merging two irules into one efficient one.

I was wondering what I am doing wrong here...if you look at the results, I get a "double forward slash" after the redirect completes.

data group string parameter:

 

Data-group name:URI-datagroup

 

/abc/app1 /123/app100

/abc/app2 /123/app200

/abc/app3 /123/app300

/abc/app4 /123/app400

/abc/app5 /123/app500

Coming From: http://www.mysite.com/abc/app1

Redirected To:

when HTTP_REQUEST { 
       look for the second string in the data group 
      set newURI [findclass [HTTP::uri] $::URI-datagroup" "] 
      if { "" ne $newURI } { 
         HTTP::redirect "http://www.mysite.com/$newURI" 
    
   } else { 
HTTP::redirect "https://[HTTP::host][HTTP::uri]" 
   } 
}

You can avoid this by removing the forward slash between .com and $newURI:

 

 

HTTP::redirect "http://www.mysite.com$newURI"

 

 

Aaron

Thanks Aaron, I will give that a try...How about merging the two irules into one? Can you

 

give your expert help on the best way? I have the irules above.

 

 

Thanks again,

 

-DM

You have three main actions from the two iRules:

 

 

- rewrite host header from www.mysite.com to www.mynewsite.com

 

- redirect to https:// with the same host and URI the client requested

 

- redirect to a new URI based on the datagroup lookup

 

 

These are all mutually exclusive actions. When do you want these actions taken?

 

 

Aaron

Hi Aaron,

 

 

These are the actions required.

 

 

1- rewrite host header from www.mysite.com to www.mynewsite.com

 

2- redirect to a new URI based on the datagroup lookup

 

 

and if neither action 1 or 2 does not match, than default is action 3

 

3- redirect to https:// with the same host and URI the client requested

 

 

I have tried your suggestion and for some reason i sometime get the correct redirect, but some of the

 

datagroup string parameter does not work. I know I am using the correct syntax with I put this in the URL.

 

for example http://www.mysite.com/abc/app4 does not go to http://www.mysite.com/123/app400 as per the matching in the

 

data group and so on...

 

 

I have put back the "/$newURI" and it all works correctly, the only issue is the double slasshes as below.

 

 

 

 

Thanks Aaron!

 

 

-DM

 

 

 

So maybe something like this?

when HTTP_REQUEST {

    Check if the Host is www.mysite.com
   if { [string tolower [HTTP::host]] eq "www.mysite.com"} { 

       Rewrite the Host header to www.mynewsite.com
      HTTP::header replace Host "www.mynewsite.com" 

   } else {

       look for the second string in the data group and redirect 
      set newURI [findclass [HTTP::uri] $::newURI-Datagroup " "] 
      if { "" ne $newURI } { 
         HTTP::redirect "https://www.mynewsite.com$newURI" 
      } else {
         HTTP::redirect "https://[HTTP::host][HTTP::uri]" 
      }
   }
}

If you're having issues with the redirects, can you post an anonymized copy of the datagroup contents from the bigip.conf? Please also note a couple of URIs which do and don't work.

Aaron

 

 

Hi Aaron,

 

 

The merge works great, however, I am still getting the "double slashes" after the URI...So for example, http://www.mysite.com/abc/app1 gets correctly

 

redirected now to https://www.mysite.com//123/app100 -- however if you see there is a dboule slasshes after the "123". I have included the class from the bigip.conf files with the contents changed to match this thread.

 

 

This is driving me crazy...I think everything is done correctly, but something is not set correctly. If i take the "/" from the

 

class, it does not work at all...(change the string to "/abc/app1 123/app100" or "abc/app1 /123/app100")

 

 

Thanks again.

 

-DM

 

 

class newURI-Datagroup {

 

"/abc/app1 /123/app100"

 

"/abc/app2 /123/app200"

 

"/abc/app3 /123/app300"

 

"/abc/app4 /123/app400"

 

"/abc/app5 /123/app500"

 

Yeah, you'll need the leading forward slash on the second field of the datagroup entries. Can you log the mapping in the iRule and reply with the output from /var/log/ltm?

when HTTP_REQUEST {

    Check if the Host is www.mysite.com
   if { [string tolower [HTTP::host]] eq "www.mysite.com"} { 

       Rewrite the Host header to www.mynewsite.com
      HTTP::header replace Host "www.mynewsite.com" 

   } else {

       look for the second string in the data group and redirect 
      set newURI [findclass [HTTP::uri] $::newURI-Datagroup " "]
      if { "" ne $newURI } {
         log local0. "Mapped [HTTP::uri] to $newURI"
         HTTP::redirect "https://www.mynewsite.com$newURI" 
      } else {
         HTTP::redirect "https://[HTTP::host][HTTP::uri]" 
      }
   }
}

Aaron

Hi Aaron,

 

 

Below are the logs in the ltm. As you can see, I have tried it both with removing the "/' from "$neURI" (this does not work at all), to keeping "/$newURI". This at least redirects correctly but adds an extra "/" to www.mysite.com//123/app100" as an example.

 

 

May 23 18:01:33 tmm tmm[993]: Rule TEST_URI_Matching : Mapped /abc/app1 to /123/app100

 

May 23 18:01:35 tmm tmm[993]: Rule TEST_URI_Matching : Mapped /abc/app1 to /123/app100

 

 

 

What seems to be the problem? Can we accomplish this another way? This is killing me and we have a deadline to get this working..All the help from you

 

is greatly appreciated.

 

 

Thanks,

 

-DM

Can you email me and we can try to solve this a little quicker? My address is my first name at f5.com.

 

 

Thanks, Aaron