Struct PartialDecode

pub struct PartialDecode { /* private fields */ }

Decodes a QUIC packet’s invariant header

Due to packet number encryption, it is impossible to fully decode a header (which includes a variable-length packet number) without crypto context. The crypto context (represented by the Crypto type in Quinn) is usually part of the Connection, or can be derived from the destination CID for Initial packets.

To cope with this, we decode the invariant header (which should be stable across QUIC versions), which gives us the destination CID and allows us to inspect the version and packet type (which depends on the version). This information allows us to fully decode and decrypt the packet.

Implementations

impl PartialDecode

pub fn new( bytes: BytesMut, cid_parser: &(impl ConnectionIdParser + ?Sized), supported_versions: &[u32], grease_quic_bit: bool, ) -> Result<(Self, Option<BytesMut>), PacketDecodeError>

Begin decoding a QUIC packet from bytes, returning any trailing data not part of that packet

pub fn dst_cid(&self) -> &ConnectionId

The destination connection ID of the packet

pub fn len(&self) -> usize

Length of QUIC packet being decoded

Trait Implementations

impl Debug for PartialDecode

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

Formats the value using the given formatter.