Function gio_2_0_sys::g_socket_connection_connect_async

pub unsafe extern "C" fn g_socket_connection_connect_async(
    connection: *mut GSocketConnection, 
    address: *mut GSocketAddress, 
    cancellable: *mut GCancellable, 
    callback: Option<GAsyncReadyCallback>, 
    user_data: gpointer
)