forked from solid/notifications
-
Notifications
You must be signed in to change notification settings - Fork 0
/
linkeddatanotifications-subscription-2021.html
485 lines (424 loc) · 35.6 KB
/
linkeddatanotifications-subscription-2021.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta charset="utf-8" />
<title>Solid Notifications: LinkedDataNotificationsSubscription2021</title>
<meta content="width=device-width, initial-scale=1" name="viewport" />
<link href="https://www.w3.org/StyleSheets/TR/2021/W3C-ED" media="all" rel="stylesheet" title="W3C-ED" />
<style>
body {
counter-reset:section;
counter-reset:sub-section;
}
em.rfc2119 { color: #900; }
code, samp { color: #c83500; }
pre code, pre samp { color: #000; }
dfn { font-weight:inherit; }
.do.fragment a { border-bottom:0; }
.do.fragment a:hover { background:none; border-bottom:0; }
section figure pre { margin:1em 0; display:block; }
cite .bibref { font-style: normal; }
.tabs nav ul li { margin:0; }
div.issue, div.note, div.warning {
clear: both;
margin: 1em 0;
padding: 1em 1.2em 0.5em;
position: relative;
}
div.issue h3, div.note h3,
div.issue h4, div.note h4,
div.issue h5, div.note h5 {
margin:0;
font-weight:normal;
font-style:normal;
}
div.issue h3 > span, div.note h3 > span,
div.issue h4 > span, div.note h4 > span,
div.issue h5 > span, div.note h5 > span {
text-transform: uppercase;
}
div.issue h3, div.issue h4, div.issue h5 {
color:#ae1e1e;
}
div.note h3, div.note h4, div.note h5 {
color:#178217;
}
figure .example-h {
margin-top:0;
text-align: left;
color:#827017;
}
figure .example-h > span {
text-transform: uppercase;
}
header address a[href] {
float: right;
margin: 1rem 0 0.2rem 0.4rem;
background: transparent none repeat scroll 0 0;
border: medium none;
text-decoration: none;
}
header address img[src*="logos/W3C"] {
background: #1a5e9a none repeat scroll 0 0;
border-color: #1a5e9a;
border-image: none;
border-radius: 0.4rem;
border-style: solid;
border-width: 0.65rem 0.7rem 0.6rem;
color: white;
display: block;
font-weight: bold;
}
main article > h1 {
font-size: 220%;
font-weight:bold;
}
article section:not([id=abstract]):not([id=sotd]):not([id=references]):not([id=appendix]):not([id=acknowledgements]):not([id=change-log]):not([id=exit-criteria]) {
counter-increment:section;
counter-reset:sub-section;
}
article section:not([id=abstract]):not([id=sotd]):not([id=references]):not([id=appendix]):not([id=acknowledgements]):not([id=change-log]) section:not([id$=references]):not([id=exit-criteria]) {
counter-increment:sub-section;
counter-reset:sub-sub-section;
}
article section:not([id=abstract]):not([id=sotd]):not([id=references]):not([id=appendix]):not([id=acknowledgements]):not([id=change-log]) section:not([id$=references]):not([id=exit-criteria]) section {
counter-increment:sub-sub-section;
counter-reset:sub-sub-sub-section;
}
article section:not([id=abstract]):not([id=sotd]):not([id=references]):not([id=appendix]):not([id=acknowledgements]):not([id=change-log]) section:not([id$=references]):not([id=exit-criteria]) section section {
counter-increment:sub-sub-sub-section;
counter-reset:sub-sub-sub-sub-section;
}
article section:not([id=abstract]):not([id=sotd]):not([id=references]):not([id=appendix]):not([id=acknowledgements]):not([id=change-log]):not([id=exit-criteria]):not([id^=table-of-]) > h2:before {
content:counter(section) ".\00a0";
}
section:not([id$=references]):not([id^=change-log]):not([id=exit-criteria]) > h3:before {
content:counter(section) "." counter(sub-section) "\00a0";
}
section > h4:before {
content:counter(section)"." counter(sub-section) "." counter(sub-sub-section) "\00a0";
}
#acknowledgements ul { padding: 0; margin:0 }
#acknowledgements li { display:inline; }
#acknowledgements li:after { content: ", "; }
#acknowledgements li:last-child:after { content: ""; }
aside.do { overflow:inherit; }
aside.do blockquote {
padding: 0; border: 0; margin: 0;
}
dl[id^="document-"] ul {
padding-left:0;
list-style-type:none;
}
dl [rel~="odrl:action"],
dl [rel~="odrl:action"] li {
