utils.tcl

# Copyright (C) 2001-2006  Sergio Andreozzi
#
# This file is part of DiffServ4NS, a set of improvements to
# the Network Simulator 2 for DiffServ simulations.
#
# Project page: http://diffserv4ns.sourceforge.net/
#
# DiffServ4NS is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# DiffServ4NS is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with DiffServ4NS; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
# GNU License: http://www.gnu.org/licenses/gpl.txt

#  SourceId     : source agent index
#  SinkId       : sink   agent index
#  src          : source node
#  dst          : destination node
#  flowId       : flow Id used by LossMonitor to compute parameters as OWD and IPDV
#  PacketSize   : UDP packet size  (in bytes)
#  Rate         : 
#  Start        :
#  Stop         :

proc cbr_connection {SourceId SinkId src dst flowId PacketSize Rate start stop} {
        global ns Sink_
        set udp_($SourceId) [new Agent/UDP]
        $udp_($SourceId)    set class_ $flowId
        $ns attach-agent $src $udp_($SourceId)
        set cbr_($SourceId) [new Application/Traffic/CBR]
        $cbr_($SourceId)    attach-agent $udp_($SourceId)
        $cbr_($SourceId)    set packet_size_ $PacketSize
        $udp_($SourceId)    set packetSize_  $PacketSize
        $cbr_($SourceId)    set rate_ $Rate

        if {($flowId == 1)} {
                set Sink_($SinkId) [new Agent/LossMonitor]
                $Sink_($SinkId) set flowid_ $flowId
        } else {
                set Sink_($SinkId) [new Agent/Null]
        }

        $ns attach-agent $dst  $Sink_($SinkId)
        $ns connect $udp_($SourceId) $Sink_($SinkId)
        $ns at $start "$cbr_($SourceId) start"
        $ns at $stop  "$cbr_($SourceId) stop"
}


proc telnet_connection {id src dst inter start} {
    global ns
    set tcp_($id) [new Agent/TCP]
    $tcp_($id) set class_ 2
#    $tcp_($id) set packetSize_ 1500
    set sink_($id) [new Agent/TCPSink]
    $ns attach-agent $src $tcp_($id)
    $ns attach-agent $dst $sink_($id)

    set telnet_($id) [new Application/Telnet]  
    $telnet_($id) attach-agent $tcp_($id)
    $telnet_($id) set interval $inter

    $ns connect $tcp_($id) $sink_($id)

    $ns at $start "$telnet_($id) start"
   
}

proc ftp_connection {id src dst start} {
    global ns
    set tcp_($id) [new Agent/TCP]
    $tcp_($id) set class_ 2
#    $tcp_($id) set packetSize_ 1500
    $ns attach-agent $src $tcp_($id)
    set ftp_($id) [new Application/FTP]
    $ftp_($id) attach-agent $tcp_($id)

    set sink_($id) [new Agent/TCPSink]
    $ns attach-agent $dst $sink_($id)

    $ns connect $tcp_($id) $sink_($id)
    $ns at $start "$ftp_($id) start"
    
}