Enum Arriving 

pub enum Arriving {
    Stun,
    Dtls,
    Rtp,
    Unknown,
}

What a datagram arriving on a media port is (RFC 5764 §5.1.2).

One port carries three protocols at once, and §5.1.2 disambiguates them by the first byte alone. The ranges do not overlap because RTP’s version-2 header puts 10 in the top two bits, DTLS content types are 20–63, and STUN’s first two bits are zero.

Variants

Stun

A STUN message — first byte 0 or 1. Relevant once ICE exists; classified here because §5.1.2 classifies it, and silently treating one as RTP would corrupt the sequence state.

Dtls

A DTLS record — first byte 20 to 63.

Rtp

RTP or RTCP — first byte 128 to 191.

Unknown

None of the three. §5.1.2 gives no meaning to these, so they are dropped by name rather than fed to whichever parser happens to be first.

Trait Implementations

impl Clone for Arriving

fn clone(&self) -> Arriving

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Arriving

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

Formats the value using the given formatter.

impl PartialEq for Arriving

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

impl Eq for Arriving

impl StructuralPartialEq for Arriving