Struct OptionEncoder 

pub struct OptionEncoder<'a> { /* private fields */ }

Incremental encoder for CoAP-style delta/length option blocks.

The encoder writes directly into a caller-supplied buffer and tracks the last emitted option number so the on-wire delta encoding remains canonical.

Implementations

impl<'a> OptionEncoder<'a>

pub fn new(buf: &'a mut [u8]) -> Self

Create an encoder starting at option number 0.

pub fn with_last_number(buf: &'a mut [u8], last_number: u16) -> Self

Create an encoder that continues from an already-emitted option number.

pub fn put(&mut self, number: u16, value: &[u8]) -> Result<(), EncodeError>

Encode one option value.

pub fn end_marker(&mut self) -> Result<(), EncodeError>

Append the 0xFF end marker for an option block.

pub fn finish(self) -> usize

Finish the encoder and return the number of bytes written.

Trait Implementations

impl<'a> Debug for OptionEncoder<'a>

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

Formats the value using the given formatter.