/* * Copyright (C) 2008 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 static com.android.internal.util.Preconditions.checkNotNull; import android.annotation.SdkConstant; import android.annotation.SdkConstant.SdkConstantType; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.net.NetworkUtils; import android.os.Binder; import android.os.Build.VERSION_CODES; import android.os.Bundle; import android.os.Handler; import android.os.HandlerThread; import android.os.IBinder; import android.os.INetworkActivityListener; import android.os.INetworkManagementService; import android.os.Looper; import android.os.Message; import android.os.Messenger; import android.os.RemoteException; import android.os.ServiceManager; import android.provider.Settings; import android.telephony.SubscriptionManager; import android.telephony.TelephonyManager; import android.util.ArrayMap; import android.util.Log; import com.android.internal.telephony.ITelephony; import com.android.internal.telephony.PhoneConstants; import com.android.internal.util.Protocol; import java.net.InetAddress; import java.util.concurrent.atomic.AtomicInteger; import java.util.HashMap; import libcore.net.event.NetworkEventDispatcher; /** * Class that answers queries about the state of network connectivity. It also * notifies applications when network connectivity changes. Get an instance * of this class by calling * {@link android.content.Context#getSystemService(String) Context.getSystemService(Context.CONNECTIVITY_SERVICE)}. *

* The primary responsibilities of this class are to: *

    *
  1. Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)
  2. *
  3. Send broadcast intents when network connectivity changes
  4. *
  5. Attempt to "fail over" to another network when connectivity to a network * is lost
  6. *
  7. Provide an API that allows applications to query the coarse-grained or fine-grained * state of the available networks
  8. *
  9. Provide an API that allows applications to request and select networks for their data * traffic
  10. *
*/ public class ConnectivityManager { private static final String TAG = "ConnectivityManager"; /** * A change in network connectivity has occurred. A default connection has either * been established or lost. The NetworkInfo for the affected network is * sent as an extra; it should be consulted to see what kind of * connectivity event occurred. *

* If this is a connection that was the result of failing over from a * disconnected network, then the FAILOVER_CONNECTION boolean extra is * set to true. *

* For a loss of connectivity, if the connectivity manager is attempting * to connect (or has already connected) to another network, the * NetworkInfo for the new network is also passed as an extra. This lets * any receivers of the broadcast know that they should not necessarily * tell the user that no data traffic will be possible. Instead, the * receiver should expect another broadcast soon, indicating either that * the failover attempt succeeded (and so there is still overall data * connectivity), or that the failover attempt failed, meaning that all * connectivity has been lost. *

* For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY * is set to {@code true} if there are no connected networks at all. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE"; /** * Identical to {@link #CONNECTIVITY_ACTION} broadcast, but sent without any * historic {@link Settings.Global#CONNECTIVITY_CHANGE_DELAY}. * * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String CONNECTIVITY_ACTION_IMMEDIATE = "android.net.conn.CONNECTIVITY_CHANGE_IMMEDIATE"; /** * The lookup key for a {@link NetworkInfo} object. Retrieve with * {@link android.content.Intent#getParcelableExtra(String)}. * * @deprecated Since {@link NetworkInfo} can vary based on UID, applications * should always obtain network information through * {@link #getActiveNetworkInfo()} or * {@link #getAllNetworkInfo()}. * @see #EXTRA_NETWORK_TYPE */ @Deprecated public static final String EXTRA_NETWORK_INFO = "networkInfo"; /** * Network type which triggered a {@link #CONNECTIVITY_ACTION} broadcast. * Can be used with {@link #getNetworkInfo(int)} to get {@link NetworkInfo} * state based on the calling application. * * @see android.content.Intent#getIntExtra(String, int) */ public static final String EXTRA_NETWORK_TYPE = "networkType"; /** * The lookup key for a boolean that indicates whether a connect event * is for a network to which the connectivity manager was failing over * following a disconnect on another network. * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. */ public static final String EXTRA_IS_FAILOVER = "isFailover"; /** * The lookup key for a {@link NetworkInfo} object. This is supplied when * there is another network that it may be possible to connect to. Retrieve with * {@link android.content.Intent#getParcelableExtra(String)}. */ public static final String EXTRA_OTHER_NETWORK_INFO = "otherNetwork"; /** * The lookup key for a boolean that indicates whether there is a * complete lack of connectivity, i.e., no network is available. * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. */ public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity"; /** * The lookup key for a string that indicates why an attempt to connect * to a network failed. The string has no particular structure. It is * intended to be used in notifications presented to users. Retrieve * it with {@link android.content.Intent#getStringExtra(String)}. */ public static final String EXTRA_REASON = "reason"; /** * The lookup key for a string that provides optionally supplied * extra information about the network state. The information * may be passed up from the lower networking layers, and its * meaning may be specific to a particular network type. Retrieve * it with {@link android.content.Intent#getStringExtra(String)}. */ public static final String EXTRA_EXTRA_INFO = "extraInfo"; /** * The lookup key for an int that provides information about * our connection to the internet at large. 0 indicates no connection, * 100 indicates a great connection. Retrieve it with * {@link android.content.Intent#getIntExtra(String, int)}. * {@hide} */ public static final String EXTRA_INET_CONDITION = "inetCondition"; /** * Broadcast action to indicate the change of data activity status * (idle or active) on a network in a recent period. * The network becomes active when data transmission is started, or * idle if there is no data transmission for a period of time. * {@hide} */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_DATA_ACTIVITY_CHANGE = "android.net.conn.DATA_ACTIVITY_CHANGE"; /** * The lookup key for an enum that indicates the network device type on which this data activity * change happens. * {@hide} */ public static final String EXTRA_DEVICE_TYPE = "deviceType"; /** * The lookup key for a boolean that indicates the device is active or not. {@code true} means * it is actively sending or receiving data and {@code false} means it is idle. * {@hide} */ public static final String EXTRA_IS_ACTIVE = "isActive"; /** * The lookup key for a long that contains the timestamp (nanos) of the radio state change. * {@hide} */ public static final String EXTRA_REALTIME_NS = "tsNanos"; /** * Broadcast Action: The setting for background data usage has changed * values. Use {@link #getBackgroundDataSetting()} to get the current value. *

* If an application uses the network in the background, it should listen * for this broadcast and stop using the background data if the value is * {@code false}. *

* * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability * of background data depends on several combined factors, and * this broadcast is no longer sent. Instead, when background * data is unavailable, {@link #getActiveNetworkInfo()} will now * appear disconnected. During first boot after a platform * upgrade, this broadcast will be sent once if * {@link #getBackgroundDataSetting()} was {@code false} before * the upgrade. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) @Deprecated public static final String ACTION_BACKGROUND_DATA_SETTING_CHANGED = "android.net.conn.BACKGROUND_DATA_SETTING_CHANGED"; /** * Broadcast Action: The network connection may not be good * uses {@code ConnectivityManager.EXTRA_INET_CONDITION} and * {@code ConnectivityManager.EXTRA_NETWORK_INFO} to specify * the network and it's condition. * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String INET_CONDITION_ACTION = "android.net.conn.INET_CONDITION_ACTION"; /** * Broadcast Action: A tetherable connection has come or gone. * Uses {@code ConnectivityManager.EXTRA_AVAILABLE_TETHER}, * {@code ConnectivityManager.EXTRA_ACTIVE_TETHER} and * {@code ConnectivityManager.EXTRA_ERRORED_TETHER} to indicate * the current state of tethering. Each include a list of * interface names in that state (may be empty). * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_TETHER_STATE_CHANGED = "android.net.conn.TETHER_STATE_CHANGED"; /** * @hide * gives a String[] listing all the interfaces configured for * tethering and currently available for tethering. */ public static final String EXTRA_AVAILABLE_TETHER = "availableArray"; /** * @hide * gives a String[] listing all the interfaces currently tethered * (ie, has dhcp support and packets potentially forwarded/NATed) */ public static final String EXTRA_ACTIVE_TETHER = "activeArray"; /** * @hide * gives a String[] listing all the interfaces we tried to tether and * failed. Use {@link #getLastTetherError} to find the error code * for any interfaces listed here. */ public static final String EXTRA_ERRORED_TETHER = "erroredArray"; /** * Broadcast Action: The captive portal tracker has finished its test. * Sent only while running Setup Wizard, in lieu of showing a user * notification. * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_CAPTIVE_PORTAL_TEST_COMPLETED = "android.net.conn.CAPTIVE_PORTAL_TEST_COMPLETED"; /** * The lookup key for a boolean that indicates whether a captive portal was detected. * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. * @hide */ public static final String EXTRA_IS_CAPTIVE_PORTAL = "captivePortal"; /** * The absence of a connection type. * @hide */ public static final int TYPE_NONE = -1; /** * The Mobile data connection. When active, all data traffic * will use this network type's interface by default * (it has a default route) */ public static final int TYPE_MOBILE = 0; /** * The WIFI data connection. When active, all data traffic * will use this network type's interface by default * (it has a default route). */ public static final int TYPE_WIFI = 1; /** * An MMS-specific Mobile data connection. This network type may use the * same network interface as {@link #TYPE_MOBILE} or it may use a different * one. This is used by applications needing to talk to the carrier's * Multimedia Messaging Service servers. */ public static final int TYPE_MOBILE_MMS = 2; /** * A SUPL-specific Mobile data connection. This network type may use the * same network interface as {@link #TYPE_MOBILE} or it may use a different * one. This is used by applications needing to talk to the carrier's * Secure User Plane Location servers for help locating the device. */ public static final int TYPE_MOBILE_SUPL = 3; /** * A DUN-specific Mobile data connection. This network type may use the * same network interface as {@link #TYPE_MOBILE} or it may use a different * one. This is sometimes by the system when setting up an upstream connection * for tethering so that the carrier is aware of DUN traffic. */ public static final int TYPE_MOBILE_DUN = 4; /** * A High Priority Mobile data connection. This network type uses the * same network interface as {@link #TYPE_MOBILE} but the routing setup * is different. Only requesting processes will have access to the * Mobile DNS servers and only IP's explicitly requested via {@link #requestRouteToHost} * will route over this interface if no default route exists. */ public static final int TYPE_MOBILE_HIPRI = 5; /** * The WiMAX data connection. When active, all data traffic * will use this network type's interface by default * (it has a default route). */ public static final int TYPE_WIMAX = 6; /** * The Bluetooth data connection. When active, all data traffic * will use this network type's interface by default * (it has a default route). */ public static final int TYPE_BLUETOOTH = 7; /** * Dummy data connection. This should not be used on shipping devices. */ public static final int TYPE_DUMMY = 8; /** * The Ethernet data connection. When active, all data traffic * will use this network type's interface by default * (it has a default route). */ public static final int TYPE_ETHERNET = 9; /** * Over the air Administration. * {@hide} */ public static final int TYPE_MOBILE_FOTA = 10; /** * IP Multimedia Subsystem. * {@hide} */ public static final int TYPE_MOBILE_IMS = 11; /** * Carrier Branded Services. * {@hide} */ public static final int TYPE_MOBILE_CBS = 12; /** * A Wi-Fi p2p connection. Only requesting processes will have access to * the peers connected. * {@hide} */ public static final int TYPE_WIFI_P2P = 13; /** * The network to use for initially attaching to the network * {@hide} */ public static final int TYPE_MOBILE_IA = 14; /** * Emergency PDN connection for emergency calls * {@hide} */ public static final int TYPE_MOBILE_EMERGENCY = 15; /** * The network that uses proxy to achieve connectivity. * {@hide} */ public static final int TYPE_PROXY = 16; /** * A virtual network using one or more native bearers. * It may or may not be providing security services. */ public static final int TYPE_VPN = 17; /** {@hide} */ public static final int MAX_RADIO_TYPE = TYPE_VPN; /** {@hide} */ public static final int MAX_NETWORK_TYPE = TYPE_VPN; /** * If you want to set the default network preference,you can directly * change the networkAttributes array in framework's config.xml. * * @deprecated Since we support so many more networks now, the single * network default network preference can't really express * the hierarchy. Instead, the default is defined by the * networkAttributes in config.xml. You can determine * the current value by calling {@link #getNetworkPreference()} * from an App. */ @Deprecated public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI; /** * @hide */ public final static int REQUEST_ID_UNSET = 0; /** * A NetID indicating no Network is selected. * Keep in sync with bionic/libc/dns/include/resolv_netid.h * @hide */ public static final int NETID_UNSET = 0; private final IConnectivityManager mService; /** * A kludge to facilitate static access where a Context pointer isn't available, like in the * case of the static set/getProcessDefaultNetwork methods and from the Network class. * TODO: Remove this after deprecating the static methods in favor of non-static methods or * methods that take a Context argument. */ private static ConnectivityManager sInstance; private INetworkManagementService mNMService; /** * Tests if a given integer represents a valid network type. * @param networkType the type to be tested * @return a boolean. {@code true} if the type is valid, else {@code false} */ public static boolean isNetworkTypeValid(int networkType) { return networkType >= 0 && networkType <= MAX_NETWORK_TYPE; } /** * Returns a non-localized string representing a given network type. * ONLY used for debugging output. * @param type the type needing naming * @return a String for the given type, or a string version of the type ("87") * if no name is known. * {@hide} */ public static String getNetworkTypeName(int type) { switch (type) { case TYPE_MOBILE: return "MOBILE"; case TYPE_WIFI: return "WIFI"; case TYPE_MOBILE_MMS: return "MOBILE_MMS"; case TYPE_MOBILE_SUPL: return "MOBILE_SUPL"; case TYPE_MOBILE_DUN: return "MOBILE_DUN"; case TYPE_MOBILE_HIPRI: return "MOBILE_HIPRI"; case TYPE_WIMAX: return "WIMAX"; case TYPE_BLUETOOTH: return "BLUETOOTH"; case TYPE_DUMMY: return "DUMMY"; case TYPE_ETHERNET: return "ETHERNET"; case TYPE_MOBILE_FOTA: return "MOBILE_FOTA"; case TYPE_MOBILE_IMS: return "MOBILE_IMS"; case TYPE_MOBILE_CBS: return "MOBILE_CBS"; case TYPE_WIFI_P2P: return "WIFI_P2P"; case TYPE_MOBILE_IA: return "MOBILE_IA"; case TYPE_MOBILE_EMERGENCY: return "MOBILE_EMERGENCY"; case TYPE_PROXY: return "PROXY"; default: return Integer.toString(type); } } /** * Checks if a given type uses the cellular data connection. * This should be replaced in the future by a network property. * @param networkType the type to check * @return a boolean - {@code true} if uses cellular network, else {@code false} * {@hide} */ public static boolean isNetworkTypeMobile(int networkType) { switch (networkType) { case TYPE_MOBILE: case TYPE_MOBILE_MMS: case TYPE_MOBILE_SUPL: case TYPE_MOBILE_DUN: case TYPE_MOBILE_HIPRI: case TYPE_MOBILE_FOTA: case TYPE_MOBILE_IMS: case TYPE_MOBILE_CBS: case TYPE_MOBILE_IA: case TYPE_MOBILE_EMERGENCY: return true; default: return false; } } /** * Checks if the given network type is backed by a Wi-Fi radio. * * @hide */ public static boolean isNetworkTypeWifi(int networkType) { switch (networkType) { case TYPE_WIFI: case TYPE_WIFI_P2P: return true; default: return false; } } /** * Specifies the preferred network type. When the device has more * than one type available the preferred network type will be used. * * @param preference the network type to prefer over all others. It is * unspecified what happens to the old preferred network in the * overall ordering. * @deprecated Functionality has been removed as it no longer makes sense, * with many more than two networks - we'd need an array to express * preference. Instead we use dynamic network properties of * the networks to describe their precedence. */ public void setNetworkPreference(int preference) { } /** * Retrieves the current preferred network type. * * @return an integer representing the preferred network type * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * @deprecated Functionality has been removed as it no longer makes sense, * with many more than two networks - we'd need an array to express * preference. Instead we use dynamic network properties of * the networks to describe their precedence. */ public int getNetworkPreference() { return TYPE_NONE; } /** * Returns details about the currently active default data network. When * connected, this network is the default route for outgoing connections. * You should always check {@link NetworkInfo#isConnected()} before initiating * network traffic. This may return {@code null} when there is no default * network. * * @return a {@link NetworkInfo} object for the current default network * or {@code null} if no network default network is currently active * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public NetworkInfo getActiveNetworkInfo() { try { return mService.getActiveNetworkInfo(); } catch (RemoteException e) { return null; } } /** * Returns details about the currently active default data network * for a given uid. This is for internal use only to avoid spying * other apps. * * @return a {@link NetworkInfo} object for the current default network * for the given uid or {@code null} if no default network is * available for the specified uid. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL} * {@hide} */ public NetworkInfo getActiveNetworkInfoForUid(int uid) { try { return mService.getActiveNetworkInfoForUid(uid); } catch (RemoteException e) { return null; } } /** * Returns connection status information about a particular * network type. * * @param networkType integer specifying which networkType in * which you're interested. * @return a {@link NetworkInfo} object for the requested * network type or {@code null} if the type is not * supported by the device. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public NetworkInfo getNetworkInfo(int networkType) { try { return mService.getNetworkInfo(networkType); } catch (RemoteException e) { return null; } } /** * Returns connection status information about a particular * Network. * * @param network {@link Network} specifying which network * in which you're interested. * @return a {@link NetworkInfo} object for the requested * network or {@code null} if the {@code Network} * is not valid. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public NetworkInfo getNetworkInfo(Network network) { try { return mService.getNetworkInfoForNetwork(network); } catch (RemoteException e) { return null; } } /** * Returns connection status information about all network * types supported by the device. * * @return an array of {@link NetworkInfo} objects. Check each * {@link NetworkInfo#getType} for which type each applies. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public NetworkInfo[] getAllNetworkInfo() { try { return mService.getAllNetworkInfo(); } catch (RemoteException e) { return null; } } /** * Returns the {@link Network} object currently serving a given type, or * null if the given type is not connected. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * * @hide */ public Network getNetworkForType(int networkType) { try { return mService.getNetworkForType(networkType); } catch (RemoteException e) { return null; } } /** * Returns an array of all {@link Network} currently tracked by the * framework. * * @return an array of {@link Network} objects. * *

