Description This GSocketControlMessage contains a GCredentials instance. It may be sent using g_socket_send_message() and received using g_socket_receive_message() over UNIX sockets (ie: sockets in the G_SOCKET_FAMILY_UNIX family). For an easier way to send and receive credentials over stream-oriented UNIX sockets, see g_unix_connection_send_credentials() and g_unix_connection_receive_credentials(). To receive credentials of a foreign process connected to a socket, use g_socket_get_credentials().