| /* |
| * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| /* |
| * @test |
| * @key stress |
| * |
| * @summary converted from VM testbase nsk/stress/network/network005. |
| * VM testbase keywords: [stress, slow, nonconcurrent, quick] |
| * VM testbase readme: |
| * DESCRIPTION |
| * This test make huge number of data transers between one server and |
| * multiple clients communicating via TCP/IP sockets, and checks if those |
| * data are transfered correctly. All TCP/IP sockets are attached to local |
| * host (by its domain name), or to the ``localhost'' loopback (having the |
| * IP address 127.0.0.1). |
| * In this test, 128 client/server connections are established. Once a |
| * connection is established, client passes a large data parcel to server, |
| * and server reads that parcel and checks if it is same as expected |
| * (byte-to-byte equality is desired). Then server passes (some other) parcel |
| * to the client, and client reads and verifies those bytes. This ping-pong |
| * game is repeated 128 times; and after that each pair of sockets checks if |
| * there are no extra bytes accudentally passed through their connection. |
| * Parcels lengths and contents are chosen randomly, and average parcel |
| * length is 128 bytes. So totally, each pair of sockets passes ~16Kb of |
| * data to each other, and thus ~32Kb of data are transfered by each sockets |
| * pair. Totally, ~4Mb of data are transfered by all client/server pairs. |
| * COMMENTS |
| * |
| * @run main/othervm nsk.stress.network.network005 |
| */ |
| |
| package nsk.stress.network; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PrintStream; |
| import java.net.InetAddress; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.net.UnknownHostException; |
| import java.util.Random; |
| |
| /** |
| * This test make huge number of data transers between one server and |
| * multiple clients communicating via TCP/IP sockets, and checks if those |
| * data are transfered correctly. All TCP/IP sockets are attached to local |
| * host (by its domain name), or to the ``localhost'' loopback (having the |
| * IP address 127.0.0.1). |
| * <p> |
| * <p>In this test, 128 client/server connections are established. Once a |
| * connection is established, client passes a large data parcel to server, |
| * and server reads that parcel and checks if it is same as expected |
| * (byte-to-byte equality is desired). Then server passes (some other) parcel |
| * to the client, and client reads and verifies those bytes. This ping-pong |
| * game is repeated 128 times; and after that each pair of sockets checks if |
| * there are no extra bytes accudentally passed through their connection. |
| * <p> |
| * <p>Parcels lengths and contents are chosen randomly, and average parcel |
| * length is 128 bytes. So totally, each pair of sockets passes ~16Kb of |
| * data to each other, and thus ~32Kb of data are transfered by each sockets |
| * pair. Totally, ~4Mb of data are transfered by all client/server pairs. |
| */ |
| public class network005 { |
| /** |
| * Do actually display optional reports? |
| */ |
| static private final boolean DEBUG_MODE = false; |
| |
| /** |
| * Errors and optional reports log. Usually <code>System.out</code>. |
| */ |
| static private PrintStream out = System.out; |
| |
| /** |
| * Print error message: all clients and servers may print concurently. |
| */ |
| static private synchronized void println(Object message) { |
| out.println(message.toString()); |
| } |
| |
| /** |
| * Display optional report: comment ca va. |
| */ |
| static private void display(Object report) { |
| if (DEBUG_MODE) |
| println(report.toString()); |
| } |
| |
| /** |
| * Maximal number of connections this test should open simultaneously. |
