Struct MessageRequest 

pub struct MessageRequest {
    pub metadata: Metadata,
    pub queries: Queries,
    pub answers: Vec<Record>,
    pub authorities: Vec<Record>,
    pub additionals: Vec<Record>,
    pub signature: Option<Box<Record<TSIG>>>,
    pub edns: Option<Edns>,
}

A Message which captures the data from an inbound request

Fields

metadata: Metadata

Metadata from the message header

queries: Queries

Query name and other query parameters

answers: Vec<Record>

Records which directly answer the query

authorities: Vec<Record>

Records with describe other authoritative servers

May optionally carry the SOA record for the authoritative data in the answer section.

additionals: Vec<Record>

Records which may be helpful in using the records in the other sections

signature: Option<Box<Record<TSIG>>>

TSIG signature for the message, if any

edns: Option<Edns>

RFC 6891, EDNS(0) Extensions, April 2013

6.1.1.  Basic Elements

 An OPT pseudo-RR (sometimes called a meta-RR) MAY be added to the
 additional data section of a request.

 The OPT RR has RR type 41.

 If an OPT record is present in a received request, compliant
 responders MUST include an OPT record in their respective responses.

 An OPT record does not carry any DNS data.  It is used only to
 contain control information pertaining to the question-and-answer
 sequence of a specific transaction.  OPT RRs MUST NOT be cached,
 forwarded, or stored in or loaded from Zone Files.

 The OPT RR MAY be placed anywhere within the additional data section.
 When an OPT RR is included within any DNS message, it MUST be the
 only OPT RR in that message.  If a query message with more than one
 OPT RR is received, a FORMERR (RCODE=1) MUST be returned.  The
 placement flexibility for the OPT RR does not override the need for
 the TSIG or SIG(0) RRs to be the last in the additional section
 whenever they are present.

Return value

Optionally returns a reference to EDNS OPT pseudo-RR

Implementations

impl MessageRequest

pub fn mock(metadata: Metadata, query: impl Into<LowerQuery>) -> Self

Available on crate features testing only.

Construct a mock MessageRequest for testing purposes

The unspecified fields are left empty.

pub fn max_payload(&self) -> u16

Return value

the max payload value as it’s defined in the EDNS OPT pseudo-RR.

pub fn version(&self) -> u8

Return value

the version as defined in the EDNS record

Trait Implementations

impl BinEncodable for MessageRequest

fn emit(&self, encoder: &mut BinEncoder<'_>) -> Result<(), ProtoError>

Write the type to the stream

fn to_bytes(&self) -> Result<Vec<u8>, ProtoError>

Returns the object in binary form

impl Debug for MessageRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for MessageRequest

fn eq(&self, other: &MessageRequest) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl UpdateRequest for MessageRequest

fn id(&self) -> u16

Id of the Message

fn zone(&self) -> Result<&LowerQuery, LookupError>

Zone being updated, this should be the query of a Message

fn prerequisites(&self) -> &[Record]

Prerequisites map to the Answer section of a Message

fn updates(&self) -> &[Record]

Records to update map to the Authority section of a Message

fn additionals(&self) -> &[Record]

Additional records

fn signature(&self) -> Option<&Record<TSIG>>

Signature for verifying the Message

impl StructuralPartialEq for MessageRequest