Which streaming protocols does Google Cloud API Gateway support?
Google documents incremental HTTP response delivery, Server-Sent Events, WebSockets and bidirectional gRPC streaming for streaming-enabled gateways. The backend must support the protocol selected for the route.
Answered in
Google Cloud API Gateway Can Stream AI Responses, but the Timeout Is Your ProblemGoogle API Gateway adds SSE, WebSocket and gRPC streaming in preview; the gateway’s deadline and backend timeout still determine whether a stream survives.
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