At 11:49 10/02/99 -0500, Jeff Dubrule wrote:
>On Wed, Feb 10, 1999 at 02:35:03PM -0000, Carl Burnside wrote:
>> Is it possible to use SSL communications calls in a non-blocking
fashion? I
>> am trying to implement SSL on a VMS environment that currently uses a
lot of
>> asynchronous QIO calls. It appears that the existing SSL library consists
>> of socket style synchronous calls - or am I failing to understand it all.
>> Any pointers welcomed :-)
>
> fcntl(fd, F_SETFL, O_NONBLOCK);
>
>This means that your reads & writes will return instantly.
>
>select() can also be used to determine how much stuff is waiting in a
>socket.
>
Does this account for any data buffered in the SSL session ?
I think ran foul of this on an initial attempt to get SSL to timeout a client
response; but have not pursued it any further yet.
When I enable select(timeout) the connections usually hang, and it appears
that there is some read-ahead into a buffer (in 'SSL' struct), which the
select() is unaware of.
Can anybody shed some light on this ?
Is there an 'official' way to check for buffered read-ahead data,
before making a call to select() ?
regards
Moray
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Moray Goodwin phone : +44-1442-403600
Chief Engineer fax : +44-1442-231178
Jyra Research Inc., email : [EMAIL PROTECTED]
111 Hamilton House, web : www.jyra.com
Marlowes, Hemel Hempstead
Herts, HP1 1BB Cisco CCIE : No.1593
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