1 /* 2 * Copyright (c) 2015, 2016, 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 java.net.http; 27 28 import java.io.IOException; 29 import java.nio.ByteBuffer; 30 31 class GoAwayFrame extends ErrorFrame { 32 33 GoAwayFrame() { 34 type = TYPE; 35 } 36 37 int lastStream; 38 byte[] debugData = new byte[0]; 39 40 public static final int TYPE = 0x7; 41 42 // Flags 43 public static final int ACK = 0x1; 44 45 public void setDebugData(byte[] debugData) { 46 this.debugData = debugData; 47 } 48 49 @Override 50 public String toString() { 51 return super.toString() + " Debugdata: " + new String(debugData); 52 } 53 54 @Override 55 String flagAsString(int flag) { 56 switch (flag) { 57 case ACK: 58 return "ACK"; 59 } 60 return super.flagAsString(flag); 61 } 62 63 public void setLastStream(int lastStream) { 64 this.lastStream = lastStream; 65 } 66 67 public int getLastStream() { 68 return this.lastStream; 69 } 70 71 public byte[] getDebugData() { 72 return debugData; 73 } 74 75 @Override 76 void readIncomingImpl(ByteBufferConsumer bc) throws IOException { 77 if (length < 8) { 78 throw new IOException("Invalid GoAway frame"); 79 } 80 lastStream = bc.getInt() & 0x7fffffff; 81 errorCode = bc.getInt(); 82 //debugData = bc.getBytes(8); 83 int datalen = length - 8; 84 if (datalen > 0) { 85 debugData = bc.getBytes(datalen); 86 Log.logError("GoAway debugData " + new String(debugData)); 87 } 88 } 89 90 @Override 91 void writeOutgoing(ByteBufferGenerator bg) { 92 super.writeOutgoing(bg); 93 ByteBuffer buf = bg.getBuffer(length); 94 buf.putInt(lastStream); 95 buf.putInt(errorCode); 96 if (length > 8) { 97 buf.put(debugData); 98 } 99 } 100 101 @Override 102 void computeLength() { 103 length = 8 + debugData.length; 104 } 105 }