Name of method to invoke.
A GVariant tuple with parameters for the signal or NULL if not passing parameters. [allow-none]
Flags from the GDBusCallFlags enumeration.
The timeout in milliseconds (with G_MAXINT meaning "infinite") or -1 to use the proxy default timeout.
A GUnixFDList or NULL. [allow-none]
Return location for a GUnixFDList or NULL. out[allow-none]
A GCancellable or NULL. [allow-none]
NULL if error is set. Otherwise a GVariant tuple with return values. Free with g_variant_unref().
GException on failure.
Like g_dbus_proxy_call_sync() but also takes and returns GUnixFDList objects. This method is only available on UNIX. Since 2.30