# LibTmux.Session.AttachAsync

- **Module:** LibTmux.Session
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/320dc64f4b8b7815842471327a5e6b84a1499bf8/src/LibTmux/Session.Lifecycle.cs#L254
- **Page:** https://libtmux.org/en/dotnet/latest/reference/libtmux-session-attachasync/

```
LibTmux.Session.AttachAsync(request: AttachSessionRequest?, cancellationToken: CancellationToken) -> Task<Session>
```

Attaches a client to this session.

Attaching needs a terminal, so this fails outside one rather than
silently doing nothing.

## Parameters

- `request` (AttachSessionRequest?): Attachment options.
- `cancellationToken` (CancellationToken): Cancels the tmux command.

## Returns

A refreshed handle for this session.