The relay offers moqt-22, moqt-18 and moqt-16 by ALPN and by
WT-Available-Protocols, and transport::bridge puts a session of another
draft behind its -22 interface: -18 stream by stream, -16 by routing
each request of its one control stream to a stream of its own (Request ID
renumbering, MAX_REQUEST_ID credit, cancel messages). The client side is
the same wrap. tests/drafts.rs runs the two-publisher scenario with WAI
receipts at -18, at -16 and across mixed drafts, FETCH from the cache at
-18 and -16, a refusal by name, and raw -18 and -16 sessions.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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