[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".

You may review the report below and at:

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;

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.

This errata is currently posted as "Reported". If necessary, please
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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