This method requires the caller to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public Network[] getAllNetworks() { try { return mService.getAllNetworks(); } catch (RemoteException e) { return null; } } /** * Returns an array of of {@link NetworkCapabilities} objects, representing * the Networks that applications run by the given user will use by default. * @hide */ public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { try { return mService.getDefaultNetworkCapabilitiesForUser(userId); } catch (RemoteException e) { return null; } } /** * Returns details about the Provisioning or currently active default data network. When * connected, this network is the default route for outgoing connections. * You should always check {@link NetworkInfo#isConnected()} before initiating * network traffic. This may return {@code null} when there is no default * network. * * @return a {@link NetworkInfo} object for the current default network * or {@code null} if no network default network is currently active * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * * {@hide} */ public NetworkInfo getProvisioningOrActiveNetworkInfo() { try { return mService.getProvisioningOrActiveNetworkInfo(); } catch (RemoteException e) { return null; } } /** * Returns the IP information for the current default network. * * @return a {@link LinkProperties} object describing the IP info * for the current default network, or {@code null} if there * is no current default network. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public LinkProperties getActiveLinkProperties() { try { return mService.getActiveLinkProperties(); } catch (RemoteException e) { return null; } } /** * Returns the IP information for a given network type. * * @param networkType the network type of interest. * @return a {@link LinkProperties} object describing the IP info * for the given networkType, or {@code null} if there is * no current default network. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public LinkProperties getLinkProperties(int networkType) { try { return mService.getLinkPropertiesForType(networkType); } catch (RemoteException e) { return null; } } /** * Get the {@link LinkProperties} for the given {@link Network}. This * will return {@code null} if the network is unknown. * * @param network The {@link Network} object identifying the network in question. * @return The {@link LinkProperties} for the network, or {@code null}. **/ public LinkProperties getLinkProperties(Network network) { try { return mService.getLinkProperties(network); } catch (RemoteException e) { return null; } } /** * Get the {@link NetworkCapabilities} for the given {@link Network}. This * will return {@code null} if the network is unknown. * * @param network The {@link Network} object identifying the network in question. * @return The {@link NetworkCapabilities} for the network, or {@code null}. */ public NetworkCapabilities getNetworkCapabilities(Network network) { try { return mService.getNetworkCapabilities(network); } catch (RemoteException e) { return null; } } /** * Tells each network type to set its radio power state as directed. * * @param turnOn a boolean, {@code true} to turn the radios on, * {@code false} to turn them off. * @return a boolean, {@code true} indicating success. All network types * will be tried, even if some fail. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * {@hide} */ // TODO - check for any callers and remove // public boolean setRadios(boolean turnOn) { // try { // return mService.setRadios(turnOn); // } catch (RemoteException e) { // return false; // } // } /** * Tells a given networkType to set its radio power state as directed. * * @param networkType the int networkType of interest. * @param turnOn a boolean, {@code true} to turn the radio on, * {@code} false to turn it off. * @return a boolean, {@code true} indicating success. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * {@hide} */ // TODO - check for any callers and remove // public boolean setRadio(int networkType, boolean turnOn) { // try { // return mService.setRadio(networkType, turnOn); // } catch (RemoteException e) { // return false; // } // } /** * Tells the underlying networking system that the caller wants to * begin using the named feature. The interpretation of {@code feature} * is completely up to each networking implementation. *

This method requires the caller to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * @param networkType specifies which network the request pertains to * @param feature the name of the feature to be used * @return an integer value representing the outcome of the request. * The interpretation of this value is specific to each networking * implementation+feature combination, except that the value {@code -1} * always indicates failure. * * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. */ public int startUsingNetworkFeature(int networkType, String feature) { NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); if (netCap == null) { Log.d(TAG, "Can't satisfy startUsingNetworkFeature for " + networkType + ", " + feature); return PhoneConstants.APN_REQUEST_FAILED; } NetworkRequest request = null; synchronized (sLegacyRequests) { LegacyRequest l = sLegacyRequests.get(netCap); if (l != null) { Log.d(TAG, "renewing startUsingNetworkFeature request " + l.networkRequest); renewRequestLocked(l); if (l.currentNetwork != null) { return PhoneConstants.APN_ALREADY_ACTIVE; } else { return PhoneConstants.APN_REQUEST_STARTED; } } request = requestNetworkForFeatureLocked(netCap); } if (request != null) { Log.d(TAG, "starting startUsingNetworkFeature for request " + request); return PhoneConstants.APN_REQUEST_STARTED; } else { Log.d(TAG, " request Failed"); return PhoneConstants.APN_REQUEST_FAILED; } } /** * Tells the underlying networking system that the caller is finished * using the named feature. The interpretation of {@code feature} * is completely up to each networking implementation. *

