iRule to detect browser and display warning message

OK for some reason the iRule is not properly displayed, so here's a stripped down version without the HTML code

when HTTP_REQUEST {
    if { not ( [HTTP::cookie exists WRONGBROWSER] ) AND [class match [HTTP::header "User-Agent"] contains "Mozilla"]} {            set expires [clock format [clock seconds] -format "%A, %d-%b-%Y 20:00:00"]
        HTTP::respond 200 content "
            HTML
            click here to continue (with a link to https://whatever_he-was_trying_access
            /HTML
        " "Set-Cookie" "WRONGBROWSER=1; path=/; expires=$expires"
    }
}

I'd recommend converting the User-Agent to lower case before doing the comparison:

[string tolower [HTTP::header "User-Agent"]]

However, the bigger problem I see is that virtually all browsers (including IE) feature the string "Mozilla" in the User-Agent header... (see http://www.useragentstring.com/pages/Internet%20Explorer/)

Hey

Thanks for the information.

I used "mozilla" because I did not know what else to use. Basically what I want to do is display that page to users using Firefox. Which user agent should I use then?

If you search for the string "firefox" you should be fine. Here's the list.

OK so assuming my syntax is correct I'd have something like the iRule below. How can I capture the address entered to the user so I can redirect him to that address once he click "Continue" on the warning page?

when HTTP_REQUEST {
    if { not ( [HTTP::cookie exists WRONGBROWSER] ) AND [class match [string tolower[HTTP::header "User-Agent"]] contains "firefox"]} {
        set expires [clock format [clock seconds] -format "%A, %d-%b-%Y 20:00:00"]
        HTTP::respond 200 content "
            HTML
            click here to continue (with a link to https://whatever_he-was_trying_access
            /HTML
        " "Set-Cookie" "WRONGBROWSER=1; path=/; expires=$expires"
    }
}

    HTTP::respond 200 content "
        
        
        
        
        
"

My apologies for the formatting; for some reason the editor keeps messing it up. :-(

Hi,

Could you post the updated iRule for this Redirect. I am working for displaying the compatibility for TLS 1.2 instead of TLS 1.0/TLS 1.1

Here is my iRule but. I don't want to direct to some other page, i want to display same warning to update the user about TLS and redirect to the same URI.

when RULE_INIT { set static::refresh_time 15 set static::unsupported_browser_page { System Notification http://www.xxx.com">

You are using an unsupported browser. You must use internet explorer 10.0 or higher

Please upgrade or install a supported browser.

You will be redirected to http://www.xxx.com

Wait $static::refresh_time seconds to continue, or click http://www.xxx.com\">here to continue.

You are using an browser that does not support TLS version 1.1 or 1.2

please check the security settings of your browser and enable TLS version 1.1 or 1.2

You will be redirected to http://www.xxx.com

Wait $static::refresh_time seconds to continue, or click http://www.xxx.com\">here to continue.