display: inline;
}
dl [rel~="odrl:action"] li:after {
content: ",";
}
dl [rel~="odrl:action"] li:last-child:after {
content: "";
}
</style>
<link href="https://dokie.li/media/css/dokieli.css" media="all" rel="stylesheet" />
<script src="https://dokie.li/scripts/dokieli.js" async=""></script>
</head>
<body about="" prefix="rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# rdfs: http://www.w3.org/2000/01/rdf-schema# owl: http://www.w3.org/2002/07/owl# xsd: http://www.w3.org/2001/XMLSchema# dcterms: http://purl.org/dc/terms/ skos: http://www.w3.org/2004/02/skos/core# prov: http://www.w3.org/ns/prov# mem: http://mementoweb.org/ns# qb: http://purl.org/linked-data/cube# schema: http://schema.org/ doap: http://usefulinc.com/ns/doap# deo: http://purl.org/spar/deo/ fabio: http://purl.org/spar/fabio/ cito: http://purl.org/spar/cito/ as: https://www.w3.org/ns/activitystreams# ldp: http://www.w3.org/ns/ldp# earl: http://www.w3.org/ns/earl# spec: http://www.w3.org/ns/spec# rel: https://www.w3.org/ns/iana/link-relations/relation# odrl: http://www.w3.org/ns/odrl/2/" typeof="schema:CreativeWork prov:Entity as:Article">
<header>
<address>
<a class="logo" href="https://solidproject.org/"><img height="66" width="72" alt="Solid Project" src="https://solidproject.org/TR/solid.svg"/></a>
</address>
</header>
<main>
<article about="" typeof="schema:Article doap:Specification">
<h1 property="schema:name">LinkedDataNotificationsSubscription2021</h1>
<h2>Editor’s Draft, 2021-12-23</h2>
<details open="">
<summary>More details about this document</summary>
<dl id="document-identifier">
<dt>This version</dt>
<dd><a href="https://solid.github.io/notifications/linkeddatanotifications-subscription-2021" rel="owl:sameAs">https://solid.github.io/notifications/linkeddatanotifications-subscription-2021</a></dd>
</dl>
<dl id="document-latest-version">
<dt>Latest version</dt>
<dd><a href="https://solid.github.io/notifications/linkeddatanotifications-subscription-2021" rel="rel:latest-version">https://solid.github.io/notifications/linkeddatanotifications-subscription-2021</a></dd>
</dl>
<div id="authors">
<dl id="author-name">
<dt>Editors</dt>
<dd id="Sarven-Capadisli"><span about="" rel="schema:creator schema:editor"><span about="https://csarven.ca/#i" typeof="schema:Person"><a rel="schema:url" href="https://csarven.ca/"><span about="https://csarven.ca/#i" property="schema:name"><span property="schema:givenName">Sarven</span> <span property="schema:familyName">Capadisli</span></span></a></span></span></dd>
</dl>
</div>
<dl id="document-created">
<dt>Created</dt>
<dd><time content="2021-12-23T00:00:00Z" datatype="xsd:dateTime" datetime="2021-12-23T00:00:00Z" property="schema:dateCreated">2021-12-23</time></dd>
</dl>
<dl id="document-published">
<dt>Published</dt>
<dd><time content="2021-12-23T00:00:00Z" datatype="xsd:dateTime" datetime="2021-12-23T00:00:00Z" property="schema:datePublished">2021-12-23</time></dd>
</dl>
<dl id="document-modified">
<dt>Modified</dt>
<dd><time content="2021-12-23T00:00:00Z" datatype="xsd:dateTime" datetime="2021-12-23T00:00:00Z" property="schema:dateModified">2021-12-23</time></dd>
</dl>
<dl id="document-repository">
<dt>Repository</dt>
<dd><a href="https://github.com/solid/notifications" rel="doap:repository">GitHub</a></dd>
<dd><a href="https://github.com/solid/notifications/issues" rel="doap:bug-database">Issues</a></dd>
</dl>
<dl id="document-language">
<dt>Language</dt>
<dd><span content="en" lang="" property="dcterms:language" xml:lang="">English</span></dd>
</dl>
<dl id="document-license">
<dt>License</dt>
<dd><a href="http://purl.org/NET/rdflicense/MIT1.0" rel="schema:license">MIT License</a></dd>
</dl>
<dl id="document-status">
<dt>Document Status</dt>
<dd prefix="pso: http://purl.org/spar/pso/" rel="pso:holdsStatusInTime" resource="#a23256bd-feda-4af2-a3fb-dfbb2194c377"><span rel="pso:withStatus" resource="http://purl.org/spar/pso/draft" typeof="pso:PublicationStatus">Editor’s Draft</span></dd>
</dl>
<dl id="document-in-reply-to">
