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Erik JohnstonandClaude Opus 5.5
dcb7c85dbf
Python validates the body with pydantic as before. Rust parses the same bytes with serde into `SlidingSyncBody`, which follows the pydantic model field for field, including where it tells an explicit `null` from a missing field. Lists and room subscriptions keep document order, and a repeated key keeps its first position and last value, as the dict `json.loads` builds. `SlidingSyncRequest` is the body plus what Python adds: the user and device, the room key and connection position of `pos`, the room key and string suffix of the token the response runs up to, the admin's soft-failed policy, whether the background updates have finished, the excluded rooms and the extension flags. `SlidingSyncHandler._build_rust_request` builds it. The servlet keeps the body's bytes in `SlidingSyncConfig.body_bytes` when the Rust handler is in use. A config built without a request is re-encoded. `tests/rest/client/sliding_sync/test_rust_request.py` parses 400 generated bodies (unknown fields, nulls, repeated keys, escapes) both ways and compares, and checks the re-encoding parses the same. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01R5b7Ruy4cgt27Mjq6Ptxbb