Hi I need an irule to redirect from shortname: https://example to https://example.com/test I used below irule , however shortname doesn't work, but if I type fully qualified domain works just fine. when HTTP_REQUEST { if { [string tolower [HTTP::host]] eq "/" } { HTTP::redirect "https://example.com/test" } } Thx , all

so to be more specific if user type: https://example needs to be resolve to https://example.com/test in the address bar for the application to work.

Try this: when HTTP_REQUEST { if { [string tolower [HTTP::host]] eq "example" } { HTTP::redirect "https://example.com/test" } }

I try that before not working, I am wondering if that needs to be done on the server site?

If the exact HTTP host they are trying to access is "example", then the iRule will work. This assumes that you are terminating SSL on this virtual server and have an HTTP profile applied to the virtual server. Otherwise, you won't have the visibility into the layer 7 HTTP data in order to do the comparison.

we have two hosts behind 443 VIP with SSL termination , requirement is if user type https://example must to resolved to FQN--> https://example.com/test. if I type https://example.com it will redirect fine to /test. is just short name ( example) doesn't work. sorry for long explanation.

irule redirect or rewrite

15 Replies

KJ_50941
Nimbostratus
Jun 26, 2014
so to be more specific if user type: https://example needs to be resolve to https://example.com/test in the address bar for the application to work.
Cory_50405
Noctilucent
Jun 26, 2014
Try this:

when HTTP_REQUEST { if { [string tolower [HTTP::host]] eq "example" } { HTTP::redirect "https://example.com/test" } }
- KJ_50941
  Nimbostratus
  Jun 26, 2014
  I try that before not working, I am wondering if that needs to be done on the server site?
- Cory_50405
  Noctilucent
  Jun 26, 2014
  If the exact HTTP host they are trying to access is "example", then the iRule will work. This assumes that you are terminating SSL on this virtual server and have an HTTP profile applied to the virtual server. Otherwise, you won't have the visibility into the layer 7 HTTP data in order to do the comparison.
- KJ_50941
  Nimbostratus
  Jun 26, 2014
  we have two hosts behind 443 VIP with SSL termination , requirement is if user type https://example must to resolved to FQN--> https://example.com/test. if I type https://example.com it will redirect fine to /test. is just short name ( example) doesn't work. sorry for long explanation.
Cory_50405
Noctilucent
Jun 26, 2014
It sounds like DNS is resolving as intended. Are you certain your iRule is matching on 'example'? Try putting a logging statement into the iRule and see if anything shows up in /var/log/ltm:

when HTTP_REQUEST { if { [string tolower [HTTP::host]] eq "example" } { log local0. "Matched example host, redirecting" HTTP::redirect "https://example.com/test" } }
- KJ_50941
  Nimbostratus
  Jun 30, 2014
  I put exact irule for logging, however I am not seeing it when accessing F5 VIP.
- KJ_50941
  Nimbostratus
  Jun 30, 2014
  I did tecpdump , and I can only see it when I am using FQDN in my browser.nothing for short name. what does that mean? tcpdump -ni 0.0 host 192.168.110 and 172.16.1.10 192.168.1.10 is F5 vip and 172.16.1.10 is my pc. Thx
- Cory_50405
  Noctilucent
  Jun 30, 2014
  So then is 'example' getting CNAME'd to example.com? Could be that this is the case, and when the HTTP request arrives at your LTM, the host header specifies example.com and the iRule won't match.
nitass
Employee
Jul 01, 2014
can you try wireshark on the laptop?