<dt>In Reply To</dt>
<dd><a href="https://solidproject.org/origin" rel="as:inReplyTo">Solid Origin</a></dd>
<dd><a href="https://solid.github.io/notifications/protocol" rel="as:inReplyTo">Solid Notifications Protocol</a></dd>
<dd><a href="https://github.com/solid/process/blob/main/notifications-panel-charter.md" rel="as:inReplyTo">Notifications Panel Charter</a></dd>
</dl>
<dl id="document-policy">
<dt>Policy</dt>
<dd>
<dl id="document-policy-offer" rel="odrl:hasPolicy" resource="#document-policy-offer" typeof="odrl:Policy">
<dt>Rule</dt>
<dd><a about="#document-policy-offer" href="https://www.w3.org/TR/odrl-vocab/#term-Offer" typeof="odrl:Offer">Offer</a></dd>
<dt>Unique Identifier</dt>
<dd><a href="https://solid.github.io/notifications/linkeddatanotifications-subscription-2021#document-policy-offer" rel="odrl:uid">https://solid.github.io/notifications/linkeddatanotifications-subscription-2021#document-policy-offer</a></dd>
<dt>Target</dt>
<dd><a href="https://solid.github.io/notifications/linkeddatanotifications-subscription-2021" rel="odrl:target">https://solid.github.io/notifications/linkeddatanotifications-subscription-2021</a></dd>
<dt>Permission</dt>
<dd>
<dl id="document-permission" rel="odrl:permission" resource="#document-permission" typeof="odrl:Permission">
<dt>Assigner</dt>
<dd><a rel="odrl:assigner" href="https://www.w3.org/community/solid/">W3C Solid Community Group</a></dd>
<dt>Action</dt>
<dd>
<ul rel="odrl:action">
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-aggregate" resource="odrl:aggregate">Aggregate</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-archive" resource="odrl:archive">Archive</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-concurrentUse" resource="odrl:concurrentUse">Concurrent Use</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-DerivativeWorks" resource="http://creativecommons.org/ns#DerivativeWorks">Derivative Works</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-derive" resource="odrl:derive">Derive</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-digitize" resource="odrl:digitize">Digitize</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-display" resource="odrl:display">Display</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-Distribution" resource="http://creativecommons.org/ns#Distribution">Distribution</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-index" resource="odrl:index">Index</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-inform" resource="odrl:inform">Inform</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-install" resource="odrl:install">Install</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-Notice" resource="http://creativecommons.org/ns#Notice">Notice</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-present" resource="odrl:present">Present</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-print" resource="odrl:print">Print</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-read" resource="odrl:read">Read</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-reproduce" resource="odrl:reproduce">Reproduce</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-Reproduction" resource="http://creativecommons.org/ns#Reproduction">Reproduction</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-stream" resource="odrl:stream">Stream</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-synchronize" resource="odrl:synchronize">Synchronize</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-textToSpeech" resource="odrl:textToSpeech">Text-to-speech</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-transform" resource="odrl:transform">Transform</a></li>
<li><a href="https://www.w3.org/TR/odrl-vocab/#term-translate" resource="odrl:translate">Translate</a></li>
</ul>
</dd>
</dl>
</dd>
</dl>
</dd>
</dl>
</details>
<p class="copyright">Copyright © 2021 <a href="http://www.w3.org/community/solid/">W3C Solid Community Group</a>.</p>
<div datatype="rdf:HTML" id="content" property="schema:description">
<section id="abstract">
<h2>Abstract</h2>
<div datatype="rdf:HTML" property="schema:abstract">
<p>The <cite><a href="https://solid.github.io/notifications/protocol" rel="cito:discusses">Solid Notifications Protocol</a></cite> defines a set of interaction patterns for agents to establish subscriptions to resources in a <cite><a href="https://solidproject.org/TR/2021/protocol-20211217#storage" rel="cito:discusses">Solid Storage</a></cite>. This specification defines a <em>subscription type</em> to enable the delivery of change notifications about a resource to an <cite><a href="https://www.w3.org/TR/ldn/" rel="cito:discusses">Linked Data Notifications</a></cite> inbox.</p>
</div>
</section>
<section id="sotd" inlist="" rel="schema:hasPart" resource="#sotd">
<h2 property="schema:name">Status of This Document</h2>
<div property="schema:description" datatype="rdf:HTML">
<p>This section describes the status of this document at the time of its publication.</p>
<p>This document was published by the <a href="https://www.w3.org/community/solid/">Solid Community Group</a> as an <em>Editor’s Draft</em>. The sections that have been incorporated have been reviewed following the <a href="https://github.com/solid/process">Solid process</a>. However, the information in this document is still subject to change. You are invited to <a href="https://github.com/solid/specification/issues">contribute</a> any feedback, comments, or questions you might have.</p>
<p>Publication as an <em>Editor’s Draft</em> does not imply endorsement by the <abbr title="World Wide Web Consortium">W3C</abbr> Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.</p>
<p>This document was produced by a group operating under the <a href="https://www.w3.org/community/about/agreements/cla/">W3C Community Contributor License Agreement (CLA)</a>. A human-readable <a href="https://www.w3.org/community/about/agreements/cla-deed/">summary</a> is available.</p>
</div>
</section>
<nav id="toc">
<h2 id="table-of-contents">Table of Contents</h2>
<div>
<ol class="toc">
<li class="tocline">
<a class="tocxref" href="#abstract">Abstract</a>
</li>
<li class="tocline">
<a class="tocxref" href="#sotd">Status of This Document</a>
</li>
<li class="tocline">
<a class="tocxref" href="#introduction"><span class="secno">1</span> <span class="content">Introduction</span></a>
<ol>
<li><a href="#terminology"><span class="secno">1.2</span> <span class="content">Terminology</span></a></li>
<li><a href="#overview"><span class="secno">1.3</span> <span class="content">Overview</span></a></li>
<li><a href="#conformance"><span class="secno">1.4</span> <span class="content">Conformance</span></a></li>
</ol>
</li>
<li class="tocline">
<a class="tocxref" href="#subscription-type"><span class="secno">2</span> <span class="content">LinkedDataNotificationsSubscription2021 Type</span></a>
<ol>
<li class="tocline">
<a class="tocxref" href="#linkeddatanotifications-subscription"><span class="secno">2.1</span> Subscription Example</a>
</li>
</ol>
</li>
<li class="tocline">
<a class="tocxref" href="#authentication-authorization"><span class="secno">3</span> <span class="content">Authentication and Authorization</span></a>
</li>
<li class="tocline">
<a class="tocxref" href="#references"><span class="secno"></span> <span class="content">References</span></a>
<ol>
<li><a href="#normative-references"><span class="secno"></span> <span class="content">Normative References</span></a></li>
</ol>
</li>
</ol>
</div>
</nav>
<section id="introduction" inlist="" rel="schema:hasPart" resource="#introduction">
<h2 about="#introduction" property="schema:name" typeof="deo:Introduction">Introduction</h2>
<div datatype="rdf:HTML" property="schema:description">
<p><em>This section is non-normative.</em></p>
