神马文学网编写的Socket udp通信程序
来源：百度文库 编辑：神马文学网 时间：2024/04/19 13:29:22
UDP的服务器端:(UdpSrv.cpp)
#include "Winsock2.h"#include "stdio.h" #pragma comment(lib,"wsock32.lib")//导入lib
void main()
{
//初始化socket库
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 )
{
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(4000) ;
bind( sockSrv , (SOCKADDR*)&addrSrv , sizeof(SOCKADDR) ) ;
char sendBuf[100] ;
char recvBuf[100] ;
char tempBuf[200] ;
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() ;
}
UDP的客户端:(UdpClient.cpp)
#include "stdio.h"
#pragma comment(lib,"wsock32.lib")//导入lib
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 )
{
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(4000) ;
char sendBuf[100] ;
char recvBuf[100] ;
char tempBuf[200] ;
int len = sizeof(SOCKADDR) ;
while (1)
{
printf("Please input data:\n");
gets( sendBuf ) ;
sendto( sockClient , sendBuf , strlen(sendBuf) , 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!") ;
break ;
}
sprintf( tempBuf , "%s say: %s\n" , inet_ntoa(addrSrv.sin_addr) , recvBuf ) ;
printf( tempBuf ) ;
}
closesocket(sockClient) ;
WSACleanup() ;
}