Module message 

Control message types with encode/decode. Draft-17 control message encoding and decoding.

Key differences from draft-16:

• Framing: Type (varint) + Length (16-bit fixed) + Payload.
• Unified SETUP (0x2F00) with delta-encoded KVP options (even/odd).
• Parameters: count-prefixed, delta-encoded types, type-specific value encoding.
• RequestOk/RequestError/PublishOk/PublishDone/FetchOk: no request_id.
• Request messages gain required_request_id_delta.
• New: PublishBlocked. FetchType gains AbsoluteJoining.
• SubscribeOk/Publish/FetchOk gain track_properties after parameters.
• Removed: ClientSetup, ServerSetup, MaxRequestId, RequestsBlocked, Unsubscribe, PublishNamespaceDone, PublishNamespaceCancel, FetchCancel.

Re-exports

pub use crate::error::CodecError;

pub use crate::error::MAX_GOAWAY_URI_LENGTH;

pub use crate::error::MAX_MESSAGE_LENGTH;

pub use crate::error::MAX_NAMESPACE_TUPLE_SIZE;

pub use crate::error::MAX_REASON_PHRASE_LENGTH;

Structs

Fetch

FetchOk

FETCH_OK (0x18). No request_id in draft-17. end_of_track is uint8.

GoAway

Namespace

NamespaceDone

Publish

PublishBlocked

PublishDone

PUBLISH_DONE (0x0B). No request_id in draft-17.

PublishNamespace

PublishOk

PUBLISH_OK (0x1E). No request_id in draft-17.

RequestError

REQUEST_ERROR (0x05). No request_id in draft-17.

RequestOk

REQUEST_OK (0x07). No request_id in draft-17.

RequestUpdate

Setup

Unified SETUP (0x2F00). Replaces ClientSetup/ServerSetup.

Subscribe

SubscribeNamespace

SubscribeOk

SUBSCRIBE_OK (0x04). No request_id in draft-17. Gains track_properties.

TrackStatus

Enums

ControlMessage

FetchPayload

FetchType

MessageType

ParamEncoding 🔒

How a parameter value is encoded on the wire.

Functions

decode_kvp_delta 🔒

Decode delta-encoded KVPs with even/odd convention (for setup options and track properties). Read until buffer is exhausted.

decode_parameters 🔒

Decode a count-prefixed list of parameters with delta-encoded types.

encode_kvp_delta 🔒

Encode delta-encoded KVPs with even/odd convention.

encode_parameters 🔒

Encode a count-prefixed list of parameters with delta-encoded types.

param_encoding 🔒