Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

VDaemon's avatar
VDaemon
Icon for Nimbostratus rankNimbostratus
Dec 06, 2019

IRule to display users "the mobile app is outdated. Please update using the links below: Android: Click here, IOS: Click Here"

Dear Community, Looking for some help. We have a mobile app whose URL is hosted on F5. I want to write an irule that displays the following message to the users. "The mobile app is outdated. Plea...
application delivery
big-ip
irules
jaikumar_f5's avatar
jaikumar_f5
Icon for Noctilucent rankNoctilucent
Dec 11, 2019

Hi  

You should have to escape the " characters for that, else you'll see the message content alone.

The below should help.

when HTTP_REQUEST {
        if { SOMECONDITION } {
                  HTTP::respond 200 content "<html><head><title>Maintenance Page</title></head><body>The mobile app is outdated. Please update using the links below: Android: Click <a href=\"https://play.google.com/store/\">here</a>, IOS: Click <a href=\"https://play.google.com/store/\">here</a></body></html>"
           }
}

Notice - href=\" & \">here, hope this helps. I have tested too.

Please mark the thread as solved it this solves your requirement.

Edit: Forgot to tell, there is Ifile method as well. In case you want to explore that.