Re: [squid-users] NONE/411 Length Required

On Thu, 18 Jun 2009 10:20:09 +1000, Mark Nottingham <mnot_at_yahoo-inc.com>
wrote:
> Weird. The code that I'm assuming generates the 411 is (squid2-HEAD):

Reporter is using 3.0. The header parse and validation code is similar only
regarding flow and design.
Particular lines and if-else are very different in spots between each of
the 3 current release of Squid.

>
> if (!clientCheckContentLength(request) || httpHeaderHas(&request-
> >header, HDR_TRANSFER_ENCODING)) {
> err = errorCon(ERR_INVALID_REQ, HTTP_LENGTH_REQUIRED, request);
> http->al.http.code = err->http_status;
> http->log_type = LOG_TCP_DENIED;
> http->entry = clientCreateStoreEntry(http, request->method,
> null_request_flags);
> errorAppendEntry(http->entry, err);
> return -1;
> }
>
> but clientCheckContentLength doesn't look like it's triggering it:
>
> static int
> clientCheckContentLength(request_t * r)
> {
> switch (r->method->code) {
> case METHOD_GET:
> case METHOD_HEAD:
> /* We do not want to see a request entity on GET/HEAD requests */
> return (r->content_length <= 0 || Config.onoff.request_entities);
> default:
> /* For other types of requests we don't care */
> return 1;
> }
> /* NOT REACHED */
> }
>
> because the request method is POST. However, the request headers don't
> have Transfer-Encoding...
>
> What am I missing? I know Bijayant is using Squid-3, but I'm observing
> the same behaviour in my build of 2...
>
>
>
> On 17/06/2009, at 4:00 PM, Mark Nottingham wrote:
>
>> [ moving to squid-dev ]
>>
>> From what I can see, the site is using JavaScript to do autocomplete
>> on a search field. The autocomplete requests use POST, but without a
>> body.
>>
>> With Firefox, this results in a POST request without a body; i.e.,
>> it doesn't have transfer-encoding *or* content-length.
>>
>> Such a POST request is legal (although atypical; Safari and I think
>> others will include a Content-Length: 0 to signal no body
>> explicitly). See
>>
<http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-06#section-4.3
>>
>> >.
>>
>> I think the right thing to do here is for Squid to only 411 when
>> there's a transfer-encoding present; if there's no content-length,
>> it's safe to assume 0 length.
>>
>> Cheers,
>>
>>
>> On 17/06/2009, at 2:07 PM, Bijayant Kumar wrote:
>>
>>>
>>> Bijayant Kumar
>>>
>>>
>>> --- On Mon, 15/6/09, Bijayant Kumar <bijayant4u_at_yahoo.com> wrote:
>>>
>>>> From: Bijayant Kumar <bijayant4u_at_yahoo.com>
>>>> Subject: Re: [squid-users] NONE/411 Length Required
>>>> To: "squid users" <squid-users_at_squid-cache.org>
>>>> Date: Monday, 15 June, 2009, 6:48 PM
>>>>
>>>>
>>>> --- On Mon, 15/6/09, Amos Jeffries <squid3_at_treenet.co.nz>
>>>> wrote:
>>>>
>>>>> From: Amos Jeffries <squid3_at_treenet.co.nz>
>>>>> Subject: Re: [squid-users] NONE/411 Length Required
>>>>> To: "Bijayant Kumar" <bijayant4u_at_yahoo.com>
>>>>> Cc: "squid users" <squid-users_at_squid-cache.org>
>>>>> Date: Monday, 15 June, 2009, 6:06 PM
>>>>> Bijayant Kumar wrote:
>>>>>> Hello list,
>>>>>>
>>>>>> I have Squid version 3.0.STABLE 10 installed on
>>>> Gentoo
>>>>> linux box. All things are working fine, means caching
>>>>> proxying etc. There is a problem with some sites. When
>>>> I am
>>>>> accessing one of those sites, in access.log I am
>>>> getting
>>>>>>
>>>>>> NONE/411 3692 POST
>>>>>> http://wwww.justdial.com/autosuggest_category_query_main.php?
>>>>> - NONE/- text/html
>>>>>>
>>>>>> And on the webpage I am getting whole error page
>>>> of
>>>>> squid. Actually its a search related page. In the
>>>> search
>>>>> criteria field as soon as I am typing after two words
>>>> I am
>>>>> getting this error. The website in a question is "http://justdial.com

