网络编程(www.cppentry.com)已经成为一种时髦，以TCP/IP协议的网络更为流行.自己编一个服务器与客户机互相传送消息的程序,以便增加自己网络编程(www.cppentry.com)的经验.下面我就介绍一下我编的程序.
首先介绍服务器程序：
1.创建一个名为"server"的项目,单文档界面.
2.在serverview.h中加入代码：
添加变量：
CSize sizeTotal;//控制滚动条
int count;//信息条数
CString m_data[1000];//信息存放
char Hostname[260];
char Hostaddress[20];//主机IP地址
SOCKET m_sock;
HANDLE m_hListenThread;//线程
BOOL m_bInitialized;//是否初始化
WSADATA WSAData;
BOOL flag;
SOCKADDR_IN saClnt;
int saClntLen;
BOOL Isconnect;//是否连接 |
3.在serverview.cpp中重载CServerView()构造器,创建并绑定嵌套字：
CServerView::CServerView()
{ // TODO: add construction code here
Isconnect=FALSE;
flag=FALSE;
sizeTotal.cy=350;
sizeTotal.cx=300;
m_hListenThread;
count=5;
int status;
WSADATA wsaData;
m_data[0]="initializing Windows Sockets DLL....";
if((status=WSAStartup(0x0101,&wsaData))==0)
{ m_data[0]+="Succeeded";
m_bInitialized=TRUE;
}
else
{ m_bInitialized=FALSE;
}
m_sock=socket(AF_INET,SOCK_DGRAM,0);
m_data[1]="Creating socket....";
if(m_sock==INVALID_SOCKET)
{ m_data[1]+="Failed";
}
m_data[1]+="Succeeded";
m_data[2]="Binding socket....";
sockaddr_in sa;
sa.sin_family=AF_INET;
sa.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
sa.sin_port=htons(5050);
if(bind(m_sock,(PSOCKADDR)&sa,
sizeof(sa))==SOCKET_ERROR)
{ m_data[2]+="Failed";
closesocket(m_sock);
}
m_data[2]+="Succeeded";
m_data[3]="Creating listener thread....";
unsigned long idThread;
m_hListenThread=CreateThread(NULL,0,
(LPTHREAD_START_ROUTINE)Listen,
(void *)this,0,&idThread);
if(m_hListenThread)
{ m_data[3]+="Succeeded";
m_data[4]+="Listening....";
}
else
m_data[4]+="Failed";
} |
4.在析构函数中完成必需的清除操作:
CServerView::~CServerView()
{ if(m_bInitialized)
WSACleanup();
closesocket(m_sock);
if(m_hListenThread)
::TerminateThread(m_hListenThread,0);
} |
5.定义接收和处理消息的线程:
long WINAPI Listen(CServerView *pView)
{ char msg[2000]="";
int nchar;
SOCKADDR_IN saClnt;
int saClntLen;
while(1)
{ saClntLen=sizeof(saClnt);
nchar=recvfrom(pView- ＞m_sock,msg,
1024,0,(PSOCKADDR)&saClnt,&saClntLen);
if(nchar< 0)
{ pView- ＞m_data[pView- ＞count++]+
="Error in recvfrom
";
pView- ＞InvalidateRect(NULL);
}
else
{
switch(msg[0])
{
case ’A’:
wsprintf(msg,"A:Client from %s attached
",
inet_ntoa(saClnt.sin_addr));
pView- ＞m_data[pView- ＞count++]=msg;
pView- ＞flag=TRUE;
pView- ＞InvalidateRect(NULL);
pView- ＞Isconnect=TRUE;
pView- ＞saClnt=saClnt;
pView- ＞saClntLen=saClntLen;
sendto(pView- ＞m_sock,msg,1024,0,
(PSOCKADDR)&saClnt,saClntLen);
break;
case ’D’:
wsprintf(msg,"D: Client form %s detached
",
inet_ntoa(saClnt.sin_addr));
pView- ＞m_data[pView- ＞count++]=msg;
pView- ＞flag=TRUE;
pView- ＞InvalidateRect(NULL);
pView- ＞Isconnect=FALSE;
sendto(pView- ＞m_sock,msg,1024,0,
(PSOCKADDR)&saClnt,saClntLen);
break;
case ’R’:
saClntLen=sizeof(saClnt);
pView- ＞m_data[pView-＞count++]=msg;
pView- ＞flag=TRUE;
pView- ＞InvalidateRect(NULL);
break;
default:
break;
}
}
}
return(0);
} |
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