03-Feb-2021 12:23
I was trying to figure out how to write an iRule to look for a parameter in the Body. I thought the token would be in the header. However the developer put it in the body. How do I look in the body of a http req.
Thanks for your help.
when HTTP_REQUEST {
if { [HTTP::uri] equals "login.aspx" } {
if { [HTTP::header exists "token"] } {
log local0. "Request from [IP::client_addr] for login.aspx includes HTTP header token with value: [HTTP::header "token"]"
} else {
log local0. "Request from [IP::client_addr] for login.aspx does not include HTTP header token"
}
}
}
03-Feb-2021
12:42
- last edited on
04-Jun-2023
21:04
by
JimmyPackets
when HTTP_REQUEST {
if {[HTTP::method] eq "POST"}{
if {[HTTP::header "Content-Length"] ne "" && [HTTP::header "Content-Length"] <= 1048576}{
set content_length [HTTP::header "Content-Length"]
} else {
set content_length 1048576
}
if { $content_length > 0} {
HTTP::collect $content_length
}
}
}
when HTTP_REQUEST_DATA {
log local0. "Token = [findstr [HTTP::payload] "token=" 6 &]"
}
04-Feb-2021 11:56
This is the way, however I would be careful to implement it. I'd recommend to do performance testing before deploying it in a production environment.
Just recently I had a similar requirement and it works good with small requests. However the customer had POST requests up to 400kb. Then this suddenly becomes heavy on the CPU.