[AVTCORE] [Technical Errata Reported] RFC3550 (3914)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 06 March 2014 16:42 UTC

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Cc: hani@pexip.com, avt@ietf.org, rfc-editor@rfc-editor.org
Subject: [AVTCORE] [Technical Errata Reported] RFC3550 (3914)
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The following errata report has been submitted for RFC3550,
"RTP: A Transport Protocol for Real-Time Applications".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=3550&eid=3914

--------------------------------------
Type: Technical
Reported by: Hani Mustafa <hani@pexip.com>

Section: A.1

Original Text
-------------
      init_seq(s, seq);
      s->max_seq = seq - 1;
      s->probation = MIN_SEQUENTIAL;

Corrected Text
--------------
      init_seq(s, seq);
      s->max_seq = seq == 0 ? seq : seq - 1;
      s->probation = MIN_SEQUENTIAL;

Notes
-----
If the first RTP packet has a sequence number of 0, the logic will cause cycles to increase by 1, which will affect "expected number of received packets" calculations.

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--------------------------------------
RFC3550 (draft-ietf-avt-rtp-new-12)
--------------------------------------
Title               : RTP: A Transport Protocol for Real-Time Applications
Publication Date    : July 2003
Author(s)           : H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson
Category            : DRAFT STANDARD
Source              : Audio/Video Transport
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG