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# Copyright 2007, Old Dominion University
# Copyright 2007, University of North Carolina at Chapel Hill
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Contact: Michele Weigle (mweigle@cs.odu.edu)
#
# ONE-WAY TCP FUNCTIONS
#
# one-way TCP agent allocation
Tmix instproc alloc-agent {tcptype} {
if {$tcptype != "Tahoe"} {
return [new Agent/TCP/$tcptype]
} else {
# Tahoe is the default in one-way TCP
return [new Agent/TCP]
}
}
# one-way TCP sink allocation
Tmix instproc alloc-sink {sinktype} {
if {$sinktype != "default"} {
return [new Agent/TCPSink/$sinktype]
} else {
return [new Agent/TCPSink]
}
}
Tmix instproc configure-sink {sink} {
$sink set packetSize_ 40
}
Tmix instproc configure-source {agent fid wnd mss} {
# set flow ID, max window, and packet size
$agent set fid_ $fid
$agent set window_ $wnd
$agent set packetSize_ $mss
}
#
# FULL TCP FUNCTIONS
#
# Full TCP agent allocation
Tmix instproc alloc-tcp {tcptype} {
if {$tcptype != "Reno"} {
return [new Agent/TCP/FullTcp/$tcptype]
} else {
# Reno is the default in Full-TCP
return [new Agent/TCP/FullTcp]
}
}
Tmix instproc setup-tcp {tcp fid wnd mss} {
# set flow ID and max window
$tcp set fid_ $fid
$tcp set window_ $wnd
$tcp set segsize_ $mss
# register done procedure for when connection is closed
$tcp proc done {} "$self done $tcp"
}
#
# HELPER FUNCTIONS
#
# This is here so that we can attach the apps to a node
Tmix instproc alloc-app {} {
return [new Application/Tmix]
}
Tmix instproc done {tcp} {
# the connection is done, so recycle the agent
$self recycle $tcp
}
Tmix instproc now {} {
set ns [Simulator instance]
return [format "%.6f" [$ns now]]
}
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