Struct SixlowpanUdpNhcRepr 

pub struct SixlowpanUdpNhcRepr {
    pub src_port: u16,
    pub dst_port: u16,
    pub checksum: Option<u16>,
}

The fields of a 6LoWPAN NHC UDP header.

The header starts with the following byte (RFC 6282 § 4.3):

  0   1   2   3   4   5   6   7
+---+---+---+---+---+---+---+---+
| 1 | 1 | 1 | 1 | 0 | C |   P   |
+---+---+---+---+---+---+---+---+

C says whether the checksum is elided, P how much of the ports is. The inline port bits and the checksum follow it.

Fields

src_port: u16

dst_port: u16

checksum: Option<u16>

The checksum. None when it is elided: the receiver must recompute it over the whole datagram.

Implementations

impl UdpNhcRepr

pub fn parse(buf: &[u8]) -> Result<(Self, usize)>

Parse a compressed UDP header from the front of buf.

Returns the header and its length, not counting the payload.

Errors:

• Error if the buffer is shorter than the header, or does not start with a UDP header dispatch.

pub fn buffer_len(&self) -> usize

Return the length of the header this will emit, not counting the payload.

pub fn emit(&self, buf: &mut [u8])

Write the header into the front of buf.

Writes exactly buffer_len bytes.

Panics

Panics if buf is shorter than buffer_len.

Trait Implementations

impl Clone for UdpNhcRepr

fn clone(&self) -> UdpNhcRepr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UdpNhcRepr

impl Debug for UdpNhcRepr

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

Formats the value using the given formatter.

impl Eq for UdpNhcRepr

impl PartialEq for UdpNhcRepr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UdpNhcRepr