1 files changed, 121 insertions, 0 deletions
diff --git a/resources/traffic_scripts/send_tcp_udp.py b/resources/traffic_scripts/send_tcp_udp.py
new file mode 100755
index 0000000000..77f918213f
--- /dev/null
+++ b/resources/traffic_scripts/send_tcp_udp.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+"""Traffic script that sends an TCP or UDP packet
+from one interface to the other.
+"""
+
+import sys
+import ipaddress
+
+from scapy.layers.inet import IP, UDP, TCP
+from scapy.layers.inet6 import IPv6
+from scapy.all import Ether
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def valid_ipv4(ip):
+    """Check if IP address has the correct IPv4 address format.
+
+    :param ip: IP address.
+    :type ip: str
+    :return: True in case of correct IPv4 address format,
+             otherwise return False.
+    :rtype: bool
+    """
+    try:
+        ipaddress.IPv4Address(unicode(ip))
+        return True
+    except (AttributeError, ipaddress.AddressValueError):
+        return False
+
+
+def valid_ipv6(ip):
+    """Check if IP address has the correct IPv6 address format.
+
+    :param ip: IP address.
+    :type ip: str
+    :return: True in case of correct IPv6 address format,
+             otherwise return False.
+    :rtype: bool
+    """
+    try:
+        ipaddress.IPv6Address(unicode(ip))
+        return True
+    except (AttributeError, ipaddress.AddressValueError):
+        return False
+
+
+def main():
+    """Send TCP or UDP packet from one traffic generator interface to the other.
+    """
+    args = TrafficScriptArg(
+        ['tx_mac', 'rx_mac', 'src_ip', 'dst_ip', 'protocol',
+         'source_port', 'destination_port'])
+
+    src_mac = args.get_arg('tx_mac')
+    dst_mac = args.get_arg('rx_mac')
+    src_ip = args.get_arg('src_ip')
+    dst_ip = args.get_arg('dst_ip')
+    tx_if = args.get_arg('tx_if')
+    rx_if = args.get_arg('rx_if')
+
+    protocol = args.get_arg('protocol')
+    source_port = args.get_arg('source_port')
+    destination_port = args.get_arg('destination_port')
+
+    ip_version = None
+    if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
+        ip_version = IP
+    elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
+        ip_version = IPv6
+    else:
+        ValueError("Invalid IP version!")
+
+    if protocol.upper() == 'TCP':
+        protocol = TCP
+    elif protocol.upper() == 'UDP':
+        protocol = UDP
+    else:
+        raise ValueError("Invalid type of protocol!")
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
+               ip_version(src=src_ip, dst=dst_ip) /
+               protocol(sport=int(source_port), dport=int(destination_port)))
+
+    txq.send(pkt_raw)
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError("TCP/UDP Rx timeout")
+
+    if 'TCP' in ether:
+        print ("TCP packet received.")
+
+    elif 'UDP' in ether:
+        print ("UDP packet received.")
+    else:
+        raise RuntimeError("Not an TCP or UDP packet received {0}"
+                           .format(ether.__repr__()))
+
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()