2023-09-15 Fred Gleason <fredg@paravelsystems.com>

* Added a 'Set Timeout' ['TO'] CAE command.
	* Added a 'Touch' ['TH'] CAE command.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>

cae/connection.cpp

@@ -0,0 +1,83 @@
+// connection.cpp
+//
+// UDP connection context for CAE protocol commands
+//
+//   (C) Copyright 2023 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License version 2 as
+//   published by the Free Software Foundation.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#include "connection.h"
+
+Connection::Connection(const SessionId &sid,QObject *parent)
+  : QObject(parent)
+{
+  d_session_id=sid;
+  d_interval=0;
+
+  d_timer=new QTimer(this);
+  d_timer->setSingleShot(true);
+  connect(d_timer,SIGNAL(timeout()),this,SLOT(timerData()));
+}
+
+
+Connection::~Connection()
+{
+  delete d_timer;
+}
+
+
+SessionId Connection::sessionId() const
+{
+  return d_session_id;
+}
+
+
+QString Connection::dump() const
+{
+  return d_session_id.dump();
+}
+
+
+bool Connection::operator!=(const Connection &other) const
+{
+  return (other.d_session_id.address()!=d_session_id.address())||
+    (other.d_session_id.port()!=d_session_id.port());
+}
+
+
+bool Connection::operator<(const Connection &other) const
+{
+  return other.d_session_id<d_session_id;
+}
+
+
+void Connection::setTimeout(int msecs)
+{
+  d_interval=msecs;
+  touch();
+}
+
+
+void Connection::touch()
+{
+  d_timer->stop();
+  d_timer->start(d_interval);
+}
+
+
+void Connection::timerData()
+{
+  emit connectionExpired(d_session_id);
+}