| */ |
| private final static int MAX_CONNECTIONS = 128; |
| |
| /** |
| * Check few more connections to make sure that MAX_CONNECTIONS are safe. |
| */ |
| private final static int CONNECTIONS_RESERVE = 10; |
| |
| /** |
| * Number of client/server connections to establish. |
| */ |
| private static final int CONNECTIONS = detectOSLimitation(); |
| |
| /** |
| * Number of parcels to be sent/recieved. |
| */ |
| private static final int DATA_PARCELS = 128; |
| |
| /** |
| * Maximal length of data parcel to be sent/recieved |
| * (it equals to 256 bytes now). |
| */ |
| private static final int MAX_PARCEL = 1 << 8; |
| |
| /** |
| * How many IP sockets can we open simultaneously? |
| * Check if <code>MAX_CONNECTIONS</code> connections |
| * can be open simultaneously. |
| */ |
| private static int detectOSLimitation() { |
| final int CONNECTIONS_TO_TRY = MAX_CONNECTIONS + CONNECTIONS_RESERVE; |
| display("--- Trying to open " + CONNECTIONS_TO_TRY + " connections:"); |
| |
| InetAddress address; |
| ServerSocket serverSocket; |
| try { |
| address = InetAddress.getLocalHost(); |
| int anyPort = 0; |
| int defaultBacklog = 50; |
| serverSocket = new ServerSocket(anyPort, defaultBacklog, address); |
| } catch (IOException ioe) { |
| throw new Error("FATAL error while loading the test: " + ioe); |
| } |
| display(serverSocket.toString()); |
| |
| Socket server[] = new Socket[CONNECTIONS_TO_TRY]; |
| Socket client[] = new Socket[CONNECTIONS_TO_TRY]; |
| |
| int i, port = serverSocket.getLocalPort(); |
| for (i = 0; i < CONNECTIONS_TO_TRY; i++) |
| try { |
| client[i] = new Socket(address, port); |
| display("--- Open: client[" + i + "] = " + client[i]); |
| server[i] = serverSocket.accept(); |
| display("--- Open: server[" + i + "] = " + server[i]); |
| } catch (IOException ioe) { |
| display("--- OOPS! -- failed to open connection #" + i); |
| break; |
| } |
| display("--- Could open " + |
| (i < CONNECTIONS_TO_TRY ? "only " : "") + i + " connections."); |
| display("--- Closing them:"); |
| for (int j = 0; j < i; j++) |
| try { |
| server[j].close(); |
| client[j].close(); |
| } catch (IOException ioe) { |
| throw new Error("FATAL error while loading the test: " + ioe); |
| } |
| display("--- OK."); |
| int safeConnections = i - CONNECTIONS_RESERVE; |
| if (safeConnections < 1) |
| safeConnections = 1; |
| if (safeConnections < MAX_CONNECTIONS) { |
| println("# ------------------------- CAUTION: -------------------"); |
| println("# While checking the OS limitations, the test found that"); |
| println("# only " + i + " TCP/IP socket connections could be safely open"); |
| println("# simultaneously. However, possibility to open at least"); |
| println("# " + MAX_CONNECTIONS + "+" + CONNECTIONS_RESERVE |
| + " connections were expected."); |
| println("# "); |
| println("# So, the test will check only " + safeConnections + " connection" |
| + (safeConnections == 1 ? "" : "s") + " which seem"); |
| println("# safe to be open simultaneously."); |
| println("# ------------------------------------------------------"); |
| } |
| return safeConnections; |
| } |
| |
| /** |
| * Server (or client) thread intended to transfer data parcels to |
| * another client (or server) Agent. |
| */ |
| static private class Agent extends Thread { |
| /** |
| * Agent's client mode. |
| */ |
| final static int CLIENT = 1; |
| /** |
| * Agen's server mode. |
| */ |
| final static int SERVER = 2; |
| |
| /** |
| * Is this agent is client or server one? |
| */ |
| private int mode; |
| |
| /** |
| * This server thread listens the single socket. |
| */ |
| private Socket socket; |
| |
| /** |
| * What is the port number this socket is listening for? |
| */ |
| int getPort() { |
