[ns] Questions about TCP

["Nikolaos Katsarakis Austauschstud. (M. Schweigel)" <katsarak@ifn.et.tu-dresden.de>]

Dear ns-users

I have been using a TCP/Reno agent in my simulations in ns2.1b7a.

In the done() callback, I reset the TCP source and sink. But then the
next packet sent by the TCP Agent is marked in the ns trace file with
the flags ---A---, meaning it is a retransmission, while it is the first
packet of the new data to be sent. Shouldn't it just be normally marked
like ------- ?

Second, is there any way to get the current size of congestion window? I
know I can trace it in a separate file, but I need it during the
simulation, in order to set the initial window of an agent to this value
after reset. In case you are wondering why I am doing the reset, it is
only in order for the done() callback to be activated again. Is there
maybe a better way to re-enable the calling of done() ?

Thank you very much

Nikos