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#include <Winsock2.h>
#include <stdio.h>
void InitSocket()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 2, 2 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
return;
}
/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */
if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup( );
return;
}
}
int main(int argc, char* argv[])
{
InitSocket();
SOCKET sock=::socket(AF_INET,SOCK_STREAM,0);
if(sock==INVALID_SOCKET)
{
printf("创建socket失败");
WSACleanup( );
return 0;
}
//::sockaddr_in serAddr;
SOCKADDR_IN serAddr;
serAddr.sin_family=AF_INET;
serAddr.sin_port=::htons(5150);
serAddr.sin_addr.s_addr = htonl(INADDR_ANY);
if(SOCKET_ERROR==bind(sock,(sockaddr*)&serAddr,sizeof(sockaddr)))
{
printf("绑定失败");
WSACleanup( );
return 0;
}
listen(sock,5);
fd_set fdSocket;
FD_ZERO(&fdSocket);
FD_SET(sock,&fdSocket);
while(true)
{
fd_set fdRead=fdSocket;
int nRet=::select(0,&fdRead,NULL,NULL,NULL);
if(nRet>0)
{
for(int i=0;i<(int)fdSocket.fd_count;i++)
{
if(FD_ISSET(fdSocket.fd_array[i],&fdRead))
{
//有新的连接到达
if(fdSocket.fd_array[i]==sock)
{
if(fdSocket.fd_count<FD_SETSIZE)
{
::sockaddr_in addr;
int len=sizeof(sockaddr);
SOCKET client=accept(sock,(sockaddr*)&addr,&len);
printf("接收到新的连接 : %s/n
/ API fails. We have to report the return status of the function.
printf("WSAStartup failed with error %d/n下载本文
