Per-chunk idle watchdog for Provider streams.
A hung SSE or WebSocket stream is cut when no activity arrives within
stream_idle_timeout_ms. HTTP/SSE transports run behind a spawned runner so the
caller can enforce the window; WebSocket clients also reset the deadline on every
received frame (including control frames) via :stream_activity.
Summary
Functions
Run stream_fn behind a per-chunk idle watchdog.
Functions
Run stream_fn behind a per-chunk idle watchdog.
stream_fn receives an activity callback that transports must invoke whenever
they receive a chunk/frame (HTTP via the wrapped reducer; WebSocket via
:stream_activity in opts).