netlib non-blocking blocks

[[EMAIL PROTECTED]]

Hi,
I have got this code below from Jeff Loucks on how to set my connection to a 
nonblocking state.

Int16 SetSocketBlocking(NetSocketRef s, Boolean fBlocking)
        {
        // Blocking flag
        Int16 option = fBlocking ? 0 : 1;

        // Set socket blocking or nonBlocking
        return NetLibSocketOptionSet(
                        NetLibRefnum,
                        s,
                        netSocketOptLevelSocket,
                        netSocketOptSockNonBlocking,
                        &option,
                        sizeof(option),
                        NetLibTimeout,
                        &NetLibErrno
                        );
        }

but i dnt know why, when i used it in my code it still blocks, and the error 
would be errWouldBlock.
below is where i used the nonblocking funtion:


NetLibSocketBind (NetLibP->AppNetRefnum,
                NetLibP->MasterSocket,
                (NetSocketAddrType *)&NetLibP->MasterAddr,
                sizeof(NetLibP->MasterAddr),
                NetLibP->AppNetTimeout,
                &err);
if(err != 0) {
        StrPrintF(ErrorCode, "Error code: %x", err);
        FrmCustomAlert(AlertID, "NetLibSocketBind failed to open!", 
(Char*)ErrorCode, "");
        goto CloseMasterSocket;
}

err = SetSocketBlocking(NetLibP, MasterSocketType, false);
if(err != 0)
        goto CloseMasterSocket;

is there any error in my code?
thanks,

Emilio
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