<p id="motivation" rel="schema:hasPart" resource="#motivation" typeof="deo:Motivation"><span datatype="rdf:HTML" property="schema:description">The <cite><a href="https://solid.github.io/notifications/protocol">Solid Notifications Protocol</a></cite> describes a general pattern by which agents can be notified when a Solid Resource changes. This specification defines a <em>subscription type</em> to enable the delivery of change notifications about a resource to <cite><a href="https://www.w3.org/TR/ldn/" rel="cito:discusses">Linked Data Notifications</a></cite> inbox.</span></p>
<p>This specification is for:</p>
<ul rel="schema:audience">
<li><a href="http://data.europa.eu/esco/occupation/a7c1d23d-aeca-4bee-9a08-5993ed98b135">Resource server developers</a> who wish to enable clients to listen for updates to particular resources.</li>
<li><a href="http://data.europa.eu/esco/occupation/c40a2919-48a9-40ea-b506-1f34f693496d">Application developers</a> who wish to implement a client to listen for updates to particular resources.</li>
</ul>
<!-- TODO define terminology -->
<section class="todo" id="terminology" inlist="" rel="schema:hasPart" resource="#terminology" typeof="skos:ConceptScheme">
<h3 property="schema:name skos:prefLabel">Terminology</h3>
<div datatype="rdf:HTML" property="schema:description">
<p><em>This section is non-normative.</em></p>
<p>This document uses terminology from the <cite><a href="https://solid.github.io/notifications/protocol">Solid Notification Protocol</a></cite>, including <q cite="https://solid.github.io/notifications/protocol#notification-subscription-api">subscription API</q>. This document also uses terms from <cite><a href="https://datatracker.ietf.org/doc/html/rfc6749">The OAuth 2.0 Authorization Framework</a></cite> specification, including <q>resource server</q>, <q>authorization server</q>, <q>access token</q>, and <q>client</q>, as well as terms from the <cite><a href="https://www.w3.org/TR/websub/">WebSub</a></cite> specification, including <q cite="https://www.w3.org/TR/websub/#dfn-topic">topic</q>.</p>
</div>
</section>
<section class="todo" id="overview" inlist="" rel="schema:hasPart" resource="#overview">
<h3 property="schema:name">Overview</h3>
<div datatype="rdf:HTML" property="schema:description">
<p><em>This section is non-normative.</em></p>
<p>The following diagram shows the high-level interactions involved in this flow. How a client retrieves an access token for step 5 is outside the scope of this document.</p>
<figure id="solid-linkeddatanotifications-flow" rel="schema:hasPart" resource="#solid-linkeddatanotifications-flow">
<img src="linkeddatanotifications-subscription-2021-flow.png" height="318" rel="schema:image" width="640" />
<figcaption property="schema:name">Solid LinkedDataNotificationsSubscription2021 Flow</figcaption>
</figure>
</div>
</section>
<section id="conformance" inlist="" rel="schema:hasPart" resource="#conformance">
<h3 property="schema:name">Conformance</h3>
<div datatype="rdf:HTML" property="schema:description">
<p>All assertions, diagrams, examples, and notes are non-normative, as are all sections explicitly marked non-normative. Everything else is normative.</p>
<p>The key words “MUST” and “SHOULD” are to be interpreted as described in <cite><a href="https://tools.ietf.org/html/bcp14" rel="rdfs:seeAlso">BCP 14</a></cite> [<cite><a class="bibref" href="#bib-rfc2119">RFC2119</a></cite>] [<cite><a class="bibref" href="#bib-rfc8174">RFC8174</a></cite>] when, and only when, they appear in all capitals, as shown here.</p>
</div>
</section>
</div>
</section>
<section id="subscription-type" inlist="" rel="schema:hasPart" resource="#subscription-type">
<h2 property="schema:name">LinkedDataNotificationsSubscription2021 Type</h2>
<div datatype="rdf:HTML" property="schema:description">
<p>This specification defines the <code>LinkedDataNotificationsSubscription2021</code> type for use with Solid Notifications subscriptions. The URI of the subscription type is <code>http://www.w3.org/ns/solid/notification#LinkedDataNotificationsSubscription2021</code>.</p>
<p class="issue">The URI and definition of the subscription type is pending the approval of JSON-LD Context and the Notification vocabulary: <a href="https://github.com/solid/vocab/pull/62/">https://github.com/solid/vocab/pull/62/</a>.</p>
