discovery-api/Overview.src.html
author Robin Berjon <robin@berjon.com>
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<!DOCTYPE html>
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<html>
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  <head>
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    <title>Networked Service Discovery and Messaging</title>
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    <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
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    <script type="text/javascript" class='remove'>
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      var respecConfig = {
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          specStatus: "ED",
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          shortName:  "discovery",
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          edDraftURI: "http://w3c-test.org/dap/discovery-api/",
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          editors: [
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                {   name:       "Rich Tibbett",
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                    //url:        "http://richt.me/",
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                    company:    "Opera Software ASA",
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                    companyURL: "http://opera.com/" },
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                {   name:       "Clarke Stevens",
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                    //url:      "",
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                    company:    "CableLabs",
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                    companyURL: "http://cablelabs.com/"
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                }
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          ],
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          noIDLIn:  true,
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          wg:           "Device APIs and Policy Working Group",
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          wgURI:        "http://www.w3.org/2009/dap/",
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          wgPublicList: "public-device-apis",
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          wgPatentURI:  "http://www.w3.org/2004/01/pp-impl/43696/status",
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      };
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    </script>
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    <style type="text/css">
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      /**
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       * SyntaxHighlighter
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       * http://alexgorbatchev.com/SyntaxHighlighter
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       *
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       * SyntaxHighlighter is donationware. If you are using it, please donate.
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       * http://alexgorbatchev.com/SyntaxHighlighter/donate.html
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       *
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       * @version
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       * 3.0.83 (July 02 2010)
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       *
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       * @copyright
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       * Copyright (C) 2004-2010 Alex Gorbatchev.
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       *
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       * @license
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       * Dual licensed under the MIT and GPL licenses.
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       */
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      .syntaxhighlighter a,
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       * SyntaxHighlighter
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       * http://alexgorbatchev.com/SyntaxHighlighter
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       *
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       * SyntaxHighlighter is donationware. If you are using it, please donate.
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       * http://alexgorbatchev.com/SyntaxHighlighter/donate.html
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       * 3.0.83 (July 02 2010)
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       *
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       * @copyright
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       * Copyright (C) 2004-2010 Alex Gorbatchev.
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       *
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       * @license
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       * Dual licensed under the MIT and GPL licenses.
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       */
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  <body>
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        This specification defines a mechanism for an HTML document to discover and subsequently communicate with <acronym title="Hypertext Transfer Protocol">HTTP</acronym>-based services
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   417
        advertised via common discovery protocols within a user's network.
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   418
      </p>
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   419
    </section>
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diff changeset
   420
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   421
    <section id='sotd'>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   422
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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   423
        This document represents the early consensus of the group on the scope and features of the proposed
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   424
        API.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   425
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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   426
    </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   427
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   428
    <section class="informative">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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parents:
diff changeset
   429
      <h3>Introduction</h3>
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diff changeset
   430
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   431
      <p>To enable Web pages to connect and communicate with Local-networked Services provided over HTTP, this specification introduces the
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diff changeset
   432
      <a href="#navigatornetworkservice"><code>NavigatorNetworkService</code></a> interface.</p>
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diff changeset
   433
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   434
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   435
         Using this <acronym title="Application Programming Interface">API</acronym> consists of requesting a well-known service type, known by developers and advertised by Local-networked Devices. User authorization, where the user connects the web page to one or more discovered services,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   436
         is expected before the web page is able to interact with any Local-networked Services.
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diff changeset
   437
      </p>
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diff changeset
   438
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   439
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   440
         A web page creates a request to obtain connectivity to services running in the network by specifying a well-known discovery service type that it wishes to interact with.
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diff changeset
   441
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   442
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   443
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   444
         The user agent, having captured all advertised services on the network from the Service Discovery mechanisms included in this recommendation, attempts to match
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   445
      the requested service type to a discovered service according to the processing described herein.
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diff changeset
   446
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   447
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   448
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   449
          If a service connectivity request is successful then the Web page is provided with the necessary information to communicate with the authorized Local-networked Service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   450
          If the request fails then the Web page will receive an error callback containing an error code describing the cause of Local-networked Service connectivity failure.
