Hyperlink blocking

Hi,

You can try something like that (I don't tested It, maybe you will finetune it):

when HTTP_REQUEST {

set collect 0

if { [HTTP::method] eq "POST" } {
      if { [HTTP::header Content-Length] ne "" and [HTTP::header value Content-Length] <= 1048576 } {
         set content_length [HTTP::header value Content-Length]
      } else {
         set content_length 1048576
      }
      if { $content_length > 0 } {
         HTTP::collect $content_length
         set collect 1
      }
   }
}
when HTTP_REQUEST_DATA {

if {$collect} {
    set payload [HTTP::payload]
    log local0. $payload

    if {$payload contains "http://" || $payload contains "https://"} {
        reject
    }
}  
}

And of course you can optimise this irule by setting your condition more precisely according to your needs.

Regards