#!/usr/bin/python

# Copyright 2013-present Barefoot Networks, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from scapy.all import Ether, IP, sendp

import networkx as nx

import sys

def read_topo():
    nb_hosts = 0
    nb_switches = 0
    links = []
    with open("topo.txt", "r") as f:
        line = f.readline()[:-1]
        w, nb_switches = line.split()
        assert(w == "switches")
        line = f.readline()[:-1]
        w, nb_hosts = line.split()
        assert(w == "hosts")
        for line in f:
            if not f: break
            a, b = line.split()
            links.append( (a, b) )
    return int(nb_hosts), int(nb_switches), links

def main():
    for i in range(1):
        p = Ether(dst="00:00:00:00:00:02")/IP(dst="10.0.0.2")
        print p.show()
        sendp(p, iface = "eth0")

if __name__ == '__main__':
    main()