package dnsmessage

Import Path
	vendor/golang.org/x/net/dns/dnsmessage (on go.dev)

Dependency Relation
	imports one package, and imported by one package

Involved Source Files

	  d message.go
		Package dnsmessage provides a mostly RFC 1035 compliant implementation of
		DNS message packing and unpacking.
		
		The package also supports messages with Extension Mechanisms for DNS
		(EDNS(0)) as defined in RFC 6891.
		
		This implementation is designed to minimize heap allocations and avoid
		unnecessary packing and unpacking as much as possible.
Package-Level Type Names (total 25)

	/* sort by: alphabet | popularity */
	 type AAAAResource (struct)
		An AAAAResource is an AAAA Resource record.

		Fields (only one)
			AAAA [16]byte
		Methods (only one)
			(*AAAAResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*AAAAResource : ResourceBody
			*AAAAResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).AAAAResource() (AAAAResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).AAAAResource(h ResourceHeader, r AAAAResource) error

	 type AResource (struct)
		An AResource is an A Resource record.

		Fields (only one)
			A [4]byte
		Methods (only one)
			(*AResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*AResource : ResourceBody
			*AResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).AResource() (AResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).AResource(h ResourceHeader, r AResource) error

	 type Builder (struct)
		A Builder allows incrementally packing a DNS message.
		
		Example usage:
		
			buf := make([]byte, 2, 514)
			b := NewBuilder(buf, Header{...})
			b.EnableCompression()
			// Optionally start a section and add things to that section.
			// Repeat adding sections as necessary.
			buf, err := b.Finish()
			// If err is nil, buf[2:] will contain the built bytes.

		Methods (total 18)
			(*Builder) AAAAResource(h ResourceHeader, r AAAAResource) error
				AAAAResource adds a single AAAAResource.

			(*Builder) AResource(h ResourceHeader, r AResource) error
				AResource adds a single AResource.

			(*Builder) CNAMEResource(h ResourceHeader, r CNAMEResource) error
				CNAMEResource adds a single CNAMEResource.

			(*Builder) EnableCompression()
				EnableCompression enables compression in the Builder.
				
				Leaving compression disabled avoids compression related allocations, but can
				result in larger message sizes. Be careful with this mode as it can cause
				messages to exceed the UDP size limit.
				
				According to RFC 1035, section 4.1.4, the use of compression is optional, but
				all implementations must accept both compressed and uncompressed DNS
				messages.
				
				Compression should be enabled before any sections are added for best results.

			(*Builder) Finish() ([]byte, error)
				Finish ends message building and generates a binary message.

			(*Builder) MXResource(h ResourceHeader, r MXResource) error
				MXResource adds a single MXResource.

			(*Builder) NSResource(h ResourceHeader, r NSResource) error
				NSResource adds a single NSResource.

			(*Builder) OPTResource(h ResourceHeader, r OPTResource) error
				OPTResource adds a single OPTResource.

			(*Builder) PTRResource(h ResourceHeader, r PTRResource) error
				PTRResource adds a single PTRResource.

			(*Builder) Question(q Question) error
				Question adds a single Question.

			(*Builder) SOAResource(h ResourceHeader, r SOAResource) error
				SOAResource adds a single SOAResource.

			(*Builder) SRVResource(h ResourceHeader, r SRVResource) error
				SRVResource adds a single SRVResource.

			(*Builder) StartAdditionals() error
				StartAdditionals prepares the builder for packing Additionals.

			(*Builder) StartAnswers() error
				StartAnswers prepares the builder for packing Answers.

			(*Builder) StartAuthorities() error
				StartAuthorities prepares the builder for packing Authorities.

			(*Builder) StartQuestions() error
				StartQuestions prepares the builder for packing Questions.

			(*Builder) TXTResource(h ResourceHeader, r TXTResource) error
				TXTResource adds a single TXTResource.

			(*Builder) UnknownResource(h ResourceHeader, r UnknownResource) error
				UnknownResource adds a single UnknownResource.

