What is Expect-Staple?
The Expect-Staple header allows you to determine if your site is delivering proper OCSP Staples with certificates. If you're thinking about using Must-Staple certificates then deploying Expect-Staple is an essential step prior to deploying them.
Deploying Expect-Staple is safe, easy and can give you vital information about your site. Right now the only way to deploy Expect-Staple is with a custom entry into the Chromium HSTS preload list. Please contact us if you'd like information on how to request inclusion.