- From: Mercurial notifier <cvsmail@w3.org>
- Date: Wed, 15 Aug 2012 14:40:52 +0000
- To: public-dap-commits@w3.org
changeset: 188:53625f47e1f1
tag: tip
user: Claes Nilsson <claes1.nilsson@sonymobile.com>
date: Wed Aug 15 16:39:07 2012 +0200
files: wi-addendum-local-services/Overview.html
description:
Wen Intents Addendum for local Services: Editorial corrections
diff -r 5a7c58d2a996 -r 53625f47e1f1 wi-addendum-local-services/Overview.html
--- a/wi-addendum-local-services/Overview.html Wed Aug 15 13:28:24 2012 +0900
+++ b/wi-addendum-local-services/Overview.html Wed Aug 15 16:39:07 2012 +0200
@@ -48,6 +48,8 @@
editors: [
{ name: "Claes Nilsson",
company: "Sony Mobile", companyURL: "http://www.sonymobile.com/se/" },
+ { name: "Norifumi Kikkawa",
+ company: "Sony Corporation", companyURL: "tbd"},
],
// authors, add as many as you like.
@@ -149,15 +151,11 @@
stated in this specification. </li>
<li><dfn>Web Intents enabled UPnP device</dfn>: A <a>Web Intents enabled UPnP device</a> MUST support [[!UPNP-DEVICEARCH]] and the conformance criteria
stated in this specification. </li>
- <li><dfn>mDNS enabled User Agent</dfn>: A <a>mDNS enabled User Agent</a> MUST support Web Intents [[!WEBINTENTS]] and the conformance criteria
+ <li><dfn>mDNS enabled User Agent</dfn>: An <a>mDNS enabled User Agent</a> MUST support Web Intents [[!WEBINTENTS]] and the conformance criteria
stated in this specification. </li>
- <li><dfn>Web Intents enabled mDNS device</dfn>: A <a>Web Intents enabled mDNS device</a> MUST support [[!DNS-SD]], [[!MDNS]] the conformance criteria
+ <li><dfn>Web Intents enabled mDNS device</dfn>: A <a>Web Intents enabled mDNS device</a> MUST support [[!DNS-SD]], [[!MDNS]] and the conformance criteria
stated in this specification. </li>
</ul>
-
- <p>
- TBD definitions of User Agents and devices for other local discovery and communication technologies...
- </p>
</p>
<p>
Implementations that use ECMAScript to implement the APIs defined in
@@ -209,10 +207,10 @@
<section>
<h3>mDNS related terms</h3>
<p>
- The <a>mDNS enabled User Agent</a> has the role of a <dfn id="dfn-registration">DNS client</dfn> with capability of DNS-SD.
+ The <a>mDNS enabled User Agent</a> has the role of a <dfn id="dfn-registration">DNS client</dfn> with capability of [[!DNS-SD]].
</p>
<p>
- The <a>Web Intents enabled mDNS device</a> discovered by the <a>mDNS enabled User Agent</a> has the roles of <dfn id="dfn-registration">service</dfn> according to mDNS and DNS-SD.
+ The <a>Web Intents enabled mDNS device</a> discovered by the <a>mDNS enabled User Agent</a> has the roles of <dfn id="dfn-registration">service</dfn> according to [[!MDNS]] and [[!DNS-SD]].
</p>
</section>
@@ -282,7 +280,7 @@
comma. Commas included in action strings <em class="rfc2119" title="must">must</em> be percent-encoded as
defined in [[!RFC3986]], section-2.1.
<br /> <br />
- This header allows the <a>UPnP enabled User Agent</a> to filter received SSDP messages so that the <a>UPnP enabled User Agent</a>s only have to
+ This header allows the <a>UPnP enabled User Agent</a> to filter received SSDP messages so that the <a>UPnP enabled User Agent</a> only has to
retrieve Web Intents documents for matching Web Intents Actions.
