redirect subdomain to append to uri

Hi Greg,

You can use the string range, getfield or scan command to parse the subdomain from a host header value:

when HTTP_REQUEST {
    Check for a non-null length host header
   if {[string match {*[a-zA-Z]*} [HTTP::host]]}{

       Use string commands to parse the subdomain
      set subdomain [string range [HTTP::host] 0 [expr {[string first . [HTTP::host]] -1}]]

       Use the getfield command to parse the subdomain
      set subdomain [getfield [HTTP::host] . 1]

       Use scan to parse the subdomain
      scan [HTTP::host] {%[^.]} subdomain
   }
}

I'd guess that getfield is probably the simplest and potentially the most efficient option to do this.

Aaron

I've been using the below code flawlessly for a couple of years now (funny, I found this post again from Google searching). I could now use an update if someone would be so kind: I need to check and remove if someone has www. in front of the subdomain intended. Using my original example:

 

 

greg.domain.com --> www.domain.com/sites/greg

 

bob.domain.dom --> www.domain.com/sites/bob

 

www.greg.domain.com --> www.domain.com/sites/greg

 

www.bob.domain.com --> www.domain.com/sites/bob

 

 

when HTTP_REQUEST {

 

Check for a non-null length host header

 

if {[string match {*[a-zA-Z]*} [HTTP::host]]}{

 

Use the getfield command to parse the subdomain

 

set subdomain [getfield [HTTP::host] . 1]

 

HTTP::redirect http://www.domain.com/sites/$subdomain

 

}

 

}

 

 

Any help appreciated! Thanks!

e.g.

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.252:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
  set subdomain [string map {"www." "" ".domain.com" "" "domain.com" ""} [string tolower [HTTP::host]]]
  if { $subdomain ne "" } {
    HTTP::redirect "http://www.domain.com/site/$subdomain"
  }
}
}

 www.domain.com

[root@centos251 ~] curl -I http://172.28.19.252 -H "Host: www.domain.com"
HTTP/1.1 200 OK
Date: Sat, 02 Mar 2013 00:22:03 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Sat, 27 Oct 2012 03:22:35 GMT
ETag: "4183f3-59-f28f94c0"
Accept-Ranges: bytes
Content-Length: 89
Content-Type: text/html; charset=UTF-8

 abc.domain.com
 
[root@centos251 ~] curl -I http://172.28.19.252 -H "Host: abc.domain.com"
HTTP/1.0 302 Found
Location: http://www.domain.com/site/abc
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

 www.abc.domain.com

[root@centos251 ~] curl -I http://172.28.19.252 -H "Host: www.abc.domain.com"
HTTP/1.0 302 Found
Location: http://www.domain.com/site/abc
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

works like a charm. thank you so much!