Hi,

I want to access congestion window for TCP traffic in my tcl script for 
wireless medium. I tried to access through following code:   fw is file 
pointer

proc record {} {
global ns fw
set time 0.3
set now [$ns now]
set ww cwnd_
puts $fw "$ww"
$ns at [expr $time + $now] "record"
}

This code is not giving cwnd parameter. Could you please pont out where 
is the mistake.
Also where can i read about parameters  which are accessable in tcl 
script for wireless medium. Can i very these parameters dynamically?

Thanks in advance.
Dharmendra

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