Android example source code file (SSLSessionCache.java)

This example Android source code file (SSLSessionCache.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, content, file, io, ioexception, ssl, sslclientsessioncache, sslsessioncache, string, tag, unable, util, utilities, utils

The SSLSessionCache.java Android example source code

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.net;

import org.apache.harmony.xnet.provider.jsse.FileClientSessionCache;
import org.apache.harmony.xnet.provider.jsse.SSLClientSessionCache;

import android.content.Context;
import android.util.Log;

import java.io.File;
import java.io.IOException;

/**
 * File-based cache of established SSL sessions.  When re-establishing a
 * connection to the same server, using an SSL session cache can save some time,
 * power, and bandwidth by skipping directly to an encrypted stream.
 * This is a persistent cache which can span executions of the application.
 *
 * @see SSLCertificateSocketFactory
 */
public final class SSLSessionCache {
    private static final String TAG = "SSLSessionCache";
    /* package */ final SSLClientSessionCache mSessionCache;

    /**
     * Create a session cache using the specified directory.
     * Individual session entries will be files within the directory.
     * Multiple instances for the same directory share data internally.
     *
     * @param dir to store session files in (created if necessary)
     * @throws IOException if the cache can't be opened
     */
    public SSLSessionCache(File dir) throws IOException {
        mSessionCache = FileClientSessionCache.usingDirectory(dir);
    }

    /**
     * Create a session cache at the default location for this app.
     * Multiple instances share data internally.
     *
     * @param context for the application
     */
    public SSLSessionCache(Context context) {
        File dir = context.getDir("sslcache", Context.MODE_PRIVATE);
        SSLClientSessionCache cache = null;
        try {
            cache = FileClientSessionCache.usingDirectory(dir);
        } catch (IOException e) {
            Log.w(TAG, "Unable to create SSL session cache in " + dir, e);
        }
        mSessionCache = cache;
    }
}