Failing downloads from Tuscany SCA Eclipse update site

The file [1] on the Tuscany SCA Eclipse update site is very large (72MB) and downloads of this file by Eclipse frequently fail. Using a dynamically generated site.xml file that uses a mirror site for the feature and plugin downloads would improve this. Apache Directory Studio has implemented a solution; see [2] for an example of the dynamically generated site.xml file, and [3] for the sources and description.

[1] http://www.apache.org/dist/tuscany/java/sca/1.6.2/tuscany-sca-1.6.2-updatesite/features/org.apache.tuscany.sca.feature.core-1.6.2.jar
[2] http://directory.apache.org/studio/update/1.x/site.xml
[3] http://svn.apache.org/repos/asf/directory/studio/tags/1.5.3.v20100330/updatesite/