Fix: Replace threading.Lock with anyio.Lock for Ray deployment compatibility #1151
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…ibility - Replace threading.Lock() with anyio.Lock() in StreamableHTTPSessionManager - This resolves serialization issues when deploying StreamableHTTP services with Ray - threading.Lock objects cannot be pickled/serialized, causing deployment failures - anyio.Lock provides equivalent functionality while being fully serializable - Update lock usage from 'with' to 'async with' for proper async context
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Replace threading.Lock with anyio.Lock for Ray deployment compatibility
Motivation and Context
When deploying StreamableHTTP services with Ray, we encountered serialization issues because threading.Lock objects cannot be pickled/serialized. This causes deployment failures when Ray tries to serialize the session manager objects across worker processes.
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