Tries to deserialize a socket control message of a given
level and type. This will ask all known (to GType) subclasses
of gio.SocketControlMessage if they can understand this kind
of message and if so deserialize it into a gio.SocketControlMessage
If there is no implementation for this kind of control message, NULL
will be returned.
Tries to deserialize a socket control message of a given level and type. This will ask all known (to GType) subclasses of gio.SocketControlMessage if they can understand this kind of message and if so deserialize it into a gio.SocketControlMessage
If there is no implementation for this kind of control message, NULL will be returned.