学步园

ServerFrm.cs/**********TcpListener和TcpClient研究**********<br /> * 要点一:TcpListener起动后,如果有客户请求,就会建立一个TcpClient连接.<br /> * 要点二:通过TcpClient取得NetworkStream对象<br /> * 要点三:通过NetworkStream的Write和Read方法向连接的另一端发或接收数据<br /> * 要点四:传输的数据只能是字符流,需要编码.<br /> **********************************************/<br /> using System;<br /> using System.Collections.Generic;<br /> using System.ComponentModel;<br /> using System.Data;<br /> using System.Drawing;<br /> using System.Text;<br /> using System.Windows.Forms;</p> <p>using System.Net;<br /> using System.Net.Sockets;<br /> using System.Threading;</p> <p>namespace WinNet<br /> {<br /> public partial class ServerFrm : Form<br /> {<br /> private Thread processor;<br /> private TcpListener tcpListener;<br /> string clientStr;<br /> public ServerFrm()<br /> {<br /> InitializeComponent();<br /> }</p> <p> private void ServerFrm_Load(object sender, EventArgs e)<br /> {<br /> //需要在新的线程里监听客户端<br /> processor = new Thread(new ThreadStart(StartListening));<br /> processor.Start();<br /> }<br /> private void StartListening()<br /> {<br /> //创建一个监听对象<br /> tcpListener = new TcpListener(IPAddress.Any, 8888);<br /> tcpListener.Start();<br /> //循环监听<br /> while (true)<br /> {<br /> try<br /> {<br /> //取得客户端的连接<br /> TcpClient tcpClient = tcpListener.AcceptTcpClient();<br /> //取得客户端发过来的字节流<br /> NetworkStream clientStream = tcpClient.GetStream();<br /> //把字节流读入字节数组<br /> byte[] buffer = new byte[10];<br /> clientStream.Read(buffer, 0, 10);<br /> //不可以在此直接设置this.Text,线程问题.<br /> clientStr= System.Text.Encoding.ASCII.GetString(buffer);<br /> //向客户端发送数据<br /> buffer = System.Text.Encoding.ASCII.GetBytes("helloclint".ToCharArray());<br /> clientStream.Write(buffer, 0, 10);<br /> //把字节流转化为字符串<br /> this.Text = clientStr;</p> <p> tcpClient.Close();<br /> clientStream.Close();<br /> }<br /> catch<br /> {<br /> }<br /> }<br /> }<br /> }<br /> } ClientFrm.csusing System;<br /> using System.Collections.Generic;<br /> using System.ComponentModel;<br /> using System.Data;<br /> using System.Drawing;<br /> using System.Text;<br /> using System.Windows.Forms;</p> <p>using System.Net;<br /> using System.Net.Sockets;</p> <p>namespace WinNet<br /> {<br /> public partial class ClientFrm : Form<br /> {<br /> public ClientFrm()<br /> {<br /> InitializeComponent();<br /> }</p> <p> private void ClientFrm_Load(object sender, EventArgs e)<br /> {<br /> //这就是服务器与客户端的一条通讯线路<br /> TcpClient tcpClient = new TcpClient();<br /> //得到服务器端IP,然后建立一个连接<br /> IPHostEntry host = Dns.GetHostEntry("127.0.0.1");<br /> tcpClient.Connect(host.AddressList[0], 8888);<br /> //取得数据流<br /> NetworkStream clientStream = tcpClient.GetStream();<br /> //只能向服务器发送字节流,所以要编码<br /> byte[] response = new byte[10];<br /> response = System.Text.Encoding.ASCII.GetBytes("helloserve".ToCharArray());<br /> //通过Write方法把客户端数据发向服务器<br /> clientStream.Write(response, 0, 10);<br /> //通过Read方法读取服务器端发过来的数据<br /> clientStream.Read(response, 0, 10);<br /> this.Text = System.Text.Encoding.ASCII.GetString(response);</p> <p> tcpClient.Close();<br /> clientStream.Close();<br /> }<br /> }<br /> }