On Mon, Oct 18, 2010 at 10:15 AM, Urs Hunkeler <urs.hunke...@epfl.ch> wrote:
....
> On the relay nodes you just need to increment the hop count for each
> message. You can intercept messages before they are forwarded. To do
> this you'll have to implement the Intercept interface. The code could
> look something likes this:
>
> event bool forward(message_t* msg, void* payload, uint8_t len) {
> MyMsg* data = (MyMsg*)payload; // cast to your own data structure
> data->hopCount++; // increase the hop count of the message
> return true; // tell the underlying system to forward the message
> }
If you use CTP, you can read the value of the THL field for hopcount.
- om_p
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