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Posted to bugs@httpd.apache.org by bu...@apache.org on 2006/04/04 22:46:10 UTC

DO NOT REPLY [Bug 39206] New: - mod_proxy_balancer does not treat trailing slash like Proxypass directive

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           Summary: mod_proxy_balancer does not treat trailing slash like
                    Proxypass directive
           Product: Apache httpd-2
           Version: 2.2.0
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Keywords: ErrorMessage
          Severity: normal
          Priority: P2
         Component: mod_proxy_balancer
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: cwang@kenwoodusa.com


Running httpd-2.2.0-1 on CentOS 4.3 (rebuilt source rpm package).  Found a bug
with mod_proxy_balancer module where it does not treat a URL the same as
mod_proxy module would.

Using Apache as a reverse proxy with mod_proxy module passing this directive to
a single backend server works just fine:

ProxyPass /KenwoodAccess/ http://172.20.111.33:80/KenwoodAccess/

This next example is a WORKING configuration for mod_proxy_balancer. No errors
are generated in Apache and passes to the backend servers:

ProxyPass /KenwoodAccess balancer://KWA_cluster lbmethod=byrequests
stickysession=JSESSIONID nofailover=off
<Proxy balancer://KWA_cluster>
        BalancerMember http://172.20.111.33:80/KenwoodAccess smax=15 loadfactor=1
        BalancerMember http://172.20.111.34:80/KenwoodAccess smax=15 loadfactor=1
        #BalancerMember http://test.kenwoodaccess.com/noworkers.html smax=15
loadfactor=80
</Proxy>

Where the bug happens:

ProxyPass /KenwoodAccess/ balancer://KWA_cluster lbmethod=byrequests
*NOTE: The trailing slash in the first option.

This will generate an error message in Apache logs:

[Mon Apr 03 17:04:55 2006] [warn] proxy: No protocol handler was valid for the
URL /site/images/buts/forgotpassword.gif. If you are using a DSO version of
mod_proxy, make sure the proxy submodules are included in the configuration
using LoadModule.

This error message seems to be misleading when passing options using the
trailing slash.  How I am interpreting it is mod_proxy_balancer doesn't want to
call on other mod_proxy submodules properly.

Googling shows that people resolved this Apache error message by adding
'LoadModule' for the submodules of mod_proxy (ie: mod_proxy_connect,
mod_proxy_http, etc.).  This is not the case with me, since Apache shows these
submodules as loaded:

httpd -M
 proxy_module (shared)
 proxy_connect_module (shared)
 proxy_ftp_module (shared)
 proxy_http_module (shared)
 proxy_ajp_module (shared)
 proxy_balancer_module (shared)

This has been troubleshooted down to trailing slashes as the culprit for
mod_proxy_balancer and mod_proxy Proxypass directive works just fine with
trailing slashes.

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DO NOT REPLY [Bug 39206] - mod_proxy_balancer does not treat trailing slash like Proxypass directive

Posted by bu...@apache.org.
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG�
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=39206>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND�
INSERTED IN THE BUG DATABASE.

http://issues.apache.org/bugzilla/show_bug.cgi?id=39206


rpluem@apache.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE




------- Additional Comments From rpluem@apache.org  2006-04-04 22:11 -------


*** This bug has been marked as a duplicate of 39203 ***

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