1.6 Applicability Statement
This profile applies when implementing version 2 of the Hypertext Transfer Protocol (HTTP). The profile restricts which connection methods are supported. Certain implementations of Transport Layer Security (TLS) will be limited in their ability to comply with the requirements of [RFC7540] section 9.2; this profile also permits these limited implementations to continue interoperating by relaxing some requirements when connecting over TLS.
The accompanying extension permits mutually-consenting HTTP/2 implementations to perform TLS renegotiation on the existing HTTP connection when the security properties of renegotiation are acceptable for their scenarios and the TLS version in use supports it.