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zeekayandHanzo Dev
05796eb725
The gateway spoke 8=FIX.4.4 and reported a fill as ExecType 1/2 — the pair FIX Latest retired precisely because it duplicated order state into the event field. Both fields carried the same thing, so nothing on the wire distinguished "a trade happened" from "the order is done", and a client could read either. Session layer is now FIXT.1.1; the application layer is FIX.5.0SP2 + EP307, named on the Logon by DefaultApplVerID(1137) and ApplExtID(1156). Every fill is ExecType=F (Trade) and OrdStatus alone moves Partial -> Filled. Nothing depended on the old BeginString, so the wire moved with the semantics instead of straddling both. This is the wire pkg/dexprotocol already documents (150=F, 39=1|2). A partially-filled IOC also never reached a terminal state: the last report said Partial and nothing followed, leaving a client waiting for an end that never came. It now closes with Canceled. Vocabulary, one word per concept: execReport -> execution, gateway OrderFill -> Fill, multisig ExecutionResult -> Result (it holds an error string, never an execution). Deletes the SDK's hand-rolled FIX encoder — it pinned a second protocol version, omitted BodyLength entirely so the acceptor would have rejected every frame, and sendFIXMessage returned nil without sending. Co-authored-by: Hanzo Dev <[email protected]>