--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/ssl/Record.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,90 @@
+/*
+ * Copyright 1996-2007 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+package sun.security.ssl;
+
+
+/**
+ * SSL/TLS records, as pulled off (and put onto) a TCP stream.  This is
+ * the base interface, which defines common information and interfaces
+ * used by both Input and Output records.
+ *
+ * @author David Brownell
+ */
+interface Record {
+    /*
+     * There are four SSL record types, which are part of the interface
+     * to this level (along with the maximum record size)
+     *
+     * enum { change_cipher_spec(20), alert(21), handshake(22),
+     *      application_data(23), (255) } ContentType;
+     */
+    static final byte   ct_change_cipher_spec = 20;
+    static final byte   ct_alert = 21;
+    static final byte   ct_handshake = 22;
+    static final byte   ct_application_data = 23;
+
+    static final int            headerSize = 5;         // SSLv3 record header
+    static final int            maxExpansion = 1024;    // for bad compression
+    static final int            trailerSize = 20;       // SHA1 hash size
+    static final int            maxDataSize = 16384;    // 2^14 bytes of data
+    static final int            maxPadding = 256;       // block cipher padding
+
+    /*
+     * SSL has a maximum record size.  It's header, (compressed) data,
+     * padding, and a trailer for the MAC.
+     * Some compression algorithms have rare cases where they expand the data.
+     * As we don't support compression at this time, leave that out.
+     */
+    static final int            maxRecordSize =
+                                      headerSize        // header
+                                    + maxDataSize       // data
+                                    + maxPadding        // padding
+                                    + trailerSize;      // MAC
+
+    /*
+     * The maximum large record size.
+     *
+     * Some SSL/TLS implementations support large fragment upto 2^15 bytes,
+     * such as Microsoft. We support large incoming fragments.
+     *
+     * The maximum large record size is defined as maxRecordSize plus 2^14,
+     * this is the amount OpenSSL is using.
+     */
+    static final int            maxLargeRecordSize =
+                maxRecordSize   // Max size with a conforming implemenation
+              + maxDataSize;    // extra 2^14 bytes for large data packets.
+
+
+    /*
+     * Maximum record size for alert and change cipher spec records.
+     * They only contain 2 and 1 bytes of data, respectively.
+     * Allocate a smaller array.
+     */
+    static final int maxAlertRecordSize =
+                        headerSize + 2 + maxPadding + trailerSize;
+
+}