--- loncom/auth/lonacc.pm	2018/12/17 21:43:05	1.172
+++ loncom/auth/lonacc.pm	2018/12/29 23:24:52	1.174
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.172 2018/12/17 21:43:05 raeburn Exp $
+# $Id: lonacc.pm,v 1.174 2018/12/29 23:24:52 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -517,7 +517,7 @@ sub handler {
                 my $preserved;
                 foreach my $pair (split(/&/,$query)) {
                     my ($name, $value) = split(/=/,$pair);
-                    unless ($name eq 'symb') {
+                    unless (($name eq 'symb') || ($name eq 'usehttp')) {
                         $preserved .= $pair.'&';
                     }
                     if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
@@ -558,6 +558,7 @@ sub handler {
             my $lonhost = &Apache::lonnet::host_from_dns($hostname);
             if ($lonhost) {
                 my $actual = &Apache::lonnet::absolute_url($hostname);
+                my $exphostname = &Apache::lonnet::hostname($lonhost);
                 my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
                 unless ($actual eq $expected) {
                     $env{'request.use_absolute'} = $expected;