Module draft08 

MoQT client implementation for draft-08.

Each draft lives in its own top-level module with a complete, independent implementation: connection, endpoint state machine, event types, observer trait, and per-flow state machines (subscribe, fetch, announce, track status). No code is shared across drafts — each draft carries its own copy because wire-level differences would make a shared layer leaky.

Enable via the draft08 feature.

Differences from draft-07

• SubscribesBlocked (type 0x1A) is a new control message.
• Subscribe AbsoluteRange filter drops end_object; only end_group.
• SubscribeUpdate drops end_object.
• SubscribeDone is restructured: it now carries stream_count instead of the conditional final_group / final_object pair.
• Fetch has two modes (Standalone = 1, Joining = 2). Joining mode takes joining_subscribe_id + preceding_group_offset.
• FetchOk always includes largest_group_id and largest_object_id.
• Subgroup / datagram / fetch object headers carry extension_count + opaque extension bytes.
• New DatagramStatus stream type (0x02) for status-only datagrams.
• ObjectStatus value 4 is now EndOfTrackAndGroup, and value 5 is a new EndOfTrack (track ends but current group does not).

Modules

connection

Outbound MoQT connection with MoQT framing over QUIC.

endpoint

Unified endpoint state machine orchestrating all MoQT protocol flows.

event

Client event types emitted via the observer. Client event types emitted by a draft-08 MoQT connection.

fetch

Fetch lifecycle state machine.

namespace

Announce / SubscribeAnnounces state machines.

observer

Connection observer trait for receiving client events. Connection observer trait for receiving structured events.

session

Session state, setup validation, and subscribe ID allocation. MoQT session lifecycle management (draft-08).

subscription

Subscription lifecycle state machine.

track_status

Track status lifecycle state machine.