| if (mode == SERVER) |
| return socket.getLocalPort(); |
| else |
| return socket.getPort(); |
| } |
| |
| /** |
| * Address and port of this server socket. |
| */ |
| public String toString() { |
| String mode = (this.mode == CLIENT) ? "Client" : "Server"; |
| return mode + ": " + socket.toString(); |
| } |
| |
| /** |
| * Did the thread failed? If yes, what is the failure's reason. |
| */ |
| Exception exception = null; |
| |
| /** |
| * Find some free port at the given <code>address</code> |
| * and attach new server to hear that port. |
| */ |
| Agent(Socket socket, int mode) { |
| if ((mode != SERVER) && (mode != CLIENT)) |
| throw new IllegalArgumentException("unknown mode=" + mode); |
| this.socket = socket; |
| this.mode = mode; |
| } |
| |
| /** |
| * Transfer <code>DATA_PARCELS</code> parcels of random data. |
| * Set initial seed for pseudo-random numbers generator |
| * to the value of the local port number. |
| * |
| * @see #DATA_PARCELS |
| * @see #getPort() |
| */ |
| public void run() { |
| try { |
| InputStream istream = socket.getInputStream(); |
| OutputStream ostream = socket.getOutputStream(); |
| |
| Random random = new Random(getPort()); |
| |
| for (int i = 0; i < DATA_PARCELS; i++) { |
| Parcel etalon = new Parcel(random); |
| |
| if (mode == SERVER) { |
| Parcel sample = new Parcel(istream); // read |
| if (!sample.equals(etalon)) { |
| println("Server agent for port #" |
| + getPort() + " got unexpected parcel:\n" |
| + "sample=" + sample + "\n" |
| + "etalon=" + etalon); |
| throw new TestFailure( |
| "server has read unexpected parcel"); |
| } |
| |
| etalon.send(ostream); // reply |
| ostream.flush(); |
| |
| } else { |
| etalon.send(ostream); // init transfer |
| ostream.flush(); |
| |
| Parcel sample = new Parcel(istream); // read |
| if (!sample.equals(etalon)) { |
| println("Client agent for port #" |
| + getPort() + " got unexpected parcel:\n" |
| + "sample=" + sample + "\n" |
| + "etalon=" + etalon); |
| throw new TestFailure( |
| "parcel context is unexpected to client"); |
| } |
| } |
| } |
| |
| if (mode == SERVER) { |
| int datum = istream.read(); // wait until client's close() |
| if (datum >= 0) |
| throw new TestFailure( |
| "server has read ambigous byte: " + datum); |
| |
| ostream.close(); // implies: socket.close(); |
| |
| } else { |
| if (istream.available() > 0) { |
| int datum = istream.read(); |
| throw new TestFailure( |
| "client has read ambigous byte: " + datum); |
| } |
| ostream.close(); // implies: socket.close() |
| } |
| |
| } catch (Exception oops) { |
| exception = oops; |
| } |
| } |
| |
| } |
| |
| /** |
| * A data parcel to sent/recieved between Client and Server threads. |
| * When data parcel is sent, first 4 bytes transfered encode the size |
| * of the parcel (i.e.: number of data bytes in the parcel's contents). |
| * Then the parcel's contents bytes are transered. |
| */ |
| static class Parcel { |
| private byte[] parcel; |
| |
| /** |
| * Display all bytes as integer values from 0 to 255; |
| * or return ``<tt>null</tt>'' if this Parcel is not |
| * yet initialized. |
| */ |
| public String toString() { |
| if (parcel == null) |
| return "null"; |
| String s = "{"; |
| for (int i = 0; i < parcel.length; i++) |
| s += (i > 0 ? ", " : "") + ((int) parcel[i] & 0xFF); |
| return s + "}"; |
| } |
| |
| /** |
| * Generate new <code>parcel[]</code> array using the given |
| * <code>random</code> numbers generator. Client and Server |
| * threads should use identical <code>random</code> generators, |
| * so that those threads could generate equal data parcels and |
| * check the parcel just transfered. |
| */ |
| public Parcel(Random random) { |
| int size = random.nextInt(MAX_PARCEL) + 1; |
| parcel = new byte[size]; |