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diff changeset
   451
      </p>
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diff changeset
   452
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   453
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   454
         Once connected to a Local-networked Service the Web page can send requests and receive responses to the Local-networked Service via the messaging format and appropriate channel inferred from the service type
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   455
         authorized via the provided API.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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parents:
diff changeset
   456
         The Web page, once connected, can also receive service-pushed events, in the messaging format supported by the Local-networked Device, if such event subscription functionality is provided by the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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parents:
diff changeset
   457
         connected Local-networked Service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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parents:
diff changeset
   458
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
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diff changeset
   459
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   460
      <div class="example">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
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diff changeset
   461
       <p>Example of requesting a DNS-SD advertised service:</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   462
       <hr />
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   463
       <pre class="brush:js">function showServices( services ) {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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diff changeset
   464
  // Show a list of all the services provided to the web page
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   465
  for(var i = 0, l = services.length; i < l; i++) console.log( services[i].name );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
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parents:
diff changeset
   466
}
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   467
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   468
navigator.getNetworkServices('zeroconf:_boxee-jsonrpc._tcp', showServices);</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   469
      </div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   470
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   471
      <div class="example">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   472
        <p>Example of requesting a UPnP advertised service, also handling error conditions:</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   473
        <hr />
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   474
        <pre class="brush:js">function showServices( services ) {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   475
  // Show a list of all the services provided to the web page
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   476
  for(var i = 0, l = services.length; i < l; i++) console.log( services[i].name );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   477
}
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   478
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   479
function error( e ) {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   480
  console.log( "Error occurred: " + e.code );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   481
}
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   482
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   483
navigator.getNetworkServices('upnp:urn:schemas-upnp-org:service:ContentDirectory:1', showServices, error);</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   484
      </div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   485
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   486
      <div class="example">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   487
        <p>Example of requesting either a DNS-SD or UPnP advertised service:</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   488
        <hr />
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   489
        <pre class="brush:js">function showServices( services ) {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   490
  // Show a list of all the services provided to the web page (+ service type)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   491
  for(var i = 0, l = services.length; i < l; i++)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   492
     console.log( services[i].name + '(' + services[i].type + ')' );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   493
}
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   494
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   495
navigator.getNetworkServices([
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   496
  'zeroconf:_boxee-jsonrpc._tcp',
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   497
  'upnp:urn:schemas-upnp-org:service:ContentDirectory:1'
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   498
], showServices);</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   499
      </div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   500
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   501
      <p>For more detailed examples see the <a href="#examples">Examples</a> section.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   502
    </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   503
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   504
    <section
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   505
     id='conformance'>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   506
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   507
     <p>Requirements phrased in the imperative as part of algorithms (such as "strip any leading space characters" or "return false and abort these steps") are to be interpreted with the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   508
     meaning of the key word ("must", "should", "may", etc) used in introducing the algorithm.</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   509
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   510
     <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   511
      Some conformance requirements are phrased as requirements on attributes, methods or objects. Such requirements are to be interpreted as requirements on user agents.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   512
     </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   513
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   514
     <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   515
      Conformance requirements phrased as algorithms or specific steps may be implemented in any manner, so long as the end result is equivalent. (In particular, the algorithms defined in
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   516
      this specification are intended to be easy to follow, and not intended to be performant.)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   517
     </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   518
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   519
     <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   520
      The only conformance class defined by this specification is a <dfn>user agent</dfn>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   521
     </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   522
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   523
     <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   524
      User agents may impose implementation-specific limits on otherwise unconstrained inputs, e.g. to prevent denial of service attacks, to guard against running out of memory, or to work
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   525
      around platform-specific limitations.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   526
     </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   527
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   528
     <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   529
      When support for a feature is disabled (e.g. as an emergency measure to mitigate a security problem, or to aid in development, or for performance reasons), user agents must act as if
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   530
      they had no support for the feature whatsoever, and as if the feature was not mentioned in this specification. For example, if a particular feature is accessed via an attribute in a Web
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   531
      IDL interface, the attribute itself would be omitted from the objects that implement that interface - leaving the attribute on the object but making it return null or throw an exception
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   532
      is insufficient.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   533
     </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   534
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   535
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   536
         <h3>Dependencies</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   537
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   538
         This specification relies on several other underlying specifications.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   539
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   540
         <dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   541
            <dt>HTML</dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   542
            <dd>Many fundamental concepts from HTML are used by this specification. [[!HTML5]]</dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   543
            <dt>WebIDL</dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   544
            <dd>The IDL blocks in this specification use the semantics of the WebIDL specification. [[!WEBIDL]]</dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   545
         </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   546
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   547
    </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   548
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   549
    <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   550
      <h3>Terminology</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   551
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   552
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   553
         The construction "a <code>Foo</code> object", where <code>Foo</code> is actually an interface, is sometimes used instead of the more accurate "an object implementing the interface <code>Foo</code>".
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   554
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   555
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   556
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   557
         The term DOM is used to refer to the API set made available to scripts in Web applications, and does not necessarily imply the existence of an actual <code>Document</code> object or of any
182
Robin Berjon <robin@berjon.com>
parents: 181
diff changeset
   558
         other <code>Node</code> objects as defined in the DOM Core specifications. [[!DOM4]]
180
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   559
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   560
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   561
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   562
         An IDL attribute is said to be <em>getting</em> when its value is being retrieved (e.g. by author script), and is said to be <em>setting</em> when a new value is assigned to it.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   563
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   564
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   565
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   566
        A <dfn>valid service type</dfn> is a string that begins with <code>upnp:</code> or <code>zeroconf:</code> followed by one or more characters in the ranges U+0021, U+0023 to U+0027, U+002A to U+002B, U+002D to U+002E, U+0030 to U+0039, U+0041 to U+005A, U+005E to U+007E.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   567
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   568
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   569
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   570
