On Mon, 17 Mar 2008 22:29:54 +0100, Sunava Dutta <[EMAIL PROTECTED]> wrote:
There are many threats against a cross-domain communication mechanism, so we believe the simplicity of XDR makes it more suitable than attempting to plumb cross-domain capabilities into the existing XHR object. In particular, we are concerned that attempting to introduce new restrictions/added complexity on an XHR object when it is used in a cross-domain manner will result in a confusing programming model for the web developer.

Could you elaborate on why you consider the proposed model to be confusing for Web developers? It's in fact as simple as:

  var client = new XMLHttpRequest()
  client.onreadystatechange = function() { ...}
  client.open("GET", "http://cross-site.example.org/resource";)
  client.send()

Indeed, as complex as normal usage of XMLHttpRequest. The model proposed doesn't just solve it for XMLHttpRequest, it can also be used for cross-site XSLT:

  <?xml-stylesheet
    href="http://cross-site.example.org/transform";
    type="application/xslt+xml"?>

Again, no changes required in the way you initiate the request. The server-side is not much more complex than what has been proposed by Microsoft although a preflight request has to be handled by the server to ensure that the server is ok with custom methods, a request entity body, etc.


--
Anne van Kesteren
<http://annevankesteren.nl/>
<http://www.opera.com/>

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