/*
* Copyright (c) 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
* @build DummyWebSocketServer
* @run testng/othervm WebSocketTest
*/
import org.testng.annotations.Test;
import java.io.IOException;
import java.net.http.WebSocket;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.SocketChannel;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.stream.Collectors;
import static java.net.http.HttpClient.newHttpClient;
import static java.net.http.WebSocket.NORMAL_CLOSURE;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertThrows;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
public class WebSocketTest {
private static final Class<NullPointerException> NPE = NullPointerException.class;
private static final Class<IllegalArgumentException> IAE = IllegalArgumentException.class;
private static final Class<IllegalStateException> ISE = IllegalStateException.class;
private static final Class<IOException> IOE = IOException.class;
@Test
public void immediateAbort() throws Exception {
try (DummyWebSocketServer server = serverWithCannedData(0x81, 0x00, 0x88, 0x00)) {
server.open();
CompletableFuture<Void> messageReceived = new CompletableFuture<>();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() {
@Override
public void onOpen(WebSocket webSocket) {
/* no initial request */
}
@Override
public CompletionStage<?> onText(WebSocket webSocket,
CharSequence message,
WebSocket.MessagePart part) {
messageReceived.complete(null);
return null;
}
@Override
public CompletionStage<?> onBinary(WebSocket webSocket,
ByteBuffer message,
WebSocket.MessagePart part) {
messageReceived.complete(null);
return null;
}
@Override
public CompletionStage<?> onPing(WebSocket webSocket,
ByteBuffer message) {
messageReceived.complete(null);
return null;
}
@Override
public CompletionStage<?> onPong(WebSocket webSocket,
ByteBuffer message) {
messageReceived.complete(null);
return null;
}
@Override
public CompletionStage<?> onClose(WebSocket webSocket,
int statusCode,
String reason) {
messageReceived.complete(null);
return null;
}
})
.join();
ws.abort();
// Each consecutive abort MUST be a no-op:
ws.abort();
assertTrue(ws.isInputClosed());
assertTrue(ws.isOutputClosed());
assertEquals(ws.getSubprotocol(), "");
ws.abort();
assertTrue(ws.isInputClosed());
assertTrue(ws.isOutputClosed());
assertEquals(ws.getSubprotocol(), "");
// At this point request MUST be a no-op:
ws.request(1);
ws.request(Long.MAX_VALUE);
// Throws IAE regardless of whether WebSocket is closed or not:
assertThrows(IAE, () -> ws.request(Integer.MIN_VALUE));
assertThrows(IAE, () -> ws.request(Long.MIN_VALUE));
assertThrows(IAE, () -> ws.request(-1));
assertThrows(IAE, () -> ws.request(0));
// Even though there is a bunch of messages readily available on the
// wire we shouldn't have received any of them as we aborted before
// the first request
try {
messageReceived.get(10, TimeUnit.SECONDS);
fail();
} catch (TimeoutException expected) {
System.out.println("Finished waiting");
}
assertCompletesExceptionally(IOE, ws.sendText("text!", false));
assertCompletesExceptionally(IOE, ws.sendText("text!", true));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(16), false));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(16), true));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(16)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(16)));
// Checked last because it changes the state of WebSocket
assertCompletesExceptionally(IOE, ws.sendClose(NORMAL_CLOSURE, "a reason"));
}
}
private static DummyWebSocketServer serverWithCannedData(int... data) {
byte[] copy = new byte[data.length];
for (int i = 0; i < data.length; i++) {
copy[i] = (byte) data[i];
}
return new DummyWebSocketServer() {
@Override
protected void serve(SocketChannel channel) throws IOException {
ByteBuffer closeMessage = ByteBuffer.wrap(copy);
channel.write(closeMessage);
super.serve(channel);
}
};
}
private static void assertCompletesExceptionally(Class<? extends Throwable> clazz,
CompletableFuture<?> stage) {
stage.handle((result, error) -> {
if (error instanceof CompletionException) {
Throwable cause = error.getCause();
if (cause == null) {
throw new AssertionError("Unexpected null cause: " + error);
}
assertException(clazz, cause);
} else {
assertException(clazz, error);
}
return null;
}).join();
}
