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    On 3/12/11 2:56 PM, peter williams wrote:
    <blockquote cite="mid:SNT143-ds38E1595F06FC93A4BED9792CA0@phx.gbl"
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        <p class="MsoNormal">You know, if you want to generate some
          sales, you want to extend the validation engine of virtuoso
          &nbsp;to include the WRAP token. </p>
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    </blockquote>
    <blockquote cite="mid:SNT143-ds38E1595F06FC93A4BED9792CA0@phx.gbl"
      type="cite">
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        <p class="MsoNormal">Then anyone of a million Azure ACS tenants
          can use an on-premise instance of the sparql server, with
          client authenticating to its sparql endpoint via the websso
          handoff chain. Oo &#8211;premise is relative, since anyone can how
          host any VM in the azure cloud, these days. (id be interested
          in evaluating a packaged VM, ready built for cloud hosting&#8230; as
          a working OS&#8230; with just a sparql endpoint visible)</p>
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    </blockquote>
    Will look into this.<br>
    <br>
    You can instantiate your own Virtuoso via Amazon EC2 [1] :-)&nbsp; <br>
    <blockquote cite="mid:SNT143-ds38E1595F06FC93A4BED9792CA0@phx.gbl"
      type="cite">
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        <p class="MsoNormal"><o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal">In the ACS SDK, samples, consult WCFAuthMgt
          sample code. It has the WRAP/SWT token parser/hmac-validator
          &nbsp;code, and shows how to receive the handoff from ACS from the
          www-authorization header value relayed by the initiator. The
          &#8220;token&#8221; format is just a query-string, with a mac on the end.
          Could not be much simpler, at this point (unless one recodes
          that into json, I suppose).<o:p></o:p></p>
        <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
        <p class="MsoNormal">Since the sparql server is being used as a
          SUPPORTING entity for webid validators, it&#8217;s as useful for the
          endpoint acting in this capability to support _<i>handoff
            tokens</i>_ &nbsp;as receive webid assertions directly. Then it
          fits into n-tier SOA used in the mainstream world, well,
          offloading work from the listeners.</p>
      </div>
    </blockquote>
    <br>
    Links:<br>
    <br>
    1.
<a class="moz-txt-link-freetext" href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtInstallationEC2">http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtInstallationEC2</a><br>
    2. <a class="moz-txt-link-freetext" href="http://ods.openlinksw.com/wiki/ODS/ODSInstallationEC2">http://ods.openlinksw.com/wiki/ODS/ODSInstallationEC2</a> -- ODS
    installation via EC2 Cloud<br>
    3.
    <a class="moz-txt-link-freetext" href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSBBCMusicProgNatureFoodAndDBpedia36">http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSBBCMusicProgNatureFoodAndDBpedia36</a>
    -- in addition to basic Virtuoso + ODS you have stuff like DBpedia +
    BBC etc..<br>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 

Regards,

Kingsley Idehen              
President &amp; CEO 
OpenLink Software     
Web: <a class="moz-txt-link-freetext" href="http://www.openlinksw.com">http://www.openlinksw.com</a>
Weblog: <a class="moz-txt-link-freetext" href="http://www.openlinksw.com/blog/~kidehen">http://www.openlinksw.com/blog/~kidehen</a>
Twitter/Identi.ca: kidehen 




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