Xcast is a free and powerful Podcast client for Mac OS X. It is a variation of multicast that supports numerous small multicast sessions by adding all the IP addresses in the IP header's destination field, instead of using a multicast address.
A free, simple yet powerful Podcast client for Mac OS X.
The explicit multi-unicast (Xcast) is a variation of multicast that supports a great number of little multicast sessions.[citation needed] It is done by adding all the IP addresses in the destination field of the IP header, instead of using a multicast address
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