Forum Discussion

superd_88943's avatar
superd_88943
Icon for Nimbostratus rankNimbostratus
Dec 10, 2015

iRule re-direct & Exclusions

Hi all,   Im hoping some guidance on creation of an iRule to redirect some traffic, as follows:   If URL request contains http://www.domain1.com/ redirect requests to http://domain2.domain.com/...
application delivery
iRules
LTM
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Dec 10, 2015

Hi Superd,

use this technique if you want to exclude just "some" URIs (not more than 10)

when HTTP_REQUEST {
    if { [HTTP::host] eq "www.domain.de" } then {
        set low_uri [string tolower [HTTP::uri]]
        if { ( $low_uri equals "/researcharchive.asp?uk%20economy%20watch" ) or 
             ( $low_uri equals "/researcharchive.asp?uk%20economy%20presentations" ) or 
             ( $low_uri contains "/researcharchive2.asp" ) 
        } then {
            Do nothing
        } else {
            HTTP::redirect "http://domain2.domain.com/economic-research-unit"
        }
    }
}

Use this technique if you want to exclude a bunch of URIs (more than 10 but not more than 50)

when HTTP_REQUEST {
    if { [HTTP::host] eq "www.domain.de" } then {
        switch -glob -- [string tolower [HTTP::uri]] "/somedummypath/" - \ 
            "/researcharchive.asp?uk%20economy%20watch" - \
            "/researcharchive.asp?uk%20economy%20watch2" - \
            "/researcharchive.asp?uk%20economy%20watch3" - \
            "/researcharchive.asp?uk%20economy%20watch4" - \
            "/researcharchive.asp?uk%20economy%20presentations" - \
            "/researcharchive.asp?uk%20economy%20summary*" - \
            "/researcharchive2.asp?*" - \
            "/some_wildcard_path/*" - \
            "/some_explicit_path/" - \
            "/favicon.ico" {

             Do nothing

        } default {
            HTTP::redirect "http://domain2.domain.com/economic-research-unit"
        }
    }
}

Use this technique if you want to exclude a lot of URIs (more than 50)

Remark: You have to configure the "EXEMPTED_URIs" in a seperated Datagroup. See https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-system-irules-concepts-11-6-0/6.html for further information.

when HTTP_REQUEST {
    if { [HTTP::host] eq "www.domain.de" } then {
        if { [class match [string tolower [HTTP::uri]] starts_with EXEMPTED_URIs ] } then {
             Do nothing
        } else {
            HTTP::redirect "http://domain2.domain.com/economic-research-unit"
        }
    }
}

Cheers, Kai