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<p class=MsoNormal>I am working on an OpenId 2.0 RP implementation in C++ for a
web service I am developing. The idea is to use OpenId to authenticate users’
access to the API which is used to build micro-blogging sites on top of the
framework. Due to the nature of the platform, I am forced to implement the RP
logic from scratch. The C++ libraries found are all 1.1.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This question is based on the latest draft of OpenID
Authentication 2.0 (11). Section 2 describe the User-Supplied Identifier, and
section 3 bullet 2 provided the workflow, allowing users to provide a user ID
or a server ID. Section 7.3.1 provides a little more information but not much.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The document is not very clear about the difference and how
to decide what ID the user supplied. It is critical as the end of section 7.3.1
requires special value of the id fields to be used to a server Id. If the ID
leads to a XRDS document, I am guessing that if that document contains an OP
Identifier element, it might mean that this is a server Id, but what if it also
contains a claimed Id element? Is that not allowed? And in that case, is the
Canonical Id ignored for server Ids? But this theory only works for XRDS
discovery. What about HTML discovery?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Can anyone help clarify this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Eran Hammer-Lahav<o:p></o:p></p>
<p class=MsoNormal>Hueniverse, LLC<o:p></o:p></p>
<p class=MsoNormal><a href="http://hueniverse.com">http://hueniverse.com</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
<br>
</span><a href="http://feeds.feedburner.com/~r/Hueniverse/~6/1"><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:blue;
text-decoration:none'><img border=0 width=468 height=60 id="_x0000_i1025"
src="cid:image001.gif@01C7CFCE.AC528410"
alt="Hueniverse - adventures in micro-blogging"></span></a><o:p></o:p></p>
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