706 lines
22 KiB
Java
706 lines
22 KiB
Java
/*
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* Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8221481 8358496
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* @library /test/lib
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* @build jdk.test.lib.Utils
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* @run junit/othervm/timeout=180 Timeouts
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* @summary Test Socket timeouts
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*/
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.ConnectException;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.net.SocketAddress;
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import java.net.SocketException;
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import java.net.SocketTimeoutException;
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import java.util.ArrayList;
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import java.util.concurrent.Callable;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.ForkJoinPool;
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import java.util.concurrent.Future;
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import java.util.concurrent.TimeUnit;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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import static org.junit.jupiter.api.Assumptions.*;
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import jdk.test.lib.Utils;
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class Timeouts {
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/**
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* Test timed connect where connection is established.
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*/
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@Test
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void testTimedConnect1() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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try (Socket s = new Socket()) {
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s.connect(ss.getLocalSocketAddress(), 2000);
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}
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}
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}
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/**
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* Test timed connect where connection is refused.
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*/
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@Test
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void testTimedConnect2() throws IOException {
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try (Socket s = new Socket()) {
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SocketAddress remote = Utils.refusingEndpoint();
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assertThrows(ConnectException.class, () -> s.connect(remote, 10000));
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}
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}
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/**
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* Test connect with a timeout of Integer.MAX_VALUE.
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*/
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@Test
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void testTimedConnect3() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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try (Socket s = new Socket()) {
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s.connect(ss.getLocalSocketAddress(), Integer.MAX_VALUE);
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}
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}
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}
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/**
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* Test connect with a negative timeout.
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*/
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@Test
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void testTimedConnect4() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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try (Socket s = new Socket()) {
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assertThrows(IllegalArgumentException.class,
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() -> s.connect(ss.getLocalSocketAddress(), -1));
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}
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}
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}
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/**
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* Test timed read where the read succeeds immediately.
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*/
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@Test
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void testTimedRead1() throws IOException {
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withConnection((s1, s2) -> {
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s1.getOutputStream().write(99);
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s2.setSoTimeout(30*1000);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test timed read where the read succeeds after a delay.
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*/
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@Test
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void testTimedRead2() throws IOException {
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withConnection((s1, s2) -> {
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scheduleWrite(s1.getOutputStream(), 99, 2000);
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s2.setSoTimeout(30*1000);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test timed read where the read times out.
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*/
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@Test
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void testTimedRead3() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(2000);
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long startMillis = millisTime();
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assertThrows(SocketTimeoutException.class, () -> s2.getInputStream().read());
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int timeout = s2.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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});
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}
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/**
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* Test timed read that succeeds after a previous read has timed out.
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*/
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@Test
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void testTimedRead4() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(2000);
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assertThrows(SocketTimeoutException.class, () -> s2.getInputStream().read());
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s1.getOutputStream().write(99);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test timed read that succeeds after a previous read has timed out and
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* after a short delay.
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*/
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@Test
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void testTimedRead5() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(2000);
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assertThrows(SocketTimeoutException.class, () -> s2.getInputStream().read());
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s2.setSoTimeout(30*3000);
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scheduleWrite(s1.getOutputStream(), 99, 2000);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test untimed read that succeeds after a previous read has timed out.
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*/
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@Test
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void testTimedRead6() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(2000);
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assertThrows(SocketTimeoutException.class, () -> s2.getInputStream().read());
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s1.getOutputStream().write(99);
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s2.setSoTimeout(0);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test untimed read that succeeds after a previous read has timed out and
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* after a short delay.
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*/
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@Test
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void testTimedRead7() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(2000);
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assertThrows(SocketTimeoutException.class, () -> s2.getInputStream().read());
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scheduleWrite(s1.getOutputStream(), 99, 2000);
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s2.setSoTimeout(0);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test async close of timed read.
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*/
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@Test
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void testTimedRead8() throws IOException {
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withConnection((s1, s2) -> {
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s2.setSoTimeout(30*1000);
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scheduleClose(s2, 2000);
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assertThrows(SocketException.class, () -> s2.getInputStream().read());
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});
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}
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/**
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* Test read with a timeout of Integer.MAX_VALUE.
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*/
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@Test
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void testTimedRead9() throws IOException {
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withConnection((s1, s2) -> {
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scheduleWrite(s1.getOutputStream(), 99, 2000);
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s2.setSoTimeout(Integer.MAX_VALUE);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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});
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}
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/**
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* Test 100 threads concurrently reading the same Socket with a timeout of 2s.
