--- loncom/lonnet/perl/lonnet.pm	2010/05/03 16:41:57	1.1061
+++ loncom/lonnet/perl/lonnet.pm	2010/05/04 15:21:29	1.1062
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1061 2010/05/03 16:41:57 www Exp $
+# $Id: lonnet.pm,v 1.1062 2010/05/04 15:21:29 droeschl Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -5452,6 +5452,8 @@ sub metadata_query {
     my @server_list = (defined($server_array) ? @$server_array
                                               : keys(%libserv) );
     for my $server (@server_list) {
+#SD remove this
+&logthis("Querying server:$server");
 	unless ($custom or $customshow) {
 	    my $reply=&reply("querysend:".&escape($query),$server);
 	    $rhash{$server}=$reply;
@@ -9659,6 +9661,12 @@ sub get_dns {
 	return %libserv;
     }
 
+    sub unique_library {
+	#2x reverse removes all hostnames that appear more than once
+        my %unique = reverse &all_library();
+        return reverse %unique;
+    }
+
     sub get_servers {
 	&load_hosts_tab() if (!$loaded);
 
@@ -9682,6 +9690,11 @@ sub get_dns {
 	return %result;
     }
 
+    sub get_unique_servers {
+        my %unique = reverse &get_servers(@_);
+	return reverse %unique;
+    }
+
     sub host_domain {
 	&load_hosts_tab() if (!$loaded);