Struct FrameHeader 

#[repr(C)]
pub struct FrameHeader {
    pub len: u32,
    pub opcode: u16,
    pub flags: u16,
    pub request_id: u32,
    pub status: i32,
}

16-byte little-endian pipe frame header. to_bytes/from_bytes are pure byte conversions — the MAX_PAYLOAD_LEN policy lives in fmf-proto’s decode_header/read_frame.

Fields

len: u32

Payload length in bytes (the header itself excluded).

opcode: u16

Frame operation code (request/response/event kind).

flags: u16

Per-opcode bit flags.

request_id: u32

Request/response correlation; 0 on event pushes.

status: i32

Status code (crate::codes); meaningful on responses only.

Implementations

impl FrameHeader

pub const LEN: usize

Size of the frame header in bytes (16).

pub fn to_bytes(self) -> [u8; 16]

Serializes the header to its 16-byte little-endian wire form.

pub const fn from_bytes(b: &[u8; 16]) -> Self

Parses a header from its 16-byte little-endian wire form.

Trait Implementations

impl Clone for FrameHeader

fn clone(&self) -> FrameHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FrameHeader

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

Formats the value using the given formatter.

impl PartialEq for FrameHeader

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

impl Eq for FrameHeader

impl StructuralPartialEq for FrameHeader