We see now that in the error case, the XML text passed to xmlrpc::invoke is empty (see the two single quotes in Notice: xmlrpc::invoke last chars: ''). It seems, as the xml-rpc package has problems gracefully handling such cases. I've added a test that should handle this test more gracefully to CVS [1].
What we know now is that for whatever reason, an xml-rpc request with 100k size ends up as an empty string in xmlrpc::invoke. This means, that xmlrpc::get_content (called by the www/index.tcl returns empty). I would recommend to try to replace the body of xmlrpc::get_content by the single line (when you use NaviServer):
return [ns_getcontent -as_file false -binary false]
Let's hope this helps.
-g
[1] http://cvs.openacs.org/browse/OpenACS/openacs-4/packages/xml-rpc/tcl/xml-rpc-procs.tcl?r1=1.9&r2=1.10
