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spec/ait: add server-side channel continuity - #451
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Server-side counterpart to AIT-597. Add AIT-ST12/AIT-ST12a requiring the server transport to monitor the channel for continuity loss (FAILED, SUSPENDED, DETACHED, or re-attach with resumed:false) and surface it via the transport-level onError callback with ChannelContinuityLost (104006). Active turns are not auto-aborted and the per-turn onError is not invoked — continuity loss is channel-wide, not turn-scoped, and the server's only inbound channel traffic is cancel messages (missing one is survivable). Amend AIT-ST11 to require close() to also stop listening for channel state changes (AIT-ST12) and to be idempotent. Companion SDK PR: https://github.com/ably/ably-ai-transport-js/pull/<TBD> [AIT-695] Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Server-side counterpart to AIT-597. Add AIT-ST12/AIT-ST12a requiring the server transport to monitor the channel for continuity loss (FAILED, SUSPENDED, DETACHED, or re-attach with resumed:false) and surface it via the transport-level onError callback with ChannelContinuityLost (104006). Active turns are not auto-aborted and the per-turn onError is not invoked — continuity loss is channel-wide, not turn-scoped, and the server's only inbound channel traffic is cancel messages (missing one is survivable).
Amend AIT-ST11 to require close() to also stop listening for channel state changes (AIT-ST12) and to be idempotent.
Companion SDK PR: ably/ably-ai-transport-js#65
AIT-695