For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Eblakely_225577's avatar
Eblakely_225577
Icon for Nimbostratus rankNimbostratus
Nov 28, 2016

Use of getfield in iRule

Hi all,   I'm using iRules to implement some rate limiting based on a custom HTTP header our users insert into each request.   The relevant bits in the iRule are as follows: if { [HTTP::header...
iRules
security
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Nov 28, 2016

Hi Eblakely,

you may use one of the commands below to extract your Authorization data.

Example 1: Serach the position of the first 

whitespace
character, then skip directly after the found position and take the remaining string. 

set limiter [findstr [HTTP::header value Authorization] " " 1 end]

Example 2: Same as Example 1 but with additional removal of any additional 

whitespaces
.

set limiter [join [findstr [HTTP::header value Authorization] " " 1 end] ""]

Cheers, Kai