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From Marc Slemko <ma...@znep.com>
Subject Re: mod_proxy/5972: Proxy cannot connect to many IIS 4.0 sites
Date Sat, 15 Apr 2000 01:30:00 GMT
The following reply was made to PR mod_proxy/5972; it has been noted by GNATS.

From: Marc Slemko <marcs@znep.com>
To: Ted Keller <keller@bfg.com>
Cc: Apache bugs database <apbugs@apache.org>
Subject: Re: mod_proxy/5972: Proxy cannot connect to many IIS 4.0 sites
Date: Fri, 14 Apr 2000 19:21:12 -0600 (MDT)

 On Fri, 14 Apr 2000, Ted Keller wrote:
 
 > Marc,
 > 
 > Restored buff.c to original mode.  Turned off http 1.1 processing in the
 > browser.  Hit support.dell.com site - browser appears to die (were back to
 > using default timeouts).
 
 So you mean just going to http://support.dell.com/ ?
 
 Have you tried a more recent version of Apache?
 
 Do other browsers have the same problem?
 
 I'm having trouble reproducing it.
 
 > 
 > Netstat -n reports 
 > xxx.xxx.xxx.xxx.59939  143.166.82.190.80    17152      0 64240      0
 > ESTABLISHED
 >  
 > all other connections to that site are in a FIN_WAIT mode.
 > 
 > With the buff.c modification, and http 1.1 support turned off, performance
 > improves to near acceptable. However, we still wait for the connection to
 > close which never does until the short timeout is reached.
 > 
 > Direct connections show this pages loads in about 2 seconds.
 > With the "fix" page loads in about 30 seconds
 > Without the "fix" page fails to load.
 > 
 > Obviously I like the 2 second loads....
 > 
 > 
 > On Fri, 14 Apr 2000, Marc Slemko wrote:
 > 
 > > On 14 Apr 2000, Ted Keller wrote:
 > > 
 > > > The following reply was made to PR mod_proxy/5972; it has been noted by GNATS.
 > > > 
 > > > From: Ted Keller <keller@bfg.com>
 > > > To: submit@bugz.apache.org, apache-bugdb@apache.org
 > > > Cc:  
 > > > Subject: Re: mod_proxy/5972: Proxy cannot connect to many IIS 4.0 sites
 > > > Date: Fri, 14 Apr 2000 18:17:41 -0400 (EDT)
 > > > 
 > > >  Further investigations have shown the following....
 > > >  
 > > >  1. All pages that are failing are http 1.1 type pages.
 > > >  
 > > >  2. IE5 has an option, Use HTTP 1.1 through proxy connections, which, if
 > > >  checked, seems to help.  Note - netscape 4 does not have an equivalent
 > > >  selectable feature.
 > > 
 > > What if you disable all HTTP/1.1 support in IE?
 > > 
 > > >  
 > > >  3. A modification in buff.c as follows... forces "short" timeouts for
 > > >  sites that do NOT close connections at the end of a block transmission.
 > > >  The modification below set this to 8 seconds - this should really be a
 > > >  configurable parameter.
 > > >  
 > > >  With these, we are starting to see acceptable performance for these "bad"
 > > >  sites.
 > > 
 > > Refresh my memory; can you give me a URL that exhibits this problem?
 > > 
 > 
 > 
 > support.dell.com
 > 
 > We have also seen this on...
 > 
 > www.bell.ca
 > www.winntmag.com
 > www.nai.com
 > 
 > > Thanks.
 > > 
 > 
 

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