Struct Repr

pub struct Repr {
    pub src_port: u16,
    pub dst_port: u16,
    pub length: u16,
}

A high-level representation of an User Datagram Protocol packet.

Fields

src_port: u16

dst_port: u16

length: u16

Implementations

impl Repr

pub fn parse(packet: &udp, checksum: Checksum) -> Result<Repr>

Parse an User Datagram Protocol packet and return a high-level representation.

pub fn buffer_len(&self) -> usize

Return the length of a packet that will be emitted from this high-level representation.

pub fn emit(&self, packet: &mut udp, checksum: Checksum)

Emit a high-level representation into an User Datagram Protocol packet.

Note: In most cases you will want to use Checksum::Ignored. Calculating requires the correct packet data to already be present. However, the payload slice returned from the packet will only be valid after the length is correctly filled in.

However, Checksum::Manual is still useful if the payload was mutated with external means. It could also be possible to update the checksum incrementally if only few bytes are required to have concrete values, however no means are provided in thie library and you’d have to implement such schemes yourself.

Trait Implementations

impl Clone for Repr

fn clone(&self) -> Repr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Repr

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

Formats the value using the given formatter.

impl Display for Repr

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

Formats the value using the given formatter.

impl PartialEq for Repr

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

impl Eq for Repr

impl StructuralPartialEq for Repr