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To facilitate creation of new daemons providing XDR RPC services, pull a lot of the libvirtd daemon code into a set of reusable objects. * virNetServer: A server contains one or more services which accept incoming clients. It maintains the list of active clients. It has a list of RPC programs which can be used by clients. When clients produce a complete RPC message, the server passes this onto the corresponding program for handling, and queues any response back with the client. * virNetServerClient: Encapsulates a single client connection. All I/O for the client is handled, reading & writing RPC messages. * virNetServerProgram: Handles processing and dispatch of RPC method calls for a single RPC (program,version). Multiple programs can be registered with the server. * virNetServerService: Encapsulates socket(s) listening for new connections. Each service listens on a single host/port, but may have multiple sockets if on a dual IPv4/6 host. Each new daemon now merely has to define the list of RPC procedures & their handlers. It does not need to deal with any network related functionality at all.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>