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85 lines
2.3 KiB
Python
85 lines
2.3 KiB
Python
from mininet.net import Mininet
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from mininet.node import Controller
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from mininet.log import setLogLevel
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from mininet.cli import CLI
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from pox.lib import of
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import time
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import matplotlib.pyplot as plt
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# Create empty lists to store the timestamp and latency values
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timestamps = []
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latencies = []
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class PacketCopyController(Controller):
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def __init__(self, name, target_host, **kwargs):
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Controller.__init__(self, name, **kwargs)
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self.target_host = target_host
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def _handle_PacketIn(self, event):
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packet = event.parsed
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self.packet_out(event.port, packet)
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self.packet_out_to_host(packet)
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# Measure latency and store timestamp and latency values
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latency = time.time() - event.created
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timestamps.append(time.time())
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latencies.append(latency)
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def packet_out(self, out_port, packet):
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msg = of.ofp_packet_out()
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msg.data = packet.pack()
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action = of.ofp_action_output(port=out_port)
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msg.actions.append(action)
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self.connection.send(msg)
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def packet_out_to_host(self, packet):
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host = self.net.get(self.target_host)
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if host:
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host.sendMsg(packet)
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if __name__ == '__main__':
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setLogLevel('info')
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# Creazione della rete Mininet
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net = Mininet(controller=PacketCopyController)
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# Creazione degli host e degli switch
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h1 = net.addHost('h1')
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h2 = net.addHost('h2')
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h3 = net.addHost('h3')
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s1 = net.addSwitch('s1')
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# Creazione dei collegamenti
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net.addLink(h1, s1)
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net.addLink(h2, s1)
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net.addLink(h3, s1)
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# Create the plot
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plt.figure()
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plt.xlabel('Time')
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plt.ylabel('Latency (seconds)')
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plt.title('Network Latency')
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# Avvio della rete e assegnazione del controller
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# Add the POX controller
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controller = net.addController(name='controller', target_host='h3', controller=PacketCopyController, ip='127.0.0.1', port=6633)
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net.start()
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controller.start()
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# controller = net.controllers[0]
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# controller.net = net
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# Start the plot animation
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plt.ion()
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plt.show()
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try:
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while True:
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# Update the plot with new latency data
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plt.plot(timestamps, latencies, 'b-')
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plt.draw()
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plt.pause(0.1)
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except KeyboardInterrupt:
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pass
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CLI(net)
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net.stop()
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