[ns] cbr packet size

[Patrick Simen <psimen@eecs.umich.edu>]

Am I right in assuming that Application/Traffic/CBR agents have a packet
size of 1000, but that they actually carry no data?  I read in a message
to this list that cbr packets always have size = 1000, and from my
experiments, this seems to be true.  But the packet's datalen field is
always 0.

But I can't figure out what line of c++ code causes the packet size to be
set to 1000, even after looking through all the files I can think of.

I am trying to create a TCPSink object at a node which, whenever it
receives a TCP packet, will cause a UDP agent at that same node to
multicast a UDP packet (with the same data as received in the TCP
packet, if any) to multiple nodes downstream.  If anyone knows of previous
postings related to this, or can help me directly, or can just tell me
where cbr packet sizes are initialized, that would be great.  

Thanks. --Pat.

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Patrick Simen
psimen@eecs.umich.edu
EECS Dept.
University of Michigan
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