</li>
</ul>
@@ -493,11 +491,11 @@
<h4>Web Intents service type for DNS-SD</h4>
<p>
- The <a>Web Intents enabled mDNS device</a> <em class="rfc2119" title="must">must</em> support DNS-SD with a SRV record of the <code>webintents</code> service type.
+ The <a>Web Intents enabled mDNS device</a> <em class="rfc2119" title="must">must</em> support [[!DNS-SD]] with a SRV record of the <code>webintents</code> service type.
</p>
<p class="note">
- A service type <code>webintents</code> should be registered in IANA (http://www.iana.org/form/ports-services).
+ A service type <code>webintents</code> should be registered in [[!IANA-SRVPORT-REG]].
</p>
<p>
@@ -506,7 +504,7 @@
<ul>
<li>
<code>location</code>: <em class="rfc2119" title="required">required</em>. States the location to the Web Intents document in the <a class="internalDFN" href="#dfn-web-intents-enabled-mdns-device">Web Intents enabled mDNS device</a>.
- The value of this header is path to be concatinated with a host of the <a class="internalDFN" href="#dfn-web-intents-enabled-mdns-device">Web Intents enabled mDNS device</a> to determine the location. The definition of the Web Intents document is same as that for UPnP.
+ The value of this header is path to be concatenated with a host of the <a class="internalDFN" href="#dfn-web-intents-enabled-mdns-device">Web Intents enabled mDNS device</a> to determine the location. The definition of the Web Intents document is the same as for UPnP.
</li>
<li>
<code>action</code>: <em class="rfc2119" title="optional">optional</em>. If supported, states the Web Intents
@@ -514,9 +512,9 @@
match the <code>action</code> attributes of the Service registration markup in the Web Intents document. To support more than
one Web Intents <code>action</code> the action strings <em class="rfc2119" title="must">must</em> be separated with
comma. Commas included in action strings <em class="rfc2119" title="must">must</em> be percent-encoded as
- defined in RFC3986, section-2.1.
+ defined in [[!RFC3986]], section-2.1.
<br> <br>
- This allows the <a>mDNS enabled User Agent</a> to filter received mDNS messages so that the <a>mDNS enabled User Agent</a>s only have to
+ This allows the <a>mDNS enabled User Agent</a> to filter received mDNS messages so that the <a>mDNS enabled User Agent</a> only has to
retrieve Web Intents documents for matching Web Intents Actions.
</li>
</ul>
@@ -531,92 +529,96 @@
The <a>mDNS enabled User Agent</a> <em class="rfc2119" title="must">must</em> support discovery of <a>Web Intents enabled mDNS device<a>s through mDNS and DNS-SD
according to [[!MDNS]], [[!DNS-SD]] and according to the Web Intents specific DNS records defined in this specification, section 5.1.
</p>
+
+ <section class='informative'>
+ <h4>Dynamic Service registration</h4>
+ <p>
+ When the navigator.startActivity method [[!WEBINTENTS]] is called, the <a>mDNS enabled User Agent</a> typically runs the following steps:
+ </p>
+
+ <ol class="rule">
+ <li>
+ Send a multicast PTR query of the <code>_webintents._tcp.local</code> in the format specified by [[!MDNS]] and [[!DNS-SD]].
+ <br />
+ </li>
+ <br />
+ <li>
+ For each response, send a unicast TXT query of the webintents service instance in the PTR answer.
+ <br />
+ <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches a TXT answer with the previous answer.
+ </li>
+ <br />
+ <li>
+ For each matching response, i.e. the response TXT record does not have an action parameter or does have an <code>action</code> parameter matching the Action of the invoked intent,
+ send a unicast request with a SRV query of the webintens service instance.
+ <br />
+ <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches a SRV answer with the previous answer.
+ </li>
+ <br />
+ <li>
+ For each response, send a unicast A and/or AAAA query of the host name in the SRV answer.
+ <br />
+ <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches an A and/or AAAA answer with the previous answer.
