com.predic8.membrane.core.transport.http2.frame.WindowUpdateFrame 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;
public class WindowUpdateFrame {
private final Frame frame;
public WindowUpdateFrame(Frame frame) {
this.frame = frame;
}
public int getWindowSizeIncrement() {
return
(frame.content[0] & 0x7F) << 24 |
(frame.content[1] & 0xFF) << 16 |
(frame.content[2] & 0xFF) << 8 |
(frame.content[3] & 0xFF);
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("WindowUpdate {\n");
sb.append(" streamId = " + frame.streamId);
sb.append("\n windowUpdate = ");
sb.append(getWindowSizeIncrement());
sb.append("\n");
sb.append("}");
return sb.toString();
}
public Frame getFrame() {
return frame;
}
public static Frame inc(int streamId, int value) {
Frame frame = new Frame();
byte[] buf = new byte[4];
buf[0] = (byte)(value >> 24 & 0x7F);
buf[1] = (byte)(value >> 16 & 0xFF);
buf[2] = (byte)(value >> 8 & 0xFF);
buf[3] = (byte)(value & 0xFF);
frame.fill(Frame.TYPE_WINDOW_UPDATE, 0, streamId, buf, 0, 4);
return frame;
}
}