Forum Discussion
vaibhav_salunk2
Nimbostratus
Nimbostratusx-content-type-options
Hi,
I want to insert X-Content-Type-Options value as nosniff in http header using i-rule and below is my syntax.
when HTTP_RESPONSE {
if { [HTTP::header exists "X-Content-Type-Options"]} {
HTTP::header insert "X-Content-Type-Options" "nosniff"
}
}
Please confirm if it is correct or not
Hello,
Here is the correct syntax
when HTTP_RESPONSE_RELEASE { if {!([HTTP::header exists "X-Content-Type-Options"])} { HTTP::header insert "X-Content-Type-Options" "nosniff" } }
- Lidev
MVP
Hello,
Here is the correct syntax
when HTTP_RESPONSE_RELEASE { if {!([HTTP::header exists "X-Content-Type-Options"])} { HTTP::header insert "X-Content-Type-Options" "nosniff" } } 
vaibhav_salunk2Hi Lidev,
Thanks for quick reply, i am new to i-rule syntax, just wanted to understand use ! in syntax.
- Lidev
You're welcome.
if you want to go deeper, read this great documentation to know everything about iRules 😉
https://devcentral.f5.com/s/articles/irules-101-01-introduction-to-irules
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