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* Each read should throw SocketTimeoutException after 2s, not 2s for the first,
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* 4s for the second, 6s for the third, up to 200s for the last thread.
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*/
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@Test
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void testTimedRead10() throws Exception {
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var futures = new ArrayList<Future<?>>();
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withConnection((_, s) -> {
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s.setSoTimeout(2000);
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Callable<?> timedReadTask = () -> {
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long startMillis = millisTime();
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assertThrows(SocketTimeoutException.class,
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() -> s.getInputStream().read());
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int timeout = s.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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return null;
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};
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// start 100 virtual threads to read from the socket
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try (var executor = Executors.newVirtualThreadPerTaskExecutor()) {
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for (int i = 0; i < 100; i++) {
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Future<?> future = executor.submit(timedReadTask);
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futures.add(future);
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}
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}
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});
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for (Future<?> future : futures) {
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future.get();
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}
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}
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/**
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* Test writing after a timed read.
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*/
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@Test
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void testTimedWrite1() throws IOException {
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withConnection((s1, s2) -> {
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s1.getOutputStream().write(99);
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s2.setSoTimeout(3000);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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// schedule thread to read s1 to EOF
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scheduleReadToEOF(s1.getInputStream(), 3000);
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// write a lot so that write blocks
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byte[] data = new byte[128*1024];
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for (int i = 0; i < 100; i++) {
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s2.getOutputStream().write(data);
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}
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});
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}
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/**
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* Test async close of writer (after a timed read).
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*/
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@Test
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void testTimedWrite2() throws IOException {
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withConnection((s1, s2) -> {
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s1.getOutputStream().write(99);
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s2.setSoTimeout(3000);
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int b = s2.getInputStream().read();
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assertEquals(99, b);
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// schedule s2 to be closed
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scheduleClose(s2, 3000);
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// write a lot so that write blocks
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byte[] data = new byte[128*1024];
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try {
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while (true) {
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s2.getOutputStream().write(data);
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}
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} catch (SocketException expected) { }
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});
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}
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/**
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* Test timed accept where a connection is established immediately.
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*/
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@Test
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void testTimedAccept1() throws IOException {
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Socket s1 = null;
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Socket s2 = null;
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try (ServerSocket ss = boundServerSocket()) {
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s1 = new Socket();
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s1.connect(ss.getLocalSocketAddress());
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ss.setSoTimeout(30*1000);
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s2 = ss.accept();
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} finally {
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if (s1 != null) s1.close();
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if (s2 != null) s2.close();
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}
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}
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/**
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* Test timed accept where a connection is established after a short delay.
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*/
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@Test
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void testTimedAccept2() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(30*1000);
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scheduleConnect(ss.getLocalSocketAddress(), 2000);
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Socket s = ss.accept();
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s.close();
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}
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}
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/**
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* Test timed accept where the accept times out
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*/
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@Test
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void testTimedAccept3() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(2000);
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long startMillis = millisTime();
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try {
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Socket s = ss.accept();
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s.close();
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fail();
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} catch (SocketTimeoutException expected) {
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int timeout = ss.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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}
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}
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}
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/**
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* Test timed accept where a connection is established immediately after a
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* previous accept timed out.
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*/
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@Test
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void testTimedAccept4() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(2000);
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try {
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Socket s = ss.accept();
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s.close();
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fail();
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} catch (SocketTimeoutException expected) { }
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try (Socket s1 = new Socket()) {
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s1.connect(ss.getLocalSocketAddress());
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Socket s2 = ss.accept();
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s2.close();
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}
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}
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}
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/**
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* Test untimed accept where a connection is established after a previous
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* accept timed out.
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*/
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@Test
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void testTimedAccept5() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(2000);
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try {
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Socket s = ss.accept();
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s.close();
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fail();
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} catch (SocketTimeoutException expected) { }
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ss.setSoTimeout(0);
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try (Socket s1 = new Socket()) {
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s1.connect(ss.getLocalSocketAddress());
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Socket s2 = ss.accept();
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s2.close();
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}
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}
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}
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/**
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* Test untimed accept where a connection is established after a previous
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* accept timed out and after a short delay.
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*/
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@Test
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void testTimedAccept6() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(2000);
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try {
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Socket s = ss.accept();
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s.close();
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fail();
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} catch (SocketTimeoutException expected) { }
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ss.setSoTimeout(0);
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scheduleConnect(ss.getLocalSocketAddress(), 2000);
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Socket s = ss.accept();
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s.close();
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}
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}
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/**
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* Test async close of a timed accept.
