32(port);
IPEndPoint iep= new IPEndPoint(serverIp,serverPort);
byte [] byteMessage;
// do
// {
Socket socket= new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
socket.Connect(iep);
byteMessage=Encoding.ASCII.GetBytes(textBox1.Text);
socket.Send(byteMessage);
socket.Shutdown(SocketShutdown.Both);
socket.Close();
// }
// while(byteMessage!=null);
}
**基于 TCP 协议的发送和接收端
**
**TCP协议的接收端
**
using System.Net.Sockets ; // 使用到 TcpListen 类
using System.Threading ; // 使用到线程
using System.IO ; // 使用到 StreamReader 类
int port = 8000; // 定义侦听端口号
private Thread thThreadRead; // 创建线程，用以侦听端口号，接收信息
private TcpListener tlTcpListen; // 侦听端口号
private bool blistener = true ; // 设定标示位，判断侦听状态
private NetworkStream nsStream; // 创建接收的基本数据流
private StreamReader srRead;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.ListBox listBox1; // 从网络基础数据流中读取数据
private TcpClient tcClient ;
private void Listen ( )
{
try
{
tlTcpListen = new TcpListener ( port ) ; // 以 8000 端口号来初始化 TcpListener 实例
tlTcpListen.Start ( ) ; // 开始监听
statusBar1.Text = " 正在监听 ..." ;
tcClient = tlTcpListen.AcceptTcpClient ( ) ; // 通过 TCP 连接请求
nsStream = tcClient.GetStream ( ) ; // 获取用以发送、接收数据的网络基础数据流
srRead= new StreamReader(nsStream); // 以得到的网络基础数据流来初始化 StreamReader 实例
statusBar1.Text = " 已经连接！ ";
while ( blistener ) // <SPAN style="FONT-SIZE: 9pt; COLOR: green; FONT-FAMILY: 新宋体; mso-hansi-font-family: 'Times New Roman'; mso-font-kerni