With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:hebis:30:3-656827
	http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/65682 STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/65682
	http://d-nb.info/125000246X/34 STATUS : 301 → Redirecting to : https://d-nb.info/125000246X/34
	https://d-nb.info/125000246X/34 STATUS : 404 → Skipping : https://d-nb.info/125000246X/34
	http://publikationen.ub.uni-frankfurt.de/files/65682/Holzapfel_Lieddatei_E_bis_G.pdf STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/files/65682/Holzapfel_Lieddatei_E_bis_G.pdf

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