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Weird things happening when posting binaries

 
 
loris
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      04-12-2004
Hi there folks

I've recently noticed that if I post any multi-part binary files, they
end up slightly damaged on the server.

The files are showing complete on servers, but if I download one back
and compare it to the original, the posted one is always a few bytes
(45 in one case) shorter than the original. This results in little
"jumps" in the audio when the file is played.

I've posted a couple of screenshots to ab.text - Original.jpg &
Posted.jpg, if anyone wants a look (poster: loris). This was partly
to see if whatever was happening was affecting other files apart from
mp3. It didn't appear to, but maybe it only happens with multipart
messages, and these jps are too small.

I have two PC's on a home lan. This happens on both of them. I have
used either Powerpost 2000 or Agent 1.93. Now here's the bit that's
weird - it only happens if I post using UUE. If I switch to yEnc, any
file I post comes out ok. I was using 7500 max lines in Powerpost,
but changed that to 5000 when this problem started. Still no joy.
It's almost like it's dropping a couple of bytes for every segment.
Is that possible?

Is there anyone out there with knowledge of newsservers, who might
shed some light on what's happening here?

For info, I have an adsl connection, with a Conexant modem/router
connected to a small hub. The two PC's run off that hub.

cheers

Dave
 
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loris
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      04-12-2004
On Mon, 12 Apr 2004 13:40:45 +0100, loris
<> wrote:

>Hi there folks
>
>I've recently noticed that if I post any multi-part binary files, they
>end up slightly damaged on the server.
>
>The files are showing complete on servers, but if I download one back
>and compare it to the original, the posted one is always a few bytes
>(45 in one case) shorter than the original. This results in little
>"jumps" in the audio when the file is played.
>
>I've posted a couple of screenshots to ab.text - Original.jpg &
>Posted.jpg, if anyone wants a look (poster: loris). This was partly
>to see if whatever was happening was affecting other files apart from
>mp3. It didn't appear to, but maybe it only happens with multipart
>messages, and these jps are too small.
>
>I have two PC's on a home lan. This happens on both of them. I have
>used either Powerpost 2000 or Agent 1.93. Now here's the bit that's
>weird - it only happens if I post using UUE. If I switch to yEnc, any
>file I post comes out ok. I was using 7500 max lines in Powerpost,
>but changed that to 5000 when this problem started. Still no joy.
>It's almost like it's dropping a couple of bytes for every segment.
>Is that possible?
>
>Is there anyone out there with knowledge of newsservers, who might
>shed some light on what's happening here?
>
>For info, I have an adsl connection, with a Conexant modem/router
>connected to a small hub. The two PC's run off that hub.
>
>cheers
>
>Dave


I've now posted through another newsserver, and my test posts have
been fine. I've also tried zipping up an mp3 and posting that. When
I do , the size remains correct.

So to recap:

1) If I post an mp3 via my ISP's nntp servers, the file ends up
missing a few bytes.

2) If I zip the same file up & post it, it's fine.

3) If I post using yEnc encoding, it's fine.

4) If I post via Easynews nntp, it's fine.

Does this mean my ISP (or the company whose newservers they use) are
deliberately (or accidentally) screwing up multipart mp3 binaries
encoded with UUE?

-Confused of UK
 
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