Gary Hoo's Masters Thesis: the DMRP

My thesis described the implementation of an application that stored and replayed streams of RTP (Real-time Protocol) data, using a high-speed distributed storage system (the DPSS) as the storage device. Essentially, the application acted as middleware between the storage system--which knew nothing of RTP or the IP Multicast Backbone (MBone) whence the RTP data originated--and the MBone, which knew nothing of the high-performance storage system. One could think of my application as a sort of MBone VCR--except that Wieland Holfelder already used that name for his own application. Hence, I elected to call my application the DPSS MBone Recorder/Player, or DMRP.

The DMRP fully implements RTPv2, including RTCP. It supports multiple senders on both recording and playback. During recording, the DMRP is a full-fledged separate participant in the session; during playback, the DMRP "masquerades" as all of the participants who transmitted data during the original session, thus giving the illusion that the original participants are "live."

The thesis is available in three formats:

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Credits

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Distributed Security Research Group 		GO TO
Distributed Systems Department (DSD) 		GO TO
National Energy Research Scientific Computing (NERSC) Division 		GO TO
Computing Sciences Directorate 		GO TO
LBNL Main Page 		GO TO
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This document was last updated Thursday, 09-Dec-1999 18:36:34 PST.