+ </li>
+ <br />
+ <li>
+ The <a>mDNS enabled User Agent</a> attempts to retrieve the Web Intents document from the discovered <a>Web Intents enabled mDNS device</a>.
+ The destination URL consists of an IP address in the A or AAAA answer, a port number in the SRV record and an absolute path in the <code>location</code> parameter of the TXT record.
+ <br /> <br />
+ If the <a>mDNS enabled User Agent</a> fails to retrieve the Web Intents document it silently disregards the received response.
+ <br /> <br />
+ If the <code>action</code> parameter is present and does not match the <code>action</code> attributes of the Services registered in the retrieved Web Intents
+ document the <a>mDNS enabled User Agent</a> silently disregards the the received response.
+ <br /> <br />
+ Note that following steps are identical to those of UPnP described in 4.2.
+ </li>
+ <br />
+ <li>
+ It is expected that the Web Intents document contains registration markup and the <a>mDNS enabled User Agent</a> interprets this
+ registration markup according to the rules for registration defined by [[!WEBINTENTS]] and register the Services accordingly.
+ </li>
+ <br />
+ <li>
+ The <a>mDNS enabled User Agent</a> makes each dynamically registered Service, that matches the Action of the invoked intent, available for selection
+ by the user, typically by making them visible and selectable in a Web Intents Service picker.
+ </li>
+ <br />
+ <li>
+ Based on user selection of a dynamically registered Service the <a>mDNS enabled User Agent</a> loads the
+ Service handler code as defined by the <code>href</code> attribute in the registration markup for this Service according to the rules for
+ loading Service pages defined in [[!WEBINTENTS]].
+ </li>
+
+ </ol>
+
+ </section>
- <section class="informative">
- <h4>Sample Records</h4>
+ </section>
+ <section class="informative">
+ <h3>Sample Records</h3>
- <p>
- See below for the example records for Web Intents. A <a>mDNS enabled User Agent</a> looking for devices supporting http://webintents.org/view Web Intents can understand that
- it is possible to get a Web Intents document for "LivingRoomTV" at http://192.168.1.47:3619/webntents.html.
- </p>
+ <p>
+ See below for the example records for Web Intents. An <a>mDNS enabled User Agent</a> looking for devices supporting http://webintents.org/view Web Intents can understand that
+ it is possible to get a Web Intents document for "LivingRoomTV" at http://192.168.1.47:3619/webintents.html.
+ </p>
- <ul>
- <li>
- <code>_webintents._tcp.local. 120 IN PTR LivingRoomTV._webintents._tcp.local.</code>: A LivingRoomTV instance serves webintents service.
- </li>
- <li>
- <code>LivingRoomTV._webintents._tcp.local. 120 IN SRV 0 0 3619 TV40EX-W2000.local.</code>: A host "TV40EX-W2000" in the link local network offers the LivingRoomTV webintents service instance in its port 3619.
- </li>
- <li>
- <code>LivingRoomTV._webintents._tcp.local. 120 IN TXT location=/webintents.html action=http://webintents.org/view</code>: It offers http://webintents.org/view type of Web Intents. The absolete path for its Web Intents document is "/webintents.html". Note that the actual binary format of the TXT record value is concatinating key-value pairs each of which is a single byte length followed by 0-255 length key=value character string as defined in [DNS-SD].
- </li>
- <li>
- <code>TV40EX-W2000 120 IN A 192.168.1.47</code>: A host "TV40EX-W2000" is on 192.168.1.47.
- </li>
- </ul>
+ <ul>
+ <li>
+ <code>_webintents._tcp.local. 120 IN PTR LivingRoomTV._webintents._tcp.local.</code>: A LivingRoomTV instance serves webintents service.
+ </li>
+ <li>
+ <code>LivingRoomTV._webintents._tcp.local. 120 IN SRV 0 0 3619 TV40EX-W2000.local.</code>: A host "TV40EX-W2000" in the link local network offers the LivingRoomTV webintents service instance in its port 3619.
