Event Model and Application Programming Interface of TCP-Interactive
Javed Khan, Raid Y. Zaghal · 2003
Interactivity in transport protocol can greatly benefit transport friendly applications. We envision a transport mechanism, which is interactive and can provide event notification to the subscriber of its communication service. We then show a friendly adaptive MPEG-2 video transcoding scheme, which directly interacts with the transport protocol and adjusts its production rate whenever a new event is received from the transport layer. We have recently implemented this concept system. The implementation has two components-- an interactive transport protocol over FreeBSD called iTCP and, a novel symbiotic MPEG-2 full logic transcoder. We have also experimented the real system on the Active Network (ABone) using selected nodes in the U.S. and Europe. In this report we present the performance of this system and report potential dramatic improvement in time-bounded video delivery. In this report we present the application accessible event model and the application programming interface that the application and the symbiotic component can use to interface with the interactive TCP.