docs(trade): add multi-leg option order docs - #1212
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1.新增多腿期权下单接口，订单查询/详情与 WebSocket 推送补充 multi_leg 字段。
sunli829
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Add `TradeContext.submit_multileg` (POST /v1/trade/order/multileg) for submitting multi-leg option combination orders (vertical spreads, straddles, strangles, collars, etc.), where all legs are placed together as a single strategy order. Expose multi-leg strategy information on order queries and the order push: `Order`, `OrderDetail`, and `PushOrderChanged` gain an optional `multi_leg` field (`MultiLegInfo`), present only for multi-leg option combination orders. Adds the `MultiLegStrategy`, `MultiLegPosition`, and `ContractDirection` enums. Implemented across all SDK layers: Rust core, C, C++, Java, Node.js, and Python (incl. the openapi.pyi stub). Also document in CLAUDE.md the full list of SDK layers that must be kept in sync when adding an API or type. Ref: longbridge/developers#1212
sunli829
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Aug 25, 2026
@ ## Summary Implements the multi-leg option order feature from [longbridge/developers#1212](longbridge/developers#1212) across **all six SDK layers** (Rust core, C, C++, Java, Node.js, Python). ### New API - **`TradeContext.submit_multileg`** → `POST /v1/trade/order/multileg` — submit a multi-leg option combination order (vertical spreads, straddles, strangles, collars, etc.) whose legs are placed together as a single strategy order. Takes `side`, `order_type`, `submitted_quantity`, `strategy` (`MultiLegStrategy`), a list of legs (`symbol` + `ratio_quantity`), and optional `submitted_price` / `remark` / `client_request_id`; returns the existing `SubmitOrderResponse`. ### New response field - `Order` (`today_orders` / `history_orders`), `OrderDetail` (`order_detail`), and the `PushOrderChanged` order-changed event gain an optional **`multi_leg`** field (`MultiLegInfo`), present only for multi-leg option combination orders — carrying `strategy`, `strategy_name`, `multileg_id`, `code`, and the combination `legs` (each with `symbol`, `side`, `position`, `ratio_quantity`, `strike_price`, `expire_date`, `contract_direction`, `contract_size`). - New enums: `MultiLegStrategy`, `MultiLegPosition`, `ContractDirection`. ## Layers & verification | Layer | Verification | | --- | --- | | Rust core | `cargo check` / `clippy --all --all-features` clean; `cargo +nightly fmt` | | C | `cargo build -p longbridge-c` (regenerates `longbridge.h`) | | C++ | `g++ -std=c++17 -fsyntax-only` against regenerated header | | Java | `cargo build -p longbridge-java` + full `javac` compile | | Node.js | `npm run build:debug` (regenerates `index.d.ts` / `index.js`) | | Python | `cargo check`; `openapi.pyi` stub updated by hand | ## Notes - Also documents in `CLAUDE.md` the full list of SDK layers that must be kept in sync when adding an API or type (previously missing C++ and Java). 🤖 Generated with [Claude Code](https://claude.com/claude-code) @ --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: sunli829 <20092316+sunli829@users.noreply.github.com>
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1.新增多腿期权下单接口，订单查询/详情与 WebSocket 推送补充 multi_leg 字段。