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docs/features/checked/router/router-streaming-data-transfer.md

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+# Router Streaming Data Transfer
+
+## Module
+Router
+
+## Status
+IMPLEMENTED
+
+## Description
+REQUEST_STREAM_DATA and RESPONSE_STREAM_DATA frame types for chunked streaming, backpressure handling via flow control, and streaming endpoint support in the Microservice SDK.
+
+## Implementation Details
+- **Modules**: `src/Router/__Libraries/StellaOps.Router.Common/`, `src/Router/__Libraries/StellaOps.Microservice/`
+- **Key Classes**:
+  - `RequestDispatcher` (`src/Router/__Libraries/StellaOps.Microservice/RequestDispatcher.cs`) - handles streaming frame dispatch with backpressure
+  - `TypedEndpointAdapter` (`src/Router/__Libraries/StellaOps.Microservice/TypedEndpointAdapter.cs`) - supports streaming request/response patterns
+- **Frame Types**: REQUEST_STREAM_DATA, RESPONSE_STREAM_DATA for chunked transfer
+- **Source**: batch_52/file_01.md
+
+## E2E Test Plan
+- [ ] Send a streaming request with multiple data chunks and verify the endpoint receives all chunks
+- [ ] Verify streaming response: send a request to a streaming endpoint and confirm chunked response delivery
+- [ ] Verify backpressure: send data faster than the receiver processes and confirm flow control signals
+- [ ] Verify large file streaming: transfer a large payload via streaming and confirm complete delivery
+- [ ] Verify streaming cancellation: cancel mid-stream and confirm resources are cleaned up