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PacketReceiver

Struct PacketReceiver 

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pub struct PacketReceiver { /* private fields */ }
Expand description

Receiver task for handling inbound packets

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impl PacketReceiver

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pub fn new(socket: Arc<UdpSocket>) -> Self

Create a new receiver from a shared socket

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pub async fn recv(&mut self) -> Result<(Bytes, SocketAddr)>

Receive the next packet.

Routes through tokio’s recv_buf_from(&mut BufMut) per crypto-session perf #130. The legacy resize(MAX_PACKET_SIZE, 0) + recv_from(&mut [u8]) shape zero-filled ~1500 bytes per packet just for the kernel to overwrite them on the next syscall — pure wasted memset bandwidth at packet rate. recv_buf_from writes directly into the BytesMut’s spare capacity using BufMut::chunk_mut, so the kernel’s bytes are the first writers and no pre-init is needed.

clear() + reserve(MAX_PACKET_SIZE) returns the buffer to length 0 while keeping the existing allocation; the reserve is a no-op once steady-state capacity is reached. The freeze() at the end transfers ownership of the initialized prefix to the returned Bytes; split() leaves the underlying allocation behind for the next call to reuse via reserve.

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pub async fn recv_parsed(&mut self) -> Result<Option<ParsedPacket>>

Parse the next packet

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impl Debug for PacketReceiver

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

Formats the value using the given formatter. Read more

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