private static void assertException(Class<? extends Throwable> clazz,
Throwable t) {
if (t == null) {
throw new AssertionError("Expected " + clazz + ", caught nothing");
}
if (!clazz.isInstance(t)) {
throw new AssertionError("Expected " + clazz + ", caught " + t);
}
}
@Test
public void sendMethodsThrowNPE() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
assertThrows(NPE, () -> ws.sendText(null, false));
assertThrows(NPE, () -> ws.sendText(null, true));
assertThrows(NPE, () -> ws.sendBinary(null, false));
assertThrows(NPE, () -> ws.sendBinary(null, true));
assertThrows(NPE, () -> ws.sendPing(null));
assertThrows(NPE, () -> ws.sendPong(null));
assertThrows(NPE, () -> ws.sendClose(NORMAL_CLOSURE, null));
ws.abort();
assertThrows(NPE, () -> ws.sendText(null, false));
assertThrows(NPE, () -> ws.sendText(null, true));
assertThrows(NPE, () -> ws.sendBinary(null, false));
assertThrows(NPE, () -> ws.sendBinary(null, true));
assertThrows(NPE, () -> ws.sendPing(null));
assertThrows(NPE, () -> ws.sendPong(null));
assertThrows(NPE, () -> ws.sendClose(NORMAL_CLOSURE, null));
}
}
// TODO: request in onClose/onError
// TODO: throw exception in onClose/onError
// TODO: exception is thrown from request()
@Test
public void sendCloseCompleted() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ws.sendClose(NORMAL_CLOSURE, "").join();
assertTrue(ws.isOutputClosed());
assertEquals(ws.getSubprotocol(), "");
ws.request(1); // No exceptions must be thrown
}
}
@Test
public void sendClosePending() throws Exception {
try (DummyWebSocketServer server = notReadingServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ByteBuffer data = ByteBuffer.allocate(65536);
for (int i = 0; ; i++) { // fill up the send buffer
System.out.println("cycle #" + i);
try {
ws.sendBinary(data, true).get(10, TimeUnit.SECONDS);
data.clear();
} catch (TimeoutException e) {
break;
}
}
CompletableFuture<WebSocket> cf = ws.sendClose(NORMAL_CLOSURE, "");
// The output closes even if the Close message has not been sent
assertFalse(cf.isDone());
assertTrue(ws.isOutputClosed());
assertEquals(ws.getSubprotocol(), "");
}
}
/*
* This server does not read from the wire, allowing its client to fill up
* their send buffer. Used to test scenarios with outstanding send
* operations.
*/
private static DummyWebSocketServer notReadingServer() {
return new DummyWebSocketServer() {
@Override
protected void serve(SocketChannel channel) throws IOException {
try {
Thread.sleep(Long.MAX_VALUE);
} catch (InterruptedException e) {
throw new IOException(e);
}
}
};
}
@Test
public void abortPendingSendBinary() throws Exception {
try (DummyWebSocketServer server = notReadingServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ByteBuffer data = ByteBuffer.allocate(65536);
CompletableFuture<WebSocket> cf = null;
for (int i = 0; ; i++) { // fill up the send buffer
System.out.println("cycle #" + i);
try {
cf = ws.sendBinary(data, true);
cf.get(10, TimeUnit.SECONDS);
data.clear();
} catch (TimeoutException e) {
break;
}
}
ws.abort();
assertTrue(ws.isOutputClosed());
assertTrue(ws.isInputClosed());
assertCompletesExceptionally(IOException.class, cf);
}
}
@Test
public void abortPendingSendText() throws Exception {
try (DummyWebSocketServer server = notReadingServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
String data = stringWith2NBytes(32768);
CompletableFuture<WebSocket> cf = null;
for (int i = 0; ; i++) { // fill up the send buffer
System.out.println("cycle #" + i);
try {
cf = ws.sendText(data, true);
cf.get(10, TimeUnit.SECONDS);
} catch (TimeoutException e) {
break;
}
}
ws.abort();
assertTrue(ws.isOutputClosed());
assertTrue(ws.isInputClosed());
assertCompletesExceptionally(IOException.class, cf);
}
}
private static String stringWith2NBytes(int n) {
// -- Russian Alphabet (33 characters, 2 bytes per char) --
char[] abc = {
0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0401, 0x0416,
0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E,
0x041F, 0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426,
0x0427, 0x0428, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E,
0x042F,
};
// repeat cyclically
StringBuilder sb = new StringBuilder(n);
for (int i = 0, j = 0; i < n; i++, j = (j + 1) % abc.length) {
sb.append(abc[j]);
}
String s = sb.toString();
assert s.length() == n && s.getBytes(StandardCharsets.UTF_8).length == 2 * n;
