feat: implement Streamable HTTP transport and refactor SSE transport to reactive streams #337
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…to reactive streams This change imporves the transport layer with reactive patterns and adds support for the latest MCP specification while maintaining backward compatibility with existing SSE transport. - Add HttpClientStreamableHttpTransport implementing 2025-03-26 MCP Streamable HTTP spec - Add ResponseSubscribers utility for handling SSE and JSON HTTP responses - Refactor HttpClientSseClientTransport to use reactive streams instead of CompletableFuture - Replace FlowSseClient with direct reactive stream handling - Use Disposable-based connection management instead of CountDownLatch - Replace message endpoint discovery with Sinks.One approach - Add resiliency tests using Toxiproxy for network failure scenarios - Minor type safety improvements in StdioClientTransport and DefaultMcpTransportStream Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Add proper exception handling with CompletableFuture.exceptionallyCompose for async HTTP operations - Add test for specific exception type handling in resiliency tests This change makes the HTTP client transports more robust by ensuring exceptions are properly propagated. Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
9 tasks
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Replace exceptionallyCompose with whenComplete for better async error handling - Make ResponseSubscribers class package-private Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
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This change improves the transport layer with reactive patterns and adds support for the latest MCP specification while maintaining backward compatibility with existing SSE transport.