author | xuelei |
Thu, 29 Nov 2018 08:43:12 -0800 | |
changeset 52764 | 8a85d21d9616 |
parent 47216 | 71c04702a3d5 |
child 57485 | af4b0fc25bc4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.net.ssl; |
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import java.util.Enumeration; |
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/** |
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* A <code>SSLSessionContext</code> represents a set of |
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* <code>SSLSession</code>s associated with a single entity. For example, |
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* it could be associated with a server or client who participates in many |
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* sessions concurrently. |
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* <p> |
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* Not all environments will contain session contexts. |
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* <p> |
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* There are <code>SSLSessionContext</code> parameters that affect how |
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* sessions are stored: |
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* <UL> |
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* <LI>Sessions can be set to expire after a specified |
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* time limit. |
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* <LI>The number of sessions that can be stored in context |
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* can be limited. |
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* </UL> |
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* A session can be retrieved based on its session id, and all session id's |
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* in a <code>SSLSessionContext</code> can be listed. |
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* |
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* @see SSLSession |
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* |
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* @since 1.4 |
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* @author Nathan Abramson |
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* @author David Brownell |
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*/ |
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public interface SSLSessionContext { |
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/** |
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* Returns the <code>SSLSession</code> bound to the specified session id. |
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* |
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* @param sessionId the Session identifier |
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* @return the <code>SSLSession</code> or null if |
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* the specified session id does not refer to a valid SSLSession. |
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* |
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* @throws NullPointerException if <code>sessionId</code> is null. |
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*/ |
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public SSLSession getSession(byte[] sessionId); |
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/** |
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* Returns an Enumeration of all session id's grouped under this |
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* <code>SSLSessionContext</code>. |
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* |
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* @return an enumeration of all the Session id's |
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*/ |
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public Enumeration<byte[]> getIds(); |
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/** |
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* Sets the timeout limit for <code>SSLSession</code> objects grouped |
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* under this <code>SSLSessionContext</code>. |
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* <p> |
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* If the timeout limit is set to 't' seconds, a session exceeds the |
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* timeout limit 't' seconds after its creation time. |
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* When the timeout limit is exceeded for a session, the |
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* <code>SSLSession</code> object is invalidated and future connections |
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* cannot resume or rejoin the session. |
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* A check for sessions exceeding the timeout is made immediately whenever |
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* the timeout limit is changed for this <code>SSLSessionContext</code>. |
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* |
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* @apiNote Note that the JDK Implementation uses default values for both |
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* the session cache size and timeout. See |
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* {@code getSessionCacheSize} and {@code getSessionTimeout} for |
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* more information. Applications should consider their |
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* performance requirements and override the defaults if necessary. |
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* |
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* @param seconds the new session timeout limit in seconds; zero means |
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* there is no limit. |
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* |
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* @throws IllegalArgumentException if the timeout specified is {@code < 0}. |
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* |
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* @see #getSessionTimeout |
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*/ |
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public void setSessionTimeout(int seconds) |
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throws IllegalArgumentException; |
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/** |
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* Returns the timeout limit of <code>SSLSession</code> objects grouped |
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* under this <code>SSLSessionContext</code>. |
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* <p> |
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* If the timeout limit is set to 't' seconds, a session exceeds the |
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* timeout limit 't' seconds after its creation time. |
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* When the timeout limit is exceeded for a session, the |
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* <code>SSLSession</code> object is invalidated and future connections |
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* cannot resume or rejoin the session. |
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* A check for sessions exceeding the timeout limit is made immediately |
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* whenever the timeout limit is changed for this |
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* <code>SSLSessionContext</code>. |
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* |
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* @implNote The JDK implementation returns the session timeout as set by |
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* the {@code setSessionTimeout} method, or if not set, a default |
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* value of 86400 seconds (24 hours). |
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* |
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* @return the session timeout limit in seconds; zero means there is no |
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* limit. |
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* |
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* @see #setSessionTimeout |
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*/ |
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public int getSessionTimeout(); |
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/** |
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* Sets the size of the cache used for storing <code>SSLSession</code> |
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* objects grouped under this <code>SSLSessionContext</code>. |
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* |
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* @apiNote Note that the JDK Implementation uses default values for both |
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* the session cache size and timeout. See |
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* {@code getSessionCacheSize} and {@code getSessionTimeout} for |
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* more information. Applications should consider their |
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* performance requirements and override the defaults if necessary. |
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* |
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* @param size the new session cache size limit; zero means there is no |
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* limit. |
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* |
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* @throws IllegalArgumentException if the specified size is {@code < 0}. |
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* |
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* @see #getSessionCacheSize |
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*/ |
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public void setSessionCacheSize(int size) |
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throws IllegalArgumentException; |
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/** |
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* Returns the size of the cache used for storing <code>SSLSession</code> |
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* objects grouped under this <code>SSLSessionContext</code>. |
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* |
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* @implNote The JDK implementation returns the cache size as set by |
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* the {@code setSessionCacheSize} method, or if not set, the |
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* value of the {@systemProperty javax.net.ssl.sessionCacheSize} |
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* system property. If neither is set, it returns a default |
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* value of 20480. |
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* |
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* @return size of the session cache; zero means there is no size limit. |
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* |
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* @see #setSessionCacheSize |
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*/ |
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public int getSessionCacheSize(); |
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} |