Enum trust_dns_proto::op::op_code::OpCode

pub enum OpCode {
    Query,
    Status,
    Notify,
    Update,
}

Operation code for queries, updates, and responses

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

OPCODE          A four bit field that specifies kind of query in this
                message.  This value is set by the originator of a query
                and copied into the response.  The values are:

                0               a standard query (QUERY)

                1               an inverse query (IQUERY)

                2               a server status request (STATUS)

                3-15            reserved for future use

Variants

Query

Query request RFC 1035

Status

Status message RFC 1035

Notify

Notify of change RFC 1996

Update

Update message RFC 2136

Methods

impl OpCode

Convert from u8 to OpCode

use std::convert::From;
use trust_dns_proto::op::op_code::OpCode;

let var: OpCode = OpCode::from_u8(0).unwrap();
assert_eq!(OpCode::Query, var);

pub fn from_u8(value: u8) -> ProtoResult<Self>

Decodes the binary value of the OpCode

Trait Implementations

impl Copy for OpCode

impl PartialOrd<OpCode> for OpCode

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

This method returns an ordering between self and other values if one exists.

#[must_use]

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

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

#[must_use]

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

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

#[must_use]

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

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

#[must_use]

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 From<OpCode> for u8

Convert from OpCode to u8

use std::convert::From;
use trust_dns_proto::op::op_code::OpCode;

let var: u8 = From::from(OpCode::Query);
assert_eq!(0, var);

let var: u8 = OpCode::Query.into();
assert_eq!(0, var);

fn from(rt: OpCode) -> Self

Performs the conversion.

impl PartialEq<OpCode> for OpCode

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl Clone for OpCode

fn clone(&self) -> OpCode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OpCode

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

Formats the value using the given formatter.