		As Outputs Of (at least one exported)
			func NewBuilder(buf []byte, h Header) Builder

	 type Class uint16 (basic type)
		A Class is a type of network.

		Methods (total 2)
			( Class) GoString() string
				GoString implements fmt.GoStringer.GoString.

			( Class) String() string
				String implements fmt.Stringer.String.

		Implements (at least 3)
			 Class : expvar.Var
			 Class : fmt.GoStringer
			 Class : fmt.Stringer
		As Types Of (total 5)
			const ClassANY
			const ClassCHAOS
			const ClassCSNET
			const ClassHESIOD
			const ClassINET

	 type CNAMEResource (struct)
		A CNAMEResource is a CNAME Resource record.

		Fields (only one)
			CNAME Name
		Methods (only one)
			(*CNAMEResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*CNAMEResource : ResourceBody
			*CNAMEResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).CNAMEResource() (CNAMEResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).CNAMEResource(h ResourceHeader, r CNAMEResource) error

	 type Header (struct)
		Header is a representation of a DNS message header.

		Fields (total 10)
			AuthenticData bool
			Authoritative bool
			CheckingDisabled bool
			ID uint16
			OpCode OpCode
			RCode RCode
			RecursionAvailable bool
			RecursionDesired bool
			Response bool
			Truncated bool
		Methods (only one)
			(*Header) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least one exported)
			*Header : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).Start(msg []byte) (Header, error)
		As Inputs Of (at least one exported)
			func NewBuilder(buf []byte, h Header) Builder

	 type Message (struct)
		Message is a representation of a DNS message.

		Fields (total 15)
			Additionals []Resource
			Answers []Resource
			Authorities []Resource
			Header Header
			Header.AuthenticData bool
			Header.Authoritative bool
			Header.CheckingDisabled bool
			Header.ID uint16
			Header.OpCode OpCode
			Header.RCode RCode
			Header.RecursionAvailable bool
			Header.RecursionDesired bool
			Header.Response bool
			Header.Truncated bool
			Questions []Question
		Methods (total 4)
			(*Message) AppendPack(b []byte) ([]byte, error)
				AppendPack is like Pack but appends the full Message to b and returns the
				extended buffer.

			(*Message) GoString() string
				GoString implements fmt.GoStringer.GoString.

			(*Message) Pack() ([]byte, error)
				Pack packs a full Message.

			(*Message) Unpack(msg []byte) error
				Unpack parses a full Message.

		Implements (at least one exported)
			*Message : fmt.GoStringer

	 type MXResource (struct)
		An MXResource is an MX Resource record.

		Fields (total 2)
			MX Name
			Pref uint16
		Methods (only one)
			(*MXResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*MXResource : ResourceBody
			*MXResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).MXResource() (MXResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).MXResource(h ResourceHeader, r MXResource) error

	 type Name (struct)
		A Name is a non-encoded and non-escaped domain name. It is used instead of strings to avoid
		allocations.

		Fields (total 2)
			Data [255]byte
			Length uint8
		Methods (total 2)
			(*Name) GoString() string
				GoString implements fmt.GoStringer.GoString.

			( Name) String() string
				String implements fmt.Stringer.String.
				
				Note: characters inside the labels are not escaped in any way.

		Implements (at least 3)
			 Name : expvar.Var
			*Name : fmt.GoStringer
			 Name : fmt.Stringer
		As Outputs Of (at least 2)
			func MustNewName(name string) Name
			func NewName(name string) (Name, error)

	 type NSResource (struct)
		An NSResource is an NS Resource record.

		Fields (only one)
			NS Name
		Methods (only one)
			(*NSResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*NSResource : ResourceBody
			*NSResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).NSResource() (NSResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).NSResource(h ResourceHeader, r NSResource) error

	 type OpCode uint16 (basic type)
		An OpCode is a DNS operation code.

