Forum Discussion

KimiLi_147173's avatar
KimiLi_147173
Icon for Nimbostratus rankNimbostratus
Nov 27, 2017

Want to rewrite part of host

Hi guys, I'm still new to iRules, I wonder that if it is possible that an iRule can rewrite part of the host instead of all of it.   I mean like, if a client request a host like "123.aaa.com/888/"...
application delivery
LTM
  • Samir_Jha_52506's avatar
    Samir_Jha_52506
    Nov 28, 2017

    If string position is known then you can use 

    getfield
    function to grep value like below. 

    set hostname [getfield [HTTP::host] "." 1]   If the URL is xxx.aaa.bbb.com, then getfield command will grep value of 1st position xxx
set hostname1 [getfield [HTTP::host] "." 2]   If the URL is xxx.aaa.bbb.com, then getfield command will grep value of 2nd position aaa

    Refer below link. Hope it will be helpful.

MR_Freddy's avatar
MR_Freddy
Icon for Nimbostratus rankNimbostratus
Nov 28, 2017

can you test this? 

when HTTP_REQUEST {
if {[string tolower [HTTP::host]] eq "xxx.aaa.com" }{
    HTTP::redirect "http://xxx.bbb.com[HTTP::uri]"
} 
}