C下如何實現(xiàn)服務器 客戶端的聊天程序

1、最近也在接觸SOCKET編程，在當今這樣一個網絡時代，很多技術都以網絡為中心在誕生，至少我認為是這樣的，而SOCKET套接字接口，在實現(xiàn)網絡通訊上處于關鍵地位，所以不會SOCKET是不行的。首先，本文主要是針對那些剛接觸SOCKET編程的朋友，如果是高手，就可以不看此文啦，可以去陪陪老婆，比如逛街或看電視.在開始之前，我們需要預習一些基礎知識：什么是SOCKET套接字？SOCKET通常有那幾種數(shù)據(jù)格式？線程的概念？（以上基本知識我就不講了，網上這方面資料很多的，大家找資料看下吧）我要介紹的是一個服務器端+客戶端的聊天系統(tǒng)，程序比較簡單，我先把程序運行的界面給大家看下：上面是服務器端運行界面；下

2、面把客戶端界面貼給大家看下：功能比較簡單，服務器的端口號可以在“系統(tǒng)菜單”里面的參數(shù)配置進行修改的?？戳松厦娴膱D，下面我們就給大家把代碼貼出來：（因為程序比較簡單，所以本人就沒有去分層啦）服務器端代碼：1usingSystem;2usingSystem.Collections.Generic;3usingSystem.ComponentModel;4usingSystem.Data;5usingSystem.Drawing;6usingSystem.Text;7usingSystem.Windows.Forms;89usingSystem.Net;10usingSystem.Net.Socke

3、ts;11usingSystem.Threading;12usingSystem.Xml;1314namespaceServer1516publicpartialclassServerMain:Form1718publicServerMain()1920InitializeComponent();212223privatevoidServerMain_Load(objectsender,EventArgse)2425this.CmdStar.Enabled=true;26this.CmdStop.Enabled=false;272829privatevoid配置參數(shù)ToolStripMenuI

4、tem_Click(objectsender,EventArgse)3031SetTSet=newSet();32TSet.ShowDialog();333435privatevoid關于ToolStripMenuItem_Click(objectsender,EventArgse)3637AboutTAbout=newAbout();38TAbout.Show();3940/41/獲得XML文件中的端口號42/43/44privateintGetPort()4546try4748XmlDocumentTDoc=newXmlDocument();49TDoc.Load(Settings.xml

5、);50stringTPort=TDoc.GetElementsByTagName(ServerPort)0.InnerXml;51returnConvert.ToInt32(TPort);525354catchreturn6600;/默認是6600555657/聲明將要用到的類58privateIPEndPointServerInfo;/存放服務器的IP和端口信息59privateSocketServerSocket;/服務端運行的SOCKET60privateThreadServerThread;/服務端運行的線程61privateSocketClientSocket;/為客戶端建立的SO

6、CKET連接62privateintClientNumb;/存放客戶端數(shù)量63privatebyteMsgBuffer;/存放消息數(shù)據(jù)6465privatevoidCmdStar_Click(objectsender,EventArgse)6667ServerSocket=newSocket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);68ServerInfo=newIPEndPoint(IPAddress.Any,this.GetPort();69ServerSocket.Bind(ServerInfo);/將

7、SOCKET接口和IP端口綁定70ServerSocket.Listen(10);/開始監(jiān)聽，并且掛起數(shù)為107172ClientSocket=newSocket65535;/為客戶端提供連接個數(shù)73MsgBuffer=newbyte65535;/消息數(shù)據(jù)大小74ClientNumb=0;/數(shù)量從0開始統(tǒng)計7576ServerThread=newThread(RecieveAccept);/將接受客戶端連接的方法委托給線程77ServerThread.Start();/線程開始運行7879CheckForIllegalCrossThreadCalls=false;/不捕獲對錯誤線程的調用808

8、1this.CmdStar.Enabled=false;82this.CmdStop.Enabled=true;83this.StateMsg.Text=服務正在運行+運行端口：+this.GetPort().ToString();84this.ClientList.Items.Add(服務于+DateTime.Now.ToString()+開始運行.);858687/接受客戶端連接的方法88privatevoidRecieveAccept()8990while(true)9192ClientSocketClientNumb=ServerSocket.Accept();93ClientSock

