Forum Discussion
KimiLi_147173
Nimbostratus
NimbostratusWant 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/"...
If string position is known then you can use
function to grep value like below.getfieldset 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 aaaRefer below link. Hope it will be helpful.
boneyard
MVP
MVPyes, you can pretty much do everything on that. all, a part, multiple parts, nothing :)
check the documentation on a string manipulation: https://devcentral.f5.com/articles/the101-irules-101-string-handling-and-manipulation
https://devcentral.f5.com/articles/irules-101-13-tcl-string-commands-part-1
it is just a matter of writing the code to do what you want.