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&gt; Disallowing post responses limits the use of the more verbose<BR>
&gt; extensions (e.g. attribute exchange). &nbsp;While this might be accept=
able<BR>
&gt; for Luke's particular use case, it might leave it unsolved for others.=
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<BR>
The POST response is a good point and clearly a valid use case, and I think=
 it&#8217;s supported no matter what we decide to do. It&#8217;s possible t=
o build a receiver that handles POST params if they are present, but otherw=
ise serves up the correct cache headers and Javascript to handle the GET. T=
hat would provide a performance boost in the common case, while still being=
 fully compatible with the spec.<BR>
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