Protocol Considerations for a Prefix- Caching Proxy for Multimedia Streams Stephane Gruber, Jennifer Rexford, and Andrea Basso Proc. World Wide Web Conference,

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Presentation transcript:

Protocol Considerations for a Prefix- Caching Proxy for Multimedia Streams Stephane Gruber, Jennifer Rexford, and Andrea Basso Proc. World Wide Web Conference, May 2000

Prefix-Caching … serverproxyclient … …... cache prefix

Multimedia Streaming Protocol Real-Time Transport Protocol (RTP) source identification sequence number timestamp Real-Time Control Protocol (RTCP) Real-Time Streaming Protocol (RTSP) VCR remote control Similar to HTTP/1.1

Prefix-Caching in RTSP

Linking Prefix and Suffix RTP packet Timestamp Range Request Source identification RTCP Report Proxy Adaptation Transport protocol Additional functions support  Workahead smoothing  Transcoding  …

Implementation Architecture Per-session state Caching Processor and link schedule Testbed

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