        A <a>valid service type</a> provided in the <code>type</code> attribute of the <code>getNetworkServices()</code> method will be matched against the services currently contained in the <a>list of available service records</a> according to the algorithms defined in this specification.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   571
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   572
    </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   573
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   574
    <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   575
     <h2>Requesting networked services</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   576
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   577
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   578
<pre class="widl">[Supplemental, NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   579
interface <dfn id="navigatornetworkservice">NavigatorNetworkService</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   580
  // Obtain a Local-networked Service
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   581
  void <a href="#dom-navigator-getnetworkservices">getNetworkServices</a>( in any type,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   582
                           in <a href="#navigatornetworkservicesuccesscallback">NavigatorNetworkServiceSuccessCallback</a> successCallback,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   583
                           in optional <a href="#navigatornetworkserviceerrorcallback">NavigatorNetworkServiceErrorCallback</a> errorCallback );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   584
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   585
<a class="externalDFN" href="http://www.whatwg.org/specs/web-apps/current-work/complete/timers.html#navigator">Navigator</a> implements <a href="#navigatornetworkservice">NavigatorNetworkService</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   586
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   587
[Callback=FunctionOnly, NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   588
interface <dfn id="navigatornetworkservicesuccesscallback">NavigatorNetworkServiceSuccessCallback</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   589
  void handleEvent( in <a href="#networkservices">NetworkServices</a> services );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   590
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   591
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   592
[NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   593
interface <dfn id="navigatornetworkserviceerror">NavigatorNetworkServiceError</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   594
  const unsigned short <a href="#dom-navigatornetworkserviceerror-permission_denied">PERMISSION_DENIED_ERR</a> = 1;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   595
  const unsigned short <a href="#dom-navigatornetworkserviceerror-unknown_type_prefix">UNKNOWN_TYPE_PREFIX_ERR</a> = 2;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   596
  readonly attribute unsigned short <a href="#dom-navigatornetworkserviceerror-code">code</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   597
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   598
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   599
[Callback=FunctionOnly, NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   600
interface <dfn id="navigatornetworkserviceerrorcallback">NavigatorNetworkServiceErrorCallback</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   601
  void handleEvent( in <a href="#navigatornetworkserviceerror">NavigatorNetworkServiceError</a> error );
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   602
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   603
</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   604
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   605
  <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   606
   <h2>Methods</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   607
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   608
      <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   609
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   610
          <var title="">window</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   611
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   612
          <code title="dom-navigator">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   613
            <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/timers.html#navigator">navigator</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   614
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   615
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   616
          <code title="dom-navigator-getNetworkServices">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   617
            <a href="#dom-navigator-getnetworkservices">getNetworkServices</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   618
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   619
          (
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   620
          <var title="">type</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   621
          ,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   622
          <var title="">successCallback</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   623
           [,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   624
          <var title="">errorCallback</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   625
           ] )
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   626
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   627
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   628
          <p>Prompts the user to select one or more discovered network services that have advertised support for the requested service type.</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   629
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   630
            The
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   631
            <var title="">type</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   632
             argument contains one or more <a>valid service type</a> tokens that the web page would like to interact with.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   633
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   634
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   635
            If the user accepts, the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   636
            <var title="">successCallback</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   637
             is
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   638
          invoked, with one or more
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   639
            <code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   640
              <a href="#networkservice"><code>NetworkService</code></a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   641
            </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   642
             objects as
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   643
          its argument.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   644
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   645
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   646
            If the user declines, the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   647
            <var title="">errorCallback</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   648
             (if
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   649
          any) is invoked.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   650
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   651
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   652
      </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   653
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   654
       <div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   655
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   656
            When the <dfn id="dom-navigator-getnetworkservices" title="dom-navigator-getnetworkservices"><code>getNetworkServices(type, successCallback[, errorCallback])</code></dfn> method is called, the <a>user agent</a> MUST run the following steps:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   657
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   658
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   659
          <ol class="rule">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   660
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   661
               If <var>successCallback</var> is empty or is not an object of type <code>Function</code> then the <a>user agent</a> MUST abort these steps.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   662
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   663
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   664
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   665
              Let <var>requested control types</var> be initially set to an empty array.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   666
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   667
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   668
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   669
               If <var>type</var> is an array consisting of one or more <a>valid service type</a> tokens, then let <var>requested control types</var> by the value of <var>type</var>, removing any non-<a>valid service type</a> tokens from the resulting array.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   670
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   671
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   672
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   673
               If <var>type</var> is a string consisting of one <a>valid service type</a> token, then let <var>requested control types</var> be an array containing one item with a value of <var>type</var>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   674
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   675
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   676
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   677
               If <var>requested control types</var> is an array that contains at least one or more <a title="valid service type">valid service type</a> tokens then continue to the step labeled <em>process</em> below. Otherwise, the <a>user agent</a> MUST <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#queue-a-task" class="externalDFN">queue a task</a> to invoke <var>errorCallback</var>, if it is provided and is an object of type <code>Function</code>, with a new <a href="#navigatornetworkserviceerror"><code>NavigatorNetworkServiceError</code></a> object whose
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   678
                 <a href="#dom-navigatornetworkserviceerror-code"><code>code</code></a> attribute has the numeric value 2
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   679
                  (<a href="#dom-navigatornetworkserviceerror-unknown_type_prefix"><code>UNKNOWN_TYPE_PREFIX_ERR</code></a>) as its argument,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   680
                   abort any remaining steps and return.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   681
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   682
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   683
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   684
               <em>Process</em>: Let <var>services found</var> be an empty array.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   685
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   686
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   687
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   688
               For each <var>available service</var> in the <a>list of available service records</a> run the following steps:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   689
               <ol class="rule">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   690
                  <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   691
                    For each <var>requested control type</var> in <var>requested control types</var>: If <var>available service</var>'s <code>type</code> attribute equals the <var>requested control type</var> then let <var>matched service</var> equal the value of <var>available service</var> and continue at the step labeled <var>attach</var> below.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   692
                  </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   693
