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JohnL_247646's avatar
JohnL_247646
Icon for Nimbostratus rankNimbostratus
Feb 03, 2016

Need help with Cisco ACE header rewrite to irule

I need some help doing this conversion from Cisco Ace to iRule. There is a header request that convert the users URL request from "hostA.companyA.com/whatever/comes/after" replace "host1.companyA.co...
devops
iRules
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Feb 03, 2016

Hi John,

an ACE action-list of...

action-list type modify 
    http login 
            header rewrite request Host header-value "hosta[.]companyA[.]com(.)" replace "host1.companyA.com:64592%1" 
            header rewrite response Location header-value "https://host1.companyA.com:64592/(.)" replace "https://hosta.companyA.com/%1"

... could be translated to ...

when HTTP_REQUEST {
    if { [string tolower [HTTP::host]] equals "hosta.companya.com" } then {
        HTTP::header replace Host "host1.companyA.com:64592"
    }
}
when HTTP_RESPONSE {
    if { [string tolower [HTTP::header value Location]] starts_with "https://host1.companya.com:64592" } then {
        HTTP::header replace Location "https://hosta.companyA.com[getfield [HTTP::header value Location] ":64592" 2]"
    }
}

Note: I'm using 

[string tolower]
to make it more robust. So keep an eyee on lower CASE formating for the equals and starts_with comparsions.

Cheers, Kai