Doing a search on https://metacpan.org/ for "xml stream", found these two modules that might help you out: XML::Stream and XML::Atom::Stream. Perhaps one of those modules might work better for what you're trying to do or might help you figure out how handle/parse streaming XML data.

In reply to Re: XML Parsing from URL by dasgar
in thread SOLVED: XML Parsing from URL by jshank

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