Re: http 400 error messages

(cross-post added to Vista Networking)
"Scottish Lad" <Scottish Lad@discussions.microsoft.com> wrote in message
news:0E1D327F-AC39-46C7-81D2-1564B651D79A@microsoft.com...
>I have a same problem... tried every other website and it works fine.. But I
> cant browse ebay.. first page seems to be fine but then when I click on any
> link.. it gives me http 400 error..
>
> I have also experienced htp 500 error too..


Both errors occur when the browser sends headers which the site's server
doesn't like or vice versa. E.g. the easiest way to see it sometimes is to
simulate an HTTP connection with telnet to the site on port 80. Some sites
*force* you to use HTTP 1.1 as the protocol (as given on the GET).

For example, telnet ebay.com 80 with just GET / works.
It requests a redirect to www.ebay.com but requesting just GET /
or GET / HTTP/1.1 there would not work; it caused an HTTP 302
redirection here:

Location:
http://pages.ebay.com/messages/page_....06.47.112.MST

In fact, it is easy to show that not having HTTP 1.1 on the GET causes
an HTTP 500. Many sites which want HTTP 1.1 assume it when you
enter a Host: header. Not www.ebay.com apparently.
The only way that I was able to get a clean simulated connection
was to enter both:
GET / HTTP/1.1
Host: www.ebay.com

BTW that particular server hangs on to the connection much longer
than normal. To close it you need to press Ctrl-] to escape into
telnet's command mode and then enter C and Q (for close
and quit).

Another possibility would be that you are using the wrong URL or a corrupt
cookie. The case that Frank is trying to help you with would be having an IP
address reassigned to a different server which wouldn't be compatible with
either of those things that your browser was sending.

You can use Fiddler2 to trace the real HTTP exchange for more detail.
You can use netcap and format the resulting .cap file with Ethereal
if the problem is at a lower level.


>
> please help guys.. every other website works fine on IE 7..
>
> PS. I am running Vista..


If you need more help you must provide more details.
For example, tell us exactly what all you see and what you mean by this:

<quote>
first page seems to be fine but then when I click on any link
</quote>

Be very observant. Watch especially what is happening in the Status bar
but also note any changes in the Title bar, Address bar, as well as the
main display area.

Before clicking on "any link" use right-click, Copy Shortcut so you can document
exactly what you are doing. Etc.

BTW I don't have your OS so I am cross-posting this reply to
the Vista Networking NG in case you ultimately need some Vista specific help.


HTH

Robert Aldwinckle
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