<p>An <code>LinkedDataNotificationsSubscription2021</code> API MUST conform to the <cite><a href="https://solid.github.io/notifications/protocol#discovery">Solid Notifications Protocol</a></cite> [<cite><a class="bibref" href="#bib-solid-notifications">SOLID-NOTIFICATIONS</a></cite>].</p>
<p>An <code>LinkedDataNotificationsSubscription2021</code> API SHOULD support the <cite><a href="https://solid.github.io/notifications/protocol#notification-features">Solid Notifications Features</a></cite>.</p>
<p property="skos:definition">The <code>LinkedDataNotificationsSubscription2021</code> type defines the following properties:</p>
<span rel="skos:hasTopConcept"><span resource="#linkeddatanotificationssubscription2021-inbox"></span><span resource="#linkeddatanotificationssubscription2021-webid"></span></span>
<dl>
<dt about="#linkeddatanotificationssubscription2021-inbox" property="skos:prefLabel" typeof="skos:Concept"><dfn id="linkeddatanotificationssubscription2021-inbox">inbox</dfn></dt>
<dd about="#linkeddatanotificationssubscription2021-inbox" property="skos:definition"><span about="" id="linkeddatanotificationssubscription2021-inbox-https" rel="spec:requirement" resource="#linkeddatanotificationssubscription2021-inbox-https"><span property="spec:statement">The <code>inbox</code> property is used in the body of the subscription request. The value of this property <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> be a URI, using the <code>https</code> scheme.</span></span> <span about="" id="linkeddatanotificationssubscription2021-inbox-ldn-receiver" rel="spec:requirement" resource="#linkeddatanotificationssubscription2021-inbox-ldn-receiver"><span property="spec:statement">The inbox URI <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> conform to the <a href="https://www.w3.org/TR/ldn/#receiver" rel="cito:citesAsAuthority">receiver</a> portion of the <a href="https://www.w3.org/TR/ldn/">Linked Data Notifications</a> [<cite><a class="bibref" href="#bib-ldn">LDN</a></cite>] specification.</span></span></dd>
<dt about="#linkeddatanotificationssubscription2021-webid" property="skos:prefLabel" typeof="skos:Concept"><dfn id="linkeddatanotificationssubscription2021-webid">webid</dfn></dt>
<dd about="#linkeddatanotificationssubscription2021-webid" property="skos:definition"><span about="" id="linkeddatanotificationssubscription2021-webid-https" rel="spec:requirement" resource="#linkeddatanotificationssubscription2021-webid-https"><span property="spec:statement">The <code>webid</code> property is used in the body of the subscription response. The value of this property <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> be an HTTPS URI conforming to <a href="https://www.w3.org/2005/Incubator/webid/spec/identity/" rel="cito:citesAsAuthority">WebID 1.0</a> [<cite><a class="bibref" href="#bib-webid">WEBID</a></cite>]. All LDN notifications will be sent to the defined inbox using the agent identity specified by this WebID. A resource owner should ensure that the agent identified in this property is permitted to send authenticated HTTP requests to the defined inbox.</span></span></dd>
</dl>
<p>A client establishes a subscription using the <code>LinkedDataNotificationsSubscription2021</code> type by sending an authenticated subscription request to the hypermedia API retrieved via <cite><a href="https://solid.github.io/notifications/protocol#discovery">Solid Notifications Discovery</a></cite>.</p>
