HTTP rewrite for lots of URLs

Check out the following thread: Click here http://devcentral.f5.com/Default.aspx?tabid=28&forumid=5&postid=2078&view=topic

 

 

-Brian

Thanks Brian and Joe. Great info! I'll give that a try and let you know how it works out.

 

 

- AJ

This is a follow-on to my previous question...

 

 

I did used the following iRules to do the HTTP redirect and it worked.

 

 

when HTTP_REQUEST {

 

set debug "1"

 

set http_host [HTTP::host]

 

if {[string equal -nocase $http_host "www.foo.com"]} {HTTP::redirect "http://192.168.1.1/foo[HTTP::uri]"; if $debug {log local0. "redirect --- http://192.168.1.1/foo[HTTP::uri]"}}

 

}

 

 

The problem is that the result is as follows:

 

 

http://www.foo.com/ ---> http://192.168.1.1/foo

 

 

But I really want the following:

 

 

http://www.foo.com/ ---> http://www.foo.com/foo

 

 

Any help or pointers would be greatly appreciated.

 

 

Cheers, AJ

 

 

 

All you need to do is replace the 192.168.1.1 with the host name. You'll also need to put in a check for the uri to avoid an infinite loop.

 

 

Ignoring what we've discussed in the previous posts, you could do the mapping you requested with this code

 

 

when HTTP_REQUEST {
  if { [string equal -nocase [HTTP::host] "www.foo.com"] and
     not ([string tolower [HTTP::uri]] starts_with "/foo") } {
     HTTP::redirect "http://[HTTP::host]/foo[HTTP::uri]"
  }
}

 

 

I added in the "not starts with "/foo" to avoid the infinite loop.

 

 

http://www.foo.com -> http://www.foo.com/foo

 

http://www.foo.com/foo -> http://www.foo.com/foo/foo

 

http://www.foo.com/foo/foo -> http://www.foo.com/foo/foo/foo

 

...

 

 

-Joe

Thanks a lot Joe! - AJ

After reading these posts we started playing around with the idea of moving or redirector to the BigIP. Two problem pop up, one which should not be a big problem in the future for us is there a way to do a nocase on a class. The second if is or business people have put + signs in there url is there a way I can put the + sign in the class? Thanks

 

 

Below is the iRule if it will help

 

 

 

when HTTP_REQUEST {

 

log start

 

set lookup [HTTP::host][HTTP::uri]

 

log $lookup

 

set mapping [findclass $lookup $::redir_class " "]

 

if { "" ne $mapping } {

 

redirect to "$mapping"

 

log "[HTTP::host] to $mapping"

 

} else {

 

set mapping [findclass [HTTP::host] $::redir_class " "]

 

if { "" ne $mapping } {

 

redirect to "$mapping"

 

log "[HTTP::host] to $mapping"

 

} else {

 

log "no hit [HTTP::host]"

 

redirect to "http://www.deere.com"

 

}

 

}

 

}

 

 

Well, both of these questions are accounted for with iRules.

1.) As far as using a non-case sensitive search, that's pretty straightforward. To do this you use the "tolower" command on a string before comparing it. This syntax looks like :

if { [string tolower [HTTP::uri] ] contains "some_string" } {
 ...

2.) A class can be of multiple types. If you're looking to be able to add characters like a plus ("+") to a class, just be sure the class is set to be a string class, and you can add anything you like in the class.

Hope this helps,

-Colin

As for the case comparison, why don't you just store all your values in lower case in the redir_class and then convert the host and uri to lowercase before calling findclass?

when HTTP_REQUEST {
  log start 
  set lookup [string tolower [HTTP::host][HTTP::uri]]
  log $lookup
  set mapping [findclass  $lookup  $::redir_class " "]
  if { "" ne $mapping } {
    redirect to "$mapping"
    log "[HTTP::host] to $mapping"
  } else {
    set mapping [findclass  [string tolower [HTTP::host]] $::redir_class " "] 
    if { "" ne $mapping } {
      redirect to "$mapping"
      log "[HTTP::host] to $mapping"
    } else {
      log "no hit [HTTP::host]"
      redirect to "http://www.deere.com"
    }
  }
}

As for the "+" character, I just tested it out and didn't find an issue with that character. Have you tried this and had problems, or were you just wondering whether it would work or not.

-Joe

This is what I am entering into the class

 

www.Commercial.JohnDeereCredit.com http://www.deere.com/deerecom/_Financial+Services/John+Deere+Credit/Grounds+Care+Solutions/Commercial/default.htm

 

 

WHen I do that and click Update I get to the following error

 

 

Bad Characters. Only the following special characters are allowed: period, asterisk, forward slash, dash, colon, underscore, question mark, equals, at sign, comma and ampersand (.*/-:_?=@,&)

 

 

The data group is set up as a string

What version of the software are you running? I tested your string out on 9.2 and the GUI let me enter it into a string class.

 

 

-Joe