Questions!

[K Sun <ksun@essex.ac.uk>]

Hello,
    I am sorry for my questions. Although I have not completed ns Notes 
and Documentation, I can not help asking some questions.
    I have read some parts of the documentation above, but I could not 
understand where "target_" has been set. I find in some ns program, it 
is not needed to specially set target_.  I do not know "target_" 
expresses the next hop node or the final destination. From some 
programs, I feel it should mean the next hop node. 
However, in page 57, "$newtcp target $dest" implies it should be the 
final destination.
    
    Additionally, I try to install RSVP/ns. When I re-compiling ns, 
there is such error information below:
...
rsvp-link.cc:71: call of overloaded `recv(Packet *&, int)' is ambiguous
object.h:51: candidates are: NsObject::recv(Packet *, const char *)
object.h:48:                 NsObject::recv(Packet *, Handler *)
..

The line 71 is: "target_->recv(p, 0);"
I do not know what is wrong with it. It should call 
" NsObject::recv(Packet *, Handler *)".
 
So, what is wrong with line 71?

Thanks anyway!

Sun Kai