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*/
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@Test
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void testTimedAccept7() throws IOException {
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(30*1000);
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long delay = 2000;
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scheduleClose(ss, delay);
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long startMillis = millisTime();
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try {
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ss.accept().close();
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fail();
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} catch (SocketException expected) {
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checkDuration(startMillis, delay-100, delay+20_000);
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}
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}
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}
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/**
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* Test timed accept with the thread interrupt status set.
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*/
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@Test
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void testTimedAccept8() throws IOException {
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assumeFalse(Thread.currentThread().isVirtual(), "Main test is a virtual thread");
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(2000);
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Thread.currentThread().interrupt();
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long startMillis = millisTime();
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try {
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Socket s = ss.accept();
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s.close();
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fail();
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} catch (SocketTimeoutException expected) {
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// accept should have blocked for 2 seconds
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int timeout = ss.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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assertTrue(Thread.currentThread().isInterrupted());
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} finally {
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Thread.interrupted(); // clear interrupt status
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}
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}
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}
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/**
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* Test interrupt of thread blocked in timed accept.
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*/
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@Test
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void testTimedAccept9() throws IOException {
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assumeFalse(Thread.currentThread().isVirtual(), "Main test is a virtual thread");
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(4000);
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// interrupt thread after 1 second
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Future<?> interrupter = scheduleInterrupt(Thread.currentThread(), 1000);
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long startMillis = millisTime();
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try {
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Socket s = ss.accept(); // should block for 4 seconds
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s.close();
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fail();
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} catch (SocketTimeoutException expected) {
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// accept should have blocked for 4 seconds
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int timeout = ss.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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assertTrue(Thread.currentThread().isInterrupted());
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} finally {
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interrupter.cancel(true);
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Thread.interrupted(); // clear interrupt status
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}
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}
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}
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/**
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* Test two threads blocked in timed accept where no connection is established.
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*/
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@Test
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void testTimedAccept10() throws Exception {
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ExecutorService pool = Executors.newFixedThreadPool(2);
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(4000);
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long startMillis = millisTime();
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Future<Socket> result1 = pool.submit(ss::accept);
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Future<Socket> result2 = pool.submit(ss::accept);
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// both tasks should complete with SocketTimeoutException
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Throwable e = assertThrows(ExecutionException.class, result1::get);
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assertTrue(e.getCause() instanceof SocketTimeoutException);
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e = assertThrows(ExecutionException.class, result2::get);
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assertTrue(e.getCause() instanceof SocketTimeoutException);
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// should get here in 4 seconds, not 8 seconds
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int timeout = ss.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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} finally {
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pool.shutdown();
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}
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}
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/**
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* Test two threads blocked in timed accept where one connection is established.
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*/
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@Test
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void testTimedAccept11() throws Exception {
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ExecutorService pool = Executors.newFixedThreadPool(2);
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try (ServerSocket ss = boundServerSocket()) {
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ss.setSoTimeout(4000);
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long startMillis = millisTime();
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Future<Socket> result1 = pool.submit(ss::accept);
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Future<Socket> result2 = pool.submit(ss::accept);
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// establish connection after 2 seconds
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scheduleConnect(ss.getLocalSocketAddress(), 2000);
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// one task should have accepted the connection, the other should
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// have completed with SocketTimeoutException
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Socket s1 = null;
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try {
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s1 = result1.get();
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s1.close();
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} catch (ExecutionException e) {
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assertTrue(e.getCause() instanceof SocketTimeoutException);
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}
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Socket s2 = null;
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try {
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s2 = result2.get();
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s2.close();
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} catch (ExecutionException e) {
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assertTrue(e.getCause() instanceof SocketTimeoutException);
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}
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assertTrue((s1 != null) ^ (s2 != null));
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// should get here in 4 seconds, not 8 seconds
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int timeout = ss.getSoTimeout();
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checkDuration(startMillis, timeout-100, timeout+20_000);
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|
} finally {
|
|
pool.shutdown();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test Socket setSoTimeout with a negative timeout.
|
|
*/
|
|
@Test
|
|
void testBadTimeout1() throws IOException {
|
|
try (Socket s = new Socket()) {
|
|
assertThrows(IllegalArgumentException.class, () -> s.setSoTimeout(-1));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test ServerSocket setSoTimeout with a negative timeout.
