Re: "Error 400" error on some servers for "security" reasons

On Fri 08 Sep 2006, Max Kirillov wrote:

> Go, for example, at http://psi-im.org/wiki/. You must see
> the "http error 400" page:

I used ethereal to check the request sent.
This is with wwwoffle:

GET /wiki/ HTTP/1.1
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.12) Gecko/20060607 Debian/1.7.12-1.2
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: nl,en;q=0.5
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Host: psi-im.org
Connection: close
Accept-Encoding: x-gzip; q=1.0, gzip; q=1.0, x-deflate; q=0.9, deflate; q=0.9, identity; q=0.1
TE: chunked


This is without wwwoffle:

GET /wiki/ HTTP/1.1
Host: psi-im.org
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.12) Gecko/20060607 Debian/1.7.12-1.2
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: nl,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive

and rearranged to follow the wwwoffle order of headers, to make
it easier to compare:

GET /wiki/ HTTP/1.1
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.12) Gecko/20060607 Debian/1.7.12-1.2
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: nl,en;q=0.5
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Host: psi-im.org
Connection: keep-alive
Accept-Encoding: gzip,deflate

The differences are:
Connection: close / keep-alive
TE: (none) / chunked


A quick manual telnet check shows that the site objects to the TE:
chunked line. Pretty pathetic if you ask me. (i.e. the site (or the
site's admins) suck badly).


Paul Slootman