		Methods (only one)
			( OpCode) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least one exported)
			 OpCode : fmt.GoStringer

	 type Option (struct)
		An Option represents a DNS message option within OPTResource.
		
		The message option is part of the extension mechanisms for DNS as
		defined in RFC 6891.

		Fields (total 2)
			Code uint16
				// option code

			Data []byte
		Methods (only one)
			(*Option) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least one exported)
			*Option : fmt.GoStringer

	 type OPTResource (struct)
		An OPTResource is an OPT pseudo Resource record.
		
		The pseudo resource record is part of the extension mechanisms for DNS
		as defined in RFC 6891.

		Fields (only one)
			Options []Option
		Methods (only one)
			(*OPTResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*OPTResource : ResourceBody
			*OPTResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).OPTResource() (OPTResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).OPTResource(h ResourceHeader, r OPTResource) error

	 type Parser (struct)
		A Parser allows incrementally parsing a DNS message.
		
		When parsing is started, the Header is parsed. Next, each Question can be
		either parsed or skipped. Alternatively, all Questions can be skipped at
		once. When all Questions have been parsed, attempting to parse Questions
		will return the [ErrSectionDone] error.
		After all Questions have been either parsed or skipped, all
		Answers, Authorities and Additionals can be either parsed or skipped in the
		same way, and each type of Resource must be fully parsed or skipped before
		proceeding to the next type of Resource.
		
		Parser is safe to copy to preserve the parsing state.
		
		Note that there is no requirement to fully skip or parse the message.

		Methods (total 31)
			(*Parser) AAAAResource() (AAAAResource, error)
				AAAAResource parses a single AAAAResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) AResource() (AResource, error)
				AResource parses a single AResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) Additional() (Resource, error)
				Additional parses a single Additional Resource.

			(*Parser) AdditionalHeader() (ResourceHeader, error)
				AdditionalHeader parses a single Additional ResourceHeader.

			(*Parser) AllAdditionals() ([]Resource, error)
				AllAdditionals parses all Additional Resources.

			(*Parser) AllAnswers() ([]Resource, error)
				AllAnswers parses all Answer Resources.

			(*Parser) AllAuthorities() ([]Resource, error)
				AllAuthorities parses all Authority Resources.

			(*Parser) AllQuestions() ([]Question, error)
				AllQuestions parses all Questions.

			(*Parser) Answer() (Resource, error)
				Answer parses a single Answer Resource.

			(*Parser) AnswerHeader() (ResourceHeader, error)
				AnswerHeader parses a single Answer ResourceHeader.

			(*Parser) Authority() (Resource, error)
				Authority parses a single Authority Resource.

			(*Parser) AuthorityHeader() (ResourceHeader, error)
				AuthorityHeader parses a single Authority ResourceHeader.

			(*Parser) CNAMEResource() (CNAMEResource, error)
				CNAMEResource parses a single CNAMEResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) MXResource() (MXResource, error)
				MXResource parses a single MXResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) NSResource() (NSResource, error)
				NSResource parses a single NSResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) OPTResource() (OPTResource, error)
				OPTResource parses a single OPTResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) PTRResource() (PTRResource, error)
				PTRResource parses a single PTRResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) Question() (Question, error)
				Question parses a single Question.

			(*Parser) SOAResource() (SOAResource, error)
				SOAResource parses a single SOAResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) SRVResource() (SRVResource, error)
				SRVResource parses a single SRVResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) SkipAdditional() error
				SkipAdditional skips a single Additional Resource.
				
				It does not perform a complete validation of the resource header, which means
				it may return a nil error when the [AdditionalHeader] would actually return an error.

			(*Parser) SkipAllAdditionals() error
				SkipAllAdditionals skips all Additional Resources.

			(*Parser) SkipAllAnswers() error
				SkipAllAnswers skips all Answer Resources.

			(*Parser) SkipAllAuthorities() error
				SkipAllAuthorities skips all Authority Resources.

