NewClientHeaderFlags creates the header flags for a client request.

NewName parses a domain name and returns a new Name.

Question.Class.

ResourceHeader.Class and Question.Class.

Global parameters.

Messages carried by UDP are restricted to 512 bytes (not counting the IP or UDP headers).

Inverse query.

Standard query.

Server status request.

Format error - The name server was unable to interpret the query.

Name Error - Meaningful only for responses from an authoritative name server, this code signifies that the domain name referenced in the query does not exist.

Not implemented - The name server does not support the requested kind of query.

Refused - The name server refuses to perform the specified operation for policy reasons.

Server failure - The name server was unable to process this query due to a problem with the name server.

No error condition.

The Internet supports name server access using TCP [RFC-9293] on server port 53 (decimal) as well as datagram access using UDP [RFC-768] on UDP port 53 (decimal).

SizeHeader is the length (in bytes) of a DNS header.

ResourceHeader.Type and Question.Type.

Question.Type.

A ResourceHeader is the header of a DNS resource record.

A Class is a type of network.

HeaderFlags gathers the flags in bits 16..31 of the header.

An OpCode is a DNS operation code which specifies the type of query.

An RCode is a DNS response status code.

Type is a type of DNS request and response.