Forum Discussion
Sayan_81841
Nimbostratus
NimbostratusSwitch statement not working
Hi,
I wrote an iRule and the content is given below. But this is not working as expected.
when HTTP_REQUEST {
if { [HTTP::host] starts_with "abc.com" } {
set var1 "/abc/xyz"
set var2 "/xyz/abc"
switch -glob [HTTP::uri] {
$var1 {
HTTP::redirect "http://www.google.com"
}
$var2 {
HTTP::redirect "http://www.yahoo.com"
}
concat $var1 "mail" {
HTTP::redirect "http://mail.yahoo.co.uk"
}
default {
}
}
}
}
The compilation is successful and no syntax error but the redirections are not happening and always showing "Page not found". But when I converted the above iRule to if elseif statement it started working.
Please let me know what is the issue with the iRule.
hooleylistCirrostratus
Hi Sayan,
The curly braces at the beginning and end of the switch statement prevent variable expansion. See this thread for an alternative:
http://stackoverflow.com/questions/3261515/tcl-switch-glob-does-not-match-with-variablewhen RULE_INIT { set var1 "test1" set var2 "test2" switch -glob -- "test1mail" $var1 { log local0. "matched $var1" } $var2 { log local0. "matched $var2" } "${var1}mail" { log local0. "matched ${var1}mail" } default { log local0. "no match" } }
: matched test1mail
Aaron- Yes, I came into that a while back when writing a tech tip. You can omit the curly braces and use a line continuation character to make the switch statement a single line. Otherwise, I haven't found any workaround to this.
-Joe
