Access custom application functions directly

[Muhammad Sabet]

Hi there,

I have defined some custom applications with some additional custom functions. I need to access those functions. It seems this cannot be achieved via Helpers. How can I call them from outside of the application(e.g. from another application)?

I have tried downcasting, didn't get what I wanted.

Thanks,

Sabet

[Muhammad Sabet]

I should mention that I have installed the application using associated helper. And by functions, I mean public ones.

[Tommaso Pecorella]

Hi,

how could we help you with your custom applications, helpers and functions ?

I could tell you what I'd do with a normal application and its helper, but it would be most probably a bad idea, since it could not work at all with your code.

As a matter of fact, how could I be sure that you followed the ns-3 coding scheme ?

Summarizing, only the developer can answer the questions about his/her custom code. In this case: yourself.

T.

[Muhammad Sabet]

Tommaso,

Thanks.
I have simple application class inherited from Application class which has

static TypeId GetTypeId (void)

 with addition to some other functions like StartApplication, StopApplication, SendPacket and some others.
Normally I use helpers to set attribs and install application on a node. And now I need to call member functions of the application from outside e.g. from another application class or from scenario directly. As far as I've tried I cannot call for example SendPacket using app helper.
I don't know if my explanation suffices for you, but for the sake of simplicity take:
https://github.com/nsnam/ns-3-dev-git/blob/master/src/applications/model/bulk-send-application.h
for instance. How can I call GetSocket from outside of the class? If I have an instance of this application installed on a node by associated helper, how can I call the object's public member functions?

Thanks,
Sabet

[Muhammad Hosain Abdollahi Sabet]

Or to put it -as plainly as I can- into words:

How can I have a pointer to an object of BulkSendApplication class, so to be able to call it's member functions?

خندان باشید

با تشکر

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[Konstantinos]

From the pointer to a node, you can get the pointer to the Application with "GetApplication()"

https://www.nsnam.org/docs/doxygen/classns3_1_1_node.html#ad0ab54d76712398c0a8e25d9ac59ea41

Then using down casting (DynamicCast method in ns-3) you can convert that "Application" to BulkSendApplication" or your custom.

See examples in /wireless/ht-wifi-network.cc (https://www.nsnam.org/docs/doxygen/ht-wifi-network_8cc_source.html) how the UdpServer application is accessed.

Regards

K. 

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[Muhammad Hosain Abdollahi Sabet]

Konstantinos,
Thank you so much. I will try it for sure.

I did see the example. Why did it use PacketSink for DynamicCast?

Thanks,

Sabet

خندان باشید

با تشکر

K. 

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[Konstantinos]

Study the example and you should be able to figure it out.

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با تشکر

K. 

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