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A multi-threaded client with event loop may crash if one of its threads closes a connection while event loop is in the middle of sending keep-alive message (either request or response). The right place for it is inside virNetClientIOEventLoop() between poll() and virNetClientLock(). We should only close a connection directly if no-one is using it and defer the closing to the last user otherwise. So far we only did so if the close was initiated by keep-alive timeout.
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>