Function gio_sys::g_dtls_connection_shutdown_async

pub unsafe extern "C" fn g_dtls_connection_shutdown_async(
    conn: *mut GDtlsConnection, 
    shutdown_read: gboolean, 
    shutdown_write: gboolean, 
    io_priority: c_int, 
    cancellable: *mut GCancellable, 
    callback: GAsyncReadyCallback, 
    user_data: gpointer
)