| /* |
| * 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. |
| */ |
| package org.apache.sshd; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.time.Duration; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.sshd.client.SshClient; |
| import org.apache.sshd.client.channel.ClientChannel; |
| import org.apache.sshd.client.channel.ClientChannelEvent; |
| import org.apache.sshd.client.session.ClientSession; |
| import org.apache.sshd.common.channel.Channel; |
| import org.apache.sshd.common.channel.RequestHandler; |
| import org.apache.sshd.common.session.ConnectionService; |
| import org.apache.sshd.common.session.helpers.AbstractConnectionServiceRequestHandler; |
| import org.apache.sshd.common.util.buffer.Buffer; |
| import org.apache.sshd.core.CoreModuleProperties; |
| import org.apache.sshd.server.SshServer; |
| import org.apache.sshd.server.channel.ChannelSession; |
| import org.apache.sshd.server.command.Command; |
| import org.apache.sshd.util.test.BaseTestSupport; |
| import org.apache.sshd.util.test.CoreTestSupportUtils; |
| import org.apache.sshd.util.test.EchoShell; |
| import org.apache.sshd.util.test.EchoShellFactory; |
| import org.junit.After; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.FixMethodOrder; |
| import org.junit.Test; |
| import org.junit.runners.MethodSorters; |
| |
| /** |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| @FixMethodOrder(MethodSorters.NAME_ASCENDING) |
| public class KeepAliveTest extends BaseTestSupport { |
| |
| private static final Duration HEARTBEAT = Duration.ofSeconds(2L); |
| private static final Duration TIMEOUT = HEARTBEAT.multipliedBy(2L); |
| private static final Duration WAIT = TIMEOUT.multipliedBy(3L); |
| |
| private static SshServer sshd; |
| private static int port; |
| private static SshClient client; |
| |
| public KeepAliveTest() { |
| super(); |
| } |
| |
| @BeforeClass |
| public static void setupClientAndServer() throws Exception { |
| sshd = CoreTestSupportUtils.setupTestServer(KeepAliveTest.class); |
| sshd.setShellFactory(new TestEchoShellFactory()); |
| sshd.start(); |
| port = sshd.getPort(); |
| |
| client = CoreTestSupportUtils.setupTestClient(KeepAliveTest.class); |
| client.start(); |
| } |
| |
| @AfterClass |
| public static void tearDownClientAndServer() throws Exception { |
| if (sshd != null) { |
| try { |
| sshd.stop(true); |
| } finally { |
| sshd = null; |
| } |
| } |
| |
| if (client != null) { |
| try { |
| client.stop(); |
| } finally { |
| client = null; |
| } |
| } |
| } |
| |
| @Before |
| public void setUp() { |
| CoreModuleProperties.IDLE_TIMEOUT.set(sshd, TIMEOUT); |
| } |
| |
| @After |
| public void tearDown() { |
| // Restore default value |
| CoreModuleProperties.IDLE_TIMEOUT.remove(sshd); |
| CoreModuleProperties.HEARTBEAT_INTERVAL.remove(client); |
| CoreModuleProperties.HEARTBEAT_REPLY_WAIT.remove(client); |
| } |
| |
| @Test |
| public void testIdleClient() throws Exception { |
| try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port) |
| .verify(CONNECT_TIMEOUT) |
| .getSession()) { |
| session.addPasswordIdentity(getCurrentTestName()); |
| session.auth().verify(AUTH_TIMEOUT); |
| |
| try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) { |
| long waitStart = System.currentTimeMillis(); |
| Collection<ClientChannelEvent> result = channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT); |
| long waitEnd = System.currentTimeMillis(); |
| assertTrue("Wrong channel state after wait of " + (waitEnd - waitStart) + " ms: " + result, |
| result.containsAll(EnumSet.of(ClientChannelEvent.CLOSED))); |
| } |
| } |
| } |
| |
| @Test |
| public void testClientWithHeartBeat() throws Exception { |
| CoreModuleProperties.HEARTBEAT_INTERVAL.set(client, HEARTBEAT); |
| try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port) |
| .verify(CONNECT_TIMEOUT) |
| .getSession()) { |
