Struct CoapMessage 

pub struct CoapMessage {
    pub version: u8,
    pub msg_type: CoapMessageType,
    pub code: CoapCode,
    pub message_id: u16,
    pub token: Vec<u8>,
    pub options: Vec<CoapOption>,
    pub payload: Vec<u8>,
}

A parsed CoAP message (RFC 7252 §3).

Represents a complete CoAP datagram including the fixed header, token, options, and optional payload.

Fields

version: u8

Protocol version (must be 1).

msg_type: CoapMessageType

Message type (CON, NON, ACK, RST).

code: CoapCode

Request/response code.

message_id: u16

Message ID for matching requests to responses.

token: Vec<u8>

Token for correlating requests and responses (0-8 bytes).

options: Vec<CoapOption>

CoAP options, sorted by option number.

payload: Vec<u8>

Message payload (after the 0xFF marker).

Implementations

impl CoapMessage

pub fn parse(data: &[u8]) -> CoapResult<Self>

Parses a raw UDP datagram into a CoAP message.

RFC 7252 §3: The message format is a compact binary encoding with a 4-byte fixed header followed by a variable-length token, options, and payload.

pub fn encode(&self) -> Vec<u8>

Serializes this CoAP message to bytes suitable for UDP transmission.

RFC 7252 §3: Options are encoded using delta compression relative to the previous option number.

pub fn uri_path(&self) -> String

Extracts the URI path from Uri-Path options.

RFC 7252 §5.10.1: Multiple Uri-Path options are joined with / to reconstruct the full path.

pub fn content_format(&self) -> Option<u16>

Returns the Content-Format option value, if present.

pub fn block1(&self) -> Option<BlockOption>

Returns the Block1 option, if present.

pub fn block2(&self) -> Option<BlockOption>

Returns the Block2 option, if present.

Trait Implementations

impl Clone for CoapMessage

fn clone(&self) -> CoapMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CoapMessage

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

Formats the value using the given formatter.

impl PartialEq for CoapMessage

fn eq(&self, other: &CoapMessage) -> 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 CoapMessage

impl StructuralPartialEq for CoapMessage