Constant http::header::CONTENT_SECURITY_POLICY_REPORT_ONLY

pub const CONTENT_SECURITY_POLICY_REPORT_ONLY: HeaderName;

Allows experimenting with policies by monitoring their effects.

The HTTP Content-Security-Policy-Report-Only response header allows web developers to experiment with policies by monitoring (but not enforcing) their effects. These violation reports consist of JSON documents sent via an HTTP POST request to the specified URI.