# IO_POLL_HANGUP

`import { IO_POLL_HANGUP } from "destack:io/binding";`

Notify when the peer has closed or disconnected.

```ds title="IO_POLL_HANGUP"
const IO_POLL_HANGUP: IoPollInterest
```

[language/library/src/io/binding/poll.ds:35](https://github.com/destack-sh/destack/blob/main/language/library/src/io/binding/poll.ds#L35)