network, applications, internet-apps: Add AssignStreams method to application base class

src/applications/helper/on-off-helper.cc

@@ -87,11 +87,7 @@ OnOffHelper::AssignStreams(NodeContainer c, int64_t stream)
         node = (*i);
         for (uint32_t j = 0; j < node->GetNApplications(); j++)
         {
-            Ptr<OnOffApplication> onoff = DynamicCast<OnOffApplication>(node->GetApplication(j));
-            if (onoff)
-            {
-                currentStream += onoff->AssignStreams(currentStream);
-            }
+            currentStream += node->GetApplication(j)->AssignStreams(currentStream);
         }
     }
     return (currentStream - stream);

src/applications/model/onoff-application.h

@@ -122,14 +122,7 @@ class OnOffApplication : public Application
      */
     Ptr<Socket> GetSocket() const;
 
-    /**
-     * \brief Assign a fixed random variable stream number to the random variables
-     * used by this model.
-     *
-     * \param stream first stream index to use
-     * \return the number of stream indices assigned by this model
-     */
-    int64_t AssignStreams(int64_t stream);
+    int64_t AssignStreams(int64_t stream) override;
 
   protected:
     void DoDispose() override;

src/internet-apps/model/dhcp-client.h

@@ -80,15 +80,7 @@ class DhcpClient : public Application
      */
     Ipv4Address GetDhcpServer();
 
-    /**
-     * Assign a fixed random variable stream number to the random variables
-     * used by this model. Return the number of streams (possibly zero) that
-     * have been assigned.
-     *
-     * \param stream First stream index to use
-     * \return the number of stream indices assigned by this model
-     */
-    int64_t AssignStreams(int64_t stream);
+    int64_t AssignStreams(int64_t stream) override;
 
   protected:
     void DoDispose() override;

src/internet-apps/model/radvd.h

@@ -85,15 +85,7 @@ class Radvd : public Application
      */
     void AddConfiguration(Ptr<RadvdInterface> routerInterface);
 
-    /**
-     * Assign a fixed random variable stream number to the random variables
-     * used by this model.  Return the number of streams (possibly zero) that
-     * have been assigned.
-     *
-     * \param stream first stream index to use
-     * \return the number of stream indices assigned by this model
-     */
-    int64_t AssignStreams(int64_t stream);
+    int64_t AssignStreams(int64_t stream) override;
 
   protected:
     void DoDispose() override;

src/network/model/application.cc

@@ -132,4 +132,11 @@ Application::StopApplication()
     NS_LOG_FUNCTION(this);
 }
 
+int64_t
+Application::AssignStreams(int64_t stream)
+{
+    NS_LOG_FUNCTION(this << stream);
+    return 0;
+}
+
 } // namespace ns3

src/network/model/application.h

@@ -105,6 +105,15 @@ class Application : public Object
      */
     void SetNode(Ptr<Node> node);
 
+    /**
+     * \brief Assign a fixed random variable stream number to the random variables
+     * used by this Application object.
+     *
+     * \param stream first stream index to use
+     * \return the number of stream indices assigned by this Application object
+     */
+    virtual int64_t AssignStreams(int64_t stream);
+
     /**
      * \brief Common callback signature for packet delay and address.
      *