Function parse 

pub fn parse(
    payload: &Bytes,
    format: PayloadFormat,
) -> Result<ParsedPayload, CodecError>

Available on crate feature transport only.

Parse a framed payload into a native ParsedPayload.

• PayloadFormat::Json -> sonic_rs (SIMD).
• PayloadFormat::MsgPack -> rmpv (native, no JSON bridge).
• PayloadFormat::Auto -> PayloadFormat::detect then dispatch. An empty blob detects as JSON (matching detect’s contract) and surfaces a CodecError::Json – empty input is not valid JSON.

Errors

Returns CodecError::Json or CodecError::MsgPack when the bytes are malformed for the (detected or declared) format.