-# Copyright (c) 2020 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:
+# Copyright (c) 2021 Cisco and/or its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# Licensed under the Apache License 2.0 or
+# GNU General Public License v2.0 or later; you may not use this file
+# except in compliance with one of these Licenses. You
+# may obtain a copy of the Licenses at:
#
# http://www.apache.org/licenses/LICENSE-2.0
+# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
+#
+# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
+# must be under GPLv2+. If at any point in the future it is no longer linked
+# with Scapy (or other GPLv2+ licensed software), you are free to choose
+# Apache 2.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
on port 1
- Destination IP address range: source IP address from packet received
on port 1
+
+This is a profile for CPS tests, it only sets up UDP session.
+No delays, no data transfer.
+Keepalive mechanism cannot be disabled, so it is at least set to long waits.
"""
from trex.astf.api import *
# Headers length
self.headers_size = 42 # 14B l2 + 20B ipv4 + 8B udp
- # Required UDP keepalive value for T-Rex
- self.udp_keepalive = 2000 # 2s (2,000 msec)
+ # No need to set keepalive, both programs end just after start&send.
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
# client commands
prog_c = ASTFProgram(stream=False)
- # set the keepalive timer for UDP flows to not close udp session
- # immediately after packet exchange
- prog_c.set_keepalive_msg(self.udp_keepalive)
# send REQ message
prog_c.send_msg(self.udp_req)
- # receive RES message
- prog_c.recv_msg(1)
+ # No need to process the response, seeing L2 counter is enough.
+ # Client program can end here.
# server commands
prog_s = ASTFProgram(stream=False)
- # set the keepalive timer for UDP flows to not close udp session
- # immediately after packet exchange
- prog_c.set_keepalive_msg(self.udp_keepalive)
- # receive REQ message
- prog_s.recv_msg(1)
+ # When server instance is created means REQ is visible in L2 counter.
+ # No need to receive explicitly?
# send RES message
prog_s.send_msg(self.udp_res)
+ # Server program can end here.
# ip generators
ip_gen_c = ASTFIPGenDist(