FYI on getting PersistentPerl going with Qmail-Scanner... > -----Original Message----- > From: Sam Horrocks [mailto:[EMAIL PROTECTED] > Sent: Thursday, March 13, 2003 1:11 PM > To: Dallas Engelken > Cc: [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: Re: [Persistentperl-users] Followup to my STDOUT issue > > > > When I look at Step 3 on how speedy works, I see that it > does not pipe STDOUT to the backend? > > That's true. STDOUT is sent from the backend to the frontend > as output > from the script. STDOUT, is not sent from the frontend to the backend > for input. STDOUT is an output channel. > > > How am I supposed to read STDOUT from a previous pipe into > my script?? > > With STDIN. > > > Like the one I posted before. I'm trying to write a filter > that mail pipes through, but I dont want to invoke a perl > interpreter for each email! In order to get the envelope > addresses, I have to read STDOUT from the qmail-smtpd pipe to > my script. > > That should work. In pipes, the STDOUT of the previous command > (qmail in this case) becomes STDIN for the next command (your script). > Should work fine. STDIN is passed by the frontend from the > pipe to the > backend's STDIN, the backend reads it, produces output on STDOUT, then > STDOUT is copied from the backend to the frontend, where the frontend > emits it on its STDOUT. > >
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