Crate moqtap_codec 

MoQT wire codec for draft-07 through draft-19.

Each draft sits behind its own feature flag — draft07 through draft19. The default is all-drafts, which enables every one of them.

Shared modules

• varint — variable-length integers, in whichever encoding the draft uses: RFC 9000 Section 16 through draft-16, MoQT’s own from draft-17
• kvp — Key-value parameter pairs used in control messages
• types — Core protocol types (TrackNamespace, Location, enums)
• version — Draft version enum, ALPN and varint encoding per draft
• error — Codec error types and size limits
• auth_token, subscription_filter, range_filter — parameter values that carry a structure rather than opaque bytes
• dispatch, data_dispatch — runtime draft dispatch and draft-neutral object framing

Draft-specific modules

Each draftNN module provides control message and data stream encoding/decoding for that specific draft version. Enable via the corresponding feature flag.

Each also carries an error_codes module holding that draft’s error, status and termination code registries as enums. They are reached only through their draft — draft14::error_codes::SessionErrorCode — and nothing from them is re-exported at the crate root. Registry names recur across drafts while the code points behind them move: every one of the thirteen defines a SessionErrorCode, and drafts that share a spelling do not always share a value. A root-level re-export would collide outright, and disambiguating it would mean coining names that appear in no draft’s table. The draftNN path is what fixes which table a code point came from.

Modules

auth_token

The Token structure carried by the AUTHORIZATION TOKEN parameter.

data_dispatch

Draft-neutral object framing for data streams.

dispatch

Unified types and version-aware decode/encode across drafts.

draft07

MoQT wire codec for draft-07. MoQT wire codec for draft-07.

draft08

MoQT wire codec for draft-08. MoQT wire codec for draft-08.

draft09

MoQT wire codec for draft-09. MoQT wire codec for draft-09.

draft10

MoQT wire codec for draft-10. MoQT wire codec for draft-10.

draft11

MoQT wire codec for draft-11. MoQT wire codec for draft-11.

draft12

MoQT wire codec for draft-12. MoQT wire codec for draft-12.

draft13

MoQT wire codec for draft-13. MoQT wire codec for draft-13.

draft14

MoQT wire codec for draft-14. MoQT wire codec for draft-14.

draft15

MoQT wire codec for draft-15. MoQT wire codec for draft-15.

draft16

MoQT wire codec for draft-16. MoQT wire codec for draft-16.

draft17

MoQT wire codec for draft-17. MoQT wire codec for draft-17.

draft18

MoQT wire codec for draft-18. MoQT wire codec for draft-18.

draft19

MoQT wire codec for draft-19 (latest). MoQT wire codec for draft-19.

error

Codec error types and size limits.

kvp

Key-value parameter pair encoding and decoding.

range_filter

The Range Filters draft-19 carries in parameter types 0x25 through 0x29.

subscription_filter

The subscription filter carried by the SUBSCRIPTION_FILTER parameter, named LOCATION_FILTER from draft-19.

types

Core protocol types shared across drafts.

varint

QUIC variable-length integer encoding and decoding.

version

MoQT draft version enum for runtime dispatch. MoQT draft version enum for runtime dispatch.