			(*Parser) SkipAllQuestions() error
				SkipAllQuestions skips all Questions.

			(*Parser) SkipAnswer() error
				SkipAnswer skips a single Answer Resource.
				
				It does not perform a complete validation of the resource header, which means
				it may return a nil error when the [AnswerHeader] would actually return an error.

			(*Parser) SkipAuthority() error
				SkipAuthority skips a single Authority Resource.
				
				It does not perform a complete validation of the resource header, which means
				it may return a nil error when the [AuthorityHeader] would actually return an error.

			(*Parser) SkipQuestion() error
				SkipQuestion skips a single Question.

			(*Parser) Start(msg []byte) (Header, error)
				Start parses the header and enables the parsing of Questions.

			(*Parser) TXTResource() (TXTResource, error)
				TXTResource parses a single TXTResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.

			(*Parser) UnknownResource() (UnknownResource, error)
				UnknownResource parses a single UnknownResource.
				
				One of the XXXHeader methods must have been called before calling this
				method.


	 type PTRResource (struct)
		A PTRResource is a PTR Resource record.

		Fields (only one)
			PTR Name
		Methods (only one)
			(*PTRResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*PTRResource : ResourceBody
			*PTRResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).PTRResource() (PTRResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).PTRResource(h ResourceHeader, r PTRResource) error

	 type Question (struct)
		A Question is a DNS query.

		Fields (total 3)
			Class Class
			Name Name
			Type Type
		Methods (only one)
			(*Question) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least one exported)
			*Question : fmt.GoStringer
		As Outputs Of (at least 2)
			func (*Parser).AllQuestions() ([]Question, error)
			func (*Parser).Question() (Question, error)
		As Inputs Of (at least one exported)
			func (*Builder).Question(q Question) error

	 type RCode uint16 (basic type)
		An RCode is a DNS response status code.

		Methods (total 2)
			( RCode) GoString() string
				GoString implements fmt.GoStringer.GoString.

			( RCode) String() string
				String implements fmt.Stringer.String.

		Implements (at least 3)
			 RCode : expvar.Var
			 RCode : fmt.GoStringer
			 RCode : fmt.Stringer
		As Outputs Of (at least one exported)
			func (*ResourceHeader).ExtendedRCode(rcode RCode) RCode
		As Inputs Of (at least 2)
			func (*ResourceHeader).ExtendedRCode(rcode RCode) RCode
			func (*ResourceHeader).SetEDNS0(udpPayloadLen int, extRCode RCode, dnssecOK bool) error
		As Types Of (total 6)
			const RCodeFormatError
			const RCodeNameError
			const RCodeNotImplemented
			const RCodeRefused
			const RCodeServerFailure
			const RCodeSuccess

	 type Resource (struct)
		A Resource is a DNS resource record.

		Fields (total 2)
			Body ResourceBody
			Header ResourceHeader
		Methods (only one)
			(*Resource) GoString() string
		Implements (at least one exported)
			*Resource : fmt.GoStringer
		As Outputs Of (at least 6)
			func (*Parser).Additional() (Resource, error)
			func (*Parser).AllAdditionals() ([]Resource, error)
			func (*Parser).AllAnswers() ([]Resource, error)
			func (*Parser).AllAuthorities() ([]Resource, error)
			func (*Parser).Answer() (Resource, error)
			func (*Parser).Authority() (Resource, error)

	 type ResourceBody (interface)
		A ResourceBody is a DNS resource record minus the header.

		Methods (only one)
			( ResourceBody) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implemented By (at least 11)
			*AAAAResource
			*AResource
			*CNAMEResource
			*MXResource
			*NSResource
			*OPTResource
			*PTRResource
			*SOAResource
			*SRVResource
			*TXTResource
			*UnknownResource
		Implements (at least one exported)
			 ResourceBody : fmt.GoStringer

	 type ResourceHeader (struct)
		A ResourceHeader is the header of a DNS resource record. There are
		many types of DNS resource records, but they all share the same header.

