Struct Buffer 

pub struct Buffer {
    inner: BytesMut,
}

Mutable, growable byte container. Used by codecs to build and consume framed payloads, and as an owned container for transport-level payloads.

Fields

inner: BytesMut

Implementations

impl Buffer

pub fn new() -> Self

Constructs a new, empty Buffer.

pub fn from_slice(data: &[u8]) -> Self

Build a Buffer from a slice (copies).

pub fn len(&self) -> usize

Number of bytes in the buffer.

pub fn resize(&mut self, new_size: usize)

Resize the buffer in-place to new_size (filling with zeros if growing).

pub fn extend_from_slice(&mut self, bytes: &[u8])

Append a slice.

pub fn extend(&mut self, other: &Buffer)

Append bytes from another Buffer.

pub fn advance(&mut self, cnt: usize)

Drop the first cnt bytes, keeping the rest.

pub fn is_empty(&self) -> bool

Returns true if the buffer is empty.

pub fn freeze(self) -> Bytes

Freeze into an immutable Bytes. Zero-copy — transfers ownership of the underlying allocation.

Trait Implementations

impl AsMut<[u8]> for Buffer

fn as_mut(&mut self) -> &mut [u8]

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u8]> for Buffer

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Codec<Buffer> for BytesCodec

type Message = Vec<u8>

type Error = Error

fn encode(&self, src: &Vec<u8>, dst: &mut ByteBuffer) -> Result<usize>

Encode a message into the wire buffer.

fn decode(&self, src: &mut ByteBuffer) -> Result<Option<(usize, Vec<u8>)>>

Decode a message from the wire buffer. Returns Some((bytes_consumed, message)) on success, None if more data is needed.

impl Codec<Buffer> for LengthCodec

type Message = Vec<u8>

type Error = Error

fn encode(&self, src: &Vec<u8>, dst: &mut ByteBuffer) -> Result<usize>

Encode a message into the wire buffer.

fn decode(&self, src: &mut ByteBuffer) -> Result<Option<(usize, Vec<u8>)>>

Decode a message from the wire buffer. Returns Some((bytes_consumed, message)) on success, None if more data is needed.

impl Debug for Buffer

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

Formats the value using the given formatter.

impl Default for Buffer

fn default() -> Buffer

Returns the “default value” for a type.