test/jdk/java/net/httpclient/websocket/AutomaticPong.java
author pconcannon
Mon, 23 Sep 2019 16:53:16 +0100
changeset 58289 3a79d4cccbcb
parent 49765 ee6f7a61f3a5
permissions -rw-r--r--
8217825: Verify @AfterTest is used correctly in WebSocket tests Summary: Remove @AfterTest tags; added in explicit closing of resources e.g. httpServer, webSocket, etc Reviewed-by: dfuchs, prappo
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/*
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 * Copyright (c) 2018, 2019, 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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 * @build DummyWebSocketServer
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 * @run testng/othervm
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 *      -Djdk.internal.httpclient.websocket.debug=true
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 *       AutomaticPong
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 */
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import java.io.IOException;
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import java.net.http.WebSocket;
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import java.nio.ByteBuffer;
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import java.nio.charset.StandardCharsets;
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import java.util.List;
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import static java.net.http.HttpClient.newHttpClient;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertFalse;
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import static org.testng.Assert.assertTrue;
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import static org.testng.Assert.fail;
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public class AutomaticPong {
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    /*
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     * The sendClose method has been invoked and a Ping comes from the server.
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     * Naturally, the client cannot reply with a Pong (the output has been
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     * closed). However, this MUST not be treated as an error.
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     * At this stage the server either has received or pretty soon will receive
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     * the Close message sent by the sendClose. Thus, the server will know the
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     * client cannot send further messages and it's up to the server to decide
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     * how to react on the corresponding Pong not being received.
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     */
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    @Test
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    public void sendCloseThenAutomaticPong() throws IOException {
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        int[] bytes = {
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                0x89, 0x00,                                     // ping
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                0x89, 0x06, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x3f, // ping hello?
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                0x88, 0x00,                                     // close
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        };
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        try (var server = Support.serverWithCannedData(bytes)) {
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            server.open();
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            MockListener listener = new MockListener() {
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                @Override
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                protected void onOpen0(WebSocket webSocket) {
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                    /* request nothing */
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                }
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            };
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            var webSocket = newHttpClient()
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                    .newWebSocketBuilder()
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                    .buildAsync(server.getURI(), listener)
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                    .join();
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            try {
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                webSocket.sendClose(WebSocket.NORMAL_CLOSURE, "ok").join();
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                // now request all messages available
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                webSocket.request(Long.MAX_VALUE);
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                List<MockListener.Invocation> actual = listener.invocations();
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                ByteBuffer hello = ByteBuffer.wrap("hello?".getBytes(StandardCharsets.UTF_8));
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                ByteBuffer empty = ByteBuffer.allocate(0);
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                List<MockListener.Invocation> expected = List.of(
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                        MockListener.Invocation.onOpen(webSocket),
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                        MockListener.Invocation.onPing(webSocket, empty),
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                        MockListener.Invocation.onPing(webSocket, hello),
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                        MockListener.Invocation.onClose(webSocket, 1005, "")
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                );
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                assertEquals(actual, expected);
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            } finally {
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                webSocket.abort();
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            }
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        }
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    }
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    /*
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     * The server sends a number of contiguous Ping messages. The client replies
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     * to these messages automatically. According to RFC 6455 a WebSocket client
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     * is free to reply only to the most recent Pings.
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     *
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     * What is checked here is that:
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     *
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     *     a) the order of Pong replies corresponds to the Pings received,
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     *     b) the last Pong corresponds to the last Ping
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     *     c) there are no unrelated Pongs
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     */
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    @Test(dataProvider = "nPings")
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    public void automaticPongs(int nPings) throws Exception {
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        // big enough to not bother with resize
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        ByteBuffer buffer = ByteBuffer.allocate(65536);
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        Frame.HeaderWriter w = new Frame.HeaderWriter();
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        for (int i = 0; i < nPings; i++) {
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            w.fin(true)
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             .opcode(Frame.Opcode.PING)
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             .noMask()
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             .payloadLen(4)    // the length of the number of the Ping (int)
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             .write(buffer);
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            buffer.putInt(i);  // the number of the Ping (int)
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        }
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        w.fin(true)
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         .opcode(Frame.Opcode.CLOSE)
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         .noMask()
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         .payloadLen(2)
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        .write(buffer);
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        buffer.putChar((char) 1000);
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        buffer.flip();
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        try (var server = Support.serverWithCannedData(buffer.array())) {
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            server.open();
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            MockListener listener = new MockListener();
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            var webSocket = newHttpClient()
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                    .newWebSocketBuilder()
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                    .buildAsync(server.getURI(), listener)
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                    .join();
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            try {
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                List<MockListener.Invocation> inv = listener.invocations();
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                assertEquals(inv.size(), nPings + 2); // n * onPing + onOpen + onClose
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                ByteBuffer data = server.read();
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                Frame.Reader reader = new Frame.Reader();
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                Frame.Consumer consumer = new Frame.Consumer() {
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                    ByteBuffer number = ByteBuffer.allocate(4);
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                    Frame.Masker masker = new Frame.Masker();
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                    int i = -1;
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                    boolean closed;
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                    @Override
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                    public void fin(boolean value) {
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                        assertTrue(value);
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                    }
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                    @Override
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                    public void rsv1(boolean value) {
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                        assertFalse(value);
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                    }
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                    @Override
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                    public void rsv2(boolean value) {
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                        assertFalse(value);
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                    }
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                    @Override
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                    public void rsv3(boolean value) {
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                        assertFalse(value);
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                    }
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                    @Override
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                    public void opcode(Frame.Opcode value) {
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                        if (value == Frame.Opcode.CLOSE) {
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                            closed = true;
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                            return;
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                        }
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                        assertEquals(value, Frame.Opcode.PONG);
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                    }
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                    @Override
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                    public void mask(boolean value) {
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                        assertTrue(value);
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                    }
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                    @Override
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                    public void payloadLen(long value) {
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                        if (!closed)
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                            assertEquals(value, 4);
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                    }
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                    @Override
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                    public void maskingKey(int value) {
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                        masker.mask(value);
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                    }
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                    @Override
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                    public void payloadData(ByteBuffer src) {
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                        masker.transferMasking(src, number);
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                        if (closed) {
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                            return;
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                        }
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                        number.flip();
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                        int n = number.getInt();
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                        System.out.printf("pong number=%s%n", n);
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                        number.clear();
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                        // a Pong with the number less than the maximum of Pongs already
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                        // received MUST never be received
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                        if (i >= n) {
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                            fail(String.format("i=%s, n=%s", i, n));
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                        }
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                        i = n;
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                    }
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                    @Override
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                    public void endFrame() {
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                    }
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                };
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                while (data.hasRemaining()) {
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                    reader.readFrame(data, consumer);
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                }
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            } finally {
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                webSocket.abort();
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            }
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        }
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    }
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    @DataProvider(name = "nPings")
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    public Object[][] nPings() {
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        return new Object[][]{{1}, {2}, {4}, {8}, {9}, {256}};
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    }
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}