7738341012
* Adding initial implementation of basic_encap example * Updated basic_encap example to count the number of valid packets * Updated basic_encap example to put encapsulation layer after Ethernet header. * Added solution file for basic_encap example * Changed the name of the basic_encap example to basic_tunnel and called the new header myTunnel. Also changed the myTunnel field names slightly.
46 lines
1.1 KiB
Python
Executable File
46 lines
1.1 KiB
Python
Executable File
#!/usr/bin/env python
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import argparse
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import sys
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import socket
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import random
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import struct
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from scapy.all import sendp, send, get_if_list, get_if_hwaddr, hexdump
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from scapy.all import Packet
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from scapy.all import Ether, IP, UDP, TCP
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from myTunnel_header import MyTunnel
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def get_if():
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ifs=get_if_list()
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iface=None # "h1-eth0"
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for i in get_if_list():
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if "eth0" in i:
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iface=i
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break;
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if not iface:
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print "Cannot find eth0 interface"
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exit(1)
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return iface
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def main():
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if len(sys.argv)<4:
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print 'pass 2 arguments: <ip_addr> <dst_nid> "<message>"'
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exit(1)
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addr = socket.gethostbyname(sys.argv[1])
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dst_id = int(sys.argv[2])
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iface = get_if()
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print "sending on interface %s to id %s" % (iface, str(dst_id))
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pkt = Ether(src=get_if_hwaddr(iface), dst='ff:ff:ff:ff:ff:ff')
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pkt = pkt / MyTunnel(dst_id=dst_id) / IP(dst=addr) / sys.argv[3]
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pkt.show2()
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# hexdump(pkt)
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# print "len(pkt) = ", len(pkt)
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sendp(pkt, iface=iface, verbose=False)
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if __name__ == '__main__':
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main()
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