[Question] Allow excluding SSE/WebSocket from http.Timeout in Kratos HTTP server

[zongjiye]

Hi,

In my Kratos HTTP server, I configure the timeout like this:
if c.Http.Timeout != nil { opts = append(opts, http.Timeout(c.Http.Timeout.AsDuration())) }
As far as I can tell, this timeout is applied at the whole server level and affects all routes.

However, I don’t want this timeout to apply to SSE (Server-Sent Events) and WebSocket connections, since those are long-lived streams by design. I’ve tried several approaches to exclude those endpoints from the timeout, but haven’t been able to make it work.

Is there a recommended way to:

disable http.Timeout for specific routes, or

skip SSE/WebSocket requests when applying the timeout, or

otherwise configure different timeout behavior for streaming connections?

If this is not currently supported, would you consider adding a way to exclude certain routes or connection types (SSE / WebSocket) from the global http.Timeout?

[dosubot]

Kratos applies the http.Timeout setting globally to all routes via middleware, and there isn't a built-in way to exclude specific routes or connection types (like SSE or WebSocket) from this timeout. The middleware wraps every request context with a timeout, regardless of the route or handler type, and does not inspect the path or headers to conditionally skip the timeout for streaming endpoints source.

If you need to bypass the timeout for SSE/WebSocket endpoints, you can register those handlers using srv.HandleFunc or srv.Handle with a standard http.HandlerFunc. These handlers do not go through the Kratos middleware chain, so the global timeout will not be applied to them source. For all other routes, use the Kratos router and handler signature (func(ctx http.Context) error) to ensure middleware is applied.

There is no documented or idiomatic way to configure different timeout behavior for streaming connections in Kratos as of now. If you need more granular control, you would need to implement custom middleware logic or manually manage handler registration.

SSE support is also a known limitation in the Kratos HTTP gateway, and there is ongoing community interest in improving this area source.

If per-route timeout exclusion is critical for your use case, consider proposing this as a feature request to the maintainers.

To reply, just mention @dosu.

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