Windows网络编程课程设计

1、目录1 设计目的及意义 22 简单的需求分析 23 系统总体设计 .24 系统功能模块及关键代码 .35 调试与测试 .126 设计体会 .141.设计目的及意义。本局域网消息广播系统的设计开发，目的主要是为一个局域网中的服务器向所有主机发送消息，目前公司中一般都有比较多的电脑，假如一台管理员的电脑想向所有的其它员工电脑发送消息的话，如果通过每次只向一个员工电脑发送消息的话，那就要发送很多次了，这样就浪费有很多时间，本系统就是基于一个这样的目的才开发的，只要管理员电脑运行本系统服务器程序，员工电脑运行客户端程序，只要管理员在电脑里输入一次要发送给员工的信息，所有的员工都能马上收到发来的信息，本

2、系统的意义在于为企业，公司等有多台电脑管理的部门提供了方便，不必重复输入相同信息，也不必多次发送相同内容，节约了大量的时间。2.简单的需求分析。 目前很多公司，企业及学校等等一般都有比较多的电脑，员工工作时，部门经理也经常会与员工交流工作中的一些问题，也会向员工发布一些通知，如果向每台员工电脑都发送一次相同的信息，就会多次重复的输入，重复发送，这样就会降低工作效率，从而本局域网消息广播系统的应用还是比较大的，基本上目前每个公司，企业和学校都会使用与本系统相关的系统来提高工作效率。3.系统的总体设计。本系统流程图为：局域网消息广播服务器端用户端设置端口发送消息清除消息关闭连接服务器断开连接4.系

3、统功能模块及关键代码首先服务器端程序运行后，就会弹出“端口设置对话框”，提示输入服务器端的端口号，这个功能是由CPortSetDlg对话框类实现的，通过继承windows类实现，主要代码如下：class CPortSetDlg : public CDialog/ Constructionpublic:CPortSetDlg(CWnd* pParent = NULL); / standard constructor/ Dialog Data/AFX_DATA(CPortSetDlg)enum IDD = IDD_DIALOG1 ;UINTm_PortSet;/AFX_DATA/ Override

4、s/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CPortSetDlg)protected:virtual void DoDataExchange(CDataExchange* pDX); / DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:/ Generated message map functions/AFX_MSG(CPortSetDlg)/ NOTE: the ClassWizard will add member functions here/A

5、FX_MSGDECLARE_MESSAGE_MAP();服务器端口设置好后，系统就会自动弹出一个对话框提示“服务器端口设置ok!”，点“确定”后，就会进入服务器端主界面。主界面主要有有个输入框，及4个功能模块：（1）设置端口功能模块，主要是用于设置服务器端口号，主要代码如下：void CBCServerDlg:OnPortSet() / TODO: Add your control notification handler code here CPortSetDlg dlg;if(dlg.DoModal()=IDOK)m_pSocket=new CListenSocket;if(m_pSock

6、et->Create(dlg.m_PortSet)if(!m_pSocket->Listen()MessageBox("服务器端口设置错误！","服务器端口设置");elseMessageBox("服务器端口设置ok！","服务器端口设置");(2)发送消息功能模块主要代码：void CBCServerDlg:OnOK() / TODO: Add extra validation here if(!m_SocketList.IsEmpty() UpdateData();POSITION pos;CCli

7、entSocket * pSocket =(CClientSocket *) m_SocketList.GetHead();for(pos=m_SocketList.GetHeadPosition();pos!=NULL;)pSocket=(CClientSocket * )m_SocketList.GetNext(pos);pSocket->Send(LPCTSTR(m_OutInfo),m_OutInfo.GetLength();else MessageBox("不能建立服务器连接，不能广播信息","错误提示对话框");/CDialog:OnO

8、K();(3) 清除消息功能模块主要代码：void CBCServerDlg:OnClearOut() / TODO: Add your control notification handler code here m_OutInfo.Empty();UpdateData(false);(4) 关闭服务器功能模块主要代码：void CBCServerDlg:OnCancel() / TODO: Add extra cleanup here if(m_pSocket) delete m_pSocket; m_SocketList.RemoveAll(); CDialog:OnCancel();C

9、Dialog:OnCancel();其中有个与用户连接是否成功的判断提示代码为：void CBCServerDlg:OnOK() / TODO: Add extra validation here if(!m_SocketList.IsEmpty() UpdateData();POSITION pos;CClientSocket * pSocket =(CClientSocket *) m_SocketList.GetHead();for(pos=m_SocketList.GetHeadPosition();pos!=NULL;)pSocket=(CClientSocket * )m_Sock

10、etList.GetNext(pos);pSocket->Send(LPCTSTR(m_OutInfo),m_OutInfo.GetLength();else MessageBox("不能建立服务器连接，不能广播信息","错误提示对话框");/CDialog:OnOK();void CClientSocket:OnReceive(int nErrorCode) / TODO: Add your specialized code here and/or call the base class(CBCServerDlg *)(AfxGetApp()-&

11、gt;m_pMainWnd)->GetSocketMsg(this);CSocket:OnReceive(nErrorCode);class CBCServerDlg : public CDialog/ Constructionpublic:CBCServerDlg(CWnd* pParent = NULL);/ standard constructor void GetSocketMsg(CClientSocket * pSocket);CPtrList m_SocketList;CListenSocket * m_pSocket;/ Dialog Data/AFX_DATA(CBCS

