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Yanik's avatar
Yanik
Icon for Altocumulus rankAltocumulus
May 06, 2021

Redirect from WWW iRule

Hello all !

How can I redirect traffic from "www.example.com" to "https://example.com", I don't care if it's an iRule or policy.

I tried iRules, policies, and nothing worked, all other redirects I created work fine.

 

Thanks, Yan

application delivery
BIG-IP
iRules
LTM
  • Enes_Afsin_Al's avatar
    Enes_Afsin_Al
    Icon for MVP rankMVP
    May 06, 2021

    Hi Yan,

    1. string map

    when HTTP_REQUEST {
	if { [HTTP::host] starts_with "www." } {
		HTTP::redirect https://[string map {www. ""} [HTTP::host]][HTTP::uri]
	}
}

    2. string range

    when HTTP_REQUEST {
	if { [HTTP::host] starts_with "www." } {
		HTTP::redirect https://[string range [HTTP::host] 4 end][HTTP::uri]
	}
}

    3. getfield

    when HTTP_REQUEST {
	if { [HTTP::host] starts_with "www." } {
		HTTP::redirect https://[getfield [HTTP::host] "www." 2][HTTP::uri]
	}
}

    4. substr

    when HTTP_REQUEST {
	if { [HTTP::host] starts_with "www." } {
		HTTP::redirect https://[substr [HTTP::host] 4][HTTP::uri]
	}
}
  • Yanik's avatar
    Yanik
    Icon for Altocumulus rankAltocumulus
    May 06, 2021

    Thanks for the answer, but no one of the iRules doesn't work.

    When I log the iRule I see "SSL Handshake failed for TCP", so may be I have some other issue and not iRule, so I will investigate it.

     

    • AlexBCT's avatar
      AlexBCT
      Icon for Cumulonimbus rankCumulonimbus
      May 06, 2021

      Hi Yanik,

       

      That sounds like a different issue indeed. You may want to confirm that you have the iRule attached to the port 80 virtual server, rather than the 443 virtual server. Also, check that the port 80 virtual server doesn't have any SSL profiles on it.

      Or if it is supposed to be redirected from https://www.example.com to https://example.com, then you DO need an SSL profile on the virtual server, so that the iRule can read the unencrypted request.

       

      Hope this helps.