Hi J.R.,
I think the problem is the possibly long delay between start and end of
DATA. If this delay is too long, Net::SSLeay is trying to make a new
SSL-handshake or key exchange. This modul needs a blocking connection to
do this. So i think the following (or similar) could work:
sub SMTPTraffic {
....
my $hasread;
my $blocking;
my $syserror;
if ("$fh" =~/SSL/i) { # if this is SSL
eval {
$blocking = $fh->blocking; # get the current blocking state
$fh->blocking(1); # set blocking on
local $SIG{ALRM} = sub { die "__alarm__\n" };
alarm(1); # define a 1 (or more) seconds alarm
$hasread = $fh->sysread($buf,4096); # try to read the data
$syserror = $!;
alarm(0); # reset the alarm
$fh->blocking($blocking); # set blocking to the state before
};
alarm(0); # reset the alarm in any case
if ( $@ =~ /^__alarm__$/ ) { # if we got the alarm - the
connection is broken -> done
done($fh);
return;
} elsif ($@) { # there could be an other error
eval{$fh->blocking($blocking);}; # set the blocking to state
before
}
} else { # no SSL - normal behavior
$hasread = $fh->sysread($buf,4096);
$syserror = $!;
}
if ( $hasread > 0 ) {
....
....
} elsif ($syserror =~ /Resource temporarily unavailable/i) { # this
is a normal error - we should try to repeat the read
d(55);
return;
} else {
d(5);
done($fh);
}
}
Currently we do not know, if the sysread or syswrite has no success in
SSL-connections. So anything similar in MainLoop and MainLoop2 for the
writing stuff should be done.
ASSP V1 uses IO::Select and if we get back from there a filehandle, we can
suppose that there a some data readable or writeable. In this normal case,
the switched on blocking should never fail (or block) - but if Net::SSLeay
needs to do some stuff under the cover, the connection has the right state
(blocking is 1).
Thomas
"J.R. Oldroyd" <[email protected]>
21.04.2009 10:34
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ASSP development mailing list <[email protected]>
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Re: [Assp-test] SSL/TLS
On Mon, 20 Apr 2009 22:54:28 -0600, Alan McNeil <[email protected]> wrote:
>
> Confirmed - problem exists with IO:Socket:SSL 1.24, openssl
> 0.9.8g-4ubuntu3.5 on ubuntu hardy. Timeout if more than one packet in
> email.
> Alan
>
So we have problem reports on Windows, OS/X and Ubuntu.
I am using FreeBSD and do not appear to have this problem. May I
suggest you all upgrade?!
More seriously, while I have been using the SSL code for ALL email
here for the last 2 to 3 months now, without apparent problems,
perhaps I am just not encountering the same inputs. Could someone
put together a "repeat-by" description (ideally a script, or a
set of step-by-step instructions) that demonstrate the problem.
Please include specific message contents if possible.
Thanks,
-jr
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