Re: Problems with access to a web page



"Hipfidelity" <Hipfidelity@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:FD228FA4-380E-4448-9394-4983659E1B6A@xxxxxxxxxxxxxxxx
> Thanks :) OK, I got the blank screen and entered
>
> GET http://s6.invisionfree.com/UK_The_Rasmus/Index.php
>
> ...but then when I pressed enter I just got the black command screen with 3
> lines on it (what was actually written there I have no idea because as with
> my writing it didn't show up on screen). Hmm.......

Yes. It looks as if it has changed since my first test.
In fact I was only able to get anything out of it by changing
the simulation by: appending HTTP/1.1 to the GET request
and by adding HOST: s6.invisionfree.com as another header
Even that was not enough to get it to respond normally and I had
to give it an extra Enter. But then I got this which was hardly
what I expecting:

<example from="the capture file">
GET http://s6.invisionfree.com/UK_The_Rasmus/Index.php HTTP/1.1
HOST: s6.invisionfree.com
HTTP/1.1 200 OK
Date: Sun, 24 Apr 2005 16:46:50 GMT
Server: Apache
Content-Length: 0
Connection: close
Content-Type: text/html; charset=ISO-8859-1
</example>

It's probably waiting for a User-Agent: header now too.

Ha! Look what I get now when I send the exact same request
that IE sends:

<example>
HTTP/1.1 200 OK
Date: Sun, 24 Apr 2005 17:11:56 GMT
Server: Apache
Content-Encoding: gzip
Vary: Accept-Encoding
Content-Length: 26
Connection: close
Content-Type: text/html; charset=ISO-8859-1

??? ?

Connection to host lost.
</example>

I took out *only* this line
<example>
Accept-Encoding: gzip, deflate
</example>
and got exactly the same 0 length response
that I showed above from an even more reduced
simulation attempt.


Something has definitely changed. (E.g. response is now compressed
instead of being clear text.)

You will probably be better off then tracing the normal request
made by IE and examining an actual response to it.
I use netcap (from the XP Support Tools) but Ethereal's PCAP
utility also works as a capture tool. I use Ethereal to format a
captured trace in any case. Note that if they are using compression
now you won't be able to read anything and so you will have less
of an idea if stuff is being truncated but if you can do the same test
on two machines, one which works normally and a problem case,
you should be able to get something (e.g. lengths) to compare with.


Have you tried the MTU check yet? Ping at least still works
with the server you have chosen to test.


Good luck

Robert
---


.



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