lighttpd and 404 error

[scar <scar%drigon.com@localhost>]

i installed lighttpd from pkgsrc, version lighttpd-1.4.35nb1 and i'm
just trying to test out the server and get a directory listing of the
server root.  but when i try to browse to http://localhost i am getting
a 404 error.

in lighttpd.conf:
var.server_root = "/srv/www"
server.document-root = server_root + "/htdocs"

/srv didn't even exist so i thought i'd create those directories but
unfortunately that hasn't solved the issue.  is it a permissions
problem?  everything was owned by root.wheel:

# ls -laR /srv
total 6
drwxr-xr-x   3 root  wheel  512 Oct 28 21:19 ./
drwxr-xr-x  22 root  wheel  512 Oct 28 21:19 ../
drwxr-xr-x   3 root  wheel  512 Oct 28 22:00 www/

/srv/www:
total 6
drwxr-xr-x  3 root  wheel  512 Oct 28 22:00 ./
drwxr-xr-x  3 root  wheel  512 Oct 28 21:19 ../
drwxr-xr-x  2 root  wheel  512 Oct 28 22:00 htdocs/

/srv/www/htdocs:
total 4
drwxr-xr-x  2 root  wheel  512 Oct 28 22:00 ./
drwxr-xr-x  3 root  wheel  512 Oct 28 22:00 ../
#

nothing is logged to error.log, and in access.log there's just a bunch
of lines like this:
127.0.0.1 localhost - [28/Oct/2014:22:02:31 -0700] "GET / HTTP/1.0" 404
345 "-" "Lynx/2.8.7rel.2 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/1.0.1i"