Struct trust_dns::rr::resource::Record

pub struct Record {
    // some fields omitted
}

Resource records are storage value in DNS, into which all key/value pair data is stored.

RFC 1035, DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION, November 1987

4.1.3. Resource record format

The answer, authority, and additional sections all share the same
format: a variable number of resource records, where the number of
records is specified in the corresponding count field in the header.
Each resource record has the following format:
                                    1  1  1  1  1  1
      0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                                               |
    /                                               /
    /                      NAME                     /
    |                                               |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                      TYPE                     |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                     CLASS                     |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                      TTL                      |
    |                                               |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                   RDLENGTH                    |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--|
    /                     RDATA                     /
    /                                               /
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

Methods

impl Record

fn new() -> Record

Creates a default record, use the setters to build a more useful object.

There are no optional elements in this object, defaults are an empty name, type A, class IN, ttl of 0 and the 0.0.0.0 ip address.

fn with(name: Name, rr_type: RecordType, ttl: u32) -> Record

Create a record with the specified initial values.

Arguments

• name - name of the resource records
• rr_type - the record type
• ttl - time-to-live is the amount of time this record should be cached before refreshing

fn name(&mut self, name: Name) -> &mut Self

NAME            a domain name to which this resource record pertains.

fn add_name(&mut self, label: String) -> &mut Self

fn rr_type(&mut self, rr_type: RecordType) -> &mut Self

TYPE            two octets containing one of the RR type codes.  This
                field specifies the meaning of the data in the RDATA
                field.

fn dns_class(&mut self, dns_class: DNSClass) -> &mut Self

CLASS           two octets which specify the class of the data in the
                RDATA field.

fn ttl(&mut self, ttl: u32) -> &mut Self

TTL             a 32 bit unsigned integer that specifies the time
                interval (in seconds) that the resource record may be
                cached before it should be discarded.  Zero values are
                interpreted to mean that the RR can only be used for the
                transaction in progress, and should not be cached.

fn rdata(&mut self, rdata: RData) -> &mut Self

RDATA           a variable length string of octets that describes the
                resource.  The format of this information varies
                according to the TYPE and CLASS of the resource record.
                For example, the if the TYPE is A and the CLASS is IN,
                the RDATA field is a 4 octet ARPA Internet address.

fn get_name(&self) -> &Name

fn get_rr_type(&self) -> RecordType

fn get_dns_class(&self) -> DNSClass

fn get_ttl(&self) -> u32

fn get_rdata(&self) -> &RData

fn get_rdata_mut(&mut self) -> &mut RData

Trait Implementations

impl Clone for Record

fn clone(&self) -> Record

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Record

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Ord for Record

fn cmp(&self, __arg_0: &Record) -> Ordering

This method returns an Ordering between self and other.

impl Eq for Record

impl BinSerializable<Record> for Record

fn read(decoder: &mut BinDecoder) -> DecodeResult<Record>

parse a resource record line example: WARNING: the record_bytes is 100% consumed and destroyed in this parsing process

fn emit(&self, encoder: &mut BinEncoder) -> EncodeResult

impl PartialEq for Record

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

Equality or records, as defined by RFC 2136, DNS Update, April 1997

  1.1.1. Two RRs are considered equal if their NAME, CLASS, TYPE,
  RDLENGTH and RDATA fields are equal.  Note that the time-to-live
  (TTL) field is explicitly excluded from the comparison.

  1.1.2. The rules for comparison of character strings in names are
  specified in [RFC1035 2.3.3]. i.e. case insensitive

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

This method tests for !=.

impl PartialOrd<Record> for Record

fn partial_cmp(&self, other: &Record) -> Option<Ordering>

Canonical ordering as defined by RFC 4034, DNSSEC Resource Records, March 2005

6.2.  Canonical RR Form

   For the purposes of DNS security, the canonical form of an RR is the
   wire format of the RR where:

   1.  every domain name in the RR is fully expanded (no DNS name
       compression) and fully qualified;

   2.  all uppercase US-ASCII letters in the owner name of the RR are
       replaced by the corresponding lowercase US-ASCII letters;

   3.  if the type of the RR is NS, MD, MF, CNAME, SOA, MB, MG, MR, PTR,
       HINFO, MINFO, MX, HINFO, RP, AFSDB, RT, SIG, PX, NXT, NAPTR, KX,
       SRV, DNAME, A6, RRSIG, or NSEC, all uppercase US-ASCII letters in
       the DNS names contained within the RDATA are replaced by the
       corresponding lowercase US-ASCII letters;

   4.  if the owner name of the RR is a wildcard name, the owner name is
       in its original unexpanded form, including the "*" label (no
       wildcard substitution); and

   5.  the RR's TTL is set to its original value as it appears in the
       originating authoritative zone or the Original TTL field of the
       covering RRSIG RR.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> From<&'a Edns> for Record

fn from(value: &'a Edns) -> Record

This returns a Resource Record that is formatted for Edns(0). Note: the rcode_high value is only part of the rcode, the rest is part of the base