A GETDNS for the real host and virtual hosts

The DNS-CLIENT GETDNS can be used for the real host and all virtual hosts. This means that GETDNS need only be started once for all active BCAM hosts and only exists once.

Irrespective of any entries in the application file, the list port of GETDNS is always opened on the real host. This ensures that constant monitoring is no longer required to recognize a newly started virtual host. This is because each user of GETDNS sends its queries directly to the list port on the real host.

The GETDNS implementation of the SOCKETS subsystem runs in the user task of the calling SOCKETS user program and thus under the specifications for virtual BCAM hosts (which apply to SOCKETS programs).