Problem with TCL in payload check

Old code was too complicated 😉

New - works perfectly (witch extra logging).

I was made two classes with urls and kod_swd.

when HTTP_REQUEST {
    if { [HTTP::header exists "Content-Length"] && [HTTP::header "Content-Length"] < 1048577 } {
        set content_length [HTTP::header "Content-Length"]
        } else {
        set content_length 1048576
        }
    HTTP::collect $content_length
    set collected 0
    set lurl [string tolower [HTTP::uri]]
    set usrip [IP::client_addr]
    
    log local0.warn "REQ $usrip ; $lurl"
}

when HTTP_REQUEST_DATA {   
    if { ([IP::addr 10.112.0.0/16 equals [IP::client_addr]]) and ([class match $lurl equals "ws_login_url"]) } {
        set kod_swd [substr [findstr [HTTP::payload] "ctl00%24ContentPlaceHolder1%24txtKodSwiadcz" 44] 0 "&ctl00%24ContentPlaceHolder1%24txtId"]
        set user [substr [findstr [HTTP::payload] "ctl00%24ContentPlaceHolder1%24txtId" 36] 0 "&ctl00%24ContentPlaceHolder1%24txtSinakeValue"]
        log local0.warn "REQ_DATA $usrip ; $lurl ; $kod_swd ; $user"
        if { [class match $kod_swd eq "ws_login_swd"] } {
            HTTP::release
            log local0.warn "REQ_DATA - jest ok $usrip ; $lurl ; $kod_swd ; $user"

        } else {
            HTTP::redirect "https://[HTTP::host]/clo_ws/loginservice.aspx"
            log local0.warn "REQ_DATA - redirect $usrip ; $lurl ; $kod_swd ; $user"
        }
    }
    
}

Maybe it helps somebody.