Anatomy
The TCP handshake completes and then silence — no response, no RST, nothing. The purest test of whether a client has a real read/idle timeout versus only a connect timeout. Capped server-side at 60s.
Replay it
curl -i https://faultydata.com/r/FD-2026-017
// response appears here
Signature
{Status:0 Headers:map[] Body: Corrupt: Delay:<nil> Flaky:<nil> Sequence:<nil> Drip:<nil> StallAfter:0 Hang:true Phases:[]}