Document app.stream() write's ~2KB per-message payload limit - #6
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July 12, 2026 14:20
Discovered while sweeping a SAT-solver design at real hardware scale: a single stream write() burst above ~500 32-bit words gets its connection closed by the relay before a response arrives, surfaced client-side as ConnectionClosedError with reason "FPGA is busy with a run job" -- misleading, since it reproduces deterministically by size alone regardless of session/concurrency state (504 words: fine, 576 words: fails, every time). Undocumented previously; callers streaming large arrays need to chunk writes themselves.
Reference docs should tell readers what the limit is and how to stay under it, not how it was found.
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Summary
docs/guides/sdk.md'sapp.stream()section didn't document any limit on burst write size.Test plan
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