This method requires the caller to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * @param networkType specifies which network the request pertains to * @param feature the name of the feature that is no longer needed * @return an integer value representing the outcome of the request. * The interpretation of this value is specific to each networking * implementation+feature combination, except that the value {@code -1} * always indicates failure. * * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. */ public int stopUsingNetworkFeature(int networkType, String feature) { NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); if (netCap == null) { Log.d(TAG, "Can't satisfy stopUsingNetworkFeature for " + networkType + ", " + feature); return -1; } if (removeRequestForFeature(netCap)) { Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature); } return 1; } /** * Removes the NET_CAPABILITY_NOT_RESTRICTED capability from the given * NetworkCapabilities object if all the capabilities it provides are * typically provided by restricted networks. * * TODO: consider: * - Moving to NetworkCapabilities * - Renaming it to guessRestrictedCapability and make it set the * restricted capability bit in addition to clearing it. * @hide */ public static void maybeMarkCapabilitiesRestricted(NetworkCapabilities nc) { for (int capability : nc.getCapabilities()) { switch (capability) { case NetworkCapabilities.NET_CAPABILITY_CBS: case NetworkCapabilities.NET_CAPABILITY_DUN: case NetworkCapabilities.NET_CAPABILITY_EIMS: case NetworkCapabilities.NET_CAPABILITY_FOTA: case NetworkCapabilities.NET_CAPABILITY_IA: case NetworkCapabilities.NET_CAPABILITY_IMS: case NetworkCapabilities.NET_CAPABILITY_RCS: case NetworkCapabilities.NET_CAPABILITY_XCAP: case NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED: //there by default continue; default: // At least one capability usually provided by unrestricted // networks. Conclude that this network is unrestricted. return; } } // All the capabilities are typically provided by restricted networks. // Conclude that this network is restricted. nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); } private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) { if (networkType == TYPE_MOBILE) { int cap = -1; if ("enableMMS".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_MMS; } else if ("enableSUPL".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_SUPL; } else if ("enableDUN".equals(feature) || "enableDUNAlways".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_DUN; } else if ("enableHIPRI".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_INTERNET; } else if ("enableFOTA".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_FOTA; } else if ("enableIMS".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_IMS; } else if ("enableCBS".equals(feature)) { cap = NetworkCapabilities.NET_CAPABILITY_CBS; } else { return null; } NetworkCapabilities netCap = new NetworkCapabilities(); netCap.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR).addCapability(cap); maybeMarkCapabilitiesRestricted(netCap); return netCap; } else if (networkType == TYPE_WIFI) { if ("p2p".equals(feature)) { NetworkCapabilities netCap = new NetworkCapabilities(); netCap.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P); maybeMarkCapabilitiesRestricted(netCap); return netCap; } } return null; } /** * Guess what the network request was trying to say so that the resulting * network is accessible via the legacy (deprecated) API such as * requestRouteToHost. * This means we should try to be fairly preceise about transport and * capability but ignore things such as networkSpecifier. * If the request has more than one transport or capability it doesn't * match the old legacy requests (they selected only single transport/capability) * so this function cannot map the request to a single legacy type and * the resulting network will not be available to the legacy APIs. * * TODO - This should be removed when the legacy APIs are removed. */ private int inferLegacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { if (netCap == null) { return TYPE_NONE; } if (!netCap.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { return TYPE_NONE; } String type = null; int result = TYPE_NONE; if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { type = "enableCBS"; result = TYPE_MOBILE_CBS; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { type = "enableIMS"; result = TYPE_MOBILE_IMS; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { type = "enableFOTA"; result = TYPE_MOBILE_FOTA; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { type = "enableDUN"; result = TYPE_MOBILE_DUN; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { type = "enableSUPL"; result = TYPE_MOBILE_SUPL; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { type = "enableMMS"; result = TYPE_MOBILE_MMS; } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { type = "enableHIPRI"; result = TYPE_MOBILE_HIPRI; } if (type != null) { NetworkCapabilities testCap = networkCapabilitiesForFeature(TYPE_MOBILE, type); if (testCap.equalsNetCapabilities(netCap) && testCap.equalsTransportTypes(netCap)) { return result; } } return TYPE_NONE; } private int legacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { if (netCap == null) return TYPE_NONE; if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { return TYPE_MOBILE_CBS; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { return TYPE_MOBILE_IMS; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { return TYPE_MOBILE_FOTA; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { return TYPE_MOBILE_DUN; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { return TYPE_MOBILE_SUPL; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { return TYPE_MOBILE_MMS; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { return TYPE_MOBILE_HIPRI; } if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P)) { return TYPE_WIFI_P2P; } return TYPE_NONE; } private static class LegacyRequest { NetworkCapabilities networkCapabilities; NetworkRequest networkRequest; int expireSequenceNumber; Network currentNetwork; int delay = -1; private void clearDnsBinding() { if (currentNetwork != null) { currentNetwork = null; setProcessDefaultNetworkForHostResolution(null); } } NetworkCallback networkCallback = new NetworkCallback() { @Override public void onAvailable(Network network) { currentNetwork = network; Log.d(TAG, "startUsingNetworkFeature got Network:" + network); setProcessDefaultNetworkForHostResolution(network); } @Override public void onLost(Network network) { if (network.equals(currentNetwork)) clearDnsBinding(); Log.d(TAG, "startUsingNetworkFeature lost Network:" + network); } }; } private static HashMap sLegacyRequests = new HashMap(); private NetworkRequest findRequestForFeature(NetworkCapabilities netCap) { synchronized (sLegacyRequests) { LegacyRequest l = sLegacyRequests.get(netCap); if (l != null) return l.networkRequest; } return null; } private void renewRequestLocked(LegacyRequest l) { l.expireSequenceNumber++; Log.d(TAG, "renewing request to seqNum " + l.expireSequenceNumber); sendExpireMsgForFeature(l.networkCapabilities, l.expireSequenceNumber, l.delay); } private void expireRequest(NetworkCapabilities netCap, int sequenceNum) { int ourSeqNum = -1; synchronized (sLegacyRequests) { LegacyRequest l = sLegacyRequests.get(netCap); if (l == null) return; ourSeqNum = l.expireSequenceNumber; if (l.expireSequenceNumber == sequenceNum) removeRequestForFeature(netCap); } Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum); } private NetworkRequest requestNetworkForFeatureLocked(NetworkCapabilities netCap) { int delay = -1; int type = legacyTypeForNetworkCapabilities(netCap); try { delay = mService.getRestoreDefaultNetworkDelay(type); } catch (RemoteException e) {} LegacyRequest l = new LegacyRequest(); l.networkCapabilities = netCap; l.delay = delay; l.expireSequenceNumber = 0; l.networkRequest = sendRequestForNetwork(netCap, l.networkCallback, 0, REQUEST, type); if (l.networkRequest == null) return null; sLegacyRequests.put(netCap, l); sendExpireMsgForFeature(netCap, l.expireSequenceNumber, delay); return l.networkRequest; } private void sendExpireMsgForFeature(NetworkCapabilities netCap, int seqNum, int delay) { if (delay >= 0) { Log.d(TAG, "sending expire msg with seqNum " + seqNum + " and delay " + delay); Message msg = sCallbackHandler.obtainMessage(EXPIRE_LEGACY_REQUEST, seqNum, 0, netCap); sCallbackHandler.sendMessageDelayed(msg, delay); } } private boolean removeRequestForFeature(NetworkCapabilities netCap) { final LegacyRequest l; synchronized (sLegacyRequests) { l = sLegacyRequests.remove(netCap); } if (l == null) return false; unregisterNetworkCallback(l.networkCallback); l.clearDnsBinding(); return true; } /** * Ensure that a network route exists to deliver traffic to the specified * host via the specified network interface. An attempt to add a route that * already exists is ignored, but treated as successful. *

This method requires the caller to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * @param networkType the type of the network over which traffic to the specified * host is to be routed * @param hostAddress the IP address of the host to which the route is desired * @return {@code true} on success, {@code false} on failure * * @deprecated Deprecated in favor of the {@link #requestNetwork}, * {@link #setProcessDefaultNetwork} and {@link Network#getSocketFactory} api. */ public boolean requestRouteToHost(int networkType, int hostAddress) { return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress)); } /** * Ensure that a network route exists to deliver traffic to the specified * host via the specified network interface. An attempt to add a route that * already exists is ignored, but treated as successful. *

This method requires the caller to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * @param networkType the type of the network over which traffic to the specified * host is to be routed * @param hostAddress the IP address of the host to which the route is desired * @return {@code true} on success, {@code false} on failure * @hide * @deprecated Deprecated in favor of the {@link #requestNetwork} and * {@link #setProcessDefaultNetwork} api. */ public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) { try { return mService.requestRouteToHostAddress(networkType, hostAddress.getAddress()); } catch (RemoteException e) { return false; } } /** * Returns the value of the setting for background data usage. If false, * applications should not use the network if the application is not in the * foreground. Developers should respect this setting, and check the value * of this before performing any background data operations. *

* All applications that have background services that use the network * should listen to {@link #ACTION_BACKGROUND_DATA_SETTING_CHANGED}. *

