Port description code

Int main ()
{
Wsadata wsdata;
Socket sock = invalid_socket;
Struct sockaddr_in ADDR;

Char IP [16] = {0 };
U_short prot = 16999;
Char data [2048] = {0 };

Int NREL = 0;
Int Index = 0;

U_long mode = 1;
Struct timeval timeout;

Timeout. TV _sec = 0;
Timeout. TV _usec = 10000*6;

Fd_set W;
Fd_set R;

NREL = wsastartup (makeword (2, 2), & wsdata );
If (0! = NREL)
{
Log ("wsastartup failed! \ N ");
Getchar ();
Return 0;
}
Else
{
Log ("wsastartup successful! \ N ");
}

For (Index = 0; index <255; index ++)
{
Sprintf (IP, "192.168.1.% d", index );

Sock = socket (af_inet, sock_stream, ipproto_tcp );
If (sock! = Invalid_socket)
{
Outputdebugstring ("socket create successful! \ N ");
}

NREL = ioctlsocket (sock, fionbio, & mode );
If (NREL = socket_error)
{
Log ("ioctlsocket failed! \ N ");
}

Fd_zero (& W );
Fd_set (sock, & W );
Fd_zero (& R );
Fd_set (sock, & R );

ADDR. sin_family = af_inet;
ADDR. sin_port = htons (prot );
ADDR. sin_addr.s_addr = inet_addr (IP );

NREL = connect (sock, (sockaddr *) (& ADDR), sizeof (ADDR ));

NREL = select (0, 0, & W, 0, & timeout );
If (NREL = socket_error) | (NREL = 0 ))
{
Printf ("Connect Host: % s: % d failed! \ N ", IP, Prot );
Closesocket (sock );
}
Else
{
Printf ("------------------------------------ Connect Host: % s: % d successful! \ N ", IP, Prot );
Select (0, & R, 0, 0, & timeout );
NREL = Recv (sock, Data, sizeof (data), 0 );
If (socket_error = NREL)
{
Printf ("Data Recv failed! \ N ");
}
Else
{
Printf ("------------------------------------ Recv data: % s \ n", data );
Closesocket (sock );
}
}
}

Closesocket (sock );
Wsacleanup ();

Getchar ();
Return 0;
}