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Fixes skupperproject#1145: Implement idle connection timeout for tcpL…
…istener
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you 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. | ||
| # | ||
|
|
||
| import socket | ||
|
|
||
| from system_test import Qdrouterd, TIMEOUT, TestCase, unittest | ||
| from system_test import main_module, retry_exception, retry | ||
|
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| class TcpAdaptorIdleTimeoutTest(TestCase): | ||
| """ | ||
| Test the TCP adaptor idle connection timeout functionality | ||
| """ | ||
| @classmethod | ||
| def setUpClass(cls): | ||
| # Create a single router with a tcpConnector and tcpListener. | ||
| # Configure a short idle timeout on the tcpListener | ||
| super(TcpAdaptorIdleTimeoutTest, cls).setUpClass() | ||
|
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| cls.idle_timeout = 5 | ||
| cls.service_addr = "idle/timeout" | ||
| cls.listener_port = cls.tester.get_port() | ||
| cls.connector_port = cls.tester.get_port() | ||
| config = [ | ||
| ('router', {'mode': 'interior', 'id': 'TcpIdleTimeout'}), | ||
| ('listener', {'role': 'normal', | ||
| 'port': cls.tester.get_port()}), | ||
| ('tcpListener', {'port': cls.listener_port, | ||
| 'address': cls.service_addr, | ||
| 'idleTimeoutSeconds': cls.idle_timeout}), | ||
| ('tcpConnector', {'host': '127.0.0.1', | ||
| 'port': cls.connector_port, | ||
| 'address': cls.service_addr}), | ||
| ('address', {'prefix': 'closest', 'distribution': 'closest'}), | ||
| ('address', {'prefix': 'multicast', 'distribution': 'multicast'}), | ||
| ] | ||
|
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| config = Qdrouterd.Config(config) | ||
|
|
||
| cls.router = cls.tester.qdrouterd('TcpIdleTimeout', | ||
| Qdrouterd.Config(config), | ||
| wait=False) | ||
| cls.router.wait_startup_message() | ||
|
|
||
| def _get_tcp_conn_count(self): | ||
| """ | ||
| Return the number of currently active TCP connections | ||
| """ | ||
| CONNECTION_TYPE = 'io.skupper.router.connection' | ||
| mgmt = self.router.management | ||
| conns = mgmt.query(type=CONNECTION_TYPE, attribute_names=['protocol', | ||
| 'container', | ||
| 'host']).get_dicts() | ||
| results = [c for c in filter(lambda c: | ||
| c['protocol'] == 'tcp' and | ||
| c['container'] == 'TcpAdaptor' and | ||
| c['host'] != 'egress-dispatch', conns)] | ||
| return len(results) | ||
|
|
||
| def _is_socket_closed(self, sock): | ||
| sock.settimeout(TIMEOUT) | ||
| try: | ||
| data = sock.recv(4096) | ||
| if data == b'': | ||
| return True | ||
| except Exception as exc: | ||
| print(f"Socket Recv Failed! Error={exc}", flush=True) | ||
| return False | ||
|
|
||
| def test_01_detect_idle_conn(self): | ||
| """ | ||
| Connect a client and server that do not transfer any data. Wait for the | ||
| idle timeout to expire and verify the TCP connections have been | ||
| force-closed by the router. | ||
| """ | ||
|
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| # create the server listening socket | ||
| with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as listener: | ||
| listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) | ||
| listener.bind(("", self.connector_port)) | ||
| listener.settimeout(TIMEOUT) | ||
| listener.listen(1) | ||
|
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||
| with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as client: | ||
| retry_exception(lambda cs=client: | ||
| cs.connect(("localhost", | ||
| self.listener_port)), | ||
| delay=0.25, | ||
| exception=ConnectionRefusedError) | ||
| client.settimeout(TIMEOUT) | ||
|
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||
| # accept the client connection | ||
| server, _ = listener.accept() | ||
| try: | ||
| # Ensure both conns are established | ||
| self.assertTrue(retry(lambda: self._get_tcp_conn_count() == 2)) | ||
|
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| # Now wait until both conns are torn down | ||
| self.assertTrue(retry(lambda: self._get_tcp_conn_count() == 0)) | ||
|
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| # verify that the client and server sockets are closed | ||
| self.assertTrue(retry(lambda sock=client: | ||
| self._is_socket_closed(sock))) | ||
| self.assertTrue(retry(lambda sock=server: | ||
| self._is_socket_closed(sock))) | ||
| finally: | ||
| server.close() | ||
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| if __name__ == '__main__': | ||
| unittest.main(main_module()) |