Re: [ns] new multicast packet header

[Haobo Yu <haoboy@isi.edu>]

you need to give them initial value in ns-default.tcl. 

- Haobo

On Mon, 6 Mar 2000, Lori Flynn wrote:

> Hi all,
> 
> I am creating 1)a  new mcast packet header and 2) a new agent to deal with
> receiving and sending these packets with the new headers.  I have followed
> the Marc Greis example in order to make this work.  (section 7 of the
> tutorial)
> 
> However, when I try to run a script which creates the new agent, I get
> this error:  
> warning: no class variable Agent/Mcast/Control::packetSize_
>         see tcl-object.tcl in tclcl for info about this warning.
> warning: no class variable Agent/Alert::off_ping_
>         see tcl-object.tcl in tclcl for info about this warning.
> 
> 
> Looking at 'tcl-object.tcl', it says that the Otcl/C++ link didn't work
> because there was no variable declared.  However, following the Greis
> example, packetSize_ is not explicitly 'declared', other than defining the
> size in the ns-default.tcl file and binding it to size_ in the ping.cc
> file.  'off_ping_' is declared in ping.h, then bound in ping.cc and
> mentioned in ns-packet.tcl.  
> 
> Do I need to do more for ns2 to see my variables?
> 
> Thanks,
> -Lori
> 
>