URL rewrite..

Posted By IanAmos on 08/31/2007 7:00 AM

 

 

...

 

 

when HTTP_RESPONSE {
if { [HTTP::header exists "Location"] } {
if { [HTTP::header starts_with "http://dev.site.sub/siteminder"] } {
set remainder [substr [HTTP::header "Location"] 20]
HTTP::header replace "Location" "http://dev.site.net/siteminder/$remainder"
}
}
}

 

 

I get the following error in the logs:

 

 

http_process_state_prepend - Invalid action EV_EGRESS_DATA during ST_HTTP_PREPEND_HEADERS

 

 

...

 

 

 

 

I see a couple of issues with your code.

 

 

1. It seems that you have your second if statement incorrect. There is no "HTTP::header starts_with" command. I think you might have meant to compare the "Location" header with "http://dev.site.sub/siteminder".

 

 

2. Your substr command is pulling off everything past http://dev.site.sub/ so for a uri of "http://dev.site.sub/siteminder/foo/bar", remainder will be "siteminder/foo/bar" and your replacement header will be "http://dev.site.net/siteminder/siteminder/foo/bar" (notice the extra siteminder). If this is what you were intending, then ignore 2 but it kind of stuck out to me.

 

 

when HTTP_RESPONSE {
  if { [HTTP::header exists "Location"] } {
     1: compare Location header with uri
    if { [HTTP::header "Location"] starts_with "http://dev.site.sub/siteminder" } {
      set remainder [substr [HTTP::header "Location"] 20]
       2: removed "siteminder/" from replacement string
      HTTP::header replace "Location" "http://dev.site.net/$remainder"
    }
  }
}

 

 

Or, a more optimized version:

 

 

when HTTP_RESPONSE {
  if { [HTTP::header exists "Location"] } {
    if { [HTTP::header "Location"] starts_with "http://dev.site.sub/siteminder" } {
      HTTP::header replace "Location" "http://dev.site.net/[substr [HTTP::header "Location"] 20]"
    }
  }
}

 

 

See if that fixes things up...

 

 

-Joe