Open social dashboard not working behind proxy (http and https)

The social gadget dashboard doesn't work behind a proxy.

If I try to access the dashboard by connecting to jboss directly (port 8080), I can see the widgets.

But, if I connect through a proxy (apache https/http -> mod_proxy_ajp or mod_proxy_http -> jboss, the widgets don't work, I either get the waiting icon, or the message "Unable to retrieve gadget xml. HTTP error 500"

Tried multiples combination of changes in $NUXEO_INSTALL/server/default/deploy/nuxeo.ear/config/opensocial.properties to change host (ip and name), port, added .scheme but the only way to see the gadget is through direct connection to jboss.

Tried with
nuxeo-dm-5.3.0-GA-jboss
nuxeo-dm-5.3.1-I20100210_0115-jboss

My setup is

client browser -> https connection to apache (serverA) -> mod_proxy_http -> jboss on port 8080 (serverB)

jboss started with ip in bind.conf (BINDHOST=server.ip )

Patrick

already posted some of the setup (opensocial.properties) I tried on the
forum : http://www.nuxeo.org/discussions/thread.jspa?messageID=9086&#10003