Neil Fuller | 8bced3e | 2014-09-11 10:45:54 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
| 3 | * contributor license agreements. See the NOTICE file distributed with |
| 4 | * this work for additional information regarding copyright ownership. |
| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
| 6 | * (the "License"); you may not use this file except in compliance with |
| 7 | * the License. You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
Tobias Thierer | 08635e6 | 2017-08-29 19:34:12 +0100 | [diff] [blame^] | 18 | package com.squareup.okhttp; |
Neil Fuller | 8bced3e | 2014-09-11 10:45:54 +0100 | [diff] [blame] | 19 | |
| 20 | import libcore.net.event.NetworkEventDispatcher; |
| 21 | import libcore.net.event.NetworkEventListener; |
| 22 | |
| 23 | /** |
| 24 | * A provider of the shared Android {@link ConnectionPool}. This class is aware of network |
| 25 | * configuration change events: When the network configuration changes the pool object is discarded |
| 26 | * and a later calls to {@link #get()} will return a new pool. |
| 27 | */ |
| 28 | public class ConfigAwareConnectionPool { |
| 29 | |
| 30 | private static final long CONNECTION_POOL_DEFAULT_KEEP_ALIVE_DURATION_MS = 5 * 60 * 1000; // 5 min |
| 31 | |
| 32 | private static final int CONNECTION_POOL_MAX_IDLE_CONNECTIONS; |
| 33 | private static final long CONNECTION_POOL_KEEP_ALIVE_DURATION_MS; |
| 34 | static { |
| 35 | String keepAliveProperty = System.getProperty("http.keepAlive"); |
| 36 | String keepAliveDurationProperty = System.getProperty("http.keepAliveDuration"); |
| 37 | String maxIdleConnectionsProperty = System.getProperty("http.maxConnections"); |
| 38 | CONNECTION_POOL_KEEP_ALIVE_DURATION_MS = (keepAliveDurationProperty != null |
| 39 | ? Long.parseLong(keepAliveDurationProperty) |
| 40 | : CONNECTION_POOL_DEFAULT_KEEP_ALIVE_DURATION_MS); |
| 41 | if (keepAliveProperty != null && !Boolean.parseBoolean(keepAliveProperty)) { |
| 42 | CONNECTION_POOL_MAX_IDLE_CONNECTIONS = 0; |
| 43 | } else if (maxIdleConnectionsProperty != null) { |
| 44 | CONNECTION_POOL_MAX_IDLE_CONNECTIONS = Integer.parseInt(maxIdleConnectionsProperty); |
| 45 | } else { |
| 46 | CONNECTION_POOL_MAX_IDLE_CONNECTIONS = 5; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | private static final ConfigAwareConnectionPool instance = new ConfigAwareConnectionPool(); |
| 51 | |
| 52 | private final NetworkEventDispatcher networkEventDispatcher; |
| 53 | |
| 54 | /** |
| 55 | * {@code true} if the ConnectionPool reset has been registered with the |
| 56 | * {@link NetworkEventDispatcher}. |
| 57 | */ |
| 58 | private boolean networkEventListenerRegistered; |
| 59 | |
| 60 | private ConnectionPool connectionPool; |
| 61 | |
| 62 | /** Visible for testing. Use {@link #getInstance()} */ |
| 63 | protected ConfigAwareConnectionPool(NetworkEventDispatcher networkEventDispatcher) { |
| 64 | this.networkEventDispatcher = networkEventDispatcher; |
| 65 | } |
| 66 | |
| 67 | private ConfigAwareConnectionPool() { |
| 68 | networkEventDispatcher = NetworkEventDispatcher.getInstance(); |
| 69 | } |
| 70 | |
| 71 | public static ConfigAwareConnectionPool getInstance() { |
| 72 | return instance; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Returns the current {@link ConnectionPool} to use. |
| 77 | */ |
| 78 | public synchronized ConnectionPool get() { |
| 79 | if (connectionPool == null) { |
| 80 | // Only register the listener once the first time a ConnectionPool is created. |
| 81 | if (!networkEventListenerRegistered) { |
| 82 | networkEventDispatcher.addListener(new NetworkEventListener() { |
| 83 | @Override |
| 84 | public void onNetworkConfigurationChanged() { |
| 85 | synchronized (ConfigAwareConnectionPool.this) { |
| 86 | // If the network config has changed then existing pooled connections should not be |
| 87 | // re-used. By setting connectionPool to null it ensures that the next time |
| 88 | // getConnectionPool() is called a new pool will be created. |
| 89 | connectionPool = null; |
Neil Fuller | 8bced3e | 2014-09-11 10:45:54 +0100 | [diff] [blame] | 90 | } |
| 91 | } |
| 92 | }); |
| 93 | networkEventListenerRegistered = true; |
| 94 | } |
| 95 | connectionPool = new ConnectionPool( |
| 96 | CONNECTION_POOL_MAX_IDLE_CONNECTIONS, CONNECTION_POOL_KEEP_ALIVE_DURATION_MS); |
| 97 | } |
| 98 | return connectionPool; |
| 99 | } |
| 100 | } |