serve_http() {
    lightpid=$((10000 + $$ % 30000))
    cat > light.conf <<EOF
    server.document-root       = "$PWD"
    server.errorlog            = "$PWD/error.log"
    server.port                = $lightpid
    server.bind                = "localhost"
    server.pid-file            = "$PWD/light.pid"
    index-file.names           = ()
EOF
    trap "finish_http \"$PWD\"" EXIT
    lighttpd -f light.conf || exit 200
    ps `cat light.pid` > /dev/null 2>&1 || exit 200
    baseurl="http://localhost:$lightpid"
}

finish_http() {
    test -e "$1/light.pid" && kill `cat "$1/light.pid"` || true
}

check_remote_http() {
  if ! curl -fI "$1"; then
    echo Cannot reach "$1"
    exit 200
  fi
}