Peer-to-Peer Streaming Peer Protocol (PPSPP)
2015
The Peer-to-Peer Streaming Peer Protocol (PPSPP) is a protocol for
disseminating the same content to a group of interested parties in a
streaming fashion. PPSPP supports streaming of both prerecorded (on-
demand) and live audio/video content. It is based on the peer-to- peer
paradigm, where clients consuming the content are put on equal footing
with the servers initially providing the content, to create a system
where everyone can potentially provide upload bandwidth. It has been
designed to provide short time-till-playback for the end user and to
prevent disruption of the streams by malicious peers. PPSPP has also
been designed to be flexible and extensible. It can use different
mechanisms to optimize peer uploading, prevent freeriding, and work
with different peer discovery schemes (centralized trackers or
Distributed Hash Tables). It supports multiple methods for content
integrity protection and chunk addressing. Designed as a generic
protocol that can run on top of various transport protocols, it
currently runs on top of UDP using Low Extra Delay Background
Transport (LEDBAT) for congestion control.
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