--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/helper/udp-echo-helper.cc	Thu Mar 27 12:20:14 2008 -0700
@@ -0,0 +1,64 @@
+#include "udp-echo-helper.h"
+#include "ns3/udp-echo-server.h"
+#include "ns3/udp-echo-client.h"
+#include "ns3/uinteger.h"
+
+namespace ns3 {
+
+UdpEchoServerHelper::UdpEchoServerHelper ()
+  : m_port (9)
+{}
+
+void 
+UdpEchoServerHelper::SetPort (uint16_t port)
+{
+  m_port = port;
+}
+ApplicationContainer 
+UdpEchoServerHelper::Build (NodeContainer c)
+{
+  ApplicationContainer apps;
+  for (NodeContainer::Iterator i = c.Begin (); i != c.End (); ++i)
+    {
+      Ptr<Node> node = *i;
+      Ptr<UdpEchoServer> server = CreateObject<UdpEchoServer> ("Port", Uinteger (m_port));
+      node->AddApplication (server);
+      apps.Add (server);
+    }
+  return apps;
+}
+
+UdpEchoClientHelper::UdpEchoClientHelper ()
+{
+  m_factory.SetTypeId (UdpEchoClient::GetTypeId ());
+}
+void 
+UdpEchoClientHelper::SetRemote (Ipv4Address ip, uint16_t port)
+{
+  m_remoteIp = ip;
+  m_remotePort = port;
+}
+void 
+UdpEchoClientHelper::SetAppAttribute (std::string name, Attribute value)
+{
+  m_factory.Set (name, value);
+}
+
+ApplicationContainer 
+UdpEchoClientHelper::Build (NodeContainer c)
+{
+  ApplicationContainer apps;
+  for (NodeContainer::Iterator i = c.Begin (); i != c.End (); ++i)
+    {
+      Ptr<Node> node = *i;
+      Ptr<UdpEchoClient> client = m_factory.Create<UdpEchoClient> ();
+      client->SetRemote (m_remoteIp, m_remotePort);
+      node->AddApplication (client);
+      apps.Add (client);
+    }
+  return apps;  
+}
+
+
+
+} // namespace ns3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/helper/udp-echo-helper.h	Thu Mar 27 12:20:14 2008 -0700
@@ -0,0 +1,39 @@
+#ifndef UDP_ECHO_HELPER_H
+#define UDP_ECHO_HELPER_H
+
+#include <stdint.h>
+#include "application-container.h"
+#include "node-container.h"
+#include "ns3/object-factory.h"
+#include "ns3/ipv4-address.h"
+
+namespace ns3 {
+
+class UdpEchoServerHelper
+{
+public:
+  UdpEchoServerHelper ();
+  void SetPort (uint16_t port);
+  ApplicationContainer Build (NodeContainer c);
+private:
+  uint16_t m_port;
+};
+
+class UdpEchoClientHelper
+{
+public:
+  UdpEchoClientHelper ();
+
+  void SetRemote (Ipv4Address ip, uint16_t port);
+  void SetAppAttribute (std::string name, Attribute value);
+  ApplicationContainer Build (NodeContainer c);
+ private:
+  ObjectFactory m_factory;
+  Ipv4Address m_remoteIp;
+  uint16_t m_remotePort;
+};
+
+
+} // namespace ns3
+
+#endif /* UDP_ECHO_HELPER_H */