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/*
* 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.coyote.http2;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for Section 5.2 of <a href="https://tools.ietf.org/html/rfc7540">RFC 7540</a>. <br>
* The order of tests in this class is aligned with the order of the requirements in the RFC.
*/
public class TestHttp2Section_5_2 extends Http2TestBase {
/*
* Get the connection to a point where 1k of 8k response body has been read and the flow control for the stream has
* no capacity left.
*/
@Override
@Before
public void setUp() throws Exception {
super.setUp();
http2Connect();
// This test uses small window updates that will trigger the excessive
// overhead protection so disable it.
http2Protocol.setOverheadWindowUpdateThreshold(0);
// Set the default window size to 1024 bytes
sendSettings(0, false, new SettingValue(4, 1024));
// Wait for the ack
parser.readFrame();
output.clearTrace();
// Headers + 8k response
sendSimpleGetRequest(3);
// Headers
parser.readFrame();
// First 1k of body
parser.readFrame();
output.clearTrace();
}
@Test
public void testFlowControlLimits01() throws Exception {
readBytes(20);
clearRemainder();
}
@Test
public void testFlowControlLimits02() throws Exception {
readBytes(1);
readBytes(1);
readBytes(1024);
readBytes(1);
clearRemainder();
}
@Test
public void testFlowControlLimits03() throws Exception {
readBytes(8192, 7168);
}
@Test
public void testFlowControlLimits04() throws Exception {
readBytes(7168, 7168, true);
}
private void readBytes(int len) throws Exception {
readBytes(len, len);
}
private void readBytes(int len, int expected) throws Exception {
readBytes(len, expected, len > expected);
}
private void readBytes(int len, int expected, boolean eos) throws Exception {
sendWindowUpdate(3, len);
parser.readFrame();
String expectedTrace = "3-Body-" + expected + "\n";
if (eos) {
expectedTrace += "3-EndOfStream\n";
}
Assert.assertEquals(expectedTrace, output.getTrace());
output.clearTrace();
}
private void clearRemainder() throws Exception {
// Remainder
sendWindowUpdate(3, 8192);
parser.readFrame();
}
}
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