[thechat] Weird-ass FTP problem

William Anderson neuro at well.com
Sun Aug 29 07:59:03 CDT 2004

Madhu Menon wrote:
> [snip]
> Where are they mystery artifacts coming from? How could it possibly 
> happen in the FTP process? I'm using FTP Voyager, FWIW.

I doubt it's happening in the FTP stream - try downloading a JPEG you've 
just uploaded, because I bet it'll look identical when you look at it.

It looks to me that the shiokfood.com host has some sort of inline JPEG 
downsampling going on when transfers get to a certain size to save their 
(and presumably your) bandwidth transfer rates - either on the webserver 
itself or at some network egress point.  Look at both pictures - the JPEG 
downsampling only appears to begin about 1/3rd down the photo, above that 
line both photos are *identical*.

Seriously, talk to your hoster and see what the hell they're playing at.

FWIW, I looked at those photos with Firefox 0.9.2 on Windows XP Professional 
SP2 from the subnet with no transparent proxies inline.

_ __/|  William Anderson      | Brodie: The Force is strong with this one
\`O_o'  neuro at well dot com |    Jay: Dude, don't encourage him
=(_ _)= http://neuro.me.uk/   |  -- Mallrats, (1995)
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