UPnP add M-SEARCH for root devices #3933
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Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>
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Following release of OH v4.1M5 some users found that the new Add-on Suggestion Finder was not discovering all UPnP devices on their LAN.
The OH UPnP discovery mechanism currently sends an
M-SEARCHbroadcast with a search targetST: ssdp:allheader -- yet some devices do not respond to broadcasts withST: ssdp:alland only respond to broadcasts withST: upnp:rootdevice.This PR adds a
M-SEARCHbroadcast with search targetST: upnp:rootdevice.The functionality of this PR was tested already live via openhab/openhab-addons#16077
Signed-off-by: Andrew Fiddian-Green software@whitebear.ch