* @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability of * background data depends on several combined factors, and this method will * always return {@code true}. Instead, when background data is unavailable, * {@link #getActiveNetworkInfo()} will now appear disconnected. * * @return Whether background data usage is allowed. */ @Deprecated public boolean getBackgroundDataSetting() { // assume that background data is allowed; final authority is // NetworkInfo which may be blocked. return true; } /** * Sets the value of the setting for background data usage. * * @param allowBackgroundData Whether an application should use data while * it is in the background. * * @attr ref android.Manifest.permission#CHANGE_BACKGROUND_DATA_SETTING * @see #getBackgroundDataSetting() * @hide */ @Deprecated public void setBackgroundDataSetting(boolean allowBackgroundData) { // ignored } /** * Return quota status for the current active network, or {@code null} if no * network is active. Quota status can change rapidly, so these values * shouldn't be cached. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * * @hide */ public NetworkQuotaInfo getActiveNetworkQuotaInfo() { try { return mService.getActiveNetworkQuotaInfo(); } catch (RemoteException e) { return null; } } /** * @hide * @deprecated Talk to TelephonyManager directly */ public boolean getMobileDataEnabled() { IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE); if (b != null) { try { ITelephony it = ITelephony.Stub.asInterface(b); int subId = SubscriptionManager.getDefaultDataSubId(); Log.d("ConnectivityManager", "getMobileDataEnabled()+ subId=" + subId); boolean retVal = it.getDataEnabled(subId); Log.d("ConnectivityManager", "getMobileDataEnabled()- subId=" + subId + " retVal=" + retVal); return retVal; } catch (RemoteException e) { } } Log.d("ConnectivityManager", "getMobileDataEnabled()- remote exception retVal=false"); return false; } /** * Callback for use with {@link ConnectivityManager#addDefaultNetworkActiveListener} * to find out when the system default network has gone in to a high power state. */ public interface OnNetworkActiveListener { /** * Called on the main thread of the process to report that the current data network * has become active, and it is now a good time to perform any pending network * operations. Note that this listener only tells you when the network becomes * active; if at any other time you want to know whether it is active (and thus okay * to initiate network traffic), you can retrieve its instantaneous state with * {@link ConnectivityManager#isDefaultNetworkActive}. */ public void onNetworkActive(); } private INetworkManagementService getNetworkManagementService() { synchronized (this) { if (mNMService != null) { return mNMService; } IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); mNMService = INetworkManagementService.Stub.asInterface(b); return mNMService; } } private final ArrayMap mNetworkActivityListeners = new ArrayMap(); /** * Start listening to reports when the system's default data network is active, meaning it is * a good time to perform network traffic. Use {@link #isDefaultNetworkActive()} * to determine the current state of the system's default network after registering the * listener. *

* If the process default network has been set with * {@link ConnectivityManager#setProcessDefaultNetwork} this function will not * reflect the process's default, but the system default. * * @param l The listener to be told when the network is active. */ public void addDefaultNetworkActiveListener(final OnNetworkActiveListener l) { INetworkActivityListener rl = new INetworkActivityListener.Stub() { @Override public void onNetworkActive() throws RemoteException { l.onNetworkActive(); } }; try { getNetworkManagementService().registerNetworkActivityListener(rl); mNetworkActivityListeners.put(l, rl); } catch (RemoteException e) { } } /** * Remove network active listener previously registered with * {@link #addDefaultNetworkActiveListener}. * * @param l Previously registered listener. */ public void removeDefaultNetworkActiveListener(OnNetworkActiveListener l) { INetworkActivityListener rl = mNetworkActivityListeners.get(l); if (rl == null) { throw new IllegalArgumentException("Listener not registered: " + l); } try { getNetworkManagementService().unregisterNetworkActivityListener(rl); } catch (RemoteException e) { } } /** * Return whether the data network is currently active. An active network means that * it is currently in a high power state for performing data transmission. On some * types of networks, it may be expensive to move and stay in such a state, so it is * more power efficient to batch network traffic together when the radio is already in * this state. This method tells you whether right now is currently a good time to * initiate network traffic, as the network is already active. */ public boolean isDefaultNetworkActive() { try { return getNetworkManagementService().isNetworkActive(); } catch (RemoteException e) { } return false; } /** * {@hide} */ public ConnectivityManager(IConnectivityManager service) { mService = checkNotNull(service, "missing IConnectivityManager"); sInstance = this; } /** {@hide} */ public static ConnectivityManager from(Context context) { return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); } /** {@hide */ public static final void enforceTetherChangePermission(Context context) { if (context.getResources().getStringArray( com.android.internal.R.array.config_mobile_hotspot_provision_app).length == 2) { // Have a provisioning app - must only let system apps (which check this app) // turn on tethering context.enforceCallingOrSelfPermission( android.Manifest.permission.CONNECTIVITY_INTERNAL, "ConnectivityService"); } else { context.enforceCallingOrSelfPermission( android.Manifest.permission.CHANGE_NETWORK_STATE, "ConnectivityService"); } } /** * @deprecated - use getSystemService. This is a kludge to support static access in certain * situations where a Context pointer is unavailable. * @hide */ public static ConnectivityManager getInstance() { if (sInstance == null) { throw new IllegalStateException("No ConnectivityManager yet constructed"); } return sInstance; } /** * Get the set of tetherable, available interfaces. This list is limited by * device configuration and current interface existence. * * @return an array of 0 or more Strings of tetherable interface names. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetherableIfaces() { try { return mService.getTetherableIfaces(); } catch (RemoteException e) { return new String[0]; } } /** * Get the set of tethered interfaces. * * @return an array of 0 or more String of currently tethered interface names. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetheredIfaces() { try { return mService.getTetheredIfaces(); } catch (RemoteException e) { return new String[0]; } } /** * Get the set of interface names which attempted to tether but * failed. Re-attempting to tether may cause them to reset to the Tethered * state. Alternatively, causing the interface to be destroyed and recreated * may cause them to reset to the available state. * {@link ConnectivityManager#getLastTetherError} can be used to get more * information on the cause of the errors. * * @return an array of 0 or more String indicating the interface names * which failed to tether. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetheringErroredIfaces() { try { return mService.getTetheringErroredIfaces(); } catch (RemoteException e) { return new String[0]; } } /** * Get the set of tethered dhcp ranges. * * @return an array of 0 or more {@code String} of tethered dhcp ranges. * {@hide} */ public String[] getTetheredDhcpRanges() { try { return mService.getTetheredDhcpRanges(); } catch (RemoteException e) { return new String[0]; } } /** * Attempt to tether the named interface. This will setup a dhcp server * on the interface, forward and NAT IP packets and forward DNS requests * to the best active upstream network interface. Note that if no upstream * IP network interface is available, dhcp will still run and traffic will be * allowed between the tethered devices and this device, though upstream net * access will of course fail until an upstream network interface becomes * active. * * @param iface the interface name to tether. * @return error a {@code TETHER_ERROR} value indicating success or failure type * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * {@hide} */ public int tether(String iface) { try { return mService.tether(iface); } catch (RemoteException e) { return TETHER_ERROR_SERVICE_UNAVAIL; } } /** * Stop tethering the named interface. * * @param iface the interface name to untether. * @return error a {@code TETHER_ERROR} value indicating success or failure type * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * {@hide} */ public int untether(String iface) { try { return mService.untether(iface); } catch (RemoteException e) { return TETHER_ERROR_SERVICE_UNAVAIL; } } /** * Check if the device allows for tethering. It may be disabled via * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or * due to device configuration. * * @return a boolean - {@code true} indicating Tethering is supported. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public boolean isTetheringSupported() { try { return mService.isTetheringSupported(); } catch (RemoteException e) { return false; } } /** * Get the list of regular expressions that define any tetherable * USB network interfaces. If USB tethering is not supported by the * device, this list should be empty. * * @return an array of 0 or more regular expression Strings defining * what interfaces are considered tetherable usb interfaces. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetherableUsbRegexs() { try { return mService.getTetherableUsbRegexs(); } catch (RemoteException e) { return new String[0]; } } /** * Get the list of regular expressions that define any tetherable * Wifi network interfaces. If Wifi tethering is not supported by the * device, this list should be empty. * * @return an array of 0 or more regular expression Strings defining * what interfaces are considered tetherable wifi interfaces. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetherableWifiRegexs() { try { return mService.getTetherableWifiRegexs(); } catch (RemoteException e) { return new String[0]; } } /** * Get the list of regular expressions that define any tetherable * Bluetooth network interfaces. If Bluetooth tethering is not supported by the * device, this list should be empty. * * @return an array of 0 or more regular expression Strings defining * what interfaces are considered tetherable bluetooth interfaces. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public String[] getTetherableBluetoothRegexs() { try { return mService.getTetherableBluetoothRegexs(); } catch (RemoteException e) { return new String[0]; } } /** * Attempt to both alter the mode of USB and Tethering of USB. A * utility method to deal with some of the complexity of USB - will * attempt to switch to Rndis and subsequently tether the resulting * interface on {@code true} or turn off tethering and switch off * Rndis on {@code false}. * * @param enable a boolean - {@code true} to enable tethering * @return error a {@code TETHER_ERROR} value indicating success or failure type * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. * {@hide} */ public int setUsbTethering(boolean enable) { try { return mService.setUsbTethering(enable); } catch (RemoteException e) { return TETHER_ERROR_SERVICE_UNAVAIL; } } /** {@hide} */ public static final int TETHER_ERROR_NO_ERROR = 0; /** {@hide} */ public static final int TETHER_ERROR_UNKNOWN_IFACE = 1; /** {@hide} */ public static final int TETHER_ERROR_SERVICE_UNAVAIL = 2; /** {@hide} */ public static final int TETHER_ERROR_UNSUPPORTED = 3; /** {@hide} */ public static final int TETHER_ERROR_UNAVAIL_IFACE = 4; /** {@hide} */ public static final int TETHER_ERROR_MASTER_ERROR = 5; /** {@hide} */ public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6; /** {@hide} */ public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7; /** {@hide} */ public static final int TETHER_ERROR_ENABLE_NAT_ERROR = 8; /** {@hide} */ public static final int TETHER_ERROR_DISABLE_NAT_ERROR = 9; /** {@hide} */ public static final int TETHER_ERROR_IFACE_CFG_ERROR = 10; /** * Get a more detailed error code after a Tethering or Untethering * request asynchronously failed. * * @param iface The name of the interface of interest * @return error The error code of the last error tethering or untethering the named * interface * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * {@hide} */ public int getLastTetherError(String iface) { try { return mService.getLastTetherError(iface); } catch (RemoteException e) { return TETHER_ERROR_SERVICE_UNAVAIL; } } /** * Report network connectivity status. This is currently used only * to alter status bar UI. * * @param networkType The type of network you want to report on * @param percentage The quality of the connection 0 is bad, 100 is good * *

