Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.net; |
| 18 | |
| 19 | import org.apache.harmony.xnet.provider.jsse.FileClientSessionCache; |
| 20 | import org.apache.harmony.xnet.provider.jsse.SSLClientSessionCache; |
| 21 | |
| 22 | import android.content.Context; |
| 23 | import android.util.Log; |
| 24 | |
| 25 | import java.io.File; |
| 26 | import java.io.IOException; |
| 27 | |
| 28 | /** |
| 29 | * File-based cache of established SSL sessions. When re-establishing a |
| 30 | * connection to the same server, using an SSL session cache can save some time, |
| 31 | * power, and bandwidth by skipping directly to an encrypted stream. |
| 32 | * This is a persistent cache which can span executions of the application. |
| 33 | * |
| 34 | * @see SSLCertificateSocketFactory |
| 35 | */ |
| 36 | public final class SSLSessionCache { |
| 37 | private static final String TAG = "SSLSessionCache"; |
| 38 | /* package */ final SSLClientSessionCache mSessionCache; |
| 39 | |
| 40 | /** |
| 41 | * Create a session cache using the specified directory. |
| 42 | * Individual session entries will be files within the directory. |
| 43 | * Multiple instances for the same directory share data internally. |
| 44 | * |
| 45 | * @param dir to store session files in (created if necessary) |
| 46 | * @throws IOException if the cache can't be opened |
| 47 | */ |
| 48 | public SSLSessionCache(File dir) throws IOException { |
| 49 | mSessionCache = FileClientSessionCache.usingDirectory(dir); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Create a session cache at the default location for this app. |
| 54 | * Multiple instances share data internally. |
| 55 | * |
| 56 | * @param context for the application |
| 57 | */ |
| 58 | public SSLSessionCache(Context context) { |
| 59 | File dir = context.getDir("sslcache", Context.MODE_PRIVATE); |
| 60 | SSLClientSessionCache cache = null; |
| 61 | try { |
| 62 | cache = FileClientSessionCache.usingDirectory(dir); |
| 63 | } catch (IOException e) { |
| 64 | Log.w(TAG, "Unable to create SSL session cache in " + dir, e); |
| 65 | } |
| 66 | mSessionCache = cache; |
| 67 | } |
| 68 | } |