<p id="client-subscription">For <code>LinkedDataNotificationsSubscription2021</code> interactions, the client sends a JSON-LD payload to the appropriate hypermedia API via <code>POST</code>. The only required fields in this interaction are <code>type</code>, <code>topic</code> and <code>inbox</code>. <span about="" id="client-subcription-type" rel="spec:requirement" resource="#client-subscription-type"><span property="spec:statement">The <code>type</code> field <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> contain the type of subscription being requested.</span></span> <span about="" id="client-subscription-topic" rel="spec:requirement" resource="#client-subscription-topic"><span property="spec:statement">The <code>topic</code> field <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> contain the URL of the resource a client wishes to subscribe to changes.</span></span> <span about="" id="client-subscription-inbox" rel="spec:requirement" resource="#client-subscription-inbox"><span property="spec:statement">The <code>topic</code> field <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> contain the URL of an inbox that notifications can be sent to.</span></span></p>
<p id="server-subscription">When responding to the subscription request, the server MUST respond with a JSON-LD payload. The only required fields are <code>type</code> and <code>webid</code>. <span about="" id="server-subcription-type" rel="spec:requirement" resource="#server-subscription-type"><span property="spec:statement">The <code>type</code> field <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> contain the type of subscription being provided.</span></span> <span about="" id="server-subcription-webid" rel="spec:requirement" resource="#server-subscription-webid"><span property="spec:statement">The <code>webid</code> field <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> contain the URI of the agent that will send notifications to the inbox.</span></span></p>
<section id="linkeddatanotifications-subscription" inlist="" rel="schema:hasPart" resource="#linkeddatanotifications-subscription">
<h3 property="schema:name">Subscription Example</h3>
<div datatype="rdf:HTML" property="schema:description">
<p><em>This section is non-normative.</em></p>
<p>An example <code>POST</code> request using a <code>DPoP</code> bound access token is below:</p>
<figure id="notification-subscription-request" class="example listing" rel="schema:hasPart" resource="#notification-subscription-request">
<p class="example-h"><span>Example</span>: Requesting changes from the Notification Subscription.</p>
<pre about="#notification-subscription-request" property="schema:description" typeof="fabio:Script"><code>POST /subscription</code>
<code>Authorization: DPoP <token></code>
<code>DPoP: <proof></code>
<code>Content-Type: application/ld+json</code>
<code></code>
<code>{</code>
<code> "@context": "https://www.w3.org/ns/solid/notification/v1",</code>
<code> "type": "LinkedDataNotificationsSubscription2021",</code>
<code> "topic": "https://storage.example.org/resource",</code>
<code> "inbox": "https://receiver.example.net/inbox/",</code>
<code> "state": "opaque-state",</code>
<code> "expiration": "2022-12-29T15:00:00Z",</code>
<code> "rate": "PT10s"</code>
<code>}</code></pre>
<figcaption property="schema:name"><code>POST</code> request including <code>type</code>, <code>topic</code>, and <code>inbox</code> targeting the Notification Subscription API.</figcaption>
</figure>
<p>A successful response will contain the WebID of the agent that can be permitted to send authenticated HTTP notifications.</p>
<figure id="notification-subscription-response" class="example listing" rel="schema:hasPart" resource="#notification-subscription-response">
<p class="example-h"><span>Example</span>: Response from the Notification Subscription including the WebID.</p>
<pre about="#notification-subscription-response" property="schema:description" typeof="fabio:Script"><code>HTTP/2</code>
<code>Content-Type: application/ld+json</code>
<code></code>
<code>{</code>
<code> "@context": "https://www.w3.org/ns/solid/notification/v1",</code>
<code> "type": "LinkedDataNotificationsSubscription2021",</code>
<code> "webid": "https://agent.example/profile#i"</code>
<code>}</code></pre>
<figcaption property="schema:name">Response to the <code>POST</code> request including <code>type</code> and <code>webid</code>.</figcaption>
</figure>
</div>
</section>
</div>
