Wraps [method@Gio.
Proxy.connect_async].
| proxy |
a [iface@Gio.Proxy] |
| connection |
a [class@Gio.IOStream] |
| proxy_address |
a [class@Gio.ProxyAddress] |
|
a [class@Dex.Future] that resolves to a [class@Gio.IOStream] or rejects with error. |