[1] draft-singer-appsawg-mcast-url-00 - URLs and HTTP Response Forms for Multicast ( ( 版)) <https://tools.ietf.org/html/draft-singer-appsawg-mcast-url-00#section-6>
[2] draft-singer-appsawg-mcast-url-00 - URLs and HTTP Response Forms for Multicast ( 版) <http://tools.ietf.org/html/draft-singer-appsawg-mcast-url-00>