Forum Discussion

Ken_Cottrell's avatar
Ken_Cottrell
Icon for Nimbostratus rankNimbostratus
May 17, 2011

Multiple redirect/respond directives not allowed in logs

The rule is supposed to only fire on root "/" requests. It is supposed to not fire on user agent string matches defined in a search engine class list, but it should fire on user agent string matches defined in a mobile calls list.

 

If it is not a root request, it should fall through to the default pool for the VS.

 

 

As a side note, mobile.site.com is a CNAME for www.site.com

 

 

Does anyone see the problem with this rule?

 

 

when HTTP_REQUEST {

 

if { ([HTTP::uri] equals "/") } {

 

if {not([class match [string tolower [HTTP::header User-Agent]] contains user_agent_search_engine_list])} {

 

if {([class match [string tolower [HTTP::header User-Agent]] contains user_agent_mobile_list]) } {

 

HTTP::redirect http://mobile.site.com/mobile/index.jsp

 

}

 

}

 

 

}

 

else {

 

pool www.site.com_80 }

 

}

 

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  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 17, 2011
    Hi Ken,

     

     

    You only have one redirect in that iRule. Do you have another iRule on the virtual server? Or do you have an HTTP class which does a redirect? Can you post an anoymized copy of the 'b virtual VS_NAME list' output?

     

     

    Thanks, Aaron
  • Colin_Walker_12's avatar
    Colin_Walker_12
    Historic F5 Account
    May 17, 2011
    Also, the specific log entry that you're seeing would be helpful. As Aaron said, that rule alone wouldn't cause a multi-redirect error.

     

     

    Thanks,

     

    Colin
  • Ken_Cottrell's avatar
    Ken_Cottrell
    Icon for Nimbostratus rankNimbostratus
    May 17, 2011
    Yes there is another iRule prior to the mobile site iRule which redirects short name to full name shown below:

     

     

    when HTTP_REQUEST {

     

    switch [string tolower [HTTP::host]] {

     

    site.com {

     

    HTTP::respond 301 Location "http://www.site.com[HTTP::uri]"

     

    }

     

    site2.com {

     

    HTTP::respond 301 Location "http://www.site2.com[HTTP::uri]"

     

    }

     

    }

     

    }

     

     

    This is the most recent log entry for this issue:

     

     

    Tue May 17 04:25:41 CDT 2011 err local/tmm tmm[4712] 01220001 TCL error: redirect-mobile-site - Operation not supported. Multiple redirect/respond invocations not allowed (line 4) invoked from within "HTTP::redirect http://mobile.site.com/mobile/index.jsp "

     

     

    Thank you both for the quick response.

     

  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 17, 2011
    A runtime error like that is expected whenever more than one redirect is attempted on a single HTTP request.

     

     

    I would either combine the two iRules or set a variable in one iRule that is read by the second iRule to ensure only one iRule attempts to send a redirect. Or you could get a little fancier and use this type of logic:

     

     

    http://devcentral.f5.com/wiki/default.aspx/iRules/detect_prior_http_redirect_or_respond.html

     

     

    Aaron