2 # Copyright (c) 2016 Cisco and/or its affiliates.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at:
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 """Traffic script that sends an TCP or UDP packet
16 from one interface to the other.
22 from scapy.layers.inet import IP, UDP, TCP
23 from scapy.layers.inet6 import IPv6
24 from scapy.all import Ether
26 from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
27 from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
31 """Check if IP address has the correct IPv4 address format.
33 :param ip: IP address.
35 :return: True in case of correct IPv4 address format,
36 otherwise return False.
40 ipaddress.IPv4Address(unicode(ip))
42 except (AttributeError, ipaddress.AddressValueError):
47 """Check if IP address has the correct IPv6 address format.
49 :param ip: IP address.
51 :return: True in case of correct IPv6 address format,
52 otherwise return False.
56 ipaddress.IPv6Address(unicode(ip))
58 except (AttributeError, ipaddress.AddressValueError):
63 """Send TCP or UDP packet from one traffic generator interface to the other.
65 args = TrafficScriptArg(
66 ['tx_mac', 'rx_mac', 'src_ip', 'dst_ip', 'protocol',
67 'source_port', 'destination_port'])
69 src_mac = args.get_arg('tx_mac')
70 dst_mac = args.get_arg('rx_mac')
71 src_ip = args.get_arg('src_ip')
72 dst_ip = args.get_arg('dst_ip')
73 tx_if = args.get_arg('tx_if')
74 rx_if = args.get_arg('rx_if')
76 protocol = args.get_arg('protocol')
77 source_port = args.get_arg('source_port')
78 destination_port = args.get_arg('destination_port')
81 if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
83 elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
86 ValueError("Invalid IP version!")
88 if protocol.upper() == 'TCP':
90 elif protocol.upper() == 'UDP':
93 raise ValueError("Invalid type of protocol!")
98 pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
99 ip_version(src=src_ip, dst=dst_ip) /
100 protocol(sport=int(source_port), dport=int(destination_port)))
106 raise RuntimeError("TCP/UDP Rx timeout")
109 print ("TCP packet received.")
112 print ("UDP packet received.")
114 raise RuntimeError("Not an TCP or UDP packet received {0}"
115 .format(ether.__repr__()))
120 if __name__ == "__main__":