irule to drop all non-allowed network from going to url

when HTTP_REQUEST {
 decode original URI.
set tmpUri [HTTP::uri]
set uri [URI::decode $tmpUri]

 repeat decoding until the decoded version equals the previous value.
while { $uri ne $tmpUri } {
set tmpUri $uri
set uri [URI::decode $tmpUri]
}
HTTP::uri $uri

if {[string tolower $uri] contains "hostinfo.aspx"} {

 check the Class to determine if it's not allowed
if { not [class match [IP::client_addr] equals allowed_networks] } {
log local0. "dropped connection"
reject
}
}
}