Module endpoint 

Draft-19 MoQT endpoint.

Major changes from draft-18:

• GoAway drops the request_id field entirely; the control-stream and request-stream forms are now identical on the wire.
• PublishBlocked renamed to PublishSkipped (still type 0x0F, wire identical).
• GROUP_ORDER (parameter 0x22) moves from PUBLISH_OK to SUBSCRIBE_TRACKS.
• New Range Filter parameters (SUBGROUP_FILTER 0x25, OBJECTID_FILTER 0x26, PRIORITY_FILTER 0x27, OBJECT_PROPERTY_FILTER 0x28, TRACK_PROPERTY_FILTER 0x29) may appear on SUBSCRIBE / FETCH / SUBSCRIBE_TRACKS / REQUEST_UPDATE.
• RequestError adds CONFLICTING_FILTERS (0x35) and INVALID_FILTER (0x36); DUPLICATE_SUBSCRIPTION (0x19) is removed.

Structs

Endpoint

FetchTrack 🔒

The track one fetch is for, which the fetch’s own state machine does not hold.

TrackBinding 🔒

A Track Alias the peer has attached to a Full Track Name, and the request whose lifetime the attachment follows.

Enums

BindingKind 🔒

Which of the two sequences Section 5.1 names established the subscription that owns a binding, and so which state machine says whether it still has one.

EndpointError

Errors that can occur during endpoint operations.

FilterRejection

Why a peer’s request must be answered with REQUEST_ERROR and INVALID_FILTER.

Constants

MAX_FILTER_RANGES 🔒

The MAX_FILTER_RANGES Setup Option, Section 10.3.1.6.

MAX_REQUEST_UPDATES 🔒

The MAX_REQUEST_UPDATES Setup Option, Section 10.3.1.7.

TRACK_NAMESPACE_PREFIX 🔒

Parameter Type of TRACK_NAMESPACE_PREFIX.

Functions

apply_filter_update 🔒

Apply a REQUEST_UPDATE’s filter parameters to the set already in force.

prefixes_overlap 🔒

Whether two namespace prefixes overlap.

range_filter_parameters 🔒

The Range Filter parameters in parameters, dropping the removals.

request_parameters 🔒

The Message Parameters a request carries, or nothing for a message that is not a request.

setup_varint 🔒

Read a Setup Option’s value as a variable-length integer, or 0 if it is absent.

updated_prefix 🔒

The Track Namespace Prefix a REQUEST_UPDATE asks a namespace subscription to move to, and None when it asks for no such move.