1 /* 2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.incubator.http.internal.frame; 27 28 import jdk.incubator.http.internal.common.Utils; 29 30 import java.nio.ByteBuffer; 31 import java.util.List; 32 33 /** 34 * Either a HeadersFrame or a ContinuationFrame 35 */ 36 public abstract class HeaderFrame extends Http2Frame { 37 38 final int headerLength; 39 final List<ByteBuffer> headerBlocks; 40 41 public static final int END_STREAM = 0x1; 42 public static final int END_HEADERS = 0x4; 43 44 public HeaderFrame(int streamid, int flags, List<ByteBuffer> headerBlocks) { 45 super(streamid, flags); 46 this.headerBlocks = headerBlocks; 47 this.headerLength = Utils.remaining(headerBlocks, Integer.MAX_VALUE); 48 } 49 50 @Override 51 public String flagAsString(int flag) { 52 switch (flag) { 53 case END_HEADERS: 54 return "END_HEADERS"; 55 case END_STREAM: 56 return "END_STREAM"; 57 } 58 return super.flagAsString(flag); 59 } 60 61 62 public List<ByteBuffer> getHeaderBlock() { 63 return headerBlocks; 64 } 65 66 int getHeaderLength() { 67 return headerLength; 68 } 69 70 /** 71 * Returns true if this block is the final block of headers. 72 */ 73 public boolean endHeaders() { 74 return getFlag(END_HEADERS); 75 } 76 }