[ns] ns -2 dsdv aodv research

[wjw7869]

 
 
Hi all,
   I am reaching source code of  ~ns/ns-allinone-2.29/ns-2.29/dsdv,but I can 
not understand code ,please help me! thanks a lot ! 
 
Wjw  hefei china 







void 
DSDV_Agent::tracepkt (Packet * p, double now, int me, const char *type)
{
  char buf[1024];

  unsigned char *walk = p->accessdata ();

  int ct = *(walk++);
  int seq, dst, met;

  snprintf (buf, 1024, "V%s %.5f _%d_ [%d]:", type, now, me, ct);
  while (ct--)
    {
      dst = *(walk++);
      dst = dst << 8 | *(walk++);
      dst = dst << 8 | *(walk++);
      dst = dst << 8 | *(walk++);
      met = *(walk++);
      seq = *(walk++);
      seq = seq << 8 | *(walk++);
      seq = seq << 8 | *(walk++);
      seq = seq << 8 | *(walk++);
      snprintf (buf, 1024, "%s (%d,%d,%d)", buf, dst, met, seq);
    }
  // Now do trigger handling.
  //trace("VTU %.5f %d", now, me);
  if (verbose_)
    trace ("%s", buf);
}