return s;
}
@Test
public void testIllegalArgument() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
assertCompletesExceptionally(IAE, ws.sendPing(ByteBuffer.allocate(126)));
assertCompletesExceptionally(IAE, ws.sendPing(ByteBuffer.allocate(127)));
assertCompletesExceptionally(IAE, ws.sendPing(ByteBuffer.allocate(128)));
assertCompletesExceptionally(IAE, ws.sendPing(ByteBuffer.allocate(129)));
assertCompletesExceptionally(IAE, ws.sendPing(ByteBuffer.allocate(256)));
assertCompletesExceptionally(IAE, ws.sendPong(ByteBuffer.allocate(126)));
assertCompletesExceptionally(IAE, ws.sendPong(ByteBuffer.allocate(127)));
assertCompletesExceptionally(IAE, ws.sendPong(ByteBuffer.allocate(128)));
assertCompletesExceptionally(IAE, ws.sendPong(ByteBuffer.allocate(129)));
assertCompletesExceptionally(IAE, ws.sendPong(ByteBuffer.allocate(256)));
assertCompletesExceptionally(IOE, ws.sendText(incompleteString(), true));
assertCompletesExceptionally(IOE, ws.sendText(incompleteString(), false));
assertCompletesExceptionally(IOE, ws.sendText(malformedString(), true));
assertCompletesExceptionally(IOE, ws.sendText(malformedString(), false));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWithNBytes(124)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWithNBytes(125)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWithNBytes(128)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWithNBytes(256)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWithNBytes(257)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, stringWith2NBytes((123 / 2) + 1)));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, malformedString()));
assertCompletesExceptionally(IAE, ws.sendClose(NORMAL_CLOSURE, incompleteString()));
assertCompletesExceptionally(IAE, ws.sendClose(-2, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(-1, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(0, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(500, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(998, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(999, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1002, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1003, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1006, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1007, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1009, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1010, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1012, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1013, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(1015, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(5000, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(32768, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(65535, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(65536, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(Integer.MAX_VALUE, "a reason"));
assertCompletesExceptionally(IAE, ws.sendClose(Integer.MIN_VALUE, "a reason"));
assertThrows(IAE, () -> ws.request(Integer.MIN_VALUE));
assertThrows(IAE, () -> ws.request(Long.MIN_VALUE));
assertThrows(IAE, () -> ws.request(-1));
assertThrows(IAE, () -> ws.request(0));
}
}
private static String malformedString() {
return new String(new char[]{0xDC00, 0xD800});
}
private static String incompleteString() {
return new String(new char[]{0xD800});
}
private static String stringWithNBytes(int n) {
char[] chars = new char[n];
Arrays.fill(chars, 'A');
return new String(chars);
}
@Test
public void outstanding1() throws Exception {
try (DummyWebSocketServer server = notReadingServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ByteBuffer data = ByteBuffer.allocate(65536);
for (int i = 0; ; i++) { // fill up the send buffer
System.out.println("cycle #" + i);
try {
ws.sendBinary(data, true).get(10, TimeUnit.SECONDS);
data.clear();
} catch (TimeoutException e) {
break;
}
}
assertCompletesExceptionally(ISE, ws.sendBinary(ByteBuffer.allocate(0), true));
assertCompletesExceptionally(ISE, ws.sendText("", true));
}
}
@Test
public void outstanding2() throws Exception {
try (DummyWebSocketServer server = notReadingServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
CharBuffer data = CharBuffer.allocate(65536);
for (int i = 0; ; i++) { // fill up the send buffer
