--- loncom/LondConnection.pm	2010/12/21 11:17:33	1.50
+++ loncom/LondConnection.pm	2018/09/02 18:30:54	1.53.2.1
@@ -1,7 +1,7 @@
 #   This module defines and implements a class that represents
 #   a connection to a lond daemon.
 #
-# $Id: LondConnection.pm,v 1.50 2010/12/21 11:17:33 foxr Exp $
+# $Id: LondConnection.pm,v 1.53.2.1 2018/09/02 18:30:54 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -189,7 +189,8 @@ sub new {
 		     LocalKeyFile       => "",
                      CipherKey          => "",
                      LondVersion        => "Unknown",
-                     Cipher             => undef};
+                     Cipher             => undef,
+		     ClientData         => undef};
     bless($self, $class);
     unless ($self->{Socket} = IO::Socket::INET->new(PeerHost => $self->{Host},
 					       PeerPort => $self->{Port},
@@ -200,6 +201,7 @@ sub new {
 	return undef;		# Inidicates the socket could not be made.
     }
     my $socket = $self->{Socket}; # For local use only.
+    $socket->sockopt(SO_KEEPALIVE, 1); # Turn on keepalive probes when idle.
     #  If we are local, we'll first try local auth mode, otherwise, we'll try
     #  the ssl auth mode:
 
@@ -340,9 +342,12 @@ sub Readable {
 	$self->Transition("Disconnected");
 	return -1;
     }
-    #  Append the data to the buffer.  And figure out if the read is done:
+    # If we actually got data, reset the timeout.
 
-    $self->{TimeoutRemaining}   = $self->{TimeoutValue}; # getting data resets the timeout period.
+    if (length $data) {
+	$self->{TimeoutRemaining}   = $self->{TimeoutValue}; # getting data resets the timeout period.
+    }
+    #  Append the data to the buffer.  And figure out if the read is done:
 
     &Debug(9,"Received from host: ".$data);
     $self->{TransactionReply} .= $data;
@@ -1140,6 +1145,30 @@ sub PeerVersion {
    return $version;
 }
 
+#
+#  Manipulate the client data field
+#
+sub SetClientData {
+    my ($self, $newData) = @_;
+    $self->{ClientData} = $newData;
+}
+#
+#  Get the current client data field.
+#
+sub GetClientData {
+    my $self = shift;
+    return $self->{ClientData};
+}
+
+#
+# Get the HostID of our peer 
+#
+
+sub PeerLoncapaHim {
+    my $self = shift;
+    return $self->{LoncapaHim};
+}
+
 1;
 
 =pod