RE: [squid-users] HTTP protocol violation error using .NET 2.0 web services through Squid-2.5 proxy

Hi Mark,

Is this the tcpdump you were after?

Our web service (which our .NET client application at Deakin University
is trying to call through their Squid proxy) is at
http://services.qsrinternational.com

cheers,

Marcus

> Hi Marcus,
>
> Sorry for the delay, took a while to organise with our sysadmin. The
> following the tcpdump you requested.
>
> 14:26:29.944471 IP 128-184-148-120.its.deakin.edu.au.1239
> felix.its.deakin.edu.au.squid: S 431603593:431603593(0) win 65535 <mss

> 1460,nop,nop,sackOK>
>
> E..0..@........x.......8........p...~...........
> 14:26:29.944658 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 3551896320 win 65535
>
> E..(..@........x.......8........P...4.........
> 14:26:29.946638 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: P 0:384(384) ack 1 win 65535
>
> E.....@....m...x.......8........P.......POST
> http://services.qsrinternational.com/
> 14:26:29.948167 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: P 384:1714(1330) ack 1461 win 65535
> E..Z..@........x.......8...
>
> ....P....p..<?xml version="1.0" encoding="utf-8"?><soa
> 14:26:29.948524 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 4381 win 65535
>
> E..(..@........x.......8...<....P.... ........
> 14:26:29.948877 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 7301 win 65535
>
> E..(..@........x.......8...<....P.............
> 14:26:29.949114 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 10221 win 65535
>
> E..(..@........x.......8...<....P....9........
> 14:26:30.102041 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 11447 win 64309
>
> E..(..@........x.......8...<....P..5.9........
> 14:26:38.114901 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: P 1714:2098(384) ack 11447 win 64309
>
> E.....@....b...x.......8...<....P..5.'..POST
> http://services.qsrinternational.com/
> 14:26:38.116810 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: P 2098:3428(1330) ack 12907 win 65535
>
> E..Z..@........x.......8.......jP....*..<?xml version="1.0"
encoding="utf-
> 8"?><soa
> 14:26:38.116875 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 15617 win 65535
>
> E..(..@........x.......8........P....r........
> 14:26:38.117291 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 18537 win 65535
> E..(..@........x.......8.......hP....
>
> ........
> 14:26:38.117521 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 21173 win 65535
>
> E..(..@........x.......8........P.............
> 14:26:38.117658 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: . ack 22893 win 65535
>
> E..(..@........x.......8.......lP.............
> 14:26:38.140319 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: P 3428:3865(437) ack 22893 win 65535
>
> E.....@...."...x.......8.......lP.......POST
> http://services.qsrinternational.com/
> 14:26:38.140564 IP 128-184-148-120.its.deakin.edu.au.1239 >
> felix.its.deakin.edu.au.squid: R 3865:3865(0) ack 22893 win 0
>
> E..(..@........x.......8.......lP....M........
> 14:27:11.531696 IP 128-184-148-120.its.deakin.edu.au > win-
> f.its.deakin.edu.au: icmp 40: echo request seq 7936
>
> E..<...........x.......^....ABCDEFGHIJKLMNOPQRSTUVWABCDEFGHI
> 14:27:11.532078 IP 128-184-148-120.its.deakin.edu.au.1242 > win-
> f.its.deakin.edu.au.microsoft-ds: S 2119852512:2119852512(0) win 65535
> <mss 1460,nop,nop,sackOK>
>
> E..0..@........x........~Za.....p....c..........
> 14:27:11.532305 IP 128-184-148-120.its.deakin.edu.au.1242 > win-
> f.its.deakin.edu.au.microsoft-ds: . ack 3591166814 win 65535
>
> E..(. @........x........~Za....^P.............
> 14:27:11.532395 IP 128-184-148-120.its.deakin.edu.au > win-
> f.its.deakin.edu.au: icmp 40: echo request seq 8192
> E..<.
>
> .........x......-^.. .ABCDEFGHIJKLMNOPQRSTUVWABCDEFGHI
> 14:27:11.532511 IP 128-184-148-120.its.deakin.edu.au.1242 > win-
> f.its.deakin.edu.au.microsoft-ds: P 0:137(137) ack 1 win 65535
>
>
E.....@....Q...x........~Za....^P...4........SMBr.....S.................
....
> .b..PC
> 14:27:11.533969 IP 128-184-148-120.its.deakin.edu.au.1242 > win-
> f.its.deakin.edu.au.microsoft-ds: . 137:1597(1460) ack 185 win 65351
> E.....@....$...x........~Zbj....P..G......
> z.SMBs.........BSRSPYL ........@....z
> .
> 14:27:11.534066 IP 128-184-148-120.its.dea
>
>
> hope this is what you require.
>
> Regards,
> Shannon

-----Original Message-----
From: Mark Nottingham [mailto:mnot@yahoo-inc.com]
Sent: Friday, 20 October 2006 1:29 PM
To: Marcus Ogden
Cc: squid-users@squid-cache.org
Subject: Re: [squid-users] HTTP protocol violation error using .NET 2.0
web services through Squid-2.5 proxy

Hi,

Can you post a trace (e.g., tcpdump, tcpflow) of the interaction
between .NET and Squid? Just headers is fine. I'd be very interested
to see what's happening here...

Thanks,

On 2006/10/19, at 4:42 AM, Marcus Ogden wrote:

> Hello,
>
> A client of ours using the Squid proxy server (version
> 2.5.STABLE6-3.4E.12.1) on Red Hat Enterprise Linux 4 is experiencing a
> problem when running our .NET 2.0 client application, which
> communicates
> with a .NET 2.0 web service on our server.
>
> When our client application sends an HTTP 1.1 request through the
> Squid
> proxy to our server, it receives the error:
>
> "The server committed a protocol violation.
> Section=ResponseStatusLine"
>
> Other clients not using Squid are not experiencing this problem.
>
> Researching this, we've found a few posts that report similar problems
> using .NET 2.0 web services and/or the HTTP 1.1 protocol through
> Squid,
> e.g.
>
> http://forums.asp.net/thread/1194960.aspx
> http://groups.google.to/group/
> microsoft.public.dotnet.framework.remoting
> /msg/dae1a8e9eed3dcf3?dmode=source
> http://www.squid-cache.org/mail-archive/squid-users/200606/0534.html
>
> We've also tried the suggestion in
> http://forums.asp.net/thread/1284850.aspx to set the
> useUnsafeHeaderParsing property in the client .NET application's
> config
> file to "true", but our client reports this hasn't solved the problem.
>
> Any suggestions on how we can resolve this issue would be much
> appreciated.
>
> Regards,
>
> Marcus Ogden
> Software Development
> QSR International
> www.qsrinternational.com
>
>

--
Mark Nottingham
mnot@yahoo-inc.com