System.out.println("cycle #" + i);
try {
ws.sendText(data, true).get(10, TimeUnit.SECONDS);
data.clear();
} catch (TimeoutException e) {
break;
}
}
assertCompletesExceptionally(ISE, ws.sendText("", true));
assertCompletesExceptionally(ISE, ws.sendBinary(ByteBuffer.allocate(0), true));
}
}
@Test
public void interleavingTypes1() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ws.sendBinary(ByteBuffer.allocate(16), false).join();
assertCompletesExceptionally(ISE, ws.sendText("text", false));
assertCompletesExceptionally(ISE, ws.sendText("text", true));
}
}
@Test
public void interleavingTypes2() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ws.sendText("text", false).join();
assertCompletesExceptionally(ISE, ws.sendBinary(ByteBuffer.allocate(16), false));
assertCompletesExceptionally(ISE, ws.sendBinary(ByteBuffer.allocate(16), true));
}
}
@Test
public void sendMethodsThrowIOE1() throws IOException {
try (DummyWebSocketServer server = new DummyWebSocketServer()) {
server.open();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() { })
.join();
ws.sendClose(NORMAL_CLOSURE, "ok").join();
assertCompletesExceptionally(IOE, ws.sendClose(WebSocket.NORMAL_CLOSURE, "ok"));
assertCompletesExceptionally(IOE, ws.sendText("", true));
assertCompletesExceptionally(IOE, ws.sendText("", false));
assertCompletesExceptionally(IOE, ws.sendText("abc", true));
assertCompletesExceptionally(IOE, ws.sendText("abc", false));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(0), true));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(0), false));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(1), true));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(1), false));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(125)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(124)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(1)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(0)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(125)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(124)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(1)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(0)));
}
}
@Test
public void sendMethodsThrowIOE2() throws Exception {
try (DummyWebSocketServer server = serverWithCannedData(0x88, 0x00)) {
server.open();
CompletableFuture<Void> onCloseCalled = new CompletableFuture<>();
CompletableFuture<Void> canClose = new CompletableFuture<>();
WebSocket ws = newHttpClient()
.newWebSocketBuilder()
.buildAsync(server.getURI(), new WebSocket.Listener() {
@Override
public CompletionStage<?> onClose(WebSocket webSocket,
int statusCode,
String reason) {
System.out.printf("onClose(%s, '%s')%n", statusCode, reason);
onCloseCalled.complete(null);
return canClose;
}
@Override
public void onError(WebSocket webSocket, Throwable error) {
System.out.println("onError(" + error + ")");
onCloseCalled.completeExceptionally(error);
}
})
.join();
onCloseCalled.join(); // Wait for onClose to be called
canClose.complete(null); // Signal to the WebSocket it can close the output
TimeUnit.SECONDS.sleep(5); // Give canClose some time to reach the WebSocket
assertCompletesExceptionally(IOE, ws.sendClose(WebSocket.NORMAL_CLOSURE, "ok"));
assertCompletesExceptionally(IOE, ws.sendText("", true));
assertCompletesExceptionally(IOE, ws.sendText("", false));
assertCompletesExceptionally(IOE, ws.sendText("abc", true));
assertCompletesExceptionally(IOE, ws.sendText("abc", false));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(0), true));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(0), false));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(1), true));
assertCompletesExceptionally(IOE, ws.sendBinary(ByteBuffer.allocate(1), false));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(125)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(124)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(1)));
assertCompletesExceptionally(IOE, ws.sendPing(ByteBuffer.allocate(0)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(125)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(124)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(1)));
assertCompletesExceptionally(IOE, ws.sendPong(ByteBuffer.allocate(0)));
}
}
@Test
public void simpleAggregatingBinaryMessages() throws IOException {
