Salaam!
Aengus wrote:
> Hajj abujamal wrote:
>> 1. How do I prevent QDNS from attempting to add these bogus
>> canonical names ~ the too-long names and the names containing
>> asterisks or unprintable characters ~ to the dns.txt file, or
>> ignoring them when it encounters the unprintable characters
>> in the dns.txt file? and
> Where are these problematical names coming from? Is QDNS getting
> these names from the DNS server, and writing them into the dns.txt
> file, and then choking on them later when it tries to read the
> dns.txt file back, or is it choking on them when it gets the answer
> back from the DNS server?
QDNS gets them from the DNS server, writes them into the dns.txt
file, and then chokes on them later. The unprintable characters are
always three or four characters at the end of what is obviously a
corrupted canonical name.
> (Can you give me one or 2 examples of IP addresses that cause QDNS
to choke in this way?)
20160835 38.118.71.121 *.upiasiaonline.com
18459349 193.225.86.51 *.cicero.itak.sztaki.hu
18459204 202.140.141.30 *.enetmall.com
Those appear to create problems. I also get
The instruction at 0x00402384 referenced memory at 0x6e2e7873.
The memory could not be read.
errors (as I was writing this reply). These appear to be the
end-of-line corruptions. Just now I loaded a dns.txt file containing
853,309 resolved IP addresses ~ QDNS loaded only 718,170, so I checked
the file:
20156554 207.101.74.26
churchilldevelopment-churchilldevelopment-psr2081256.z74-101-207.customer.algx.n4¿ÛC¡3
was the 718,170th entry. It is these that I'd like to eliminate
before they corrupt a dns.txt file. 207.101.74.26 resolves to:
churchilldevelopment-churchilldevelopment-psr2081256.z74-101-207.customer.algx.net
(82 characters) but didn't get into the dns.txt file that way, I don't
know why. Are those last characters unicode or something?
I don't have any more examples of the end-of-line corruptions
because when it occurs, the entire dns.txt file is poisoned and I
delete it, restore an earlier dns.txt file, and start again. The next
time I have a poisoned dns.txt file, I'll save the corrupting line.
>> 2. How do I make QDNS simply merge the resolved entries in the
>> temporary dnst.txt file into the main dns.txt file without trying
>> to resolve them (they're already resolved!!!)?
> Maybe you don't need to get QDNS to merge the files. A DNS cache
file is a fairly simple text file. You should be able to just join
multiple small DNS cache files into a single file with the DOS "copy"
command (COPy DNS1.txt+DNS2.txt DNS3.txt)
Aaah, that works ~ except that the COPY command adds an EOF
character at the end of the new file. QDNS removes it when I "strip
all unresolved" with a command line like:
qdns /D dns.txt /Y 63.135.48.130 /S
and that works. So far.
>> Or perhaps a third question: Where do I look for answers to these
>> questions? QDNS is, in my opinion, a marvelous companion to
>> Analog, of comparable workmanship, but has not been updated since
>> 2000. Is there a solution for this?
> QDNS was written by someone who (as far as I can recall) never
> contributed to this list (or never identified themselves if they did
> contribute), and the source was never made available. This is
> probably as good a place to ask your question as any, but don't
> expect any definitive answers. It doesn't seem likely that any of
> the identified bugs in QDNS will ever be fixed at this stage,
> because the author is the only one who has the source, and he or she
> doesn't seem to be interested in fixing it.
Mark Thompson, of Tempe, Arizona, does not appear to have worked
with the program since 2000. His website offers numerous networking
tools at http://www.analogx.com/contents/download/network.htm for
"Everyone," "Power Users," and "Uber-Geeks," most of which I think
I'll download and explore. But it does appear that his interests have
moved to music. I have a phone call in to him, we'll see what comes
of it.
Meanwhile, I'll break up my 47.3 Mb dns.txt file to eliminate that
one line ... and use the DOS copy command.
THANKS!
> Aengus
was-salaam,
abujamal
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