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术语

  1. Terminology

A server that supports this protocol is called a "DoH server" to differentiate it from a "DNS server" (one that only provides DNS service over one or more of the other transport protocols standardized for DNS). Similarly, a client that supports this protocol is called a "DoH client".

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.