| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tomcat.websocket; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import javax.websocket.Extension; |
| import javax.websocket.Extension.Parameter; |
| |
| import org.junit.Test; |
| |
| public class TestPerMessageDeflate { |
| |
| /* |
| * https://bz.apache.org/bugzilla/show_bug.cgi?id=61491 |
| */ |
| @Test |
| public void testSendEmptyMessagePartWithContextTakeover() { |
| |
| // Set up the extension using defaults |
| List<Parameter> parameters = Collections.emptyList(); |
| List<List<Parameter>> preferences = new ArrayList<>(); |
| preferences.add(parameters); |
| |
| PerMessageDeflate perMessageDeflate = PerMessageDeflate.negotiate(preferences, true); |
| perMessageDeflate.setNext(new TesterTransformation()); |
| |
| ByteBuffer bb1 = ByteBuffer.wrap("A".getBytes(StandardCharsets.UTF_8)); |
| MessagePart mp1 = new MessagePart(true, 0, Constants.OPCODE_TEXT, bb1, null, null); |
| |
| List<MessagePart> uncompressedParts1 = new ArrayList<>(); |
| uncompressedParts1.add(mp1); |
| perMessageDeflate.sendMessagePart(uncompressedParts1); |
| |
| ByteBuffer bb2 = ByteBuffer.wrap("".getBytes(StandardCharsets.UTF_8)); |
| MessagePart mp2 = new MessagePart(true, 0, Constants.OPCODE_TEXT, bb2, null, null); |
| |
| List<MessagePart> uncompressedParts2 = new ArrayList<>(); |
| uncompressedParts2.add(mp2); |
| perMessageDeflate.sendMessagePart(uncompressedParts2); |
| } |
| |
| |
| /* |
| * Minimal implementation to enable other transformations to be tested. |
| */ |
| private static class TesterTransformation implements Transformation { |
| @Override |
| public boolean validateRsvBits(int i) { |
| return false; |
| } |
| @Override |
| public boolean validateRsv(int rsv, byte opCode) { |
| return false; |
| } |
| @Override |
| public void setNext(Transformation t) { |
| } |
| @Override |
| public List<MessagePart> sendMessagePart(List<MessagePart> messageParts) { |
| return messageParts; |
| } |
| @Override |
| public TransformationResult getMoreData(byte opCode, boolean fin, int rsv, ByteBuffer dest) |
| throws IOException { |
| return null; |
| } |
| @Override |
| public Extension getExtensionResponse() { |
| return null; |
| } |
| @Override |
| public void close() { |
| } |
| } |
| } |