WebDAV spam

I've been writing a WebDAV server in Common Lisp lately which means I've been leaving it running for long periods of time. Check out this strange request I found when I got home tonight:

SEARCH / HTTP/1.0
Host: 127.0.0.1
Content-Type: text/xml
Content-Length: 1399

<?xml version="1.0"?>
<g:searchrequest xmlns:g="DAV:">
<g:sql>Select "DAV:displayname" from scope()</g:sql>
</g:searchrequest>


SEARCH is part of DASL, an extension to WebDAV. It looks like somebody thought I might be a SharePoint server?