Function gio_sys::g_socket_client_connect_to_host_async

pub unsafe extern "C" fn g_socket_client_connect_to_host_async(
    client: *mut GSocketClient, 
    host_and_port: *const c_char, 
    default_port: u16, 
    cancellable: *mut GCancellable, 
    callback: GAsyncReadyCallback, 
    user_data: gpointer
)