Hi Przemek,
Thanks for your suggestion!
> someone can confirm that SOL_SOCKET->SO_RCVTIMEO uses 'int' as parameter
> in MS-Windows.
There is the following definition in the header file winsock.h from BCC:
int PASCAL FAR setsockopt (
IN SOCKET s,
IN int level,
IN int optname,
IN const char FAR * optval,
IN int optlen);
--
Kind Regards,
Grigory Filatov
Przemyslaw Czerpak-2 wrote:
>
> On Thu, 08 Oct 2009, Mitja Podgornik wrote:
>> Hi, please, can anybody help?
>> This function occasional causes GPF
>> and occurs sporadic only on some xp/vista machines
>> > >> Application Internal Error ...
>> > >> Terminated at: ....
>> > >> Info: Harbour MiniGUI 1.7 Extended Edition (Build 74) - 2009.09.30
>> > >> Unrecoverable error 9023: hb_xgrab requested to allocate zero bytes
>> > >> Called from SOCKETRECEIVE(0)
>
> recv() on error returns -1 not 0.
>
>> nLen = recv( m_hSocket, pRead, nLen, 0 );
>> hb_storclen( pRead, nLen, 2 );
> ^^^^
> And in such case error appears here.
> As short hackt o resolve the problem you can add hust after recv()
> if( nLen < 0 ) nLen = 0;
> This function can be also greatly optimized though it's maybe less
> important. Anyhow I suggest to convert this code to use internally
> hb_socket*() functions. This functions can create some other problems
> changing socket options, i.e. as parameter for SOL_SOCKET->SO_RCVTIMEO
> struct timeval (the same as in select()) should be used but this code
> uses integer. I've never used it on Windows so it's possible it's a
> bug in MS-Windows BSD socket implementation and it really needs int
> value but I suggest to verify it. Please also note that it changes
> socket parameters and then does not restore them so next calls will
> use timeouts setting set by previous calls. Of course if they work
> and someone can confirm that SOL_SOCKET->SO_RCVTIMEO uses 'int' as
> parameter in MS-Windows.
>
> best regards,
> Przemek
>
>
--
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