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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 System.err.println(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 setLength() {
102 length = 8 + debugData.length;
103 }
104 }
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