Parse errors

when HTTP_REQUEST {
     logging for debug purposes. The following message in particular will place heavy load on the system. Remove for prod!
    log local0.info "processing request for [HTTP::host][HTTP::uri]"
    handle the */awdServer/* case.
if {[HTTP::uri] contains "/awdServer/"} {
if the Referer header does not exist this is a hard-bookmarked or malicious request and it will be logged and rejected.
     if { [HTTP::header exists "Referer"] } {
            if { [HTTP::header Referer equals ""] {
                log local0.warn "request for [HTTP::host][HTTP::uri] was dropped due to a null Referer header"
                 HTTP::respond 404 "Object not found."
                }
                set ref_query [URI::query [HTTP::header "Referer"]]
                set orig_query [HTTP::query]
                set servlet [URI::query ${ref_query} servlet]
                set awd_uri "${servlet}?${orig_query}&${ref_query}"
                log local0.info "rewriting URI from [HTTP::uri] to ${awd_uri}"
                HTTP::uri ${awd_uri}
            } else {
                log local0.warn "request for [HTTP::host][HTTP::uri] was dropped due to a missing Referer header"
                   HTTP::respond 404 "Object not found."
               }
        }
         handle the /awd/ case
        if { [HTTP::uri] starts_with "/awd/" {
            if the Referer header does not exist this is a hard-bookmarked or malicous request and it will be logged and rejected.
            if { HTTP::header exists "Referer" } {
                if { HTTP::header "Referer" equals "" } {
                    log local0.warn "request for [HTTP::host][HTTP::uri] was dropped due to a null Referer header"
                       HTTP::respond 404 "Object not found."
                }
                 grab the query string from the Referer header
                set ref_uri [URI::query [HTTP::header Referer]]
                 grab the Platform from the Referer header query string, if present
                if { [URI::query  $ref_uri platform] != "" } {
                    set ref_Platform "[URI::query $ref_uri platform]/"
                }
                 collect the CLIENT value from the Referer header query string, if present.
                if [ [URI::query $ref_uri client] != "" } {
                    set ref_Client [URI::query $ref_uri client]
                }
                 if there was a host value in the Referer query string, rewrite the Host header
                set orig_URI [HTTP::uri]
                if { [URI::query $ref_uri host] != "" } {
                    set ref_Host [URI::query $ref_uri host]
                    log local0.info "rewriting Host header [HTTP::host] to $ref_Host"
                    HTTP::header replace Host ${ref_Host}}
                }
                rewrite the URI to /PLATFORM/CLIENT/OriginalURI
                set awd_uri "/${ref_Platform}${ref_Client}${orig_URI}"
                log local0.info "rewriting [HTTP::uri] to ${awd_uri}"
                HTTP::uri ${awd_uri}
                 load-balance to the AWD Pool
                pool http_test
            } else {
                log local0.warn "request for [HTTP::host][HTTP::uri] was dropped due to a missing Referer header"
                   HTTP::respond 404 "Object not found."
               }
        }
    }
}
[code/]
Thanks!