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conformance · v155
v155 · webtransport-datagram-writable-streams-and-prioritization — conformance probe
10 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.
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| id | contract | kind | verdict | detail |
|---|---|---|---|---|
duplex-interface-exists |
WebTransportDatagramDuplexStream exists (createWritable extends it). spec ↗ | typeof | … | |
createwritable-on-prototype |
WebTransportDatagramDuplexStream.prototype exposes the createWritable method. spec ↗ | script | … | |
writable-interface-extends-writablestream |
WebTransportDatagramsWritable exists and extends WritableStream directly. spec ↗ | script | … | |
sendgroup-sendorder-on-prototype |
WebTransportDatagramsWritable.prototype exposes the mutable sendGroup and sendOrder attributes. spec ↗ | script | … | |
createwritable-defaults |
createWritable() on a connecting transport returns a WritableStream with the WebTransportSendOptions defaults: sendGroup null, sendOrder 0. spec ↗ | script | … | |
sendorder-option-roundtrip-and-mutable |
A sendOrder passed to createWritable is stored (7 in, 7 out) and the attribute is mutable on the live object (assigning 42 reads back 42). spec ↗ | script | … | |
independent-writables |
Two createWritable() calls return distinct stream objects — independent queues, the core of the feature. spec ↗ | script | … | |
non-buffersource-write-rejects-typeerror |
Writing a non-BufferSource into a datagram writable rejects with TypeError (writeDatagrams step 2). spec ↗ | script | … | |
oversized-write-resolves-and-discards |
Writing a datagram larger than maxDatagramSize resolves with undefined (silent discard), rather than rejecting (writeDatagrams step 4). spec ↗ | script | … | |
lane-drain-order-live |
On an established session, queued bytes on a higher-sendOrder datagram writable drain ahead of a lower one's queue. Observing wire order needs a live HTTP/3 endpoint, which this showcase cannot reach. spec ↗ | manual | … |