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<p style="margin: 10px 0 0 0">To capture the thoughts I should have captured earlier:</p>
<p style="margin: 10px 0 0 0">To my mind there are three approaches to doing this.</p>
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We could do the bare minimum to stop using the synchronous API. We could just use the call back (or AST as I think of them) to call our "paint the eds" method. This makes the warning go away but doesn't help the end user's experience.
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We could do a variety of things to start filling in the real estate while the download is on-going. For example we could draw the default logo and the entityID of the preferred IdPs. Then when the metadata is down we could do a refresh. This is pretty much where my mind was when I entered this case. Its a not insignificant bit of work and what we have right now is good enough. Further the Shibboleth EDS is the one which will start to creak first since almost by definition it knows/will know about all the shib IdPs in the world (and a fair few other types).
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We could go the full bhuna and do the AJAX thing. We rejected that at the design stage - we really do not want server side code beyond "serve this file". Further I fervently believe that we do not have the time to design such a protocol and as a system engineer I am incapable of just winging it (which makes me a lousy web dev...)
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