APR-19: AirPlay 2 group streaming spike notes - #12
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Records the APR-19 spike finding that pyatv 0.17.0 has no native group API, and outlines the parallel-session fan-out approach that APR-21 and APR-22 should build on. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
docs/spikes/APR-19-airplay2-groups.mdrecording the findings: pyatv 0.17.0 has no native AirPlay 2 group/multi-receiver API (confirmed via source inspection —pyatv.connecttakes a singleBaseConfig,Stream.stream_filetakes a single reader,RaopStreamis one-session-per-receiver,senderSupportsRelay: Falseis hardcoded, and nogroup/leader/followerhooks exist).pyatv.connect+stream_fileper receiver, all fed from a single capture, with per-session fault isolation via per-readerfeed_eof(). The write-up also pins down the concrete constraints this puts on APR-21 (resolve_targetsshape, empty-list handling) and APR-22 (per-deviceStreamReader, per-session failure surface, sync-drift tradeoff, CPU expectations).No production code changes — this is research output only.
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