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Forum Discussion

tatmotiv's avatar
tatmotiv
Icon for Cirrostratus rankCirrostratus
Feb 26, 2016

pool-member specific rewrite of http URI

Hi everybody, I have the following requirement: There is a pool consisting of two members (same IP, different port). HTTP requests coming in to the according virtual must be rewritten as follows:...
application delivery
iRules
LTM
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Feb 26, 2016

Hi Tatmotiv,

you may try to use the HTTP_REQUEST_SEND event. This event will trigger after LB_SELECTED has choosen the member and also on every subsequent HTTP request...

 

when HTTP_REQUEST_SEND {
    clientside {
        if { [HTTP::uri] starts_with "/abc/" } {
            if { [LB::server port] equals 8001 } {
                HTTP::uri "/def[string range [HTTP::uri] 4 end]"
            } 
            elseif { [LB::server port] equals 8002 } {
                HTTP::uri "/ghi[string range [HTTP::uri] 4 end]"
            }
        }
    }
}

 

Note: I've changed your code to use [string range] command in combination with substitution. Its much more stable and also performant to just cut/add the leading portion that needs to become replaced. You may have to change the 4 to the length of the string that needs to become cutted.

Cheers, Kai