18.104.22.168 Tunneled Requests
This section does not define a new request type, but rather defines an alternate way of representing Update Request Types (section 22.214.171.124) and Delete Request Types (section 126.96.36.199) by using a POST request and the X-HTTP-Method (section 188.8.131.52) request header. This alternative representation is often referred to as "POST tunneling".
This Tunneled Request type is fully defined through X-HTTP-Method header usage. As such, see X-HTTP-Method (section 184.108.40.206) for details regarding how the X-HTTP-Method header is used to create a Tunneled Request.