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src/java.base/share/classes/sun/security/ssl/DTLSInputRecord.java

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   1 /*
   2  * Copyright (c) 2015, 2019, 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 9406+5 USA
  22  * or visit www.oracle.com if you need additional information or have any


  41 
  42 /**
  43  * DTLS {@code InputRecord} implementation for {@code SSLEngine}.
  44  */
  45 final class DTLSInputRecord extends InputRecord implements DTLSRecord {
  46     private DTLSReassembler reassembler = null;
  47     private int             readEpoch;
  48 
  49     DTLSInputRecord(HandshakeHash handshakeHash) {
  50         super(handshakeHash, SSLReadCipher.nullDTlsReadCipher());
  51         this.readEpoch = 0;
  52     }
  53 
  54     @Override
  55     void changeReadCiphers(SSLReadCipher readCipher) {
  56         this.readCipher = readCipher;
  57         this.readEpoch++;
  58     }
  59 
  60     @Override
  61     public void close() throws IOException {
  62         if (!isClosed) {
  63             super.close();
  64         }
  65     }
  66 
  67     @Override
  68     boolean isEmpty() {
  69         return ((reassembler == null) || reassembler.isEmpty());
  70     }
  71 
  72     @Override
  73     int estimateFragmentSize(int packetSize) {
  74         if (packetSize > 0) {
  75             return readCipher.estimateFragmentSize(packetSize, headerSize);
  76         } else {
  77             return Record.maxDataSize;
  78         }
  79     }
  80 
  81     @Override


   1 /*
   2  * Copyright (c) 2015, 2018, 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 9406+5 USA
  22  * or visit www.oracle.com if you need additional information or have any


  41 
  42 /**
  43  * DTLS {@code InputRecord} implementation for {@code SSLEngine}.
  44  */
  45 final class DTLSInputRecord extends InputRecord implements DTLSRecord {
  46     private DTLSReassembler reassembler = null;
  47     private int             readEpoch;
  48 
  49     DTLSInputRecord(HandshakeHash handshakeHash) {
  50         super(handshakeHash, SSLReadCipher.nullDTlsReadCipher());
  51         this.readEpoch = 0;
  52     }
  53 
  54     @Override
  55     void changeReadCiphers(SSLReadCipher readCipher) {
  56         this.readCipher = readCipher;
  57         this.readEpoch++;
  58     }
  59 
  60     @Override
  61     public synchronized void close() throws IOException {
  62         if (!isClosed) {
  63             super.close();
  64         }
  65     }
  66 
  67     @Override
  68     boolean isEmpty() {
  69         return ((reassembler == null) || reassembler.isEmpty());
  70     }
  71 
  72     @Override
  73     int estimateFragmentSize(int packetSize) {
  74         if (packetSize > 0) {
  75             return readCipher.estimateFragmentSize(packetSize, headerSize);
  76         } else {
  77             return Record.maxDataSize;
  78         }
  79     }
  80 
  81     @Override


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