irule based redirection issue

Hi mate,

It's normal, for every request with Accept-Language FR, LTM will send a redirect. It's a loop. So what ever the URI, if browser is french, you send a redirect.

You have to modify your HTTP_REQUEST event. Let me know what you are expecting with this irule.

Hi Matthieu, thanks for the response and You are right, redirection is normal behavior but i am not sure why it is continuously redirecting if i enable debug in explorer to test language response i see 100+ redirections and at the end request stops with page not found means client browser is receiving ( Response HTTP/1.0 302 Found , Location https://www.mylocalnet.us/fr/pages/default.aspx , Server BigIP ) constantly in response instead of any contents etc while site is operational and working fine when not using irule.

Yes, step by step 1. browser sends GET /something with language FR 2. BIGIP sends redirect to https://www.mylocalnet.us/fr/pages/default.aspx 3. browser sends GET https://www.mylocalnet.us/fr/pages/default.aspx with language FR 4. BIGIP sends redirect to https://www.mylocalnet.us/fr/pages/default.aspx --> LOOP 5. LOOP 6. LOOP

Are you seeing that in the browser ?

Very right dear, what you have mentioned is correct , in **Response** i am getting (Location - https://www.mylocalnet.us/fr/pages/default.aspx ) and in **Request** i get ( Request - GET /fr/pages/default.aspx HTTP/1.1 ) and it keeps going on.

Make sense. Now let me know what your are expecting from this irule and I will try to find a solution. You can't use JUST the language to make a redirection. You must combine LANGUAGE and something unique like URI.

I mean, if browser if FR and user get / --> redirect to blablalbla.

correct so if client has preferred language set to FR and user types in browser mylocalnet.us then LTM will detect this language and send him FR home page URL https://www.mylocalnet.us/fr/pages/default.aspx and if FR not found will send him default English home page URL https://www.mylocalnet.us/en/pages/default.aspx.

So in next request when client Requests Get /fr/pages/default.aspx or en/pages/default.aspx then ltm will contact server and delivers the contents to the browser.

Hi JeffRay,

Please keep in mind that everytime your client sends a request the Irule is executed. So if the client sends

GET https://www.mylocalnet.us/fr/pages/default.aspx

Accept-Language FR

He'll be redirected to the same url : https://www.mylocalnet.us/fr/pages/default.aspx . causing the looping

One solution to avoid the looping could be to modify your condition inorder to check if the client isn't already going to /fr/* in which case not redirecting him. something like this

 elseif { !([HTTP::path] starts_with "/fr") && [HTTP::header "Accept-Language"] starts_with "fr"  )

hope it'll help

Karim

Jeff,

As Karim said, combine /fr uri and language FR. If URI = /fr and language = FR --> do nothing, that means redirection is already done.

If URI not equal to /fr and language = FR --> redirect.

I have now changed and tried this and with english or french any language when selected, loop has stopped as you expected that is good but it terminates on first request i.e client is redirected to http(s)://(www).mylocalnet.us and no URI is added.

Browser Debug output:

http://mylocalnet.us/           HTTP     GET    301         
https://www.mylocalnet.us/  HTTPS       (Aborted)

when HTTP_REQUEST {
    if { [string tolower [HTTP::path]] equals "/atd/atd.xml" } {
                HTTP::respond 301 "Location" "https://atd.mylocalnet.us/atd/atd.xml"

} elseif { ![HTTP::path] starts_with "/fr" && !([HTTP::header "Accept-Language"] starts_with "fr") } {
                HTTP::redirect "https://www.mylocalnet.us/fr/pages/default.aspx"

       } elseif { [string tolower [HTTP::path]] equals "/" } {
                HTTP::redirect "https://www.mylocalnet.us/en/pages/default.aspx"
    }
    }