Joseph Doherty
eeee3e48a3
ReadAsync allocated a fresh 4-byte array per inbound frame; the GWC-08 pass pooled the payload buffer but left the prefix. Replaced with a per-instance scratch field — the reader is single-consumer by construction (one read loop per WorkerClient, handshake reads complete before the loop starts), so a per-instance buffer is safe and the non-reentrancy that makes it safe is now stated on the class. Pooling four bytes via ArrayPool would cost more than the allocation it saves. Tests: WorkerFrameProtocolTests.ReadAsync_WithMultipleFramesOnOneReader_ ParsesEveryFrame reads five frames of differing payload length through one reader, so a stale prefix carried between calls would misparse.