Cookie persistence via iRule

this is what i understand Steven meant.

 configuration

[root@ve11c:Active:In Sync] config  tmsh list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.10:80
    ip-protocol tcp
    mask 255.255.255.255
    persist {
        cookie {
            default no
        }
        source_addr {
            default yes
        }
    }
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        qux
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 13
}
[root@ve11c:Active:In Sync] config  tmsh list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  if { [HTTP::uri] starts_with "/test/" } {
    persist cookie
  } else {
     Use source address persistence by default
  }
}
}

 source address persistence

[root@ve11c:Active:In Sync] config  date; tmsh delete ltm persistence persist-records
Sat May 16 16:30:22 SGT 2015

[root@ve11c:Active:In Sync] config  date; curl -I http://172.28.24.10/
Sat May 16 16:30:25 SGT 2015
HTTP/1.1 200 OK
Date: Sat, 16 May 2015 08:11:08 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Sun, 09 Feb 2014 08:39:51 GMT
ETag: "41879c-59-2a9c23c0"
Accept-Ranges: bytes
Content-Length: 89
Content-Type: text/html; charset=UTF-8

[root@ve11c:Active:In Sync] config  date; tmsh show ltm persistence persist-records all-properties
Sat May 16 16:30:29 SGT 2015
Sys::Persistent Connections
source-address - 172.28.24.10:80 - 200.200.200.101:80
-----------------------------------------------------
  TMM           0
  Mode          source-address
  Value         172.28.24.13
  Age (sec.)    5
  Virtual Name  /Common/bar
  Virtual Addr  172.28.24.10:80
  Node Addr     200.200.200.101:80
  Pool Name     /Common/foo
  Client Addr   172.28.24.13
  Owner entry

Total records returned: 1

 cookie persistence

[root@ve11c:Active:In Sync] config  date; tmsh delete ltm persistence persist-records
Sat May 16 16:30:46 SGT 2015

[root@ve11c:Active:In Sync] config  date; curl -I http://172.28.24.10/test/
Sat May 16 16:30:52 SGT 2015
HTTP/1.1 200 OK
Date: Sat, 16 May 2015 08:13:30 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Mon, 17 Jun 2013 18:14:47 GMT
ETag: "420027-4b-925773c0"
Accept-Ranges: bytes
Content-Length: 75
Content-Type: text/html; charset=UTF-8
Set-Cookie: BIGipServerfoo=1875429576.20480.0000; path=/

[root@ve11c:Active:In Sync] config  date; tmsh show ltm persistence persist-records all-properties
Sat May 16 16:30:55 SGT 2015
Sys::Persistent Connections
Total records returned: 0