This method requires the call to hold the permission * {@link android.Manifest.permission#STATUS_BAR}. * {@hide} */ public void reportInetCondition(int networkType, int percentage) { try { mService.reportInetCondition(networkType, percentage); } catch (RemoteException e) { } } /** * Report a problem network to the framework. This provides a hint to the system * that there might be connectivity problems on this network and may cause * the framework to re-evaluate network connectivity and/or switch to another * network. * * @param network The {@link Network} the application was attempting to use * or {@code null} to indicate the current default network. */ public void reportBadNetwork(Network network) { try { mService.reportBadNetwork(network); } catch (RemoteException e) { } } /** * Set a network-independent global http proxy. This is not normally what you want * for typical HTTP proxies - they are general network dependent. However if you're * doing something unusual like general internal filtering this may be useful. On * a private network where the proxy is not accessible, you may break HTTP using this. * * @param p The a {@link ProxyInfo} object defining the new global * HTTP proxy. A {@code null} value will clear the global HTTP proxy. * *

This method requires the call to hold the permission * android.Manifest.permission#CONNECTIVITY_INTERNAL. * @hide */ public void setGlobalProxy(ProxyInfo p) { try { mService.setGlobalProxy(p); } catch (RemoteException e) { } } /** * Retrieve any network-independent global HTTP proxy. * * @return {@link ProxyInfo} for the current global HTTP proxy or {@code null} * if no global HTTP proxy is set. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * @hide */ public ProxyInfo getGlobalProxy() { try { return mService.getGlobalProxy(); } catch (RemoteException e) { return null; } } /** * Get the current default HTTP proxy settings. If a global proxy is set it will be returned, * otherwise if this process is bound to a {@link Network} using * {@link #setProcessDefaultNetwork} then that {@code Network}'s proxy is returned, otherwise * the default network's proxy is returned. * * @return the {@link ProxyInfo} for the current HTTP proxy, or {@code null} if no * HTTP proxy is active. * @hide */ public ProxyInfo getDefaultProxy() { final Network network = getProcessDefaultNetwork(); if (network != null) { final ProxyInfo globalProxy = getGlobalProxy(); if (globalProxy != null) return globalProxy; final LinkProperties lp = getLinkProperties(network); if (lp != null) return lp.getHttpProxy(); return null; } try { return mService.getDefaultProxy(); } catch (RemoteException e) { return null; } } /** * Sets a secondary requirement bit for the given networkType. * This requirement bit is generally under the control of the carrier * or its agents and is not directly controlled by the user. * * @param networkType The network who's dependence has changed * @param met Boolean - true if network use is OK, false if not * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. * {@hide} */ public void setDataDependency(int networkType, boolean met) { try { mService.setDataDependency(networkType, met); } catch (RemoteException e) { } } /** * Returns true if the hardware supports the given network type * else it returns false. This doesn't indicate we have coverage * or are authorized onto a network, just whether or not the * hardware supports it. For example a GSM phone without a SIM * should still return {@code true} for mobile data, but a wifi only * tablet would return {@code false}. * * @param networkType The network type we'd like to check * @return {@code true} if supported, else {@code false} * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. * @hide */ public boolean isNetworkSupported(int networkType) { try { return mService.isNetworkSupported(networkType); } catch (RemoteException e) {} return false; } /** * Returns if the currently active data network is metered. A network is * classified as metered when the user is sensitive to heavy data usage on * that connection due to monetary costs, data limitations or * battery/performance issues. You should check this before doing large * data transfers, and warn the user or delay the operation until another * network is available. * * @return {@code true} if large transfers should be avoided, otherwise * {@code false}. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. */ public boolean isActiveNetworkMetered() { try { return mService.isActiveNetworkMetered(); } catch (RemoteException e) { return false; } } /** * If the LockdownVpn mechanism is enabled, updates the vpn * with a reload of its profile. * * @return a boolean with {@code} indicating success * *

This method can only be called by the system UID * {@hide} */ public boolean updateLockdownVpn() { try { return mService.updateLockdownVpn(); } catch (RemoteException e) { return false; } } /** * Signal that the captive portal check on the indicated network * is complete and whether its a captive portal or not. * * @param info the {@link NetworkInfo} object for the networkType * in question. * @param isCaptivePortal true/false. * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. * {@hide} */ public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { try { mService.captivePortalCheckCompleted(info, isCaptivePortal); } catch (RemoteException e) { } } /** * Supply the backend messenger for a network tracker * * @param networkType NetworkType to set * @param messenger {@link Messenger} * {@hide} */ public void supplyMessenger(int networkType, Messenger messenger) { try { mService.supplyMessenger(networkType, messenger); } catch (RemoteException e) { } } /** * Check mobile provisioning. * * @param suggestedTimeOutMs, timeout in milliseconds * * @return time out that will be used, maybe less that suggestedTimeOutMs * -1 if an error. * * {@hide} */ public int checkMobileProvisioning(int suggestedTimeOutMs) { int timeOutMs = -1; try { timeOutMs = mService.checkMobileProvisioning(suggestedTimeOutMs); } catch (RemoteException e) { } return timeOutMs; } /** * Get the mobile provisioning url. * {@hide} */ public String getMobileProvisioningUrl() { try { return mService.getMobileProvisioningUrl(); } catch (RemoteException e) { } return null; } /** * Get the mobile redirected provisioning url. * {@hide} */ public String getMobileRedirectedProvisioningUrl() { try { return mService.getMobileRedirectedProvisioningUrl(); } catch (RemoteException e) { } return null; } /** * Set sign in error notification to visible or in visible * * @param visible * @param networkType * * {@hide} */ public void setProvisioningNotificationVisible(boolean visible, int networkType, String action) { try { mService.setProvisioningNotificationVisible(visible, networkType, action); } catch (RemoteException e) { } } /** * Set the value for enabling/disabling airplane mode * * @param enable whether to enable airplane mode or not * *

