Suggestion on XOP media type

Hi XMLP WG,

Here is a review comment to XOP Last Call specification. Sorry about the late
feedback.

Section 5, the need for XOP-specific media type (e.g.
application/soap_xop+xml) is described. I don't think such an approach is
feasible since registering a new media type is a very expensive process. I
suggest to use "start-info" parameter of "multipart/related" type instead to
indicate that the content is encoded in XOP:

Content-Type: multipart/related;type=application/soap+xml;
               start="<mymessage.xml@example.org>";
               start-info="http://www.w3.org/2003/12/xop/include"

-- 
Jun Fujisawa
<mailto:fujisawa.jun@canon.co.jp>