Struct PacketPeek 

pub struct PacketPeek {
    pub packet_type: PacketType,
    pub id: u8,
}

Identity of a framed packet, read without parsing its body.

Correlating a response to a request only needs the first two header bytes. Going through RawPacket::try_from for that would copy the whole transfer and allocate a Vec per logical packet, which is wasteful in a polling loop that runs hundreds of times per second.

Fields

packet_type: PacketType

id: u8

Implementations

impl PacketPeek

pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Read the packet type and transaction ID from a framed transfer.

Returns None when the transfer is too short to contain a header.

pub fn is_ctrl(&self) -> bool

Whether this transfer uses the control header layout.

Trait Implementations

impl Clone for PacketPeek

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PacketPeek

impl Debug for PacketPeek

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

Formats the value using the given formatter.

impl Eq for PacketPeek

impl PartialEq for PacketPeek

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PacketPeek