Forum Discussion
Al_Faller_1969
Nimbostratus
Nimbostratusdropping HTTP requests to "other" URIs
Hi All -
I am trying to make an iRule that drops a request that is not destined for any of 4 different directories. Here is what I have so far, which hasn't been working:
when HTTP_REQUEST {
if { not [HTTP::uri] starts_with "/dir1" and
not [HTTP::uri] starts_with "/dir2" and
not [HTTP::uri] starts_with "/dir3" and
not [HTTP::uri] starts_with "/dir4"} {
drop
}
}
What am I doing wrong? Thanks!
Al
- JRahm
Admin
Change those and's to or's, or you could try this:when RULE_INIT { array set ::valid_dir { /dir1 /dir2 /dir3 /dir4 } } when HTTP_REQUEST { if { ![matchclass [string tolower [HTTP::uri]] starts_with $::valid_dir] } { discard } } - JRahmUse the rule I updated above in my post, I forgot the $, and I updated another syntax error (my specialty!) as well.
Al_Faller_1969The UI accepts the code, but doesn't like it behind the scene. I still get the following error in the traffic manager log:
TCL error: Rule url-protection - can't read "::valid_dir": variable is array while executing "matchclass [string tolower [HTTP::uri]] starts_with $::valid_dir"
Thanks for your help.- JRahmTry a class instead. I added a log string to check to make sure the class is populated.
class valid_dir { "/dir1" "/dir2" "/dir3" "/dir4" } when HTTP_REQUEST { log "Valid directories: $::valid_dir" if { not [matchclass [string tolower [HTTP::uri]] starts_with $::valid_dir] } { discard } } - Al_Faller_1969Bingo!
Thanks for the help. 
praveen_73358Hi,
Could someone please explain the meaning or concept of "$::" after keyword starts_with.
Thanks,
Praveen Kumar- JRahmsure, in that context it's referencing a datagroup, in later versions of 9.4 and all 10.x versions, you should remove the $:: as it demotes from CMP. The $:: can also reference a global variable set in RULE_INIT event.
- Chris_Miller
Altostratus
Posted By Jason Rahm on 02/09/2011 08:09 AM
sure, in that context it's referencing a datagroup, in later versions of 9.4 and all 10.x versions, you should remove the $:: as it demotes from CMP. The $:: can also reference a global variable set in RULE_INIT event.
Has anyone done a sweep of wiki examples that specify $:: and changed them? - JRahmGave up the thought of ever catching you!
- praveen_73358Thanks a lot.
