[Catalyst] IE has problems with catalyst

Ash Berlin ash_cpan at firemirror.com
Wed Sep 10 14:53:27 BST 2008

On 10 Sep 2008, at 14:19, James R. Leu wrote:

> Are you sure it not actually a DNS issue?  Check the URLs being sent  
> back
> by the cat app. Do they contain the FQDN you are expecting?  Are you  
> able to
> reproduce this issue on multiple IE machines?  Have you tried running
> wireshark on the IE machine to watch exactly what it is doing on the  
> wire?
> Good luck
> On Wed, Sep 10, 2008 at 05:51:39AM -0700, snookums wrote:
>> No authentication is being used right now. I've also checked my  
>> apache config
>> and used the LiveHeader add-on to Firefox. The keep-alive headers  
>> seem to be
>> just as they should be. I'm beginning to suspect that the long  
>> processing
>> time before the application can return content is the culprit. It  
>> can take a
>> while before the body is returned. The browser consistently tries  
>> for about
>> 10 seconds and then throws a dns error screen up. I tried placing
>> $c->engine->write calls throughout to keep the connection active,  
>> but it
>> doesn't seem to have done anything. Thanks for your reply.
>> Dami Laurent (PJ) wrote:
>>>> -----Message d'origine-----
>>>> De : snookums [mailto:kyle at lakeofburningfire.org]
>>>> Envoyé : mercredi, 10. septembre 2008 12:03
>>>> À : catalyst at lists.scsys.co.uk
>>>> Objet : [Catalyst] IE has problems with catalyst
>>>> I hope someone can point out to me what's wrong here. I have a  
>>>> catalyst
>>>> application that I've been developing. It takes a submitted
>>>> link, processes
>>>> it, and regurgitates it with some changes. It's a get request. The
>>>> processing can take up to about 10 seconds. I thought
>>>> everything was going
>>>> fine, but I'm developing on mac. I've been testing it in
>>>> Safari. I quickly
>>>> found that IE users couldn't access my application. They can get  
>>>> to the
>>>> front page, but when they submit a link, the browser runs for
>>>> a little while
>>>> and then gives a dns error page: cannot access this page, page not
>>>> available, etc. Apache error and access logs don't even show the  
>>>> hit.
>>>> I looked online and found that the problem might have
>>>> something to do with
>>>> the keep-alive option. I changed my main app file to look like  
>>>> this.
>>>> use parent qw/Catalyst/;
>>>> use Catalyst qw/-k
>>>>               -Debug
>>>>               ConfigLoader
>>>>               Static::Simple
>>>>               UserAgent
>>>>               Unicode
>>>>               Compress::Gzip/;
>>>> our $VERSION = '0.01';
>>>> That didn't fix the problem, but I noticed some improvement for  
>>>> slower
>>>> connections that weren't even getting the front page before. I
>>>> also should
>>>> mention that I'm using Catalyst with the latest versions of
>>>> perl, apache,
>>>> and mod_perl. I tried changing a few of my keep-alive options
>>>> in apache conf
>>>> as well to increase the time before dropping a connection. I
>>>> haven't noticed
>>>> any difference.
>>>> Can anyone tell me how -k works? Is there a default timeout
>>>> value that I can
>>>> change? Is this even the problem?
>>>> -- 
>>> Hi,
>>> If your hypothesis about needing Keepalive is correct, and if your
>>> application in production runs under Apache, then you you need to  
>>> activate
>>> Keepalive in your Apache configuration; its not a Catalyst  
>>> property. So
>>> edit your httpd.conf and add
>>>  KeepAlive On
>>> One reason why this might be important is if you use the Microsoft  
>>> NTLM
>>> protocol for
>>> authentifying your users (mod_auth_ntlm or mod_auth_sspi or
>>> PerlAuthenHandler Apache2::AuthenNTLM); these definitely need  
>>> KeepAlive to
>>> be on.
>>> Hope this helps,
>>> Best regards,
>>> Laurent Dami

I've had weird errors that look like a DNS error from IE before.  
Something along the lines of 'the site is unavailable'. This was  
infact the error of IE not liking the way i was serving the static PDF  

Can you tell us the exeact wording of the error dialog IE shows?


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