Google Cloud API Gateway adds streaming support in Public Preview

Google Cloud API Gateway now supports streaming in Public Preview, letting SSE, chunked HTTP, WebSocket and gRPC streaming endpoints sit behind the same gateway and policies as existing APIs. Streaming is enabled with a single --enable-streaming flag at gateway creation, requires no changes to the API spec, and keeps API key enforcement, JWT validation, service account auth and Cloud Logging and Monitoring working as before. Gateways also get a deterministic default hostname of GATEWAY_ID-PROJECT_NUMBER.REGION.gateway.dev, and streams can stay open for up to one hour.