List<byte[]> expected = List.of("alpha", "beta", "gamma", "delta")
.stream()
.map(s -> s.getBytes(StandardCharsets.US_ASCII))
.collect(Collectors.toList());
int[] binary = new int[]{
0x82, 0x05, 0x61, 0x6c, 0x70, 0x68, 0x61, // [alpha]
0x02, 0x02, 0x62, 0x65, // [be
0x80, 0x02, 0x74, 0x61, // ta]
0x02, 0x01, 0x67, // [g
0x00, 0x01, 0x61, // a
0x00, 0x00, //
0x00, 0x00, //
0x00, 0x01, 0x6d, // m
0x00, 0x01, 0x6d, // m
0x80, 0x01, 0x61, // a]
0x8a, 0x00, // <PONG>
0x02, 0x04, 0x64, 0x65, 0x6c, 0x74, // [delt
0x00, 0x01, 0x61, // a
0x80, 0x00, // ]
0x88, 0x00 // <CLOSE>
};
CompletableFuture<List<byte[]>> actual = new CompletableFuture<>();
try (DummyWebSocketServer server = serverWithCannedData(binary)) {
server.open();
WebSocket.Listener listener = new WebSocket.Listener() {
List<byte[]> collectedBytes = new ArrayList<>();
ByteBuffer binary;
@Override
public CompletionStage<?> onBinary(WebSocket webSocket,
ByteBuffer message,
WebSocket.MessagePart part) {
System.out.printf("onBinary(%s, %s)%n", message, part);
webSocket.request(1);
byte[] bytes = null;
switch (part) {
case FIRST:
binary = ByteBuffer.allocate(message.remaining() * 2);
case PART:
append(message);
return null;
case LAST:
append(message);
binary.flip();
bytes = new byte[binary.remaining()];
binary.get(bytes);
binary.clear();
break;
case WHOLE:
bytes = new byte[message.remaining()];
message.get(bytes);
break;
}
processWholeBinary(bytes);
return null;
}
private void append(ByteBuffer message) {
if (binary.remaining() < message.remaining()) {
assert message.remaining() > 0;
int cap = (binary.capacity() + message.remaining()) * 2;
ByteBuffer b = ByteBuffer.allocate(cap);
b.put(binary.flip());
binary = b;
}
binary.put(message);
}
private void processWholeBinary(byte[] bytes) {
String stringBytes = new String(bytes, StandardCharsets.UTF_8);
System.out.println("processWholeBinary: " + stringBytes);
collectedBytes.add(bytes);
}
@Override
public CompletionStage<?> onClose(WebSocket webSocket,
int statusCode,
String reason) {
actual.complete(collectedBytes);
return null;
}
@Override
public void onError(WebSocket webSocket, Throwable error) {
actual.completeExceptionally(error);
}
};
newHttpClient().newWebSocketBuilder()
.buildAsync(server.getURI(), listener)
.join();
List<byte[]> a = actual.join();
System.out.println("joined");
assertEquals(a, expected);
}
}
@Test
public void simpleAggregatingTextMessages() throws IOException {
List<String> expected = List.of("alpha", "beta", "gamma", "delta");
int[] binary = new int[]{
0x81, 0x05, 0x61, 0x6c, 0x70, 0x68, 0x61, // "alpha"
0x01, 0x02, 0x62, 0x65, // "be
0x80, 0x02, 0x74, 0x61, // ta"
0x01, 0x01, 0x67, // "g
0x00, 0x01, 0x61, // a
0x00, 0x00, //
0x00, 0x00, //
0x00, 0x01, 0x6d, // m
0x00, 0x01, 0x6d, // m
0x80, 0x01, 0x61, // a"
0x8a, 0x00, // <PONG>
0x01, 0x04, 0x64, 0x65, 0x6c, 0x74, // "delt
0x00, 0x01, 0x61, // a
0x80, 0x00, // "
0x88, 0x00 // <CLOSE>
};
CompletableFuture<List<String>> actual = new CompletableFuture<>();
try (DummyWebSocketServer server = serverWithCannedData(binary)) {
server.open();
WebSocket.Listener listener = new WebSocket.Listener() {
List<String> collectedStrings = new ArrayList<>();
StringBuilder text;
@Override
public CompletionStage<?> onText(WebSocket webSocket,
CharSequence message,
WebSocket.MessagePart part) {
System.out.printf("onText(%s, %s)%n", message, part);
webSocket.request(1);
String str = null;
switch (part) {
case FIRST:
text = new StringBuilder(message.length() * 2);
case PART:
text.append(message);
return null;
case LAST:
text.append(message);
str = text.toString();
break;
case WHOLE:
str = message.toString();
break;
}
processWholeText(str);
return null;
}
private void processWholeText(String string) {
System.out.println(string);
collectedStrings.add(string);
}
@Override
public CompletionStage<?> onClose(WebSocket webSocket,
int statusCode,
String reason) {
actual.complete(collectedStrings);
return null;
}
@Override
public void onError(WebSocket webSocket, Throwable error) {
actual.completeExceptionally(error);
}
};
newHttpClient().newWebSocketBuilder()
.buildAsync(server.getURI(), listener)
.join();
List<String> a = actual.join();
assertEquals(a, expected);
}
}
/*
* Exercises the scenario where requests for more messages are made prior to
* completing the returned CompletionStage instances.
