Unverified50% confidenceFactExact time
IPTV 分发存在单播（Unicast）与组播（Multicast）两种模式，运营商封闭网络常用组播节约骨干网带宽，而开放互联网因跨AS组播报文在ISP边界被丢弃几乎全部基于单播 HTTP/HTTPS 传输
1
Sources
50%
Confidence
Long-term
Relevance
7/22/2026
First Seen
Sources
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