Replace the sleeping evaluator and elapsed-time comparison with a client-released evaluation gate. Real HTTP headers and keepalive bytes must arrive before evaluation can finish; a bounded request context only guards against deadlock. Always release evaluation before server cleanup on assertion failure.
A controlled 350ms pre-stream delay fails the former assertion with otherwise correct transport and passes the gated test. Buffered-body and unstarted-response negative controls both fail under the race detector; all seven Issue1640 tests pass ten repetitions after restoring production source.
Contract-Neutral: Test-only ordering repair; readiness transport and runtime contracts are unchanged.
Change-source: pulse-maintainer
pulse-triage[bot]
8ed7bacdb5