*/
@Test
public void aggregatingTextMessages() throws IOException {
List<String> expected = List.of("alpha", "beta", "gamma", "delta");
int[] binary = new int[]{
0x81, 0x05, 0x61, 0x6c, 0x70, 0x68, 0x61, // "alpha"
0x01, 0x02, 0x62, 0x65, // "be
0x80, 0x02, 0x74, 0x61, // ta"
0x01, 0x01, 0x67, // "g
0x00, 0x01, 0x61, // a
0x00, 0x00, //
0x00, 0x00, //
0x00, 0x01, 0x6d, // m
0x00, 0x01, 0x6d, // m
0x80, 0x01, 0x61, // a"
0x8a, 0x00, // <PONG>
0x01, 0x04, 0x64, 0x65, 0x6c, 0x74, // "delt
0x00, 0x01, 0x61, // a
0x80, 0x00, // "
0x88, 0x00 // <CLOSE>
};
CompletableFuture<List<String>> actual = new CompletableFuture<>();
try (DummyWebSocketServer server = serverWithCannedData(binary)) {
server.open();
WebSocket.Listener listener = new WebSocket.Listener() {
List<CharSequence> parts;
/*
* A CompletableFuture which will complete once the current
* message has been fully assembled (LAST/WHOLE). Until then
* the listener returns this instance for every call.
*/
CompletableFuture<?> currentCf;
List<String> collected = new ArrayList<>();
@Override
public CompletionStage<?> onText(WebSocket webSocket,
CharSequence message,
WebSocket.MessagePart part) {
switch (part) {
case WHOLE:
CompletableFuture<?> cf = new CompletableFuture<>();
cf.thenRun(() -> webSocket.request(1));
processWholeMessage(List.of(message), cf);
return cf;
case FIRST:
parts = new ArrayList<>();
parts.add(message);
currentCf = new CompletableFuture<>();
currentCf.thenRun(() -> webSocket.request(1));
webSocket.request(1);
break;
case PART:
parts.add(message);
webSocket.request(1);
break;
case LAST:
parts.add(message);
CompletableFuture<?> copyCf = this.currentCf;
processWholeMessage(parts, copyCf);
currentCf = null;
parts = null;
return copyCf;
}
return currentCf;
}
@Override
public CompletionStage<?> onClose(WebSocket webSocket,
int statusCode,
String reason) {
actual.complete(collected);
return null;
}
@Override
public void onError(WebSocket webSocket, Throwable error) {
actual.completeExceptionally(error);
}
public void processWholeMessage(List<CharSequence> data,
CompletableFuture<?> cf) {
StringBuilder b = new StringBuilder();
data.forEach(b::append);
String s = b.toString();
System.out.println(s);
cf.complete(null);
collected.add(s);
}
};
newHttpClient().newWebSocketBuilder()
.buildAsync(server.getURI(), listener)
.join();
List<String> a = actual.join();
assertEquals(a, expected);
}
}
}