                  <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   694
                     Continue at the next <var>available service</var>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   695
                  </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   696
                  <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   697
                     <em>Attach</em>: If <var>matched service</var> is not empty then run the following steps:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   698
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   699
                     <ol class="rule">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   700
                        <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   701
                           Let <var>new service object</var> be a new <a href="#networkservice"><code>NetworkService</code></a> object, mapping the parameters of
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   702
                     <var>matched service</var> to this new object where possible.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   703
                        </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   704
                        <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   705
                           Append <var>new service object</var> to the <var>services found</var> array.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   706
                        </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   707
                     </ol>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   708
                  </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   709
               </ol>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   710
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   711
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   712
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   713
               If <var>services found</var> is an empty array, then the <a>user agent</a> MUST <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#queue-a-task" class="externalDFN">queue a task</a> to invoke <var>errorCallback</var>, if it is provided and is an object of type <code>Function</code>, with a new <a href="#navigatornetworkserviceerror"><code>NavigatorNetworkServiceError</code></a> object whose
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   714
                 <a href="#dom-navigatornetworkserviceerror-code"><code>code</code></a> attribute has the numeric value 1
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   715
                 (<a href="#dom-navigatornetworkserviceerror-permission_denied"><code>PERMISSION_DENIED_ERR</code></a>) as its argument, abort any remaining steps and return.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   716
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   717
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   718
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   719
               Return, and run the remaining steps asynchronously.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   720
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   721
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   722
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   723
               Optionally, e.g. based on a previously-established user preference, for security reasons, or due to platform limitations, the <a>user agent</a> MAY <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#queue-a-task" class="externalDFN">queue a task</a> to invoke <var>errorCallback</var>, if it is provided and is an object of type <code>Function</code>, with a new <a href="#navigatornetworkserviceerror"><code>NavigatorNetworkServiceError</code></a> object whose
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   724
                 <a href="#dom-navigatornetworkserviceerror-code"><code>code</code></a> attribute has the numeric value 1
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   725
                 (<a href="#dom-navigatornetworkserviceerror-permission_denied"><code>PERMISSION_DENIED_ERR</code></a>) as its argument, abort any remaining steps and return.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   726
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   727
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   728
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   729
                  The <a>user agent</a> MUST prompt the user in a user-agent-specific manner for permission to provide the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   730
                  <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/browsers.html#entry-script" class="externalDFN">entry script</a>'s
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   731
                  <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/origin-0.html#origin" class="externalDFN">origin</a> with an array of
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   732
                  <a href="#networkservice"><code>NetworkService</code></a> objects representing the user-authorized subset of <var>services found</var>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   733
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   734
               <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   735
                  If the user grants permission to access one or more networked services then the <a>user agent</a> SHOULD include an
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   736
                  "ongoing local-network communication" indicator.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   737
               </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   738
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   739
               <p>If the user denies permission, then the <a>user agent</a> MUST <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#queue-a-task" class="externalDFN">queue a task</a> to invoke <var>errorCallback</var>, if it is provided and is an object of type <code>Function</code>, with a new <a href="#navigatornetworkserviceerror"><code>NavigatorNetworkServiceError</code></a> object whose
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   740
                <a href="#dom-navigatornetworkserviceerror-code"><code>code</code></a> attribute has the numeric value 1
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   741
                (<a href="#dom-navigatornetworkserviceerror-permission_denied"><code>PERMISSION_DENIED_ERR</code></a>) as its argument, abort any remaining steps and return.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   742
              </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   743
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   744
              <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   745
                If the user never responds, this algorithm stalls on this step.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   746
              </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   747
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   748
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   749
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   750
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   751
               Let <var>services</var> be the array of one or more <a href="#networkservice"><code>NetworkService</code></a> objects for which the user granted permission.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   752
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   753
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   754
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   755
               For each Object <var>service</var> in <var>services</var>, run the following substeps:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   756
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   757
               <ol class="rule">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   758
                  <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   759
                     Add the <var>service</var>'s <code>url</code> parameter to the <a>entry script origin's <acronym title="Uniform Resource Locator">URL</acronym> whitelist</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   760
                  </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   761
                  <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   762
                    If <var>service</var> was originally created from a UPnP discovery process and the <var>service</var>'s <code>eventsUrl</code> parameter is not empty then <a>setup a UPnP Events Subscription</a> for <var>service</var>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   763
                  </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   764
               </ol>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   765
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   766
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   767
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   768
               Let <var>services manager</var> be a new <a href="#networkservices"><code>NetworkServices</code></a> object.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   769
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   770
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   771
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   772
               Set <var>services manager</var>'s <code>servicesAvailable</code> attribute to the length of <var>services</var>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   773
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   774
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   775
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   776
              Store the set of <var>services</var> as <dfn id="current_authorized_services">current authorized services</dfn> internally against the newly created <var>services manager</var> object.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   777
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   778
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   779
            <li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   780
               The <a>user agent</a> MUST <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#queue-a-task" class="externalDFN">queue a task</a> to invoke <var>successCallback</var> with
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   781
               <var>services manager</var> as its argument.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   782
            </li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   783
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   784
          </ol>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   785
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   786
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   787
            The <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#task-source" class="externalDFN">task source</a> for these
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   788
            <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#concept-task" class="externalDFN">tasks</a> is the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   789
            <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/webappapis.html#user-interaction-task-source" class="externalDFN">user interaction task source</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   790
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   791
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   792
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   793
            When a <a href="#networkservice"><code>NetworkService</code></a> object is provided to a Web page, the <a>user agent</a> MUST add the <code>url</code> property
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   794
             to the <dfn>entry script origin's URL whitelist</dfn>. This list enables the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   795
            Web page to override and initiate cross-site resource requests towards these URLs, and any sub-resources of these URLs, within the current
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   796
            <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/browsers.html#entry-script" class="externalDFN">entry script</a>'s
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   797
            <a href="http://www.whatwg.org/specs/web-apps/current-work/complete/origin-0.html#origin" class="externalDFN">origin</a> via various existing mechanisms (e.g. Web Sockets, Server-Sent Events,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   798
            Web Messaging, XMLHttpRequest).