</section>
<section id="authentication-authorization" inlist="" rel="schema:hasPart" resource="#authentication-authorization">
<h2 property="schema:name">Authentication and Authorization</h2>
<div datatype="rdf:HTML" property="schema:description">
<p>As described by the Solid Notifications Protocol section on <cite><a href="https://solid.github.io/notifications/protocol#authentication-authorization" rel="cito:discusses">Authorization</a></cite>, authorization and follows the guidance of the Solid Protocol sections on <cite><a href="https://solidproject.org/TR/protocol#authentication" rel="cito:discusses">Authentication</a></cite> and <cite><a href="https://solidproject.org/TR/protocol#authorization" rel="cito:discusses">Authorization</a></cite> [<cite><a class="bibref" href="#bib-solid-protocol">SOLID-PROTOCOL</a></cite>].</p>
<p>It is beyond the scope of this document to describe how a client fetches an access token. <cite><a href="https://solid.github.io/solid-oidc/" rel="cito:discusses">Solid-OIDC</a></cite> is one example of an authentication mechanism that could be used with Solid Notifications [<cite><a class="bibref" href="#bib-solid-oidc">SOLID-OIDC</a></cite>].</p>
</div>
</section>
<section class="appendix" id="references" inlist="" rel="schema:hasPart" resource="#references">
<h2 property="schema:name">References</h2>
<div datatype="rdf:HTML" property="schema:description">
<section id="normative-references" inlist="" rel="schema:hasPart" resource="#normative-references">
<h3 property="schema:name">Normative References</h3>
<div datatype="rdf:HTML" property="schema:description">
<dl class="bibliography" resource="">
<dt id="bib-ldn">[LDN]</dt>
<dd><a href="https://www.w3.org/TR/ldn/" rel="cito:citesAsAuthority"><cite>Linked Data Notifications</cite></a>. Sarven Capadisli; Amy Guy. W3C. 2 May 2017. W3C Recommendation. URL: <a href="https://www.w3.org/TR/ldn/">https://www.w3.org/TR/ldn/</a></dd>
<dt id="bib-rfc2119">[RFC2119]</dt>
<dd><a href="https://datatracker.ietf.org/doc/html/rfc2119" rel="cito:citesAsAuthority"><cite>Key words for use in RFCs to Indicate Requirement Levels</cite></a>. S. Bradner. IETF. March 1997. Best Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc2119">https://datatracker.ietf.org/doc/html/rfc2119</a></dd>
<dt id="bib-rfc8174">[RFC8274]</dt>
<dd><a href="https://datatracker.ietf.org/doc/html/rfc8174" rel="cito:citesAsAuthority"><cite>Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words</cite></a>. B. Leiba. IETF. May 2017. Best Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc8174">https://datatracker.ietf.org/doc/html/rfc8174</a></dd>
<dt id="bib-solid-notifications">[SOLID-NOTIFICATIONS]</dt>
<dd><a href="https://solid.github.io/notifications/protocol" rel="cito:citesAsAuthority"><cite>Solid Notifications</cite></a>. Aaron Coburn; Sarven Capadisli. W3C Solid Community Group. W3C Editor's Draft. URL: <a href="https://solid.github.io/notifications/protocol">https://solid.github.io/notifications/protocol</a></dd>
<dt id="bib-solid-oidc">[SOLID-OIDC]</dt>
<dd><a href="https://solid.github.io/solid-oidc/" rel="cito:citesAsAuthority"><cite>SOLID-OIDC</cite></a>. Aaron Coburn; elf Pavlik; Dmitri Zagidulin. W3C Solid Community Group. W3C Editor's Draft. URL: <a href="https://solid.github.io/solid-oidc/">https://solid.github.io/solid-oidc/</a></dd>
<dt id="bib-solid-protocol">[SOLID-PROTOCOL]</dt>
<dd><a href="https://solidproject.org/TR/2021/protocol-20211217" rel="cito:citesAsAuthority"><cite>Solid Protocol</cite></a>. Sarven Capadisli; Tim Berners-Lee; Ruben Verborgh; Kjetil Kjernsmo. W3C Solid Community Group. Version 0.9.0. URL: <a href="https://solidproject.org/TR/2021/protocol-20211217">https://solidproject.org/TR/2021/protocol-20211217</a></dd>
</dl>
</div>
</section>
</div>
</section>
</div>
</article>
</main>
<p role="navigation" id="back-to-top"><a href="#toc"><abbr title="Back to top">↑</abbr></a></p>
<script src="https://www.w3.org/scripts/TR/2021/fixup.js"></script>
</body>
</html>