| for (int i = 0; i < size; i++) |
| parcel[i] = (byte) random.nextInt(256); |
| } |
| |
| /** |
| * Read exactly <code>size</code> bytes from the <code>istream</code> |
| * if possible, or throw <code>TestFailure</code> if unexpected end of |
| * <code>istream</code> occurs. |
| */ |
| private static byte[] readBytes(int size, InputStream istream) |
| throws IOException { |
| |
| byte data[] = new byte[size]; |
| for (int i = 0; i < size; i++) { |
| int datum = istream.read(); |
| if (datum < 0) |
| throw new TestFailure( |
| "unexpected EOF: have read: " + i + " bytes of " + size); |
| data[i] = (byte) datum; |
| } |
| return data; |
| } |
| |
| /** |
| * Read 4 bytes from <code>istream</code> and threat them to encode |
| * size of data parcel following these 4 bytes. |
| */ |
| private static int getSize(InputStream istream) throws IOException { |
| byte data[] = readBytes(4, istream); |
| int data0 = (int) data[0] & 0xFF; |
| int data1 = (int) data[1] & 0xFF; |
| int data2 = (int) data[2] & 0xFF; |
| int data3 = (int) data[3] & 0xFF; |
| int sizeWord = data0 + (data1 << 8) + (data2 << 16) + (data3 << 24); |
| int size = sizeWord + 1; |
| if (size <= 0) |
| throw new TestFailure("illegal size: " + size); |
| return size; |
| } |
| |
| /** |
| * Send 4 bytes encoding actual size of the parcel just to be transfered. |
| */ |
| private static void putSize(OutputStream ostream, int size) |
| throws IOException { |
| |
| if (size <= 0) |
| throw new TestFailure("illegal size: " + size); |
| |
| int sizeWord = size - 1; |
| byte data[] = new byte[4]; |
| data[0] = (byte) sizeWord; |
| data[1] = (byte) (sizeWord >> 8); |
| data[2] = (byte) (sizeWord >> 16); |
| data[3] = (byte) (sizeWord >> 24); |
| ostream.write(data); |
| } |
| |
| /** |
| * Recieve data parcel. |
| */ |
| public Parcel(InputStream istream) throws IOException { |
| int size = getSize(istream); |
| parcel = readBytes(size, istream); |
| } |
| |
| /** |
| * Send <code>this</code> data parcel. |
| */ |
| public void send(OutputStream ostream) throws IOException { |
| int size = parcel.length; |
| putSize(ostream, size); |
| ostream.write(parcel); |
| } |
| |
| /** |
| * Check byte-to-byte equality between <code>this</code> and the |
| * <code>other</code> parcels. |
| */ |
| public boolean equals(Parcel other) { |
| if (this.parcel.length != other.parcel.length) |
| return false; |
| int size = parcel.length; |
| for (int i = 0; i < size; i++) |
| if (this.parcel[i] != other.parcel[i]) |
| return false; |
| return true; |
| } |
| |
| } |
| |
| /** |
| * Server or Client thread may throw this exception to report the test |
| * failure. |
| */ |
| static class TestFailure extends RuntimeException { |
| /** |
| * Report particular <code>purpose</code> of the test failure. |
| */ |
| public TestFailure(String purpose) { |
| super(purpose); |
| } |
| |
| } |
| |
| /** |
| * Attach client and server sockets to the local host, and check if |
| * huge number of data transfers could be correctly transfered between |
| * these sockets. |
| * <p> |
| * <p>Command-line parameters provided with <code>args[]</code> may |
| * prompt the local host IP address or domain name. Execute: |
| * <br> |
| * <code>java network005 [<i>IP-address</i> | <i>host_name</i> | |
| * localhost ]</code> |
| * <br>where parameters are: |
| * <br> |
| * <code><i>IP-address</i></code> - local hots's address, or 127.0.0.1 |
| * <br> |
| * <code><i>host_name</i></code> - local host's domain name, or the |
| * keyword ``<code>localhost</code>'' |
| * <br> |
| * <code>localhost</code> - placeholder for the IP-address 127.0.0.1 |
| * <br>By default, the test uses the Internet address available via |
| * the method <code>InetAddress.getLocalHost()</code> |