12、erverDlg)enum IDD = IDD_BCServer_DIALOG ;CStringm_OutInfo;/AFX_DATA/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CBCServerDlg)protected:virtual void DoDataExchange(CDataExchange* pDX);/ DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:HICON m_hIcon;/ Generated message map functi

13、ons/AFX_MSG(CBCServerDlg)virtual BOOL OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();afx_msg void OnPortSet();/afx_msg void OnClearIn();afx_msg void OnClearOut();virtual void OnCancel();virtual void OnOK();/AFX_MSGDECLARE_ME

14、SSAGE_MAP();程序运行开始时，先初始化服务器端程序主要代码是：BOOL CBCServerDlg:OnInitDialog()CDialog:OnInitDialog();/ Add "About." menu item to system menu./ IDM_ABOUTBOX must be in the system command range.ASSERT(IDM_ABOUTBOX & 0xFFF0) = IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSyst

15、emMenu(FALSE);if (pSysMenu != NULL)CString strAboutMenu;strAboutMenu.LoadString(IDS_ABOUTBOX);if (!strAboutMenu.IsEmpty()pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);/ Set the icon for this dialog. The framework does this automatically/ when th

16、e application's main window is not a dialogSetIcon(m_hIcon, TRUE);/ Set big iconSetIcon(m_hIcon, FALSE);/ Set small icon/ TODO: Add extra initialization here OnPortSet();return TRUE; / return TRUE unless you set the focus to a controlvoid CBCServerDlg:OnSysCommand(UINT nID, LPARAM lParam)if (nID

17、 & 0xFFF0) = IDM_ABOUTBOX)CAboutDlg dlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID, lParam);class CClientUseSocket : public CSocket/ Attributespublic:/ Operationspublic:CClientUseSocket();virtual CClientUseSocket();/ Overridespublic:/ ClassWizard generated virtual function overrides/AF

18、X_VIRTUAL(CClientUseSocket)public:virtual void OnReceive(int nErrorCode);/AFX_VIRTUAL/ Generated message map functions/AFX_MSG(CClientUseSocket)/ NOTE - the ClassWizard will add and remove member functions here./AFX_MSG/ Implementationprotected:;用户端程序主要有2个功能模块。(1) 连接服务器，点击后，会弹出一个输入服务器IP地址，和服务器端号。主要代

19、码为：void CUseSocketDlg:OnConnect() / TODO: Add your control notification handler code hereCConnectDlg dlg;if(dlg.DoModal()=IDOK) m_ServerName=dlg.m_ServerName; m_PortAddress=dlg.m_PortAddress; m_pSocket=new CClientUseSocket(); if(!(ConnectServer(m_pSocket) m_pSocket=NULL; return; else MessageBox(&quo

20、t;Socket连接成功！","user program"); void CUseSocketDlg:OnDisconnect() / TODO: Add your control notification handler code hereif(m_pSocket)delete m_pSocket;m_pSocket=NULL;MessageBox("Socket连接已经断开","提示");else MessageBox("当前未连接到任何服务器！","提示");void CUseS

21、ocketDlg:OnConceal() / TODO: Add your control notification handler code hereif(m_pSocket)delete m_pSocket;CDialog:OnCancel();class CUseSocketApp : public CWinApppublic:CUseSocketApp();/ Overrides/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CUseSocketApp)public:virtual BOOL InitInst

22、ance();/AFX_VIRTUAL/ Implementation/AFX_MSG(CUseSocketApp)/ NOTE - the ClassWizard will add and remove member functions here./ DO NOT EDIT what you see in these blocks of generated code !/AFX_MSGDECLARE_MESSAGE_MAP();void CUseSocketDlg:GetSocketMsg(CClientUseSocket * pSocket) BOOL MsgEnd=false;CStri

23、ng Msg="收到服务器消息："char MsgBuf100;int bufsize=100;dostrcpy(MsgBuf,"");int left=pSocket->Receive(MsgBuf,bufsize);if(left<100&&left>0)MsgEnd=true;MsgBufleft=0;Msg+=MsgBuf;while(!MsgEnd);MessageBox(Msg,"user program");BOOL CUseSocketDlg:ConnectServer(CClient

24、UseSocket * pSocket)if(!(pSocket->Create()delete pSocket;pSocket=NULL;MessageBox("socket创建不成功","提示");return false;if(!(pSocket->Connect(m_ServerName,m_PortAddress)delete pSocket;pSocket=NULL;MessageBox("服务器连接失败","提示");return false;return true;(2) 用户端程序另一

25、个功能模块是断开连接，主要代码是：void CUseSocketDlg:OnDisconnect() / TODO: Add your control notification handler code hereif(m_pSocket)delete m_pSocket;m_pSocket=NULL;MessageBox("Socket连接已经断开","提示");else MessageBox("当前未连接到任何服务器！","提示");class CConnectDlg : public CDialog/ Cons

26、tructionpublic:CConnectDlg(CWnd* pParent = NULL); / standard constructor/ Dialog Data/AFX_DATA(CConnectDlg)enum IDD = IDD_DIALOG1 ;UINTm_PortAddress;CStringm_ServerName;/AFX_DATA/ Overrides/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CConnectDlg)protected:virtual void DoDataExchange(CDataExchange* pD