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   799
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   800
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   801
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   802
            If the user navigates away from the current browsing context, the <a>user agent</a> MUST remove all previously whitelisted urls from the <a>entry script origin's URL whitelist</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   803
            There is no persistence to network service selections provided to a web page. It is not possible to access a previously white-listed networked service without the necessary user authorization in all of the following cases:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   804
            <ul>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   805
              <li>If the current script is reloaded at any point in the same or different window.</li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   806
              <li>if the current script reinvokes the <a href="#dom-navigator-getnetworkservices"><code>getNetworkServices()</code></a> method at any point in its execution.</li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   807
              <li>If the user navigates forward or back in their history to reload the current page.</li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   808
              <li>If a script is running in a different origin.</li>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   809
            </ul>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   810
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   811
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   812
      </div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   813
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   814
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   815
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   816
         <h3>Error Handling</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   817
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   818
      <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   819
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   820
          <var title="">error</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   821
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   822
          <code title="dom-NavigatorNetworkServiceError-code">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   823
            <a href="#dom-navigatornetworkserviceerror-code">code</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   824
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   825
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   826
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   827
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   828
            Returns the current error's error code. At the current time, this may be <code>1</code> or <code>2</code>, for which the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   829
            corresponding error constants
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   830
            <a href="#dom-navigatornetworkserviceerror-permission_denied"><code>PERMISSION_DENIED_ERR</code></a> and
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   831
            <a href="#dom-navigatornetworkserviceerror-unknown_type_prefix"><code>UNKNOWN_TYPE_PREFIX_ERR</code></a> are defined.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   832
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   833
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   834
      </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   835
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   836
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   837
            The <dfn id="dom-navigatornetworkserviceerror-code" title="dom-navigatornetworkserviceerror-code"><code>code</code></dfn> attribute of a
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   838
            <a href="#navigatornetworkserviceerror"><code>NavigatorNetworkServiceError</code></a> object MUST return the code for the error, which will be one of the following:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   839
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   840
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   841
         <dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   842
            <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   843
               <dfn id="dom-navigatornetworkserviceerror-permission_denied" title="dom-navigatornetworkserviceerror-permission_denied"><code>PERMISSION_DENIED_ERR</code></dfn> (numeric value 1)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   844
            </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   845
            <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   846
               The user denied the page permission to access any services.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   847
            </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   848
            <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   849
               <dfn id="dom-navigatornetworkserviceerror-unknown_type_prefix" title="dom-navigatornetworkserviceerror-unknown_type_prefix"><code>UNKNOWN_TYPE_PREFIX_ERR</code></dfn> (numeric value 2)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   850
            </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   851
            <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   852
               No <a>valid service type</a> tokens were provided in the method invocation.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   853
            </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   854
         </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   855
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   856
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   857
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   858
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   859
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   860
      <h2>Obtaining networked services</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   861
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   862
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   863
         The <a href="#networkservices"><code>NetworkServices</code></a> interface is the top-level response object from a call to <a href="#dom-navigator-getnetworkservices"><code>getNetworkServices()</code></a> and provides access to a set of user-authorized <a href="#networkservice"><code>NetworkService</code></a> objects for the given request.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   864
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   865
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   866
<pre class="widl">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   867
[NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   868
interface <dfn id="networkservices">NetworkServices</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   869
  readonly attribute unsigned long    <a href="#dom-networkservices-length">length</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   870
  getter <a href="#networkservice">NetworkService</a> (unsigned long index);
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   871
  <a href="#networkservice">NetworkService</a>? <a href="#dom-networkservices-getservicebyid">getServiceById</a>(DOMString id);
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   872
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   873
  readonly attribute unsigned long    <a href="#dom-networkservices-servicesavailable">servicesAvailable</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   874
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   875
  // event handler attributes
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   876
           attribute <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#eventhandler" class="externalDFN">EventHandler</a>     <a href="#dom-networkservices-onserviceavailable">onserviceavailable</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   877
           attribute <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#eventhandler" class="externalDFN">EventHandler</a>     <a href="#dom-networkservices-onserviceunavailable">onserviceunavailable</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   878
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   879
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   880
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   881
<a href="#networkservices">NetworkServices</a> implements <a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#interface-eventtarget" class="externalDFN">EventTarget</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   882
</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   883
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   884
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   885
      <h2>Attributes</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   886
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   887
        <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   888
          <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   889
            <code title="dom-networkservices-length">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   890
              <a href="#dom-networkservices-length">length</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   891
            </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   892
          </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   893
          <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   894
            <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   895
              Returns the current number of services in the respective object's <a>current authorized services</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   896
            </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   897
          </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   898
          <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   899
            <code title="dom-networkservices-servicesavailable">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   900
              <a href="#dom-networkservices-servicesavailable">servicesAvailable</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   901
            </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   902
          </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   903
          <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   904
            <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   905
              Returns the current number of services matching one of the app-requested <a>valid service type</a> tokens that are actively available within the user's current network.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   906
            </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   907
          </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   908
        </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   909
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   910
        <div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   911
           <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   912
              The <dfn id="dom-networkservices-length"><code>length</code></dfn> attribute MUST return the number of services represented in the object's corresponding <a>current authorized services</a> list at the time of getting.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   913
           </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   914
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   915
           <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   916