		Fields (total 5)
			Class Class
				Class is the class of network to which this DNS resource record
				pertains.

			Length uint16
				Length is the length of data in the resource record after the header.
				
				This field will be set automatically during packing.

			Name Name
				Name is the domain name for which this resource record pertains.

			TTL uint32
				TTL is the length of time (measured in seconds) which this resource
				record is valid for (time to live). All Resources in a set should
				have the same TTL (RFC 2181 Section 5.2).

			Type Type
				Type is the type of DNS resource record.
				
				This field will be set automatically during packing.

		Methods (total 4)
			(*ResourceHeader) DNSSECAllowed() bool
				DNSSECAllowed reports whether the DNSSEC OK bit is set.

			(*ResourceHeader) ExtendedRCode(rcode RCode) RCode
				ExtendedRCode returns an extended RCode.
				
				The provided rcode must be the RCode in DNS message header.

			(*ResourceHeader) GoString() string
				GoString implements fmt.GoStringer.GoString.

			(*ResourceHeader) SetEDNS0(udpPayloadLen int, extRCode RCode, dnssecOK bool) error
				SetEDNS0 configures h for EDNS(0).
				
				The provided extRCode must be an extended RCode.

		Implements (at least one exported)
			*ResourceHeader : fmt.GoStringer
		As Outputs Of (at least 3)
			func (*Parser).AdditionalHeader() (ResourceHeader, error)
			func (*Parser).AnswerHeader() (ResourceHeader, error)
			func (*Parser).AuthorityHeader() (ResourceHeader, error)
		As Inputs Of (at least 11)
			func (*Builder).AAAAResource(h ResourceHeader, r AAAAResource) error
			func (*Builder).AResource(h ResourceHeader, r AResource) error
			func (*Builder).CNAMEResource(h ResourceHeader, r CNAMEResource) error
			func (*Builder).MXResource(h ResourceHeader, r MXResource) error
			func (*Builder).NSResource(h ResourceHeader, r NSResource) error
			func (*Builder).OPTResource(h ResourceHeader, r OPTResource) error
			func (*Builder).PTRResource(h ResourceHeader, r PTRResource) error
			func (*Builder).SOAResource(h ResourceHeader, r SOAResource) error
			func (*Builder).SRVResource(h ResourceHeader, r SRVResource) error
			func (*Builder).TXTResource(h ResourceHeader, r TXTResource) error
			func (*Builder).UnknownResource(h ResourceHeader, r UnknownResource) error

	 type SOAResource (struct)
		An SOAResource is an SOA Resource record.

		Fields (total 7)
			Expire uint32
			MBox Name
			MinTTL uint32
				MinTTL the is the default TTL of Resources records which did not
				contain a TTL value and the TTL of negative responses. (RFC 2308
				Section 4)

			NS Name
			Refresh uint32
			Retry uint32
			Serial uint32
		Methods (only one)
			(*SOAResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*SOAResource : ResourceBody
			*SOAResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).SOAResource() (SOAResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).SOAResource(h ResourceHeader, r SOAResource) error

	 type SRVResource (struct)
		An SRVResource is an SRV Resource record.

		Fields (total 4)
			Port uint16
			Priority uint16
			Target Name
				// Not compressed as per RFC 2782.

			Weight uint16
		Methods (only one)
			(*SRVResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*SRVResource : ResourceBody
			*SRVResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).SRVResource() (SRVResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).SRVResource(h ResourceHeader, r SRVResource) error

	 type TXTResource (struct)
		A TXTResource is a TXT Resource record.

		Fields (only one)
			TXT []string
		Methods (only one)
			(*TXTResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*TXTResource : ResourceBody
			*TXTResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).TXTResource() (TXTResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).TXTResource(h ResourceHeader, r TXTResource) error

	 type Type uint16 (basic type)
		A Type is a type of DNS request and response.

