Avoid potential attacks via too many open files. Background: Tcl uses still select() for event processing, which has a pretty much hardcoded…
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Avoid potential attacks via too many open files.Background: Tcl uses still select() for event processing, which has a pretty much hardcoded limit of max 1024 files (one has to recompile Tcl, libc, and maybe the kernel). With bgdelivery it is possible to deliver more than 1000 files simultaneously, but Tcl panics, when the number of descriptors is too large. We experienced the problem in a sitation, where the 1000+ requests were produced from a incorrect browser behavior (e.g. iPad issues a series of range requests rapidly without closing the last requests); bgdelivery allows now just one spooling request for a file from a user at one time.
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