aggregate PacketSocketFactory when requested to.

src/helper/packet-socket-helper.cc

@@ -0,0 +1,17 @@
+#include "packet-socket-helper.h"
+#include "ns3/packet-socket-factory.h"
+
+namespace ns3 {
+
+void 
+PacketSocketHelper::Build (NodeContainer c)
+{
+  for (NodeContainer::Iterator i = c.Begin (); i != c.End (); ++i)
+    {
+      Ptr<Node> node = *i;
+      Ptr<PacketSocketFactory> factory = CreateObject<PacketSocketFactory> ();
+      node->AggregateObject (factory);
+    }
+}
+
+} // namespace ns3

src/helper/packet-socket-helper.h

@@ -0,0 +1,25 @@
+#ifndef PACKET_SOCKET_HELPER_H
+#define PACKET_SOCKET_HELPER_H
+
+#include "ns3/node-container.h"
+
+namespace ns3 {
+
+/**
+ * \brief Give ns3::PacketSocket powers to ns3::Node.
+ */
+class PacketSocketHelper
+{
+public:
+  /**
+   * \param c container of node pointers
+   *
+   * For each node in the input container, aggregate a ns3::PacketSocketFactory
+   * object instance.
+   */
+  void Build (NodeContainer c);
+};
+
+} // namespace ns3
+
+#endif /* PACKET_SOCKET_HELPER_H */