The JSON-RPC 2.0 specification allows the ID field to be any JSON number,
including negative integers and large values. The previous u32 implementation
was limited to 0-4,294,967,295 and couldn't handle negative IDs.
Changes:
- Changed NumberOrString::Number from u32 to i64 to support full JSON number range
- Updated deserializer to handle both signed and unsigned integers
- Modified AtomicU32Provider to use AtomicU64 internally with i64 conversion
- Fixed progress token handling in meta.rs for i64 values
- Added comprehensive test for negative and large request IDs
This ensures full compliance with the JSON-RPC 2.0 specification.
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Co-authored-by: Claude <noreply@anthropic.com>
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