com.predic8.membrane.core.transport.http2.frame.PriorityFrame Maven / Gradle / Ivy
/* Copyright 2020 predic8 GmbH, www.predic8.com
Licensed 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 com.predic8.membrane.core.transport.http2.frame;
import java.io.IOException;
public class PriorityFrame {
private final Frame frame;
private final boolean exclusive;
private final int streamDependency;
private final int weight;
public PriorityFrame(Frame frame) {
this.frame = frame;
exclusive = (frame.content[0] & 0x80) != 0;
streamDependency = (frame.content[0] & 0x7F) << 24 |
(frame.content[1] & 0xFF) << 16 |
(frame.content[2] & 0xFF) << 8 |
frame.content[3] & 0xFF;
weight = (frame.content[4] & 0xFF) + 1;
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("Priority {\n");
if (exclusive)
sb.append(" exclusive,\n");
sb.append(" weight = ");
sb.append(weight);
sb.append(",\n streamDependency = ");
sb.append(streamDependency);
sb.append("\n");
sb.append("}");
return sb.toString();
}
public Frame getFrame() {
return frame;
}
public int getWeight() {
return weight;
}
public int getStreamDependency() {
return streamDependency;
}
public boolean isExclusive() {
return exclusive;
}
public void validateSize() throws IOException {
if (frame.length != 5)
throw new FatalConnectionException(Error.ERROR_FRAME_SIZE_ERROR); // TODO: switch this into a stream error
}
}