Struct CoapOption 

pub struct CoapOption {
    pub number: u16,
    pub value: Vec<u8>,
}

A single CoAP option (RFC 7252 §3.1).

Options are TLV-encoded in messages, sorted by option number. Repeated option numbers create multiple values for that option.

Fields

number: u16

Option number (determines semantics).

value: Vec<u8>

Option value (interpretation depends on the option number).

Implementations

impl CoapOption

pub fn new(number: u16, value: Vec<u8>) -> Self

Creates a new option with the given number and value.

pub fn empty(number: u16) -> Self

Creates an empty option (zero-length value).

pub fn value_as_uint(&self) -> u32

Interprets the option value as a variable-length unsigned integer.

RFC 7252 §3.2: Options with format “uint” use 0-4 bytes in network byte order.

pub fn from_uint(number: u16, value: u32) -> Self

Creates an option with a uint value encoded in the minimum number of bytes.

pub fn value_as_str(&self) -> CoapResult<&str>

Interprets the option value as a UTF-8 string.

Trait Implementations

impl Clone for CoapOption

fn clone(&self) -> CoapOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CoapOption

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

Formats the value using the given formatter.

impl PartialEq for CoapOption

fn eq(&self, other: &CoapOption) -> 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 Eq for CoapOption

impl StructuralPartialEq for CoapOption