| 发表于：2007-01-18 17:37:032楼 得分:0 |
#include <winsock2.h>
#include "windows.h "
#pragma comment（lib, "ws2_32 ")
struct linksockcli
{
//sockaddr_in addrfrom;
char ip[16]; //ip地址。
unsigned short int port; //远程主机端口
unsigned long int sendsize; //已发送字节数
unsigned long int recvsize; //已接收字节数
unsigned short int tcporudp; //通信方式
};
socket sockclient;//
bool iintsock（int verh=2,int verl=2); //加载winsock32 2.2版
int bindsocket（unsigned short int port); //绑定端口
int sendsrv（
/*socket sockclient,*/
dword ipaddress,//ip1
char *ipaddress2,//ip2默认
unsigned short int port, //端口
char *buf,//字符串
int len, //长度
int falg=2 //先择ip
);
dword winapi recvproc（lpvoid lpparameter); //接收数据
void sockcl（)
{
closesocket（sockclient);
wsacleanup（);
}
int winapi winmain（ hinstance hinstance, hinstance hprevinstance, lpstr lpcmdline, int ncmdshow)
{
if（iintsock（)==false)
{
if（iintsock（1,1)==false)
return 0;
}
int port=5257;
while（bindsocket（port)!=1&&port <65535)
{
port++;
}
handle hthread=createthread（null,0,recvproc,null,0,null);
::waitformultipleobjects（1,&hthread,true,infinite);
//////////////////////////////////////////////////////////////////////////////////////////////////
return 0;
}
bool iintsock（int verh,int verl)
{
word wversionrequested;
wsadata wsadata;
int err;
wversionrequested = makeword（ verh,verl );
err = wsastartup（ wversionrequested, &wsadata );
if （ err != 0 ) {
return false;
}
if （ lobyte（ wsadata.wversion ) !=verh ¦ ¦
hibyte（ wsadata.wversion ) != verl) {
wsacleanup（ );
return false;
}
return true;
}
int bindsocket（unsigned short int port)
{
sockclient=socket（af_inet,sock_dgram,0);
if（invalid_socket==sockclient)
{
return -1;
}
sockaddr_in addrsock;
addrsock.sin_family=af_inet;
addrsock.sin_port=htons（port);
addrsock.sin_addr.s_un.s_addr=htonl（inaddr_any);
int retval;
retval=bind（sockclient,（sockaddr*)&addrsock,sizeof（sockaddr));
if（socket_error==retval)
{
closesocket（sockclient);
return 0;
}
return 1;
}
int sendsrv（/*socket sockclient,*/dword ipaddress,char *ipaddress2,unsigned short int port,char *buf,int len,int falg)
{
sockaddr_in addrsrv;
addrsrv.sin_family=af_inet;
if（falg==2)
{
addrsrv.sin_addr.s_un.s_addr=inet_addr（ipaddress2);
}
else
{addrsrv.sin_addr.s_un.s_addr=htonl（ipaddress);
}
addrsrv.sin_port=htons（port);
return （sendto（sockclient,buf,（int)（len+1),0,（sockaddr*)&addrsrv,sizeof（sockaddr)));
}
dword winapi recvproc（lpvoid lpparameter)
{
sockaddr_in addrfrom;
int len=sizeof（sockaddr);
char recvbuf[1024];
int retval;
while（true)
{
retval=recvfrom（sockclient,recvbuf,1024,0,（sockaddr*)&addrfrom,&len);
if（socket_error==retval)
break;
}
return 0;
} | | |
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