[Dnsmasq-discuss] Logging milliseconds

[mabra at manfbraun.de]

Hello !

Ok, for a short moment, this might be ok. But request/response usually
dont follow each other directly, because there are some more of them
"on the road". DNSMasq has already all this internally, while externally,
one must really write a piece of tracker, which is able to wait for the
answer of each request. Not a nice bash onliner .. ;-)

But my question was just, if something like a format statement for the
logoutput exists. It this exist (and I do not see it) then everything is
already done.

It's because I see huge delay for apps nearly each day. The provider
declared to have the issue fixed. Sort of. The port are not longer
blocked - but now, there are huge delay. The may probably have
a contract with the NSA .... ;-)

Thanks anyway,

Manfred


> -----Original Message-----
> From: Albert ARIBAUD [mailto:albert.aribaud at free.fr]
> Sent: Monday, June 20, 2016 3:09 PM
> To: mabra at manfbraun.de
> Cc: dnsmasq-discuss at lists.thekelleys.org.uk
> Subject: Re: [Dnsmasq-discuss] Logging milliseconds
> 
> Hi,
> 
> Le Mon, 20 Jun 2016 13:13:26 +0200
> <mabra at manfbraun.de> a écrit:
> 
> > Hello !
> >
> > I am just facing the situation, that my dns-request needing a very
> > long time, and this is wether my requesting client, nor dnsmasq. It's
> > the provider trying my attempt to ignore his DNSs and use free DNSs,
> > as we have several here in Germany.
> >
> > Its not a whole week gone, when I opened an issue about DNS blocking.
> > It was that, I have enough facts - I'll not try to write whole story
> > here. But at that last issue, I found me in the situation, where I
> > want to analyse dnsmasq's log.
> >
> > I am missing [wrote about that here more then a year ago:
> > DNSMASQ log output format] the relationship between a clients
> > request and dnsmasq's answer to it. There can be several in
> > progress ... From the log, you'll not see it.
> >
> > Today, due to the DNS blocking story, I want to make a stats over
> > the log, but it contains only seconds in the timestamp, were I
> > wished it to have milliseconds too. Is that possible ? I cannot
> > find something about this.
> >
> > Additionally, at best, I would fetch the output, if I start the
> > process by myself and pipe its output directly. Probably not
> > doable for me. I would write a mini program in C# ... Another
> > solution would be, to create a pipe in the filesystem and define
> > it as the logfile for the dnsmasq. I have done this, at least with
> > apache, it works (Apache has the charm, to be able to host
> > a program und pump it's output into it - but thats easy for me).
> >
> > Wether or not, without milliseconds, it would be sensless.
> >
> > Any help, notes and hints are very welcome !!
> 
> If you can run wireshark or even simply tcpdump on the machine that runs
> dnsmasq, then you could log DNS requests and replies with accurate time
> stamping. Would this be enough for you?
> 
> > Thanks anyway,
> 
> Amicalement,
> --
> Albert.