Forum Discussion
Ted_Kircos_1126
Nimbostratus
NimbostratusNeed help - Before i pull my hair out!!!
Getting the following trying to add the irule below... Im stumped... Anyone see whats wrong or how to fix it?
line 8: [undefined procedure: http://] ["http://" + [HTTP::header "AP_LOCHOST"]]
line 9: [wrong args] [set replace "https://" + [HTTP::header "AP_LOCHOST"];]
when HTTP_RESPONSE {
if { [HTTP::status] starts_with "3" } {
set location [HTTP::header "Location"];
if { $location != "" } {
if {[HTTP::header "AP_NO_SSL_REDIR"] == "" } {
set find ["http://" + [HTTP::header "AP_LOCHOST"]];
set replace "https://" + [HTTP::header "AP_LOCHOST"];
regsub $find $location $replace newlocation ;
HTTP::header replace $location" newlocation;
}
}
return;
}
}
hoolioCirrostratus
Sorry... the format for string map is:
set my_new_string [string map {$find1 $replace1 $find2 $replace2} $original_string]
You can specify just one pair of find/replace strings if you want.
If you wanted to minimize the steps, you could use something like this:when HTTP_RESPONSE { if { [HTTP::status] starts_with "3" and [HTTP::header "Location"] != "" and [HTTP::header "AP_NO_SSL_REDIR"] == ""} { HTTP::header "Location" [string map { [concat "http://"[HTTP::header "AP_LOCHOST"]] [concat "https://"[HTTP::header "AP_LOCHOST"] } HTTP::header "Location" ] } }
Note that I didn't actually test this, but I think it matches the gist of what you're trying to do.
If you run into problems, try updating the longer version and check the logging in /var/log/ltm to see where it's failing.
Aaron
Ted_Kircos_1126i am getting the following in the logs
Nov 28 13:44:23 tmm tmm[710]: Rule dev1.clarica.com_https-irule : Status: 302
Nov 28 13:44:23 tmm tmm[710]: Rule dev1.clarica.com_https-irule : location: https://dev1.clarica.com/bcheck.html?redir=/e/signin/index.asp
Nov 28 13:44:23 tmm tmm[710]: Rule dev1.clarica.com_https-irule : find: http://
Nov 28 13:44:23 tmm tmm[710]: Rule dev1.clarica.com_https-irule : replace: https://
Nov 28 13:44:23 tmm tmm[710]: 01220001:3: TCL error: Rule dev1.clarica.com_https-irule - can't read "original_string": no such variable while executing "string map {$find1 $replace1 $find2 $replace2} $original_string"
with the follow irule
when HTTP_RESPONSE {
if { [HTTP::status] starts_with "3" } {
log local0. "Status: [HTTP::status]"
set location [HTTP::header "Location"]
log local0. "location: $location"
if { $location != "" } {
if {[HTTP::header "AP_NO_SSL_REDIR"] == "" } {
set find [concat "http://" [HTTP::header "AP_LOCHOST"]]
log local0. "find: $find"
set replace [concat "https://" [HTTP::header "AP_LOCHOST"]]
log local0. "replace: $replace"
set my_new_string [string map {$find1 $replace1 $find2 $replace2} $original_string]
log local0. "newlocation: $newlocation"
HTTP::header replace $location $newlocation
log local0. "replaced location header"
}
}
}
}
Chad_Roberts_21I believe hoolio meant for the following to be a format example, not an actual line in your code.
set my_new_string [string map {$find1 $replace1 $find2 $replace2} $original_string]
In other words, just change the "set newlocation" line as it was originally typed (or, rather, in your current rule replace the line above with the line below) to:
set newlocation [string map {$find $replace} $location]- Did you ever get this to work...?
Using that approach, I'm finding that the variables within the map {} are not expanding.
thanks!
/deb 
Andrew_AbplanalI have tried a number of options but I cannot get variables to work in the mapping section....
Has anyone solved this.... or knows how to make it work.- Ted_Kircos_1126Here is my working copY!
when HTTP_RESPONSE {
if { [HTTP::status] starts_with "3" } {
set location [HTTP::header "Location"]
if {$location != "" } {
if {[HTTP::header "AP_NO_SSL_REDIR"] == "" } {
set find "http://"
append find [HTTP::header "AP_LOCHOST"]
set replace "https://"
append replace [HTTP::header "AP_LOCHOST"]
set newlocation [string map [list $find $replace] $location]
HTTP::header replace "Location" $newlocation
}
}
}
} - Andrew_AbplanalThanks for the last piece of the puzzle.... it was the "list" function that solved my problem.
if {[HTTP::is_redirect]}{
set find ":25620/"
set replace "/"
set location [HTTP::header value Location]
HTTP::header replace Location [string map [ list $find $replace] $location]
log [string map [ list $find $replace] $location]
log [string map { ":25620/" "/"} $location]
}
}
Jan 30 10:23:51 tmm tmm[1385]: 01220002:6: Rule lng-ln-cert-certlexisgw.lexis.com-http : http://certlexisgw.lexis.com/hbeat/
Jan 30 10:23:51 tmm tmm[1385]: 01220002:6: Rule lng-ln-cert-certlexisgw.lexis.com-http : http://certlexisgw.lexis.com/hbeat/ - niiice!
neat trick, thanks guys!
/deb