>>>>> ". But it works without the Squid.
>>>>>>
>>>>>>
>>>>>> I tried to capture the http headers also which
>>>> are as
>>>>> below
>>>>>>
>>>>>>
http://wwww.justdial.com/autosuggest_category_query_main.php?city=Bangalore&search=Ka
>>>>>>
>>>>>>
>>>>>>
>>>>>> POST
>>>>>
>>>> /autosuggest_category_query_main.php?city=Bangalore&search=Ka
>>>>> HTTP/1.1
>>>>>>
>>>>>> Host: wwww.justdial.com
>>>>>>
>>>>>> User-Agent: Mozilla/5.0 (X11; U; Linux i686;
>>>> en-US;
>>>>> rv:1.8.1.16) Gecko/20080807 Firefox/2.0.0.16
>>>>>>
>>>>>> 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: en-us,en;q=0.7,hi;q=0.3
>>>>>>
>>>>>> Accept-Encoding: gzip,deflate
>>>>>>
>>>>>> Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
>>>>>>
>>>>>> Keep-Alive: 300
>>>>>>
>>>>>> Connection: keep-alive
>>>>>>
>>>>>> Referer: http://wwww.justdial.com/
>>>>>>
>>>>>> Cookie:
>>>> PHPSESSID=d1d12004187d4bf1f084a1252ec46cef;
>>>>>
>>>> __utma=79653650.2087995718.1245064656.1245064656.1245064656.1;
>>>>> __utmb=79653650; __utmc=79653650;
>>>>>
>>>> __utmz=79653650.1245064656.1.1.utmccn=(direct)|utmcsr=(direct)|
>>>> utmcmd=(none);
>>>>> CITY=Bangalore
>>>>>>
>>>>>> Pragma: no-cache
>>>>>>
>>>>>> Cache-Control: no-cache
>>>>>>
>>>>>>
>>>>>>
>>>>>> HTTP/1.x 411 Length Required
>>>>>>
>>>>>> Server: squid/3.0.STABLE10
>>>>>>
>>>>>> Mime-Version: 1.0
>>>>>>
>>>>>> Date: Mon, 15 Jun 2009 11:18:10 GMT
>>>>>>
>>>>>> Content-Type: text/html
>>>>>>
>>>>>> Content-Length: 3287
>>>>>>
>>>>>> Expires: Mon, 15 Jun 2009 11:18:10 GMT
>>>>>>
>>>>>> X-Squid-Error: ERR_INVALID_REQ 0
>>>>>>
>>>>>> X-Cache: MISS from bijayant.kavach.blr
>>>>>>
>>>>>> X-Cache-Lookup: NONE from
>>>> bijayant.kavach.blr:3128
>>>>>>
>>>>>> Via: 1.0 bijayant.kavach.blr
>>>> (squid/3.0.STABLE10)
>>>>>>
>>>>>> Proxy-Connection: close
>>>>>>
>>>>>> Please suggest me what could be the reason and
>>>> how to
>>>>> resolve this. Any help/pointer can be a very helpful
>>>> for me.
>>>>>
>>>>>>
>>>>>> Bijayant Kumar
>>>>>>
>>>>>>
>>>>>> Get your new
>>>> Email
>>>>> address!
>>>>>> Grab the Email name you've always wanted before
>>>>> someone else does!
>>>>>> http://mail.promotions.yahoo.com/newdomains/aa/
>>>>>
>>>>>
>>>>> NONE - no upstream source.
>>>>> 411 - "Content-Length missing"
>>>>>
>>>>> HTTP requires a Content-Length: header on POST
>>>> requests.
>>>>>
>>>>
>>> How to resolve this issue. Because the website is on internet and
>>> its working fine without the squid. When I am bypassing the proxy,
>>> I am not getting any type of error.
>>>
>>> Can't this website be accessed through the Squid?
>>>>
>>>>> Amos
>>>>> -- Please be using
>>>>> Current Stable Squid 2.7.STABLE6 or
>>>> 3.0.STABLE15
>>>>> Current Beta Squid 3.1.0.8 or
>>>> 3.0.STABLE16-RC1
>>>>>
>>>>
>>>>
>>>> New Email addresses available on
>>>> Yahoo!
>>>> Get the Email name you've always wanted on the new
>>>> @ymail and @rocketmail.
>>>> Hurry before someone else does!
>>>> http://mail.promotions.yahoo.com/newdomains/aa/
>>>>
>>>
>>>
>>> Get your new Email address!
>>> Grab the Email name you've always wanted before someone else
>>> does!
>>> http://mail.promotions.yahoo.com/newdomains/aa/
>>
>> --
>> Mark Nottingham mnot_at_yahoo-inc.com
>>
>>
>
> --
> Mark Nottingham mnot_at_yahoo-inc.com
Received on Thu Jun 18 2009 - 04:20:07 MDT