| session.addPasswordIdentity(getCurrentTestName()); |
| session.auth().verify(AUTH_TIMEOUT); |
| |
| try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) { |
| long waitStart = System.currentTimeMillis(); |
| Collection<ClientChannelEvent> result = channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT); |
| long waitEnd = System.currentTimeMillis(); |
| assertTrue("Wrong channel state after wait of " + (waitEnd - waitStart) + " ms: " + result, |
| result.contains(ClientChannelEvent.TIMEOUT)); |
| } |
| } |
| } |
| |
| @Test |
| public void testShellClosedOnClientTimeout() throws Exception { |
| TestEchoShell.latch = new CountDownLatch(1); |
| |
| try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port) |
| .verify(CONNECT_TIMEOUT) |
| .getSession()) { |
| session.addPasswordIdentity(getCurrentTestName()); |
| session.auth().verify(AUTH_TIMEOUT); |
| |
| try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| ByteArrayOutputStream err = new ByteArrayOutputStream()) { |
| |
| channel.setOut(out); |
| channel.setErr(err); |
| channel.open().verify(OPEN_TIMEOUT); |
| |
| assertTrue("Latch time out", TestEchoShell.latch.await(DEFAULT_TIMEOUT.toMillis(), TimeUnit.MILLISECONDS)); |
| |
| long waitStart = System.currentTimeMillis(); |
| Collection<ClientChannelEvent> result = channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT); |
| long waitEnd = System.currentTimeMillis(); |
| assertTrue("Wrong channel state after wait of " + (waitEnd - waitStart) + " ms: " + result, |
| result.containsAll(EnumSet.of(ClientChannelEvent.CLOSED, ClientChannelEvent.OPENED))); |
| } |
| } finally { |
| TestEchoShell.latch = null; |
| } |
| } |
| |
| @Test // see SSHD-968 |
| public void testAllowUnimplementedMessageHeartbeatResponse() throws Exception { |
| List<RequestHandler<ConnectionService>> globalHandlers = sshd.getGlobalRequestHandlers(); |
| sshd.setGlobalRequestHandlers( |
| Collections.singletonList( |
| new AbstractConnectionServiceRequestHandler() { |
| @Override |
| public Result process( |
| ConnectionService connectionService, String request, |
| boolean wantReply, Buffer buffer) |
| throws Exception { |
| connectionService.process( |
| 255 /* trigger unimplemented command handler */, buffer); |
| return Result.Replied; |
| } |
| })); |
| CoreModuleProperties.HEARTBEAT_INTERVAL.set(client, HEARTBEAT); |
| CoreModuleProperties.HEARTBEAT_REPLY_WAIT.set(client, Duration.ofSeconds(5L)); |
| try (ClientSession session = client.connect(getCurrentTestName(), TEST_LOCALHOST, port) |
| .verify(7L, TimeUnit.SECONDS) |
| .getSession()) { |
| session.addPasswordIdentity(getCurrentTestName()); |
| session.auth().verify(5L, TimeUnit.SECONDS); |
| |
| try (ClientChannel channel = session.createChannel(Channel.CHANNEL_SHELL)) { |
| long waitStart = System.currentTimeMillis(); |
| Collection<ClientChannelEvent> result = channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED), WAIT); |
| long waitEnd = System.currentTimeMillis(); |
| assertTrue("Wrong channel state after wait of " + (waitEnd - waitStart) + " ms: " + result, |
| result.contains(ClientChannelEvent.TIMEOUT)); |
| } |
| } finally { |
| sshd.setGlobalRequestHandlers(globalHandlers); // restore original |
| } |
| } |
| |
| public static class TestEchoShellFactory extends EchoShellFactory { |
| public TestEchoShellFactory() { |
| super(); |
| } |
| |
| @Override |
| public Command createShell(ChannelSession channel) { |
| return new TestEchoShell(); |
| } |
| } |
| |
| public static class TestEchoShell extends EchoShell { |
| // CHECKSTYLE:OFF |
| public static CountDownLatch latch; |
| // CHECKSTYLE:ON |
| |
| public TestEchoShell() { |
| super(); |
| } |
| |
| @Override |
| public void destroy(ChannelSession channel) throws Exception { |
| if (latch != null) { |
| latch.countDown(); |
| } |
| super.destroy(channel); |
| } |
| } |
| } |