VC++之网络编程五 聊天编程实例

server:

//NetSrv.cpp

#include <Winsock2.h>
#include <stdio.h>
void main(){
//mide delete word
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested=MAKEWORD(2,2);
err=WSAStartup(wVersionRequested,&wsaData);
if(err!=0){
return;
}
if(LOBYTE(wsaData.wVersion)!=2 || HIBYTE(wsaData.wHighVersion)!=2)
{
WSACleanup();
return ;
}

SOCKET sockSrv=socket(AF_INET,SOCK_DGRAM,0);

SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);

bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

char recvBuf[100];
char sendBuf[100];
char tempBuf[100];

SOCKADDR_IN addrClient;
int len=sizeof(SOCKADDR);

while(1)
{
recvfrom(sockSrv,recvBuf,100,0,(SOCKADDR*)&addrClient,&len);
if('q'==recvBuf[0])
{
sendto(sockSrv,"q",strlen("q")+1,0,(SOCKADDR*)&addrClient,len);
printf("chat end!/n");
break;
}

sprintf(tempBuf,"%s say: %s",inet_ntoa(addrClient.sin_addr),recvBuf);
printf("%s/n",tempBuf);
printf("Please input data:/n");
gets(sendBuf);
sendto(sockSrv,sendBuf,strlen(sendBuf)+1,0,(SOCKADDR*)&addrClient,len);

}
closesocket(sockSrv);
WSACleanup();
}

client:

//NetClient.cpp

#include <Winsock2.h>
#include <stdio.h>
void main(){
//mide delete word
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested=MAKEWORD(2,2);
err=WSAStartup(wVersionRequested,&wsaData);
if(err!=0){
return;
}
if(LOBYTE(wsaData.wVersion)!=2 || HIBYTE(wsaData.wHighVersion)!=2)
{
WSACleanup();
return ;
}

SOCKET sockClient=socket(AF_INET,SOCK_DGRAM,0);

SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);

char recvBuf[100];
char sendBuf[100];
char tempBuf[100];

int len=sizeof(SOCKADDR);

while(1)
{
printf("Please input data:/n");
gets(sendBuf);
sendto(sockClient,sendBuf,strlen(sendBuf)+1,0,(SOCKADDR*)&addrSrv,len);
recvfrom(sockClient,recvBuf,100,0,(SOCKADDR*)&addrSrv,&len);
if('q'==recvBuf[0])
{
sendto(sockClient,"q",strlen("q")+1,0,(SOCKADDR*)&addrSrv,len);
printf("chat end!/n");
break;
}

sprintf(tempBuf,"%s say: %s",inet_ntoa(addrSrv.sin_addr),recvBuf);
printf("%s/n",tempBuf);
}
closesocket(sockClient);
WSACleanup();
}

注意：

server 和 client 都要"项目属性"--->"配置属性"----> "链接"----> "输入" --->"附加依赖项"中添加"ws2_32.lib"