|
|
*/
|
|
@Test
|
|
void testBadTimeout2() throws IOException {
|
|
try (ServerSocket ss = new ServerSocket()) {
|
|
assertThrows(IllegalArgumentException.class, () -> ss.setSoTimeout(-1));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a ServerSocket bound to a port on the loopback address.
|
|
*/
|
|
static ServerSocket boundServerSocket() throws IOException {
|
|
var loopback = InetAddress.getLoopbackAddress();
|
|
ServerSocket ss = new ServerSocket();
|
|
ss.bind(new InetSocketAddress(loopback, 0));
|
|
return ss;
|
|
}
|
|
|
|
/**
|
|
* An operation that accepts two arguments and may throw IOException.
|
|
*/
|
|
interface ThrowingBiConsumer<T, U> {
|
|
void accept(T t, U u) throws IOException;
|
|
}
|
|
|
|
/**
|
|
* Invokes the consumer with a connected pair of sockets.
|
|
*/
|
|
static void withConnection(ThrowingBiConsumer<Socket, Socket> consumer)
|
|
throws IOException
|
|
{
|
|
Socket s1 = null;
|
|
Socket s2 = null;
|
|
try (ServerSocket ss = boundServerSocket()) {
|
|
s1 = new Socket();
|
|
s1.connect(ss.getLocalSocketAddress());
|
|
s2 = ss.accept();
|
|
consumer.accept(s1, s2);
|
|
} finally {
|
|
if (s1 != null) s1.close();
|
|
if (s2 != null) s2.close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Schedule c to be closed after a delay.
|
|
*/
|
|
static void scheduleClose(Closeable c, long delay) {
|
|
schedule(() -> {
|
|
try {
|
|
c.close();
|
|
} catch (IOException ioe) { }
|
|
}, delay);
|
|
}
|
|
|
|
/**
|
|
* Schedule thread to be interrupted after a delay.
|
|
*/
|
|
static Future<?> scheduleInterrupt(Thread thread, long delay) {
|
|
return schedule(() -> thread.interrupt(), delay);
|
|
}
|
|
|
|
/**
|
|
* Schedule a thread to connect to the given end point after a delay.
|
|
*/
|
|
static void scheduleConnect(SocketAddress remote, long delay) {
|
|
schedule(() -> {
|
|
try (Socket s = new Socket()) {
|
|
s.connect(remote);
|
|
} catch (IOException ioe) { }
|
|
}, delay);
|
|
}
|
|
|
|
/**
|
|
* Schedule a thread to read to EOF after a delay.
|
|
*/
|
|
static void scheduleReadToEOF(InputStream in, long delay) {
|
|
schedule(() -> {
|
|
byte[] bytes = new byte[8192];
|
|
try {
|
|
while (in.read(bytes) != -1) { }
|
|
} catch (IOException ioe) { }
|
|
}, delay);
|
|
}
|
|
|
|
/**
|
|
* Schedule a thread to write after a delay.
|
|
*/
|
|
static void scheduleWrite(OutputStream out, byte[] data, long delay) {
|
|
schedule(() -> {
|
|
try {
|
|
out.write(data);
|
|
} catch (IOException ioe) { }
|
|
}, delay);
|
|
}
|
|
static void scheduleWrite(OutputStream out, int b, long delay) {
|
|
scheduleWrite(out, new byte[] { (byte)b }, delay);
|
|
}
|
|
|
|
static Future<?> schedule(Runnable task, long delay) {
|
|
return ForkJoinPool.commonPool().schedule(task, delay, TimeUnit.MILLISECONDS);
|
|
}
|
|
|
|
/**
|
|
* Returns the current time in milliseconds.
|
|
*/
|
|
private static long millisTime() {
|
|
long now = System.nanoTime();
|
|
return TimeUnit.MILLISECONDS.convert(now, TimeUnit.NANOSECONDS);
|
|
}
|
|
|
|
/**
|
|
* Check the duration of a task.
|
|
* @param start start time, in milliseconds
|
|
* @param min minimum expected duration, in milliseconds
|
|
* @param max maximum expected duration, in milliseconds
|
|
* @return the duration (now - start), in milliseconds
|
|
*/
|
|
private static long checkDuration(long start, long min, long max) {
|
|
long duration = millisTime() - start;
|
|
assertTrue(duration >= min,
|
|
"Duration " + duration + "ms, expected >= " + min + "ms");
|
|
assertTrue(duration <= max,
|
|
"Duration " + duration + "ms, expected <= " + max + "ms");
|
|
return duration;
|
|
}
|
|
}
|