Module codec 

Low-level reading and writing of protocol primitives.

Reader is a bounds-checked cursor over a Bytes buffer: every read returns Result, and variable-length data (Reader::read_bytes, strings) is returned as zero-copy slices of the underlying buffer. McWrite adds the protocol’s primitive encodings to BytesMut.

The Decode / Encode traits are implemented by every packet and shared type.

Structs

Reader

Bounds-checked read cursor over a Bytes buffer.

Constants

PREALLOC_LIMIT

Upper bound on the capacity reserved up front for a decoded array; larger arrays grow as elements are actually decoded, so a hostile count cannot force a big allocation.

ZERO_SIZE_ELEMENT_LIMIT

Largest count accepted for arrays whose elements can be zero bytes long.

Traits

Decode

A value that can be decoded from protocol bytes.

Encode

A value that can be encoded to protocol bytes.

McWrite

Protocol primitive encodings on top of BytesMut.

Functions

count_i16

Converts a collection length into an i16 count prefix.

count_i32

Converts a collection length into an i32 count prefix.

count_u8

Converts a collection length into a u8 count prefix.

decode_exact

Decodes a complete value from buf, failing if any bytes are left over.

encode_to_bytes

Encodes a value into a fresh buffer.

read_varint_prefix

Decodes a VarInt from the start of a plain slice. Returns the value and its length.

varint_bytes

Encodes v as a VarInt into a fixed buffer; returns the buffer and the used length.

varint_len

Number of bytes the VarInt encoding of v takes (1..=5).

Type Aliases

DecodeResult

Result alias for decoding.

EncodeResult

Result alias for encoding.