| */ |
| public static int run(String args[], PrintStream out) { |
| network005.out = out; |
| |
| // |
| // Get IP address of the local machine. |
| // |
| |
| InetAddress address = null; |
| try { |
| switch (args.length) { |
| case 0: |
| address = InetAddress.getLocalHost(); |
| break; |
| case 1: |
| String hostName = args[0]; |
| address = InetAddress.getByName(args[0]); |
| break; |
| default: |
| println("Use:"); |
| println(" java network005"); |
| println("or:"); |
| println(" java network005 ${IP_ADDRESS}"); |
| println("or:"); |
| println(" java network005 ${HOST_NAME}"); |
| println("or:"); |
| println(" java network005 localhost"); |
| return 2; // FAILED |
| } |
| } catch (UnknownHostException exception) { |
| println(exception); |
| return 2; // FAILED |
| } |
| display("Host: " + address); |
| |
| // |
| // Assign ServerSocket to the local host: |
| // |
| |
| ServerSocket serverSocket; |
| try { |
| final int anyPort = 0; |
| final int defaultBacklog = 50; |
| serverSocket = new ServerSocket(anyPort, defaultBacklog, address); |
| } catch (IOException ioe) { |
| println("# Failed to assign ServerSocket on: " + address); |
| return 2; |
| } |
| display(serverSocket.toString()); |
| |
| final int port = serverSocket.getLocalPort(); |
| |
| // |
| // Incarnate the server & the client agents. |
| // |
| |
| Agent server[] = new Agent[CONNECTIONS]; |
| Agent client[] = new Agent[CONNECTIONS]; |
| |
| for (int i = 0; i < CONNECTIONS; i++) |
| try { |
| Socket socket; |
| socket = new Socket(address, port); |
| client[i] = new Agent(socket, Agent.CLIENT); |
| display("Client #" + i + ": " + socket); |
| socket = serverSocket.accept(); |
| server[i] = new Agent(socket, Agent.SERVER); |
| display("Server #" + i + ": " + socket); |
| } catch (IOException io) { |
| println("Failed establish conection #" + i + ": " + io); |
| return 2; |
| } |
| |
| // |
| // Execute the server and client threads. |
| // |
| |
| Exception exception = null; |
| for (int i = 0; i < CONNECTIONS; i++) { |
| server[i].start(); |
| client[i].start(); |
| } |
| try { |
| boolean someIsAlive = true; |
| while (someIsAlive) { |
| boolean aliveFound = false; |
| boolean someBroken = false; |
| for (int i = 0; i < CONNECTIONS; i++) |
| if (client[i].isAlive() || server[i].isAlive()) { |
| if ((client[i].exception != null) || |
| (server[i].exception != null)) |
| someBroken = true; |
| aliveFound = true; |
| Thread.yield(); |
| } |
| someIsAlive = aliveFound; |
| if (someBroken) |
| break; |
| } |
| } catch (TestFailure failure) { |
| exception = failure; |
| } |
| |
| // Failure diagnostics, if needed. |
| |
| Exception problem[] = new Exception[2 * CONNECTIONS + 1]; |
| problem[0] = exception; |
| for (int i = 0; i < CONNECTIONS; i++) { |
| problem[2 * i + 1] = server[i].exception; |
| problem[2 * i + 2] = client[i].exception; |
| } |
| |
| int exitCode = 0; |
| |
| for (int i = 0; i < 2 * CONNECTIONS + 1; i++) |
| if (problem[i] != null) { |
| out.println("#### OOPS ! ####"); |
| problem[i].printStackTrace(out); |
| exitCode = 2; |
| } |
| |
| if (exitCode != 0) { |
| out.println("#### OOPS ! ####"); |
| out.println("# Test failed."); |
| return 2; // FAILED |
| } |
| display("Test passed."); |
| return 0; // PASSED |
| } |
| |
| /** |
| * Re-calls to the method <code>run(args[],out)</code> actually |
| * performing the test; and stop with exit code 95 if the test |
| * has passed, or with code 97 if the test has failed. |
| * (This is JCK-like exit codes convention.) |
| * |
| * @see #run(String[], PrintStream) |
| */ |
| public static void main(String args[]) { |
| int exitCode = run(args, System.out); |
| System.exit(exitCode + 95); |
| // JCK-like exit code. |
| } |
| |
| } |