              The <dfn id="dom-networkservices-servicesavailable"><code>servicesAvailable</code></dfn> attribute MUST return the number of services available in the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   917
              user's network that match the <a>valid service type</a> that was initially used to create the current <a href="#networkservices"><code>NetworkServices</code></a> object.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   918
              By default, <a href="#dom-networkservices-servicesavailable"><code>servicesAvailable</code></a> MUST be set to <code>1</code>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   919
           </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   920
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   921
           <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   922
             When a previously unknown instance of a networked service matching one or the requested <a href="#dfn-valid-service-type">valid service types</a> becomes available on the user's current network, the <a>user agent</a> MUST fire a new simple
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   923
             event at the <a href="#dom-networkservices-onserviceavailable"><code>onserviceavailable</code></a> event handler.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   924
           </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   925
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   926
           <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   927
             When a previously known instance of a networked service matching one or the requested <a href="#dfn-valid-service-type">valid service types</a> becomes unavailable on the user's current network, the <a>user agent</a> MUST fire a new simple
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   928
             event at the <a href="#dom-networkservices-onserviceunavailable"><code>onserviceunavailable</code></a> event handler.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   929
           </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   930
        </div>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   931
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   932
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   933
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   934
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   935
      <h2>Methods</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   936
        <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   937
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   938
          <code title="networkservices-getter">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   939
            <a href="#networkservices">services</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   940
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   941
          [
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   942
          <var title="">index</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   943
          ]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   944
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   945
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   946
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   947
            Returns the specified <a href="#networkservice"><code>NetworkService</code></a> object.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   948
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   949
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   950
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   951
          <code title="networkservices-getter">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   952
            <a href="#networkservices">services</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   953
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   954
          .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   955
          <code title="dom-networkservices-getservicebyid">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   956
            <a href="#dom-networkservices-getservicebyid">getServiceById</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   957
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   958
          (
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   959
          <var title="">id</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   960
          )
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   961
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   962
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   963
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   964
            Returns the <a href="#networkservice"><code>NetworkService</code></a> object with the given identifier, or null if no
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   965
            service has that identifier.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   966
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   967
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   968
      </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   969
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   970
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   971
        A <a href="#networkservices"><code>NetworkServices</code></a> object represents the current list of zero or more <a>current authorized services</a>, of which zero or more can be available at a time. Each item in <a>current authorized services</a> is represented by a <a href="#networkservice"><code>NetworkService</code></a> object.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   972
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   973
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   974
      <p class="note">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   975
        Each service in a <a href="#networkservices"><code>NetworkServices</code></a> object thus has an index; the first has the index 0, and each subsequent service is numbered one higher than the previous one. If the <a>user agent</a> dynamically adds or removes network services for any reason, then the indices of the services in <a>current authorized services</a> will change dynamically. If the set of network services changes entirely, then all the previous services will be removed from <a>current authorized services</a> and replaced with new services.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   976
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   977
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   978
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   979
        The <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#supported-property-indices" class="externalDFN">supported property indices</a> of <a href="#networkservices"><code>NetworkServices</code></a> objects at any instant are the numbers from zero to the number of items in <a>current authorized services</a> represented by the respective object minus one, if any services are represented in <a>current authorized services</a>. If a <a href="#networkservices"><code>NetworkServices</code></a> object represents no <a>current authorized services</a>, it has no <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#supported-property-indices" class="externalDFN">supported property indices</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   980
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   981
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   982
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   983
        To <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#determine-the-value-of-an-indexed-property" class="externalDFN">determine the value of an indexed property</a> for a given index <var>index</var> in a <a href="#networkservices"><code>NetworkServices</code></a> object's <a>current authorized services</a>, the user agent MUST return the <a href="#networkservice"><code>NetworkService</code></a> object that represents the <var>index</var>th service in <a>current authorized services</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   984
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   985
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   986
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   987
        The <dfn id="dom-networkservices-getservicebyid"><code>getServiceById(id)</code></dfn> method MUST return the first <a href="#networkservice"><code>NetworkService</code></a> object in <a>current authorized services</a> represented by the respective object whose <a href="#dom-networkservice-id"><code>id</code></a> attribute is equal to the value of the <var>id</var> argument.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   988
        When no services in <a>current authorized services</a> match the given argument, the method MUST return null.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   989
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   990
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   991
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   992
         Services available within the local network can connect and disconnect at different times during the execution of a web page. A <a>user agent</a> can
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   993
         inform a web page when the state of networked services matching the requested <a>valid service type</a> change. Web pages can use this information to enable in-page experiences for communicating the state of networked services
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   994
         with the ability to change the particular service or set of services the page is connected to by re-invoking the <a href="#dom-navigator-getnetworkservices"><code>getNetworkServices()</code></a> method.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   995
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   996
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   997
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   998
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
   999
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1000
      <h2>Events</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1001
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1002
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1003
         The following are the event handlers (and their corresponding event handler event types) that must be supported, as IDL attributes, by all objects implementing the <a href="#networkservices"><code>NetworkServices</code></a> interface:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1004
       </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1005
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1006
       <table border="1">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1007
        <thead>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1008
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1009
            <th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1010
              <span title="event handlers">Event handler</span>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1011
            </th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1012
            <th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1013
              <span>Event handler event type</span>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1014
            </th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1015
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1016
        </thead>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1017
        <tbody>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1018
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1019
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1020
              <dfn id="dom-networkservices-onserviceavailable" title="dom-NetworkServices-onserviceavailable">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1021
