[tcpm] RE: draft-moncaster-tcpm-rcv-cheat-02 probabilistic test
Alfred Hönes <ah@tr-sys.de> Fri, 16 November 2007 18:59 UTC
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From: Alfred Hönes <ah@tr-sys.de>
Message-Id: <200711161858.TAA15560@TR-Sys.de>
Subject: [tcpm] RE: draft-moncaster-tcpm-rcv-cheat-02 probabilistic test
To: jheffner@psc.edu, toby.moncaster@bt.com
Date: Fri, 16 Nov 2007 19:58:10 +0100
References: <473B28E0.6040602@psc.edu>
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At Fri, 16 Nov 2007 10:51:27 -0000 , <toby.moncaster at bt.com> wrote: > * Those receivers that are seeking to conceal congestion losses must > have decided they don't need the missing data. This suggests either > they are streaming media off the sender or they are collaborating > with the sender. ... That is exactly the scenario supported by the Space Communication Transport Protocol (SCPS-TP) "BETS" extension to TCP, now shortly discussed in Section 6.5.4 of draft-moncaster-tcpm-rcv-cheat-02: The reciever does not need outdated data, and it announces this (and supporting protocol behavior) by negotiating BETS via TCP option #20; and thus, the sender is aware or the possibility of receiving ACKs for data not arrived at the receiver, and can suppress the test. I suggest that particular applications interested in this "Real-Time Streaming over TCP" should consider implementing enough parts of SCPS-TP to support BETS to coordinate sender and receiver behavior in a manner tailored to these specific requirements. Partial implementation of SCPS-TP is facilitated by the fact that most TCP extensions of SCPS-TP have to be negotiated per connection; if you do not have implemented a feature, just don't negotiate it! Alfred. _______________________________________________ tcpm mailing list tcpm@ietf.org https://www1.ietf.org/mailman/listinfo/tcpm
- [tcpm] draft-moncaster-tcpm-rcv-cheat-02 probabil… John Heffner
- [tcpm] RE: draft-moncaster-tcpm-rcv-cheat-02 prob… toby.moncaster
- [tcpm] RE: draft-moncaster-tcpm-rcv-cheat-02 prob… Alfred Hönes
- [tcpm] Re: draft-moncaster-tcpm-rcv-cheat-02 prob… John Heffner