# libtmux.control:connection-failure

- **Package:** libtmux/control
- **Language:** Common Lisp
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-lisp/blob/c2e5fc4ed3befda21f45dfa5d5868c38fd138311/src/control.lisp#L116
- **Public owner:** libtmux.control
- **Page:** https://libtmux.org/en/lisp/latest/reference/libtmux-control-connection-failure/

```
(connection-failure connection)
```

Return the retained worker failure condition, or NIL, without I/O.
Conditions retain identity; byte data comes from NEXT-EVENT or AWAIT-REQUEST.

See also: `libtmux.control:connection-cleanup-failures`, `libtmux.control:connection-state`.

## Parameters

- `connection`