tse transmission get hanged in TCP protocal

The laptop client is written under VC++ 6.0.

# include <Winsock2.h>
# include <stdio.h>
void main()
{
	WORD wVersionRequested;
	WSADATA wsaData;
	int err;
	fd_set rfd,wfd; 
	struct timeval timeout;
	
	wVersionRequested = MAKEWORD( 1, 1 );
	
	err = WSAStartup( wVersionRequested, &wsaData );
	if ( err != 0 ) {
		return;
	}
	
	if ( LOBYTE( wsaData.wVersion ) != 1 ||
        HIBYTE( wsaData.wVersion ) != 1 ) {
		WSACleanup( );
		return; 
	}
	char recvBuf;
	memset(recvBuf,0,100);
	char sendbuf;
	memset(recvBuf,0,100);
	
	SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);
	
	SOCKADDR_IN addrSrv;
	addrSrv.sin_addr.S_un.S_addr=inet_addr("169.254.228.120");
	addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(30);
	
	connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
	
	recv(sockClient,recvBuf,100,0);
	printf("%s\n\n",recvBuf);
	
	int cnt=0;
	while(1){		
		cnt++;
		send(sockClient,"1",2,0);
		printf("1 sent OK!\n\n");
		
		//Sleep(100);
		recv(sockClient,recvBuf,2,0);
		printf("%s\nrecieved OK!\ncnt=%d\n\n",recvBuf,cnt);
	}
	closesocket(sockClient);
	WSACleanup();
}