`GET /ws`
GET/ws
Ws entry.
WS order entry - the bidirectional tier. Same authorization
(Bearer on the upgrade request) + same submit path as REST; the
client replays idempotency_key in client_order_id so resubmits
are deduped by the engine (replay-safe).
Responses
- 101
- 401
- 403
Protocol upgraded (binary FIX/OUCH framing)
Not authenticated
Forbidden