                <code>onserviceavailable</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1022
              </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1023
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1024
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1025
              <code title="event-serviceavailable">serviceavailable</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1026
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1027
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1028
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1029
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1030
              <dfn id="dom-networkservices-onserviceunavailable" title="dom-NetworkServices-onserviceunavailable">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1031
                <code>onserviceunavailable</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1032
              </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1033
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1034
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1035
              <code title="event-serviceunavailable">serviceunavailable</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1036
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1037
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1038
        </tbody>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1039
      </table>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1040
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1041
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1042
         Events with an event type of <code>serviceavailable</code> or <code>serviceunavailable</code> defined in this specification are simple <code>Event</code> objects.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1043
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1044
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1045
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1046
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1047
    </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1048
    <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1049
    <h2>Communicating with a networked service</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1050
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1051
<p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1052
   The <a href="#networkservice"><code>NetworkService</code></a> interface is used to provide a set of connection information for an HTTP service endpoint and if available, service events, running on a networked device.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1053
</p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1054
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1055
<pre class="widl">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1056
[NoInterfaceObject]
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1057
interface <dfn id="networkservice">NetworkService</dfn> {
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1058
  readonly attribute DOMString        <a href="#dom-networkservice-id">id</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1059
  readonly attribute DOMString        <a href="#dom-networkservice-name">name</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1060
  readonly attribute DOMString        <a href="#dom-networkservice-type">type</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1061
  readonly attribute DOMString        <a href="#dom-networkservice-url">url</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1062
  readonly attribute DOMString        <a href="#dom-networkservice-config">config</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1063
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1064
  const unsigned short <a href="#dom-networkservice-AVAILABLE">AVAILABLE</a>      = 1;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1065
  const unsigned short <a href="#dom-networkservice-UNAVAILABLE">UNAVAILABLE</a>    = 2;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1066
  readonly attribute unsigned short   <a href="#dom-networkservice-readystate">readyState</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1067
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1068
  // event handler attributes
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1069
           attribute <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#eventhandler" class="externalDFN">EventHandler</a>     <a href="#dom-networkservice-onreadystatechange">onreadystatechange</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1070
           attribute <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#eventhandler" class="externalDFN">EventHandler</a>     <a href="#dom-networkservice-onmessage">onmessage</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1071
};
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1072
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1073
<a href="#networkservice">NetworkService</a> implements <a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#interface-eventtarget" class="externalDFN">EventTarget</a>;
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1074
</pre>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1075
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1076
<section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1077
  <h2>Attributes</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1078
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1079
      <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1080
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1081
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1082
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1083
          <code title="dom-networkservice-id">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1084
            <a href="#dom-networkservice-id">id</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1085
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1086
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1087
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1088
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1089
            A unique identifier for the given user-selected service instance.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1090
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1091
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1092
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1093
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1094
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1095
          <code title="dom-networkservice-name">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1096
            <a href="#dom-networkservice-name">name</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1097
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1098
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1099
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1100
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1101
            The name of the user-selected service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1102
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1103
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1104
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1105
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1106
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1107
          <code title="dom-networkservice-type">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1108
            <a href="#dom-networkservice-type">type</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1109
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1110
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1111
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1112
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1113
            The <a>valid service type</a> token value of the user-selected service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1114
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1115
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1116
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1117
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1118
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1119
          <code title="dom-networkservice-url">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1120
            <a href="#dom-networkservice-url">url</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1121
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1122
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1123
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1124
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1125
            The control URL endpoint (including any required port information) of the user-selected control service that has been added to the <a>entry script origin's URL whitelist</a>.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1126
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1127
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1128
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1129
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1130
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1131
          <code title="dom-networkservice-config">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1132
            <a href="#dom-networkservice-config">config</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1133
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1134
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1135
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1136
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1137
            The configuration information associated with the service depending on the requested service type.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1138
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1139
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1140
      </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1141
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1142
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1143
            The <dfn id="dom-networkservice-id"><code>id</code></dfn> attribute is a unique identifier for the service. Two services provided at different times or on different objects MUST have the same <a href="#dom-networkservice-id"><code>id</code></a> value.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1144
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1145
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1146
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1147
            The <dfn id="dom-networkservice-name"><code>name</code></dfn> attribute represents a human-readable title for the service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1148
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1149
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1150
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1151
             The <dfn id="dom-networkservice-type"><code>type</code></dfn> attribute reflects the value of the <a>valid service type</a> of the service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1152
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1153
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1154
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1155
            The <dfn id="dom-networkservice-url"><code>url</code></dfn> attribute is an <a href="http://www.w3.org/TR/html5/urls.html#absolute-url" class="externalDFN">absolute URL</a> pointing to the root HTTP
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1156
            endpoint for the service that has been added to the <a>entry script origin's URL whitelist</a>. Web pages can subsequently use this value for implicit cross-document messaging via various existing mechanisms (e.g. Web Sockets, Server-Sent Events, Web Messaging, XMLHttpRequest).
