--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlib/contacts/ScheduledLink.h	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,91 @@
+/*
+ *    Copyright 2004-2006 Intel Corporation
+ * 
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifndef _SCHEDULED_LINK_H_
+#define _SCHEDULED_LINK_H_
+
+#include "Link.h"
+#include <set>
+
+namespace dtn {
+
+/**
+ * Abstraction for a SCHEDULED link.
+ *
+ * Scheduled links have a list  of future contacts.
+ *
+*/
+
+class FutureContact;
+
+class ScheduledLink : public Link {
+public:
+    typedef std::set<FutureContact*> FutureContactSet;
+
+    /**
+     * Constructor / Destructor
+     */
+    ScheduledLink(std::string name, ConvergenceLayer* cl,
+                  const char* nexthop);
+    
+    virtual ~ScheduledLink();
+    
+    /**
+     * Return the list of future contacts that exist on the link
+     */
+    FutureContactSet* future_contacts() { return fcts_; }
+
+    // Add a future contact
+    void add_fc(FutureContact* fc) ;
+
+    // Remove a future contact
+    void delete_fc(FutureContact* fc) ;
+
+    // Convert a future contact to an active contact
+    void convert_fc(FutureContact* fc) ;
+
+    // Return list of all future contacts
+    FutureContactSet* future_contacts_list() { return fcts_; }
+    
+protected:
+    FutureContactSet*  fcts_;
+};
+
+/**
+ * Abstract base class for FutureContact
+ * Relevant only for scheduled links.
+ */
+class FutureContact {
+public:
+    /**
+     * Constructor / Destructor
+     */
+    FutureContact()
+        : start_(0), duration_(0)
+    {
+    }
+    
+    /// Time at which contact starts, 0 value means not defined
+    time_t start_;
+    
+    /// Duration for this future contact, 0 value means not defined
+    time_t duration_;
+};
+
+
+} // namespace dtn
+
+#endif /* _SCHEDULED_LINK_H_ */