This method requires the call to hold the permission * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. * @hide */ public void setAirplaneMode(boolean enable) { try { mService.setAirplaneMode(enable); } catch (RemoteException e) { } } /** {@hide} */ public void registerNetworkFactory(Messenger messenger, String name) { try { mService.registerNetworkFactory(messenger, name); } catch (RemoteException e) { } } /** {@hide} */ public void unregisterNetworkFactory(Messenger messenger) { try { mService.unregisterNetworkFactory(messenger); } catch (RemoteException e) { } } /** {@hide} */ public void registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp, NetworkCapabilities nc, int score, NetworkMisc misc) { try { mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc); } catch (RemoteException e) { } } /** * Base class for NetworkRequest callbacks. Used for notifications about network * changes. Should be extended by applications wanting notifications. */ public static class NetworkCallback { /** @hide */ public static final int PRECHECK = 1; /** @hide */ public static final int AVAILABLE = 2; /** @hide */ public static final int LOSING = 3; /** @hide */ public static final int LOST = 4; /** @hide */ public static final int UNAVAIL = 5; /** @hide */ public static final int CAP_CHANGED = 6; /** @hide */ public static final int PROP_CHANGED = 7; /** @hide */ public static final int CANCELED = 8; /** * @hide * Called whenever the framework connects to a network that it may use to * satisfy this request */ public void onPreCheck(Network network) {} /** * Called when the framework connects and has declared new network ready for use. * This callback may be called more than once if the {@link Network} that is * satisfying the request changes. * * @param network The {@link Network} of the satisfying network. */ public void onAvailable(Network network) {} /** * Called when the network is about to be disconnected. Often paired with an * {@link NetworkCallback#onAvailable} call with the new replacement network * for graceful handover. This may not be called if we have a hard loss * (loss without warning). This may be followed by either a * {@link NetworkCallback#onLost} call or a * {@link NetworkCallback#onAvailable} call for this network depending * on whether we lose or regain it. * * @param network The {@link Network} that is about to be disconnected. * @param maxMsToLive The time in ms the framework will attempt to keep the * network connected. Note that the network may suffer a * hard loss at any time. */ public void onLosing(Network network, int maxMsToLive) {} /** * Called when the framework has a hard loss of the network or when the * graceful failure ends. * * @param network The {@link Network} lost. */ public void onLost(Network network) {} /** * Called if no network is found in the given timeout time. If no timeout is given, * this will not be called. * @hide */ public void onUnavailable() {} /** * Called when the network the framework connected to for this request * changes capabilities but still satisfies the stated need. * * @param network The {@link Network} whose capabilities have changed. * @param networkCapabilities The new {@link NetworkCapabilities} for this network. */ public void onCapabilitiesChanged(Network network, NetworkCapabilities networkCapabilities) {} /** * Called when the network the framework connected to for this request * changes {@link LinkProperties}. * * @param network The {@link Network} whose link properties have changed. * @param linkProperties The new {@link LinkProperties} for this network. */ public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) {} private NetworkRequest networkRequest; } private static final int BASE = Protocol.BASE_CONNECTIVITY_MANAGER; /** @hide obj = pair(NetworkRequest, Network) */ public static final int CALLBACK_PRECHECK = BASE + 1; /** @hide obj = pair(NetworkRequest, Network) */ public static final int CALLBACK_AVAILABLE = BASE + 2; /** @hide obj = pair(NetworkRequest, Network), arg1 = ttl */ public static final int CALLBACK_LOSING = BASE + 3; /** @hide obj = pair(NetworkRequest, Network) */ public static final int CALLBACK_LOST = BASE + 4; /** @hide obj = NetworkRequest */ public static final int CALLBACK_UNAVAIL = BASE + 5; /** @hide obj = pair(NetworkRequest, Network) */ public static final int CALLBACK_CAP_CHANGED = BASE + 6; /** @hide obj = pair(NetworkRequest, Network) */ public static final int CALLBACK_IP_CHANGED = BASE + 7; /** @hide obj = NetworkRequest */ public static final int CALLBACK_RELEASED = BASE + 8; /** @hide */ public static final int CALLBACK_EXIT = BASE + 9; /** @hide obj = NetworkCapabilities, arg1 = seq number */ private static final int EXPIRE_LEGACY_REQUEST = BASE + 10; private class CallbackHandler extends Handler { private final HashMapmCallbackMap; private final AtomicInteger mRefCount; private static final String TAG = "ConnectivityManager.CallbackHandler"; private final ConnectivityManager mCm; CallbackHandler(Looper looper, HashMapcallbackMap, AtomicInteger refCount, ConnectivityManager cm) { super(looper); mCallbackMap = callbackMap; mRefCount = refCount; mCm = cm; } @Override public void handleMessage(Message message) { Log.d(TAG, "CM callback handler got msg " + message.what); switch (message.what) { case CALLBACK_PRECHECK: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { callbacks.onPreCheck((Network)getObject(message, Network.class)); } else { Log.e(TAG, "callback not found for PRECHECK message"); } break; } case CALLBACK_AVAILABLE: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { callbacks.onAvailable((Network)getObject(message, Network.class)); } else { Log.e(TAG, "callback not found for AVAILABLE message"); } break; } case CALLBACK_LOSING: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { callbacks.onLosing((Network)getObject(message, Network.class), message.arg1); } else { Log.e(TAG, "callback not found for LOSING message"); } break; } case CALLBACK_LOST: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { callbacks.onLost((Network)getObject(message, Network.class)); } else { Log.e(TAG, "callback not found for LOST message"); } break; } case CALLBACK_UNAVAIL: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = null; synchronized(mCallbackMap) { callbacks = mCallbackMap.get(request); } if (callbacks != null) { callbacks.onUnavailable(); } else { Log.e(TAG, "callback not found for UNAVAIL message"); } break; } case CALLBACK_CAP_CHANGED: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { Network network = (Network)getObject(message, Network.class); NetworkCapabilities cap = (NetworkCapabilities)getObject(message, NetworkCapabilities.class); callbacks.onCapabilitiesChanged(network, cap); } else { Log.e(TAG, "callback not found for CAP_CHANGED message"); } break; } case CALLBACK_IP_CHANGED: { NetworkRequest request = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = getCallbacks(request); if (callbacks != null) { Network network = (Network)getObject(message, Network.class); LinkProperties lp = (LinkProperties)getObject(message, LinkProperties.class); callbacks.onLinkPropertiesChanged(network, lp); } else { Log.e(TAG, "callback not found for IP_CHANGED message"); } break; } case CALLBACK_RELEASED: { NetworkRequest req = (NetworkRequest)getObject(message, NetworkRequest.class); NetworkCallback callbacks = null; synchronized(mCallbackMap) { callbacks = mCallbackMap.remove(req); } if (callbacks != null) { synchronized(mRefCount) { if (mRefCount.decrementAndGet() == 0) { getLooper().quit(); } } } else { Log.e(TAG, "callback not found for CANCELED message"); } break; } case CALLBACK_EXIT: { Log.d(TAG, "Listener quiting"); getLooper().quit(); break; } case EXPIRE_LEGACY_REQUEST: { expireRequest((NetworkCapabilities)message.obj, message.arg1); break; } } } private Object getObject(Message msg, Class c) { return msg.getData().getParcelable(c.getSimpleName()); } private NetworkCallback getCallbacks(NetworkRequest req) { synchronized(mCallbackMap) { return mCallbackMap.get(req); } } } private void incCallbackHandlerRefCount() { synchronized(sCallbackRefCount) { if (sCallbackRefCount.incrementAndGet() == 1) { // TODO - switch this over to a ManagerThread or expire it when done HandlerThread callbackThread = new HandlerThread("ConnectivityManager"); callbackThread.start(); sCallbackHandler = new CallbackHandler(callbackThread.getLooper(), sNetworkCallback, sCallbackRefCount, this); } } } private void decCallbackHandlerRefCount() { synchronized(sCallbackRefCount) { if (sCallbackRefCount.decrementAndGet() == 0) { sCallbackHandler.obtainMessage(CALLBACK_EXIT).sendToTarget(); sCallbackHandler = null; } } } static final HashMap sNetworkCallback = new HashMap(); static final AtomicInteger sCallbackRefCount = new AtomicInteger(0); static CallbackHandler sCallbackHandler = null; private final static int LISTEN = 1; private final static int REQUEST = 2; private NetworkRequest sendRequestForNetwork(NetworkCapabilities need, NetworkCallback networkCallback, int timeoutSec, int action, int legacyType) { if (networkCallback == null) { throw new IllegalArgumentException("null NetworkCallback"); } if (need == null) throw new IllegalArgumentException("null NetworkCapabilities"); try { incCallbackHandlerRefCount(); synchronized(sNetworkCallback) { if (action == LISTEN) { networkCallback.networkRequest = mService.listenForNetwork(need, new Messenger(sCallbackHandler), new Binder()); } else { networkCallback.networkRequest = mService.requestNetwork(need, new Messenger(sCallbackHandler), timeoutSec, new Binder(), legacyType); } if (networkCallback.networkRequest != null) { sNetworkCallback.put(networkCallback.networkRequest, networkCallback); } } } catch (RemoteException e) {} if (networkCallback.networkRequest == null) decCallbackHandlerRefCount(); return networkCallback.networkRequest; } /** * Request a network to satisfy a set of {@link NetworkCapabilities}. * * This {@link NetworkRequest} will live until released via * {@link #unregisterNetworkCallback} or the calling application exits. * Status of the request can be followed by listening to the various * callbacks described in {@link NetworkCallback}. The {@link Network} * can be used to direct traffic to the network. * * @param request {@link NetworkRequest} describing this request. * @param networkCallback The {@link NetworkCallback} to be utilized for this * request. Note the callback must not be shared - they * uniquely specify this request. */ public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback) { sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); } /** * Request a network to satisfy a set of {@link NetworkCapabilities}, limited * by a timeout. * * This function behaves identically to the non-timedout version, but if a suitable * network is not found within the given time (in milliseconds) the * {@link NetworkCallback#unavailable} callback is called. The request must * still be released normally by calling {@link releaseNetworkRequest}. * @param request {@link NetworkRequest} describing this request. * @param networkCallback The callbacks to be utilized for this request. Note * the callbacks must not be shared - they uniquely specify * this request. * @param timeoutMs The time in milliseconds to attempt looking for a suitable network * before {@link NetworkCallback#unavailable} is called. * @hide */ public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, int timeoutMs) { sendRequestForNetwork(request.networkCapabilities, networkCallback, timeoutMs, REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); } /** * The maximum number of milliseconds the framework will look for a suitable network * during a timeout-equiped call to {@link requestNetwork}. * {@hide} */ public final static int MAX_NETWORK_REQUEST_TIMEOUT_MS = 100 * 60 * 1000; /** * The lookup key for a {@link Network} object included with the intent after * successfully finding a network for the applications request. Retrieve it with * {@link android.content.Intent#getParcelableExtra(String)}. *

