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#include <WinSock2.h>
#include <stdio.h>
#define PORT 8888
int main() //server
{
WSADATA wsaData;
int Ret = WSAStartup(MAKEWORD(2,2),&wsaData);
printf("Server!\n");
if(Ret != 0)
{
printf("无法初始化winsock.\n");
WSACleanup();
}
else{
// printf("初始化winsock成功\n");
}
if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 )
{
WSACleanup( );
return 1;
}
SOCKET socket=::socket(AF_INET,SOCK_DGRAM,IPPROTO_IP);
sockaddr_in addr;
addr.sin_addr.S_un.S_addr=INADDR_ANY;
addr.sin_family=AF_INET;
addr.sin_port=ntohs(PORT);
if(socket==INVALID_SOCKET)
{
printf("socket Error!");
}
int rs= bind(socket,(sockaddr*)&addr,sizeof(addr));
if (rs!=0)
{
printf("bind failed!");
return 1;
}
char buf[200]="\0";
char temp[200]="\0";
sockaddr_in addrcl;
int len=sizeof(sockaddr);
while(1){
recvfrom(socket,buf,sizeof(buf),0,(sockaddr*)&addrcl,&len);//用新建的地址结构保存客户端的信息
sprintf(temp,"%s:%s",inet_ntoa(addrcl.sin_addr),buf);
sendto(socket,temp,strlen(temp)+1,0,(sockaddr*)&addrcl,sizeof(addr));
if(strcmp(buf,"srvexit")==0)
{
break;
}
printf("%s",buf);
}
closesocket(socket);
WSACleanup();
printf("exit\n");
return 0;
}
#include <WinSock2.h>
#include <stdio.h>
#define PORT 8888
int main()
{
WSADATA wsaData;
int Ret = WSAStartup(MAKEWORD(2,2),&wsaData);
printf("Client..!\n");
if(Ret != 0)
{
printf("无法初始化winsock.\n");
WSACleanup();
}
else{
// printf("初始化winsock成功\n");
}
SOCKET socketc=::socket(AF_INET,SOCK_DGRAM,IPPROTO_IP);
sockaddr_in addr;
addr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
addr.sin_family=AF_INET;
addr.sin_port=ntohs(PORT);
if(socketc==INVALID_SOCKET)
{
printf("socket Error!");
}
int len=sizeof(sockaddr);
while (1)//client
{
char buf[200]="\0";
char rbuf[300]="\0";
printf("\n:");
scanf("%s",&buf);
sendto(socketc,buf,strlen(buf)+1,0,(SOCKADDR*)&addr,len);//用回原来的地址结构
recvfrom(socketc,rbuf,sizeof(rbuf),0,(SOCKADDR*)&addr,&len);
if(strcmp(rbuf,"exit")==0)
{
break;
}
printf("%s",rbuf);
}
closesocket(socketc);
WSACleanup();
printf("end\n");
return 0;
}
