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 */ 24 25 package java.net.http; 26 27 import java.io.IOException; 28 import java.nio.ByteBuffer; 29 30 class GoAwayFrame extends ErrorFrame { 31 32 GoAwayFrame() { 33 type = TYPE; 34 } 35 36 int lastStream; 37 byte[] debugData = new byte[0]; 38 39 public static final int TYPE = 0x7; 40 41 // Flags 42 public static final int ACK = 0x1; 43 44 public void setDebugData(byte[] debugData) { 45 this.debugData = debugData; 46 } 47 48 @Override 49 public String toString() { 50 return super.toString() + " Debugdata: " + new String(debugData); 51 } 52 53 @Override 54 String flagAsString(int flag) { 55 switch (flag) { 56 case ACK: 57 return "ACK"; 58 } 59 return super.flagAsString(flag); 60 } 61 62 public void setLastStream(int lastStream) { 63 this.lastStream = lastStream; 64 } 65 66 public int getLastStream() { 67 return this.lastStream; 68 } 69 70 public byte[] getDebugData() { 71 return debugData; 72 } 73 74 @Override 75 void readIncomingImpl(ByteBufferConsumer bc) throws IOException { 76 if (length < 8) { 77 throw new IOException("Invalid GoAway frame"); 78 } 79 lastStream = bc.getInt() & 0x7fffffff; 80 errorCode = bc.getInt(); 81 //debugData = bc.getBytes(8); 82 int datalen = length - 8; 83 if (datalen > 0) { 84 debugData = bc.getBytes(datalen); 85 Log.logError("GoAway debugData " + new String(debugData)); 86 } 87 } 88 89 @Override 90 void writeOutgoing(ByteBufferGenerator bg) { 91 super.writeOutgoing(bg); 92 ByteBuffer buf = bg.getBuffer(length); 93 buf.putInt(lastStream); 94 buf.putInt(errorCode); 95 if (length > 8) { 96 buf.put(debugData); 97 } 98 } 99 100 @Override 101 void computeLength() { 102 length = 8 + debugData.length; 103 } 104 }