Rewrite URL based on selected node for load-balancing

Thanks Kevin for your help and your tips. I really appreciate.

In fact I don't really need to know the number of the node, I can directly use the IP address.

Basically I want to rewrite the Host header depending on the node selected for load-balancing the traffic.

What do you think of this iRule:

when HTTP_REQUEST_SEND {

 Need to force the host header replacement and HTTP:: commands into the clientside context
 as the HTTP_REQUEST_SEND event is in the serverside context
clientside {

switch -glob [LB::server addr] {

"1.1.1.1" {
HTTP::header replace Host "newHostHeader01"
}

"1.1.1.2" {
HTTP::header replace Host "newHostHeader02"
}

etc...

}

}

}
 

Do you think a more proper way to do that?

Thanks in advance for your valuable feedback.