Forum Discussion

Mr_Fribble's avatar
Mr_Fribble
Icon for Nimbostratus rankNimbostratus
Apr 15, 2021

passing URI /path to server when loadbalancing

Hi

 

user targets https://url.domain.org/uat/login but when it gets to the end server it's missing the /uat/login. The server requires other wise it pass back a 400 error. my setup/config is user -> F5 ssl offload -> Vserver -> pool -> node -> server:10444. How do i get F5 to pass the /uat/login to the server.

 

if I go to the server direct using https://servername:10444 I get 400 error https://servername:10444/uat/login it works

 

if i add the following Irule as a test

 

when HTTP_REQUEST {

 if { [HTTP::path] equals "/uat/login"} {

   HTTP::redirect "https://servername:10444/uat/login"

  }

 }

it works

 

but in the browser shows https://servername:10444/uat/login instead of https://url.domain.org/uat/login

 

thanks in advance

 

 

application delivery
iRules
LTM
  • Heino's avatar
    Heino
    Icon for Cirrus rankCirrus
    Apr 15, 2021

    HTTP::redirect is a shortcut for sending a 302 (Temporary Redirect) back to the client without involving the server that has the application. This is the reason why a different name is in the browser.

    when HTTP_REQUEST {
 if { [HTTP::path] equals "/uat/login"} {
   node servername 10444
  }
 }

    This will send the request on to the server.

    I don't really recommend node. I'd use a pool and the pool command

    pool servername_pool

  • spalande's avatar
    spalande
    Icon for Nacreous rankNacreous
    Apr 15, 2021

    BIGIP won't strip the URI part by default, unless there is iRule/ltm policy configured to do so.

    There is no explicit need of sending the URI part to the server. You would need to investigate who is stripping it. Is it F5 or proxy/server on the path?

    May be to start with, you can log in iRule to see if F5 is sending /uat/login to the server. Something like below 

    when HTTP_REQUEST{
log local0. "client --> F5:  [HTTP::method] https://[HTTP::host][HTTP::uri]"
}
 
when HTTP_REQUEST_SEND {
log local0. "F5 --> server:  [HTTP::method] https://[HTTP::host][HTTP::uri]"
}