Struct BlockOption 

pub struct BlockOption {
    pub num: u32,
    pub more: bool,
    pub szx: u8,
}

A decoded Block1 or Block2 option value.

RFC 7959 §2.2: The option value encodes three fields in a variable-length unsigned integer:

• Bits 0-2: SZX (block size exponent)
• Bit 3: M (more blocks follow)
• Bits 4+: NUM (block number)

Fields

num: u32

Block number (0-based).

more: bool

Whether more blocks follow this one.

szx: u8

Block size exponent: actual size = 2^(szx + 4).

Implementations

impl BlockOption

pub fn decode(value: u32) -> Self

Decodes a Block option from its wire representation.

RFC 7959 §2.2: The option value is a variable-length unsigned integer with the three least significant bits encoding SZX, bit 3 encoding M, and the remaining upper bits encoding NUM.

pub fn encode(&self) -> u32

Encodes this Block option to its wire representation.

RFC 7959 §2.2: Packs NUM, M, and SZX into a single unsigned integer.

pub fn block_size(&self) -> usize

Returns the block size in bytes for this option’s SZX value.

pub fn offset(&self) -> usize

Returns the byte offset of this block within the full payload.

Trait Implementations

impl Clone for BlockOption

fn clone(&self) -> BlockOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockOption

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

Formats the value using the given formatter.

impl PartialEq for BlockOption

fn eq(&self, other: &BlockOption) -> 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 Copy for BlockOption

impl Eq for BlockOption

impl StructuralPartialEq for BlockOption