Request to adjust service gateway timeout (for SSE long-lived connections)

Resolved

?胖胖不胖的ai小岛DEVELOPER3/24/2026

Hello, my service uses SSE (Server-Sent Events) for long-lived connections, but the gateway currently disconnects automatically after about 15 minutes. The backend has already implemented a heartbeat mechanism, so the connection should not be dropped due to inactivity.

Service information:

Project name: fin-front
Affected domain:
Frontend service port: 3002
Backend service port: 8008
Current issue: SSE connection is forcibly disconnected by the gateway after about 15 minutes, despite the backend sending heartbeats normally.
Expectation: Adjust the gateway's proxy timeout / read timeout to 24 hours or longer to support SSE long-lived connection scenarios.

Thank you!

3 Replies

BCBohan ChenEMPLOYEE3/25/2026

Hello! The SSE connection disconnects after 15 minutes due to the default proxy read timeout setting of the gateway, which currently cannot be adjusted by users.

For scenarios requiring long-lived connections, we recommend using WebSocket instead of SSE. WebSocket is a full-duplex connection, making it more suitable for long-connection scenarios and not subject to the proxy read timeout limit.

If the cost of migrating to WebSocket is too high, as a temporary workaround, you can implement an automatic reconnection mechanism on the frontend (automatically re-establishing the connection after the SSE disconnects).

We will also relay the request for configurable SSE timeouts to our engineering team.

?胖胖不胖的ai小岛DEVELOPER3/25/2026

Understood. We will implement the frontend automatic reconnection as a temporary workaround for now.

However, as our Agent-based services are scaling rapidly, relying solely on retries isn't ideal for long-term stability. Please continue to coordinate with the engineering team to make the SSE timeout configurable.

Thanks for the support.

AAnonymous3/29/2026

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