VC++之网络编程五 聊天编程实例(UDP)

转自http://blog.csdn.net/thinkscape/article/details/4037483

Server:

#include <Winsock2.h>#include <stdio.h>void main(){//mide delete wordWORD 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:

#include <Winsock2.h>#include <stdio.h>void main(){//mide delete wordWORD 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);sendto(sockClient,"Hello",strlen("Hello")+1,0,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));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"