Re: [rtcweb] RID syntax inconsistencies

Magnus Westerlund <magnus.westerlund@ericsson.com> Tue, 15 January 2019 16:26 UTC

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From: Magnus Westerlund <magnus.westerlund@ericsson.com>
To: "bernard.aboba@gmail.com" <bernard.aboba@gmail.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>
Thread-Topic: [rtcweb] RID syntax inconsistencies
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Date: Tue, 15 Jan 2019 16:25:52 +0000
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Subject: Re: [rtcweb] RID syntax inconsistencies
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Hi,

 

So the main point is the missing ”-” and ”_” i.e. dec 45 and 95 in ASCII. 

 

Are any of these characters used by actual implementations? 

 

If not isn’t the easiest to restrict the MMUSIC RID to the set AVTEXT RID defines? 

 

I guess we should also address the limitation of 255 characters, i.e. change syntax in MMUSIC-RID to:

 

rid-id = 1*255(alpha-numeric)

 

Cheers

 

Magnus Westerlund

 

 

From: rtcweb <rtcweb-bounces@ietf.org> On Behalf Of Bernard Aboba
Sent: den 15 januari 2019 17:04
To: RTCWeb IETF <rtcweb@ietf.org>
Subject: [rtcweb] RID syntax inconsistencies

 

An issue has been raised about inconsistencies in the RID syntax between draft-ietf-mmusic-rid and draft-ietf-avtext-rid . 

 

According to  <https://tools.ietf.org/html/draft-ietf-mmusic-rid-15> https://tools.ietf.org/html/draft-ietf-mmusic-rid-15 , we have:

rid-id = 1*(alpha-numeric / "-" / "_")

 

According to:  <https://tools.ietf.org/html/draft-ietf-avtext-rid-09#section-3> https://tools.ietf.org/html/draft-ietf-avtext-rid-09#section-3 :


As with all SDES items, RtpStreamId and RepairedRtpStreamId are
limited to a total of 255 octets in length. RtpStreamId and
RepairedStreamId are constrained to contain only alphanumeric
characters. For avoidance of doubt, the only allowed byte values for
these IDs are decimal 48 through 57, 65 through 90, and 97 through
122.