iRule multiple redirect/respond invocations not allowed

Hi - I'm getting the following error:

 

 

Sep 9 07:09:42 local/tmm err tmm[5253]: 01220001:3: TCL error: ir_final_maintpage - Operation not supported. Multiple redirect/respond invocations not allowed (line 12) invoked from within "HTTP::respond 503 content "Hanley Wood, LLC - Maintenance Page

 

Here is my iRule:

 

when HTTP_REQUEST {

 

 

sets the timer to return client to host URL

 

set stime 10

 

 

Use the Host header value for the responses if it's set. If not, use the VIP address.

 

if {[string length [HTTP::host]]}{

 

set host [HTTP::host]

 

} else {

 

set host [IP::local_addr]

 

}

 

 

Check if the URI is /maintenance

 

switch [HTTP::uri] {

 

"/maintenance" {

 

 

Send an HTTP 503 response with a Javascript meta-refresh pointing to the host using a refresh time

 

HTTP::respond 503 content \

 

"Hanley Wood, LLC - Maintenance Page\

 

This webpage is currently unavailable; please check back again shortly.

 

" "Content-Type" "text/html"

 

return

 

}

 

}

 

If the pool_testLB is down, redirect to the maintenance page

 

if { [active_members [LB::server pool]] < 1 } {

 

HTTP::redirect "http://$host/maintenance"

 

return

 

}

 

}

 

 

So, I'm thinking about using the TCP::close option but am not sure where to put this. Any thoughts as to why these TCL errors keep showing up?

 

 

Thanks in advance.

 

 

-Albert.