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1157
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1158
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1159
         <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1160
            The <dfn id="dom-networkservice-config"><code>config</code></dfn> attribute provides the raw configuration information extracted from the given network service.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1161
         </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1162
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1163
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1164
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1165
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1166
         <h3>States</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1167
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1168
      <dl class="domintro">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1169
        <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1170
          <var title="">service</var>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1171
           .
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1172
          <code title="dom-networkservice-readystate">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1173
            <a href="#dom-networkservice-readystate">readyState</a>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1174
          </code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1175
        </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1176
        <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1177
          <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1178
            Returns the current state.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1179
          </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1180
        </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1181
      </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1182
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1183
         A <a href="#networkservice"><code>NetworkService</code></a> object can be in several states. The <dfn id="dom-networkservice-readystate"><code>readyState</code></dfn> attribute MUST return the current state of the networked service,
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1184
         which MUST be one of the following values:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1185
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1186
         <dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1187
           <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1188
             <dfn id="dom-networkservice-AVAILABLE" title="dom-networkservice-AVAILABLE">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1189
               <code>AVAILABLE</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1190
             </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1191
              (numeric value
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1192
             1)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1193
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1194
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1195
           </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1196
           <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1197
             <p>The object is connected to its service endpoint.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1198
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1199
            </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1200
           </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1201
           <dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1202
             <dfn id="dom-networkservice-UNAVAILABLE" title="dom-networkservice-UNAVAILABLE">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1203
               <code>UNAVAILABLE</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1204
             </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1205
              (numeric value
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1206
             2)
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1207
           </dt>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1208
           <dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1209
             <p>The object is not connected to its service endpoint.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1210
            </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1211
           </dd>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1212
         </dl>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1213
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1214
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1215
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1216
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1217
         <h3>Events</h3>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1218
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1219
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1220
         The following are the event handlers (and their corresponding event handler event types) that must be supported, as IDL attributes, by all objects implementing the
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1221
         <a href="#networkservice"><code>NetworkService</code></a> interface:
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1222
       </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1223
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1224
       <table border="1">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1225
        <thead>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1226
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1227
            <th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1228
              <span title="event handlers">Event handler</span>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1229
            </th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1230
            <th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1231
              <span>Event handler event type</span>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1232
            </th>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1233
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1234
        </thead>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1235
        <tbody>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1236
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1237
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1238
              <dfn id="dom-networkservice-onmessage" title="dom-NetworkService-onmessage">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1239
                <code>onmessage</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1240
              </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1241
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1242
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1243
              <code title="event-message">message</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1244
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1245
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1246
          <tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1247
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1248
              <dfn id="dom-networkservice-onreadystatechange" title="dom-NetworkService-onreadystatechange">
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1249
                <code>onreadystatechange</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1250
              </dfn>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1251
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1252
            <td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1253
              <code title="event-onreadystatechange">readystatechange</code>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1254
            </td>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1255
          </tr>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1256
        </tbody>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1257
      </table>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1258
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1259
      <p>
182
Robin Berjon <robin@berjon.com>
parents: 181
diff changeset
  1260
         Events with an event type of <code>message</code> defined in this specification are <a href="http://dev.w3.org/html5/postmsg/#messageevent" class="externalDFN"><code>MessageEvent</code></a> objects as defined in [[!POSTMSG]].
180
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1261
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1262
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1263
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1264
         Events with an event type of <code>readystatechange</code> defined in this specification are simple <code>Event</code> objects.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1265
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1266
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1267
      </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1268
   </section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1269
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1270
      <section>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1271
            <h2>Service Discovery</h2>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1272
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1273
      <p>
182
Robin Berjon <robin@berjon.com>
parents: 181
diff changeset
  1274
         A <a>user agent</a> conforming to this specification MAY implement <acronym title="Simple Service Discovery Protocol">SSDP</acronym> [[!UPNP-DEVICEARCH11]] and Zeroconf [[!ZEROCONF]] service discovery mechanisms
180
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1275
         to enable Web pages to request and connect with HTTP services running on networked devices, discovered via either mechanism, through this API. When a <a>user agent</a> implements either of these service discovery mechanisms, then it MUST conform to the corresponding algorithms provided in this section of the specification.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1276
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1277
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1278
         This section presents how the results of these two service discovery
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1279
         mechanisms will be matched to requested service types and how their properties will be applied to any resulting <a href="#networkservice"><code>NetworkService</code></a> objects.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1280
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1281
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1282
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1283
         It is expected that user agents will perform these service discovery mechansisms asynchronously and periodically update the <a>list of networked devices</a> as required. The timing of any
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1284
         service discovery mechanisms is an implementation detail left to the discretion of the implementer (e.g. once on user agent start-up, every X seconds during user agent execution or on
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1285
         invocation of this API from a Web page).
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1286
      </p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1287
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1288
      <p>
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1289
         The <dfn>list of available service records</dfn> is a single dynamic internal lookup table within user agents that is used to track the current services available in the network at any given time.
ee3a89da06e1 First draft of Networked Service Discovery and Messaging
Rich Tibbett <richt@opera.com>
parents:
diff changeset
  1290
         At any point during the running of either of the two service discovery mechanisms then existing entries within this tab