Re: [ns] about the header

[Vakul Goel <goelvakul@yahoo.com>]

Dear liu..

Following might work.. 

Insert a field for the time stamp in the header. Now while sending the
packet place the presnt time in the variable declared for time stamp..

Now at the destination, define another tepmerory variable, and put the
time in it..

So the time for which the packet will be in network will be 

Temp_Timestamp - timestamp

where timestamp is the field U will insert in the Header, and
Temp_Timestamp is the temperory timestamp field at the destination..

Thanks

Vakul
--- liu yong <engp1130@nus.edu.sg> wrote:
> Dear users,
>      My problem is how to insert the lifetime of one flow into the
> packet header.That is, when one packet comes, how can I know the
> lifetime of the flow which the packet belong to.When the agent is
> created,the flow lifetime and flow id will be assigned to the flow.In
> the IP header,there is one flow id field for flow id.So I can know
> the flow id of the packet. I have tried to insert the lifetime into
> the  IP packet header struct as the way the flowid is inserted into
> the IP header.However,I got Segmentation Fault.
> and some warning there is no Agent/SA::lifetime_ .Does anybody know
> how to solve this problem?Thanks. 
> 
> Best Regards,
>   liu yong
>   engp1130@nus.edu.sg
> 


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