		Methods (total 2)
			( Type) GoString() string
				GoString implements fmt.GoStringer.GoString.

			( Type) String() string
				String implements fmt.Stringer.String.

		Implements (at least 3)
			 Type : expvar.Var
			 Type : fmt.GoStringer
			 Type : fmt.Stringer
		As Types Of (total 15)
			const TypeA
			const TypeAAAA
			const TypeALL
			const TypeAXFR
			const TypeCNAME
			const TypeHINFO
			const TypeMINFO
			const TypeMX
			const TypeNS
			const TypeOPT
			const TypePTR
			const TypeSOA
			const TypeSRV
			const TypeTXT
			const TypeWKS

	 type UnknownResource (struct)
		An UnknownResource is a catch-all container for unknown record types.

		Fields (total 2)
			Data []byte
			Type Type
		Methods (only one)
			(*UnknownResource) GoString() string
				GoString implements fmt.GoStringer.GoString.

		Implements (at least 2)
			*UnknownResource : ResourceBody
			*UnknownResource : fmt.GoStringer
		As Outputs Of (at least one exported)
			func (*Parser).UnknownResource() (UnknownResource, error)
		As Inputs Of (at least one exported)
			func (*Builder).UnknownResource(h ResourceHeader, r UnknownResource) error


Package-Level Functions (total 3)

	 func MustNewName(name string) Name
		MustNewName creates a new Name from a string and panics on error.

	 func NewBuilder(buf []byte, h Header) Builder
		NewBuilder creates a new builder with compression disabled.
		
		Note: Most users will want to immediately enable compression with the
		EnableCompression method. See that method's comment for why you may or may
		not want to enable compression.
		
		The DNS message is appended to the provided initial buffer buf (which may be
		nil) as it is built. The final message is returned by the (*Builder).Finish
		method, which includes buf[:len(buf)] and may return the same underlying
		array if there was sufficient capacity in the slice.

	 func NewName(name string) (Name, error)
		NewName creates a new Name from a string.


Package-Level Variables (total 2)

	  var ErrNotStarted error
		ErrNotStarted indicates that the prerequisite information isn't
		available yet because the previous records haven't been appropriately
		parsed, skipped or finished.

	  var ErrSectionDone error
		ErrSectionDone indicated that all records in the section have been
		parsed or finished.


Package-Level Constants (total 26)

	const ClassANY Class = 255
		Question.Class

	const ClassCHAOS Class = 3
	const ClassCSNET Class = 2
	const ClassHESIOD Class = 4
	const ClassINET Class = 1
		ResourceHeader.Class and Question.Class

	const RCodeFormatError RCode = 1 // FormErr
		Header.RCode values.

	const RCodeNameError RCode = 3 // NXDomain
		Header.RCode values.

	const RCodeNotImplemented RCode = 4 // NotImp
		Header.RCode values.

	const RCodeRefused RCode = 5 // Refused
		Header.RCode values.

	const RCodeServerFailure RCode = 2 // ServFail
		Header.RCode values.

	const RCodeSuccess RCode = 0 // NoError
		Header.RCode values.

	const TypeA Type = 1
		ResourceHeader.Type and Question.Type

	const TypeAAAA Type = 28
	const TypeALL Type = 255
	const TypeAXFR Type = 252
	const TypeCNAME Type = 5
	const TypeHINFO Type = 13
	const TypeMINFO Type = 14
	const TypeMX Type = 15
	const TypeNS Type = 2
	const TypeOPT Type = 41
	const TypePTR Type = 12
	const TypeSOA Type = 6
	const TypeSRV Type = 33
	const TypeTXT Type = 16
	const TypeWKS Type = 11
		Question.Type

The pages are generated with Golds v0.6.9-preview. (GOOS=linux GOARCH=amd64)
Golds is a Go 101 project developed by Tapir Liu.
PR and bug reports are welcome and can be submitted to the issue list.
Please follow @Go100and1 (reachable from the left QR code) to get the latest news of Golds.