Constant http::header::X_XSS_PROTECTION

pub const X_XSS_PROTECTION: HeaderName;

Stop pages from loading when an XSS attack is detected.

The HTTP X-XSS-Protection response header is a feature of Internet Explorer, Chrome and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks. Although these protections are largely unnecessary in modern browsers when sites implement a strong Content-Security-Policy that disables the use of inline JavaScript (‘unsafe-inline’), they can still provide protections for users of older web browsers that don’t yet support CSP.