# io.github.libtmux.control.ControlClient.ControlClient.attach

- **Module:** io.github.libtmux.control.ControlClient.ControlClient
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/c3517519ee799428a809ce6deb1708c8be289cd1/libtmux/src/main/java/io/github/libtmux/control/ControlClient.java#L86
- **Page:** https://libtmux.org/reference/java/io-github-libtmux-control-controlclient-controlclient-attach/

```
io.github.libtmux.control.ControlClient.ControlClient.attach(config: ServerConfig, session: SessionId) -> ControlClient
```

Attaches a control client to an existing session.

<p>Attaching is what makes tmux push {@code %output}: a control client that never attaches is
told about command replies and nothing else.

## Parameters

- `config` (ServerConfig) — which tmux and which server
- `session` (SessionId) — the session to attach to