| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.incubator.http.internal.frame; |
| |
| /** |
| * When sending a frame, the length field must be set in sub-class |
| * by calling computeLength() |
| */ |
| public abstract class Http2Frame { |
| |
| public static final int FRAME_HEADER_SIZE = 9; |
| |
| protected int streamid; |
| protected int flags; |
| |
| public Http2Frame(int streamid, int flags) { |
| this.streamid = streamid; |
| this.flags = flags; |
| } |
| |
| public int streamid() { |
| return streamid; |
| } |
| |
| public void setFlag(int flag) { |
| flags |= flag; |
| } |
| |
| public void setFlags(int flags) { |
| this.flags = flags; |
| } |
| |
| public int getFlags() { |
| return flags; |
| } |
| |
| public boolean getFlag(int flag) { |
| return (flags & flag) != 0; |
| } |
| |
| public void clearFlag(int flag) { |
| flags &= 0xffffffff ^ flag; |
| } |
| |
| public void streamid(int streamid) { |
| this.streamid = streamid; |
| } |
| |
| |
| public String typeAsString() { |
| return asString(type()); |
| } |
| |
| public int type() { |
| return -1; // Unknown type |
| } |
| |
| int length() { |
| return -1; // Unknown length |
| } |
| |
| |
| public static String asString(int type) { |
| switch (type) { |
| case DataFrame.TYPE: |
| return "DATA"; |
| case HeadersFrame.TYPE: |
| return "HEADERS"; |
| case ContinuationFrame.TYPE: |
| return "CONTINUATION"; |
| case ResetFrame.TYPE: |
| return "RESET"; |
| case PriorityFrame.TYPE: |
| return "PRIORITY"; |
| case SettingsFrame.TYPE: |
| return "SETTINGS"; |
| case GoAwayFrame.TYPE: |
| return "GOAWAY"; |
| case PingFrame.TYPE: |
| return "PING"; |
| case PushPromiseFrame.TYPE: |
| return "PUSH_PROMISE"; |
| case WindowUpdateFrame.TYPE: |
| return "WINDOW_UPDATE"; |
| default: |
| return "UNKNOWN"; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(typeAsString()) |
| .append(": length=") |
| .append(Integer.toString(length())) |
| .append(", streamid=") |
| .append(streamid) |
| .append(", flags="); |
| |
| int f = flags; |
| int i = 0; |
| if (f == 0) { |
| sb.append("0 "); |
| } else { |
| while (f != 0) { |
| if ((f & 1) == 1) { |
| sb.append(flagAsString(1 << i)) |
| .append(' '); |
| } |
| f = f >> 1; |
| i++; |
| } |
| } |
| return sb.toString(); |
| } |
| |
| // Override |
| public String flagAsString(int f) { |
| return "unknown"; |
| } |
| |
| } |