Re: [Uri-review] Request for URI schemes assigned to OPC UA
Ted Hardie <ted.ietf@gmail.com> Tue, 23 May 2017 15:43 UTC
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From: Ted Hardie <ted.ietf@gmail.com>
Date: Tue, 23 May 2017 08:34:50 -0700
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To: Randy Armstrong <randy.armstrong@opcfoundation.org>
Cc: Graham Klyne <gk@ninebynine.org>, "uri-review@ietf.org" <uri-review@ietf.org>, TCB <TCB@opcfoundation.org>
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Subject: Re: [Uri-review] Request for URI schemes assigned to OPC UA
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On Tue, May 23, 2017 at 5:30 AM, Randy Armstrong < randy.armstrong@opcfoundation.org> wrote: > 1) We use the schemes for URLs that identify multiple network paths to a > single resource which is identified with a URI that uses the 'urn' scheme. > It is not clear to me that registration is required for this usage. Please > advise. > > > Would you mind identify which URN nid you are using? I did not see one listed here: https://www.iana.org/assignments/urn-namespaces/urn-namespaces.xhtml#urn-namespaces-1 that was obvious. regards, Ted > 2) The specs is an IEC specification as well (see https://webstore.iec.ch/ > publication/21993 ). In addition, the text quoted is old. Anyone can > download the specifications from the OPC Foundation website today. > > > > > > > > > > > > > > ------------------------------ > *From:* Graham Klyne <gk@ninebynine.org> > *Sent:* Tuesday, May 23, 2017 2:07:11 AM > *To:* Randy Armstrong; uri-review@ietf.org > *Cc:* TCB > *Subject:* Re: [Uri-review] Request for URI schemes assigned to OPC UA > > I have two objections here to permanent registration: > > 1. The specifications appear to be non-open "Note: Access to > specifications and > developer resources are available to OPC Foundation members only." > > 2. The use of multiple URI schemes to access the same resource goes > against > principles of web architecture [http://www.w3.org/TR/webarch/#uri-aliases > ]. > > This topic has been discussed previously on this list: see thread at [1]. > > [1] > https://mailarchive.ietf.org/arch/search/?email_list=uri- > review&gbt=1&index=ze2I30iloSGZxlP2vAeCWcPOWus > > #g > -- > > > > On 22/05/2017 22:04, Randy Armstrong wrote: > > Scheme name: > > > > opc.tcp : OPC UA Connection Protocol over TCP/IP > > opc.amqp : OPC UA Connection Protocol over AMQP > > opc.wss : OPC UA Connection Protocol over WebSockets > > > > We expect to add new schemes as time goes on. > > > > Status: permanent > > > > Applications/protocols that use this scheme name: > > > > Applications which implement the OPC UA Connection Protocol defined by > the OPC Unified Architecture specification: > > https://opcfoundation.org/developer-tools/specifications-unified- > architecture > > > > The opc.tcp scheme has been in use in the field for about 10 years (we > were unaware of the registration process). > > Note that the OPC Foundation has a trademark on the term "OPC" (see US > Trademark #78732560) > > > > Contact: > > Randy Armstrong > > tcb@opcfoundation.org > > > > Change controller: > > OPC Foundation > > https://opcfoundation.org/ > > > > References: > > The protocols and schemes are defined in Part 6: Mappings: > > http://www.opcfoundation.org/UA/Part6/ > > > > _______________________________________________ > > Uri-review mailing list > > Uri-review@ietf.org > > https://www.ietf.org/mailman/listinfo/uri-review > > > > _______________________________________________ > Uri-review mailing list > Uri-review@ietf.org > https://www.ietf.org/mailman/listinfo/uri-review > >
- [Uri-review] Request for URI schemes assigned to … Randy Armstrong
- Re: [Uri-review] Request for URI schemes assigned… Graham Klyne
- Re: [Uri-review] Request for URI schemes assigned… Randy Armstrong
- Re: [Uri-review] Request for URI schemes assigned… Ted Hardie
- Re: [Uri-review] Request for URI schemes assigned… Randy Armstrong
- Re: [Uri-review] Request for URI schemes assigned… Ted Hardie
- Re: [Uri-review] Request for URI schemes assigned… Randy Armstrong
- Re: [Uri-review] Request for URI schemes assigned… Graham Klyne
- Re: [Uri-review] Request for URI schemes assigned… Graham Klyne