Module envelope 

Shared durable envelope codec and validation errors.

Structs

EncodedEnvelope

One encoding and the envelope derived from those exact bytes.

EnvelopeProbe

Identifying prefix of a durable envelope document.

VerifiedEnvelope

An envelope whose framing was verified on read or derived on write.

Enums

EnvelopeCodecError

Failure vocabulary shared by every envelope codec. Messages are envelope-generic; the wrapping error names the object (and its key) the bytes came from.

Functions

decode_json_envelope

Decodes one JSON-bodied envelope, then checks its kind, version, checksum, and payload. Unknown envelope fields are rejected for every durable family.

encode_json_envelope

Serializes the payload once and derives framing from those same bytes.

verify_kind

Requires the probed kind to be exactly expected.

verify_payload_checksum

Requires the stored checksum to match the payload bytes as stored.

verify_version

Requires the probed format version to be exactly what this build writes for kind — no envelope family tolerates version skew.