sse.onDisconnect()

`sse.onDisconnect()`

Register one callback for continue-and-notify disconnect policy. Invoked at most once in the same isolate. Shares the original execution deadline; no extra time is granted. continue skips it and cancel disposes the isolate. Registration after disconnect still notifies once while execution remains alive. Callback failures appear in diagnostics. CPU-bound code, a hard timeout or process failure can prevent notification; this is not a durable cleanup guarantee.

Signature

static onDisconnect(callback: () => void | Promise<void>): void;

Example

sse.onDisconnect(async () => { await api.setInstanceCache('connection-state', { disconnected: true }, 300); });

See all sse methods or runtime basics.

Last modified on November 8, 2026

Low-code method reference

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Platform API

`sse.onDisconnect()`

Signature

Example

​sse.onDisconnect()

​Signature

​Example

`sse.onDisconnect()`

Signature

Example