+ </li>
+ <li>
+ <code>LivingRoomTV._webintents._tcp.local. 120 IN TXT location=/webintents.html action=http://webintents.org/view</code>: It offers http://webintents.org/view type of Web Intents. The absolete path for its Web Intents document is "/webintents.html". Note that the actual binary format of the TXT record value is concatinating key-value pairs each of which is a single byte length followed by 0-255 length key=value character string as defined in [DNS-SD].
+ </li>
+ <li>
+ <code>TV40EX-W2000 120 IN A 192.168.1.47</code>: A host "TV40EX-W2000" is on 192.168.1.47.
+ </li>
+ </ul>
- <p>
- When the navigator.startActivity method [[!WEBINTENTS]] is called, the <a>mDNS enabled User Agent</a> runs the following steps:
- </p>
-
- <ol class="rule">
- <li>
- Send a multicast PTR query of the <code>_webintents._tcp.local</code> in the format specified by [[!MDNS]] and [[!DNS-SD]].
- <br />
- </li>
- <br />
- <li>
- For each response, send a unicast TXT query of the webintents service instance in the PTR answer.
- <br />
- <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches a TXT answer with the previous answer.
- </li>
- <br />
- <li>
- For each matching response, i.e. the response TXT record does not have an action parameter or does have an <code>action</code> parameter matching the Action of the invoked intent,
- send a unicast request with a SRV query of the webintens service instance.
- <br />
- <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches a SRV answer with the previous answer.
- </li>
- <br />
- <li>
- For each response, send a unicast A and/or AAAA query of the host name in the SRV answer.
- <br />
- <p>This step can be omitted in case that the Web Intents enabled mDNS device attaches an A and/or AAAA answer with the previous answer.
- </li>
- <br />
- <li>
- The <a>mDNS enabled User Agent</a> attempts to retrieve the Web Intents document from the discovered <a>Web Intents enabled mDNS device</a>.
- The destination URL consists of an IP address in the A or AAAA answer, a port number in the SRV record and an absolute path in the <code>location</code> parameter of the TXT record.
- <br /> <br />
- If the <a>mDNS enabled User Agent</a> fails to retrieve the Web Intents document it silently disregards the received response.
- <br /> <br />
- If the <code>action</code> parameter is present and does not match the <code>action</code> attributes of the Services registered in the retrieved Web Intents
- document the <a>mDNS enabled User Agent</a> silently disregards the the received response.
- <br /> <br />
- Note that following steps are identical to those of UPnP described in 4.2.
- </li>
- <br />
- <li>
- It is expected that the Web Intents document contains registration markup and the <a>mDNS enabled User Agent</a> interprets this
- registration markup according to the rules for registration defined by [[!WEBINTENTS]] and register the Services accordingly.
- </li>
- <br />
- <li>
- The <a>mDNS enabled User Agent</a> makes each dynamically registered Service, that matches the Action of the invoked intent, available for selection
- by the user, typically by making them visible and selectable in a Web Intents Service picker.
- </li>
- <br />
- <li>
- Based on user selection of a dynamically registered Service the <a>mDNS enabled User Agent</a> loads the
- Service handler code as defined by the <code>href</code> attribute in the registration markup for this Service according to the rules for
- loading Service pages defined in [[!WEBINTENTS]].
- </li>
-
- </ol>
-
-
- </section>
- </section>
+ </section>
+
</section>
@@ -725,8 +727,7 @@
<section class='appendix'>
<h3>Acknowledgements</h3>
<p>
- Many thanks to Sony Mobile colleagues Anders Isberg, Anders Edenbrandt and Björn Ekberg
- for all support.
+ Many thanks to Sony colleagues Anders Isberg, Naoyuki Sato, Tatsuya Igarashi, Anders Edenbrandt and Björn Ekberg for all support.
<br /> <br />
Many thanks to Robin Berjon for making our lives so much easier with his cool specification editing tool.
</p>
Received on Wednesday, 15 August 2012 14:40:54 UTC