* Note that if you intend to invoke (@link #setProcessDefaultNetwork(Network)) or * {@link Network#openConnection(java.net.URL)} then you must get a * ConnectivityManager instance before doing so. */ public static final String EXTRA_NETWORK = "android.net.extra.NETWORK"; /** * The lookup key for a {@link NetworkRequest} object included with the intent after * successfully finding a network for the applications request. Retrieve it with * {@link android.content.Intent#getParcelableExtra(String)}. */ public static final String EXTRA_NETWORK_REQUEST = "android.net.extra.NETWORK_REQUEST"; /** * Request a network to satisfy a set of {@link NetworkCapabilities}. * * This function behaves identically to the version that takes a NetworkCallback, but instead * of {@link NetworkCallback} a {@link PendingIntent} is used. This means * the request may outlive the calling application and get called back when a suitable * network is found. *

* The operation is an Intent broadcast that goes to a broadcast receiver that * you registered with {@link Context#registerReceiver} or through the * <receiver> tag in an AndroidManifest.xml file *

* The operation Intent is delivered with two extras, a {@link Network} typed * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest} * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing * the original requests parameters. It is important to create a new, * {@link NetworkCallback} based request before completing the processing of the * Intent to reserve the network or it will be released shortly after the Intent * is processed. *

* If there is already an request for this Intent registered (with the equality of * two Intents defined by {@link Intent#filterEquals}), then it will be removed and * replaced by this one, effectively releasing the previous {@link NetworkRequest}. *

* The request may be released normally by calling * {@link #releaseNetworkRequest(android.app.PendingIntent)}. * * @param request {@link NetworkRequest} describing this request. * @param operation Action to perform when the network is available (corresponds * to the {@link NetworkCallback#onAvailable} call. Typically * comes from {@link PendingIntent#getBroadcast}. Cannot be null. */ public void requestNetwork(NetworkRequest request, PendingIntent operation) { checkPendingIntent(operation); try { mService.pendingRequestForNetwork(request.networkCapabilities, operation); } catch (RemoteException e) {} } /** * Removes a request made via {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} *

* This method has the same behavior as {@link #unregisterNetworkCallback} with respect to * releasing network resources and disconnecting. * * @param operation A PendingIntent equal (as defined by {@link Intent#filterEquals}) to the * PendingIntent passed to * {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} with the * corresponding NetworkRequest you'd like to remove. Cannot be null. */ public void releaseNetworkRequest(PendingIntent operation) { checkPendingIntent(operation); try { mService.releasePendingNetworkRequest(operation); } catch (RemoteException e) {} } private void checkPendingIntent(PendingIntent intent) { if (intent == null) { throw new IllegalArgumentException("PendingIntent cannot be null."); } } /** * Registers to receive notifications about all networks which satisfy the given * {@link NetworkRequest}. The callbacks will continue to be called until * either the application exits or {@link #unregisterNetworkCallback} is called * * @param request {@link NetworkRequest} describing this request. * @param networkCallback The {@link NetworkCallback} that the system will call as suitable * networks change state. */ public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) { sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, LISTEN, TYPE_NONE); } /** * Unregisters callbacks about and possibly releases networks originating from * {@link #requestNetwork} and {@link #registerNetworkCallback} calls. If the * given {@code NetworkCallback} had previously been used with {@code #requestNetwork}, * any networks that had been connected to only to satisfy that request will be * disconnected. * * @param networkCallback The {@link NetworkCallback} used when making the request. */ public void unregisterNetworkCallback(NetworkCallback networkCallback) { if (networkCallback == null || networkCallback.networkRequest == null || networkCallback.networkRequest.requestId == REQUEST_ID_UNSET) { throw new IllegalArgumentException("Invalid NetworkCallback"); } try { mService.releaseNetworkRequest(networkCallback.networkRequest); } catch (RemoteException e) {} } /** * Binds the current process to {@code network}. All Sockets created in the future * (and not explicitly bound via a bound SocketFactory from * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to * {@code network}. All host name resolutions will be limited to {@code network} as well. * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to * work and all host name resolutions will fail. This is by design so an application doesn't * accidentally use Sockets it thinks are still bound to a particular {@link Network}. * To clear binding pass {@code null} for {@code network}. Using individually bound * Sockets created by Network.getSocketFactory().createSocket() and * performing network-specific host name resolutions via * {@link Network#getAllByName Network.getAllByName} is preferred to calling * {@code setProcessDefaultNetwork}. * * @param network The {@link Network} to bind the current process to, or {@code null} to clear * the current binding. * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. */ public static boolean setProcessDefaultNetwork(Network network) { int netId = (network == null) ? NETID_UNSET : network.netId; if (netId == NetworkUtils.getNetworkBoundToProcess()) { return true; } if (NetworkUtils.bindProcessToNetwork(netId)) { // Set HTTP proxy system properties to match network. // TODO: Deprecate this static method and replace it with a non-static version. Proxy.setHttpProxySystemProperty(getInstance().getDefaultProxy()); // Must flush DNS cache as new network may have different DNS resolutions. InetAddress.clearDnsCache(); // Must flush socket pool as idle sockets will be bound to previous network and may // cause subsequent fetches to be performed on old network. NetworkEventDispatcher.getInstance().onNetworkConfigurationChanged(); return true; } else { return false; } } /** * Returns the {@link Network} currently bound to this process via * {@link #setProcessDefaultNetwork}, or {@code null} if no {@link Network} is explicitly bound. * * @return {@code Network} to which this process is bound, or {@code null}. */ public static Network getProcessDefaultNetwork() { int netId = NetworkUtils.getNetworkBoundToProcess(); if (netId == NETID_UNSET) return null; return new Network(netId); } /** * Binds host resolutions performed by this process to {@code network}. * {@link #setProcessDefaultNetwork} takes precedence over this setting. * * @param network The {@link Network} to bind host resolutions from the current process to, or * {@code null} to clear the current binding. * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. * @hide * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}. */ public static boolean setProcessDefaultNetworkForHostResolution(Network network) { return NetworkUtils.bindProcessToNetworkForHostResolution( network == null ? NETID_UNSET : network.netId); } }