Help BulkSendApplication

[Leticia]

Hello,

I am doing a BulkSendApplication, how can I know when the application
has finished of sending packets if I didnt give a stop time in order
to send all bytes of MaxBytes?

Thank you in advance for your help.

Regards

Leticia

[John Abraham]

I believe there is currently no direct way to do this.

you will have to implement a new callback similar to 

  TracedCallback<Ptr<const Packet> > m_txTrace;

in bulk-send-application.h

 TracedCallback<uint32_t> m_maxBytesSent;

and a call similar to       m_txTrace (packet); in  bulk-send-application.cc

    .AddTraceSource ("MaxBytesSent", "A new packet is created and is sent",

                     MakeTraceSourceAccessor (&BulkSendApplication:: m_maxBytesSent))

  // Check if time to close (all sent)

  if (m_totBytes == m_maxBytes && m_connected)

    {

      m_maxBytesSent (m_maxBytes);

      m_socket->Close ();

      m_connected = false;

    }

Leticia

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[Leticia]

Thank you for your response John!

I did what you said in bulk-send-application.h and bulk-send-
application.cc but then, how can I know in my script if the
application is finished? Must I change something in bulk-send-
helper.cc or bulk-send-helper.h?
My question is because I need the time when the bulk application has
finished to start another application after that!!

Thank you very much for your help!

Leticia


In my script I have a scenario of LTE and a server sending files to
the User Equipment.

[John Abraham]

John-Abrahams-MacBook-Pro:ns-3-dev john$ hg diff

diff -r a55aa66b5132 examples/tcp/tcp-bulk-send.cc

--- a/examples/tcp/tcp-bulk-send.cc Mon Jun 18 06:35:32 2012 -0700

+++ b/examples/tcp/tcp-bulk-send.cc Sat Jun 23 13:29:27 2012 -0700

@@ -37,6 +37,12 @@

 

 NS_LOG_COMPONENT_DEFINE ("TcpBulkSendExample");

 

+

+void maxBytesSent (uint32_t maxBytes)

+{

+   NS_LOG_UNCOND (maxBytes << " Sent  , Time :" << Simulator::Now ().GetSeconds ()); 

+}

+

 int

 main (int argc, char *argv[])

 {

@@ -111,7 +117,7 @@

   ApplicationContainer sinkApps = sink.Install (nodes.Get (1));

   sinkApps.Start (Seconds (0.0));

   sinkApps.Stop (Seconds (10.0));

-

+  sourceApps.Get (0)->TraceConnectWithoutContext ("MaxBytesSent", MakeCallback (maxBytesSent));

 //

 // Set up tracing if enabled

 //

diff -r a55aa66b5132 src/applications/model/bulk-send-application.cc

--- a/src/applications/model/bulk-send-application.cc Mon Jun 18 06:35:32 2012 -0700

+++ b/src/applications/model/bulk-send-application.cc Sat Jun 23 13:29:27 2012 -0700

@@ -65,6 +65,8 @@

                    MakeTypeIdChecker ())

     .AddTraceSource ("Tx", "A new packet is created and is sent",

                      MakeTraceSourceAccessor (&BulkSendApplication::m_txTrace))

+    .AddTraceSource ("MaxBytesSent", "MaxBytesSent sent",

+                     MakeTraceSourceAccessor (&BulkSendApplication::m_maxBytesSent))

   ;

   return tid;

 }

@@ -190,6 +192,7 @@

   // Check if time to close (all sent)

   if (m_totBytes == m_maxBytes && m_connected)

     {

+      m_maxBytesSent (m_maxBytes);

       m_socket->Close ();

       m_connected = false;

     }

diff -r a55aa66b5132 src/applications/model/bulk-send-application.h

--- a/src/applications/model/bulk-send-application.h Mon Jun 18 06:35:32 2012 -0700

+++ b/src/applications/model/bulk-send-application.h Sat Jun 23 13:29:27 2012 -0700

@@ -93,6 +93,7 @@

   uint32_t        m_totBytes;     // Total bytes sent so far

   TypeId          m_tid;

   TracedCallback<Ptr<const Packet> > m_txTrace;

+  TracedCallback<uint32_t> m_maxBytesSent;

 

 private:

   void ConnectionSucceeded (Ptr<Socket> socket);

John-Abrahams-MacBook-Pro:ns-3-dev john$ ./waf --run "tcp-bulk-send --maxBytes=100000"

Waf: Entering directory `/Users/john/ns-3/ns-3-allinone/ns-3-dev/build'

Waf: Leaving directory `/Users/john/ns-3/ns-3-allinone/ns-3-dev/build'

'build' finished successfully (4.348s)

100000 Sent  , Time :0.011344

Total Bytes Received: 100000

John-Abrahams-MacBook-Pro:ns-3-dev john$ 

[Leticia]

Sorry John but I dont understand.

I want to simulate web traffic so first of all I will send bytes for the "main object" through a bulk send application, when the application finishes of sending all the bytes, I must immediately start another bulk application with a different amount of bytes, so I must indicate the start time for the second application and it must be equal to the finish time of the previous application,  this is what I want to do.

THank you very much for your help!

Best regards

Leticia

[John Abraham]

Can't you schedule the second application when 

void maxBytesSent (uint32_t maxBytes)

+{

+   NS_LOG_UNCOND (maxBytes << " Sent  , Time :" << Simulator::Now ().GetSeconds ()); 

     ScheduleNextApp

+}

is called? It is called only once , after the first application completes sending maxBytes.

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[Leticia]

Thank you for your time John.

Im still not familiar with NS3, so I dont know what is NS_LOG_UNCOND for example. I will try to study about it and I will let you know if I have  more questions.

Thank you once again for your kind response.

Regards

Leticia

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[ekim6...@gmail.com]

Hi,
Can we use BulkSendApplication with IPv6?
Below program uses BulkSendApplication in IPv6 scenario. But it's not showing any transfer.
Could anyone help to find the problem in below program?

Thanks.

[Konstantinos]

Hi,

BulkSend application CAN work with IPv6, since it is not bound to any IP version.
BTW, the scenario you attached does not use BulkSend application.

[ekim6...@gmail.com]

Hi Konstantinos,

Thanks for the reply.
Sorry, I attached the original file by mistake.
Here is the modified one.
Still unable to resolve.

Thanks.

[Konstantinos]

And what makes you think that it is not working?

Have you looked at the generated trace files (ASCII traces and PCAP)?

Because I see both Tx and Rx packets.

If you are waiting to see them in the terminal, you need to enable the corresponding LogComponent for BulkSend and PacketSink applications instead of Ping.

[ekim6...@gmail.com]

Hi Konstantinos,

Attached are the traced files generated.
In case of ping6 application, fragmentation is done as it is required.
But while using BulkSendApplication there is no fragmentation and data transfer.
Why?


Thanks.

[Tommaso Pecorella]

From the screenshot you attached it seems that you didn't start the application, or that you messed up the subnets.

Attach the script you're trying to run. If it's a stupid error, be ready for a "honest" reply.

T.

[ekim6...@gmail.com]

Hi,
It may be stupid error but I am unable to trace.
Attached is the script I am trying to run.

Thanks.

[Tommaso Pecorella]

The source node is sending stuff it ITSELF.

 

  BulkSendHelper source ("ns3::TcpSocketFactory", Inet6SocketAddress (i1.GetAddress (0,1), port));

should be

   BulkSendHelper source ("ns3::TcpSocketFactory", Inet6SocketAddress (i2.GetAddress (1,1), port));

T.