Irule error-Command not valid in the current scope

Question

My irule is:&nbsp;
rule shop_lkqcorp_cache_expiry {&nbsp;
when HTTP_REQUEST {&nbsp;
if {[HTTP::method] eq "GET" and [HTTP::uri] eq "/"}{
set expire_content_timeout 300
} else {
set expire_content_timeout [findclass [string tolower [string range [HTTP::path] [string last . [HTTP::path]] end]] static_cache_24hrs " "]
}
}&nbsp;
when HTTP_RESPONSE {
if { $expire_content_timeout ne "" } {
HTTP::header replace "Cache-Control" "max-age=$expire_content_timeout, public"
HTTP::header replace "Expires" "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]"
} else {&nbsp;
HTTP::header replace "Cache-Control" "private"
HTTP::header replace Expires {-1}
}
}
} &nbsp;
My data-group:&nbsp;
ltm data-group internal static_cache_24hrs {
    records {
        .bmp {
            data 2678400
        }
        .css {
            data 2678400
        }
        .gif {
            data 2678400
        }
        .ico {
            data 2678400
        }
        .jpeg {
            data 2678400
        }
        .jpg {
            data 2678400
        }
        .js {
            data 2678400
        }
        .pdf {
            data 2678400
        }
        .png {
            data 2678400
        }
        .swf {
            data 2678400
        }
    }
    type string
}&nbsp;
I get an error when I put in the iRule:
01070151:3: Rule [/Common/shop_lkqcorp_cache_expiry] error: /Common/shop_lkqcorp_cache_expiry:21: error: [command is not valid in the current scope][}]&nbsp;
Can someone help me figure where it is wrong? I am still learning to write iRules and I had tweaked an existing iRule from the Devcentral. Any help is much appreciated!&nbsp;

ekaleido_26616 · Answer

This maybe? But I think you'll want to do your "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" after the if, set it as a variable and then place the variable inside the HTTP::header replace.
    when HTTP_REQUEST {
            if {[HTTP::method] eq "GET" and [HTTP::uri] eq "/"}{ 
                            set expire_content_timeout 300 
            } else { 
                            set expire_content_timeout [findclass [string tolower [string range [HTTP::path] [string last . [HTTP::path]] end]] static_cache_24hrs " "] 
            } 
    }

when HTTP_RESPONSE { 
            if { $expire_content_timeout ne "" } { 
                            HTTP::header replace "Cache-Control" "max-age=$expire_content_timeout, public" HTTP::header replace "Expires" "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" 
            } else {
                            HTTP::header replace "Cache-Control" "private"
                            HTTP::header replace "Expires" "-1"
            } 
    }

ekaleido · Answer

This maybe? But I think you'll want to do your "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" after the if, set it as a variable and then place the variable inside the HTTP::header replace.
    when HTTP_REQUEST {
            if {[HTTP::method] eq "GET" and [HTTP::uri] eq "/"}{ 
                            set expire_content_timeout 300 
            } else { 
                            set expire_content_timeout [findclass [string tolower [string range [HTTP::path] [string last . [HTTP::path]] end]] static_cache_24hrs " "] 
            } 
    }

when HTTP_RESPONSE { 
            if { $expire_content_timeout ne "" } { 
                            HTTP::header replace "Cache-Control" "max-age=$expire_content_timeout, public" HTTP::header replace "Expires" "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" 
            } else {
                            HTTP::header replace "Cache-Control" "private"
                            HTTP::header replace "Expires" "-1"
            } 
    }

sai_131331 · Answer

This one didn't work too. &nbsp;
01070151:3: Rule [/Common/shop_lkqcorp_cache_expiry] error: /Common/shop_lkqcorp_cache_expiry:11: error: [wrong  args][HTTP::header replace "Cache-Control" "max-age=$expire_content_timeout, public" HTTP::header replace "Expires" "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" &nbsp;

sai_131331 · Answer

This one didn't work too. &nbsp;
01070151:3: Rule [/Common/shop_lkqcorp_cache_expiry] error: /Common/shop_lkqcorp_cache_expiry:11: error: [wrong  args][HTTP::header replace "Cache-Control" "max-age=$expire_content_timeout, public" HTTP::header replace "Expires" "[clock format [expr ([clock seconds]+$expire_content_timeout)] -format "%a, %d %h %Y %T GMT" -gmt true]" &nbsp;

sai_131331 · Answer

My objective of writing this iRule is that I want to set an Expiry date to static content that needs to be cached by the client's browser. &nbsp;

Forum Discussion

Irule error-Command not valid in the current scope

7 Replies

Recent Discussions

vulnerabilities (CVE-2020-36363), CVE-2016-0736,CVE-2019-6593-FOR VERSION BIGIP LTM-16.1.4

Chrome V 124+ on MacOS - Virtual Server Access Issue

Port Group on F5OS network setting

Advise on setting up IRULE

F5 iRule to replace host to path

Related Content

Simple Sideband - iRule sideband the easy way

irule

Avoiding Common iRules Security Pitfalls

GSLB Split DNS by iRule

Live Coding with iRules - Heatmaps!