最q由于要做一些Socket斚w的项目,所以又温习了一下Socket和TCP协议~程的一些基本知识,整理一下放在这里?/p>
Socket基本~程
服务端:
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
Thread mythread ;
Socket socket;
// 清理所有正在用的资源?/p>
protected override void Dispose( bool disposing )
{
try
{
socket.Close();//释放资源
mythread.Abort ( ) ;//中止U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?/p>
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);
}
ZTCP协议的发送和接收?/p>
TCP协议的接收端
using System.Net.Sockets ; //使用到TcpListenc?/p>
using System.Threading ; //使用到线E?
using System.IO ; //使用到StreamReaderc?/p>
int port = 8000; //定义侦听端口?/p>
private Thread thThreadRead; //创徏U程Q用以侦听端口号Q接收信?/p>
private TcpListener tlTcpListen; //侦听端口?/p>
private bool blistener = true; //讑֮标示位,判断侦听状?/p>
private NetworkStream nsStream; //创徏接收的基本数据流
private StreamReader srRead;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.ListBox listBox1; //从网l基数据中d数据
private TcpClient tcClient ;
private void Listen ( )
{
try
{
tlTcpListen = new TcpListener ( port ) ; //?000端口h初始化TcpListener实例
tlTcpListen.Start ( ) ; //开始监?/p>
statusBar1.Text = "正在监听..." ;
tcClient = tlTcpListen.AcceptTcpClient ( ) ; //通过TCPq接h
nsStream = tcClient.GetStream ( ) ; //获取用以发送、接收数据的|络基础数据?/p>
srRead=new StreamReader(nsStream);//以得到的|络基础数据来初始化StreamReader实例
statusBar1.Text = "已经q接Q?;
while( blistener ) //循环侦听
{
string sMessage = srRead.ReadLine();//从网l基数据中d一行数?
if ( sMessage == "STOP" ) //判断是否为断开TCPq接控制?/p>
{
tlTcpListen.Stop(); //关闭侦听
nsStream.Close(); //释放资源
srRead.Close();
statusBar1.Text = "q接已经关闭Q? ;
thThreadRead.Abort(); //中止U程
return;
}
string sTime = DateTime.Now.ToShortTimeString ( ) ; //获取接收数据时的旉
listBox1.Items.Add ( sTime + " " + sMessage ) ;
}
}
catch ( System.Security.SecurityException )
{
MessageBox.Show ( "侦听p|Q? , "错误" ) ;
}
}
//开始监?/p>
private void button1_Click(object sender, System.EventArgs e)
{
thThreadRead = new Thread ( new ThreadStart ( Listen ) );
thThreadRead.Start();//启动U程
button1.Enabled=false;
}
// 清理所有正在用的资源?/p>
protected override void Dispose( bool disposing )
{
try
{
tlTcpListen.Stop(); //关闭侦听
nsStream.Close();
srRead.Close();//释放资源
thThreadRead.Abort();//中止U程
}
catch{}
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
TCP协议的发送端
using System.Net.Sockets; //使用到TcpListenc?/p>
using System.Threading; //使用到线E?/p>
using System.IO; //使用到StreamWriterc?/p>
using System.Net; //使用IPAddresscRIPHostEntrycȝ
private StreamWriter swWriter; //用以向网l基数据传送数据
private NetworkStream nsStream; //创徏发送数据的|络基础数据
private TcpClient tcpClient;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2; //通过它实现向q程L提出TCPq接甌
private bool tcpConnect = false; //定义标识W,用以表示TCPq接是否建立
//q接
private void button1_Click(object sender, System.EventArgs e)
{
IPAddress ipRemote ;
try
{
ipRemote = IPAddress.Parse ( textBox1.Text ) ;
}
catch //判断l定的IP地址的合法?/p>
{
MessageBox.Show ( "输入的IP地址不合法!" , "错误提示Q? ) ;
return ;
}
IPHostEntry ipHost ;
try
{
ipHost = Dns.Resolve ( textBox1.Text ) ;
}
catch //判断IP地址对应L是否在线
{
MessageBox.Show ("q程L不在U!" , "错误提示Q? ) ;
return ;
}
string sHostName = ipHost.HostName ;
try
{
TcpClient tcpClient = new TcpClient(sHostName,8000);//对远E主机的8000端口提出TCPq接甌
nsStream = tcpClient.GetStream();//通过甌Qƈ获取传送数据的|络基础数据
swWriter = new StreamWriter(nsStream);//使用获取的网l基数据来初始化StreamWriter实例
button1.Enabled = false ;
button2.Enabled = true ;
tcpConnect = true ;
statusBar1.Text = "已经q接Q? ;
}
catch
{
MessageBox.Show ( "无法和远E主?000端口建立q接Q? , "错误提示Q? ) ;
return ;
}
}
//发?/p>
private void button2_Click(object sender, System.EventArgs e)
{
if (textBox2.Text !="")
{
swWriter.WriteLine(textBox2.Text);//h当前数据中的数?/p>
swWriter.Flush();
}
else
{
MessageBox.Show("发送信息不能ؓI!","错误提示Q?);
}
}
// 清理所有正在用的资源?/p>
protected override void Dispose( bool disposing )
{
if ( tcpConnect )
{
swWriter.WriteLine ( "STOP" ) ; //发送控制码
swWriter.Flush (); //h当前数据中的数据
nsStream.Close (); //清除资源
swWriter.Close ();
}
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}