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Andrew Dunham bac4890467 net/portmapper: be smarter about selecting a UPnP device ... Previously, we would select the first WANIPConnection2 (and related) client from the root device, without any additional checks. However, some routers expose multiple UPnP devices in various states, and simply picking the first available one can result in attempting to perform a portmap with a device that isn't functional. Instead, mimic what the miniupnpc code does, and prefer devices that are (a) reporting as Connected, and (b) have a valid external IP address. For our use-case, we additionally prefer devices that have an external IP address that's a public address, to increase the likelihood that we can obtain a direct connection from peers. Finally, we split out fetching the root device (getUPnPRootDevice) from selecting the best service within that root device (selectBestService), and add some extensive tests for various UPnP server behaviours. RELNOTE=Improve UPnP portmapping when multiple UPnP services exist Updates #8364 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I71795cd80be6214dfcef0fe83115a5e3fe4b8753		10 months ago
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dnscache	net/dnscache: remove completed TODO	11 months ago
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