9、etClientNumb.BeginReceive(MsgBuffer,0,MsgBuffer.Length,0,newAsyncCallback(RecieveCallBack),ClientSocketClientNumb);94this.ClientList.Items.Add(ClientSocketClientNumb.RemoteEndPoint.ToString()+成功連接服務器.);95ClientNumb+;96979899/回發(fā)數(shù)據(jù)給客戶端100privatevoidRecieveCallBack(IAsyncResultAR)101102try103104SocketR

10、Socket=(Socket)AR.AsyncState;105intREnd=RSocket.EndReceive(AR);106for(inti=0;iClientNumb;i+)107108if(ClientSocketi.Connected)109110ClientSocketi.Send(MsgBuffer,0,REnd,0);111112RSocket.BeginReceive(MsgBuffer,0,MsgBuffer.Length,0,newAsyncCallback(RecieveCallBack),RSocket);113114115116catch117118119120

11、privatevoidCmdStop_Click(objectsender,EventArgse)121122ServerThread.Abort();/線程終止123ServerSocket.Close();/關閉SOCKET124125this.CmdStar.Enabled=true;126this.CmdStop.Enabled=false;127this.StateMsg.Text=等待運行;128this.ClientList.Items.Add(服務于+DateTime.Now.ToString()+停止運行.);129130131132133134客戶端代碼：1usingSys

12、tem;2usingSystem.Collections.Generic;3usingSystem.ComponentModel;4usingSystem.Data;5usingSystem.Drawing;6usingSystem.Text;7usingSystem.Windows.Forms;89usingSystem.Net;10usingSystem.Net.Sockets;1112namespaceClient1314publicpartialclassClientMain:Form1516publicClientMain()1718InitializeComponent();192

13、021privateIPEndPointServerInfo;22privateSocketClientSocket;23privateByteMsgBuffer;24privateByteMsgSend;2526privatevoidClientMain_Load(objectsender,EventArgse)2728this.CmdSend.Enabled=false;29this.CmdExit.Enabled=false;3031ClientSocket=newSocket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolTy

14、pe.Tcp);32MsgBuffer=newByte65535;33MsgSend=newByte65535;34CheckForIllegalCrossThreadCalls=false;3536RandomTRand=newRandom();37this.UserName.Text=用戶+TRand.Next(10000).ToString();383940privatevoidCmdEnter_Click(objectsender,EventArgse)4142ServerInfo=newIPEndPoint(IPAddress.Parse(this.ServerIP.Text),Co

15、nvert.ToInt32(this.ServerPort.Text);4344try4546ClientSocket.Connect(ServerInfo);4748ClientSocket.Send(Encoding.Unicode.GetBytes(用戶：+this.UserName.Text+進入系統(tǒng)！n);4950ClientSocket.BeginReceive(MsgBuffer,0,MsgBuffer.Length,0,newAsyncCallback(ReceiveCallBack),null);5152this.SysMsg.Text+=登錄服務器成功！n;53this.C

16、mdSend.Enabled=true;54this.CmdEnter.Enabled=false;55this.CmdExit.Enabled=true;5657catch5859MessageBox.Show(登錄服務器失敗，請確認服務器是否正常工作！);60616263privatevoidReceiveCallBack(IAsyncResultAR)6465try6667intREnd=ClientSocket.EndReceive(AR);68this.RecieveMsg.AppendText(Encoding.Unicode.GetString(MsgBuffer,0,REnd)

17、;69ClientSocket.BeginReceive(MsgBuffer,0,MsgBuffer.Length,0,newAsyncCallback(ReceiveCallBack),null);707172catch7374MessageBox.Show(已經與服務器斷開連接！);75this.Close();7677787980privatevoidCmdSend_Click(objectsender,EventArgse)8182s(this.UserName.Text+說：n+this.SendMsg.Text+n);83if(ClientSocket.Connected)8485

18、ClientSocket.Send(MsgSend);86this.SendMsg.Text=;8788else8990MessageBox.Show(當前與服務器斷開連接，無法發(fā)送信息！);91929394privatevoidCmdExit_Click(objectsender,EventArgse)9596if(ClientSocket.Connected)9798ClientSocket.Send(Encoding.Unicode.GetBytes(this.UserName.Text+離開了房間！n);99ClientSocket.Shutdown(SocketShutdown.Both);100ClientSocket.Disconnect(false);101102ClientSocket.Close();103104this.CmdSend.Enabled=false;105this.CmdEnter.Enabled=true;106this