ConnectivityManager.java revision 57bf2a8a38e929f00f3323cf97a8ea7a9af900ce
1/* 2 * Copyright (C) 2008 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 */ 16package android.net; 17 18import static com.android.internal.util.Preconditions.checkNotNull; 19 20import android.annotation.SdkConstant; 21import android.annotation.SdkConstant.SdkConstantType; 22import android.app.PendingIntent; 23import android.content.Context; 24import android.content.Intent; 25import android.net.NetworkUtils; 26import android.os.Binder; 27import android.os.Build.VERSION_CODES; 28import android.os.Handler; 29import android.os.HandlerThread; 30import android.os.IBinder; 31import android.os.INetworkActivityListener; 32import android.os.INetworkManagementService; 33import android.os.Looper; 34import android.os.Message; 35import android.os.Messenger; 36import android.os.RemoteException; 37import android.os.ServiceManager; 38import android.provider.Settings; 39import android.telephony.SubscriptionManager; 40import android.util.ArrayMap; 41import android.util.Log; 42 43import com.android.internal.net.VpnConfig; 44import com.android.internal.telephony.ITelephony; 45import com.android.internal.telephony.PhoneConstants; 46import com.android.internal.util.Protocol; 47 48import java.net.InetAddress; 49import java.util.concurrent.atomic.AtomicInteger; 50import java.util.HashMap; 51 52import libcore.net.event.NetworkEventDispatcher; 53 54/** 55 * Class that answers queries about the state of network connectivity. It also 56 * notifies applications when network connectivity changes. Get an instance 57 * of this class by calling 58 * {@link android.content.Context#getSystemService(String) Context.getSystemService(Context.CONNECTIVITY_SERVICE)}. 59 * <p> 60 * The primary responsibilities of this class are to: 61 * <ol> 62 * <li>Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)</li> 63 * <li>Send broadcast intents when network connectivity changes</li> 64 * <li>Attempt to "fail over" to another network when connectivity to a network 65 * is lost</li> 66 * <li>Provide an API that allows applications to query the coarse-grained or fine-grained 67 * state of the available networks</li> 68 * <li>Provide an API that allows applications to request and select networks for their data 69 * traffic</li> 70 * </ol> 71 */ 72public class ConnectivityManager { 73 private static final String TAG = "ConnectivityManager"; 74 75 /** 76 * A change in network connectivity has occurred. A default connection has either 77 * been established or lost. The NetworkInfo for the affected network is 78 * sent as an extra; it should be consulted to see what kind of 79 * connectivity event occurred. 80 * <p/> 81 * If this is a connection that was the result of failing over from a 82 * disconnected network, then the FAILOVER_CONNECTION boolean extra is 83 * set to true. 84 * <p/> 85 * For a loss of connectivity, if the connectivity manager is attempting 86 * to connect (or has already connected) to another network, the 87 * NetworkInfo for the new network is also passed as an extra. This lets 88 * any receivers of the broadcast know that they should not necessarily 89 * tell the user that no data traffic will be possible. Instead, the 90 * receiver should expect another broadcast soon, indicating either that 91 * the failover attempt succeeded (and so there is still overall data 92 * connectivity), or that the failover attempt failed, meaning that all 93 * connectivity has been lost. 94 * <p/> 95 * For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY 96 * is set to {@code true} if there are no connected networks at all. 97 */ 98 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 99 public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE"; 100 101 /** 102 * Identical to {@link #CONNECTIVITY_ACTION} broadcast, but sent without any 103 * historic {@link Settings.Global#CONNECTIVITY_CHANGE_DELAY}. 104 * 105 * @hide 106 */ 107 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 108 public static final String CONNECTIVITY_ACTION_IMMEDIATE = 109 "android.net.conn.CONNECTIVITY_CHANGE_IMMEDIATE"; 110 111 /** 112 * The lookup key for a {@link NetworkInfo} object. Retrieve with 113 * {@link android.content.Intent#getParcelableExtra(String)}. 114 * 115 * @deprecated Since {@link NetworkInfo} can vary based on UID, applications 116 * should always obtain network information through 117 * {@link #getActiveNetworkInfo()} or 118 * {@link #getAllNetworkInfo()}. 119 * @see #EXTRA_NETWORK_TYPE 120 */ 121 @Deprecated 122 public static final String EXTRA_NETWORK_INFO = "networkInfo"; 123 124 /** 125 * Network type which triggered a {@link #CONNECTIVITY_ACTION} broadcast. 126 * Can be used with {@link #getNetworkInfo(int)} to get {@link NetworkInfo} 127 * state based on the calling application. 128 * 129 * @see android.content.Intent#getIntExtra(String, int) 130 */ 131 public static final String EXTRA_NETWORK_TYPE = "networkType"; 132 133 /** 134 * The lookup key for a boolean that indicates whether a connect event 135 * is for a network to which the connectivity manager was failing over 136 * following a disconnect on another network. 137 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 138 */ 139 public static final String EXTRA_IS_FAILOVER = "isFailover"; 140 /** 141 * The lookup key for a {@link NetworkInfo} object. This is supplied when 142 * there is another network that it may be possible to connect to. Retrieve with 143 * {@link android.content.Intent#getParcelableExtra(String)}. 144 */ 145 public static final String EXTRA_OTHER_NETWORK_INFO = "otherNetwork"; 146 /** 147 * The lookup key for a boolean that indicates whether there is a 148 * complete lack of connectivity, i.e., no network is available. 149 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 150 */ 151 public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity"; 152 /** 153 * The lookup key for a string that indicates why an attempt to connect 154 * to a network failed. The string has no particular structure. It is 155 * intended to be used in notifications presented to users. Retrieve 156 * it with {@link android.content.Intent#getStringExtra(String)}. 157 */ 158 public static final String EXTRA_REASON = "reason"; 159 /** 160 * The lookup key for a string that provides optionally supplied 161 * extra information about the network state. The information 162 * may be passed up from the lower networking layers, and its 163 * meaning may be specific to a particular network type. Retrieve 164 * it with {@link android.content.Intent#getStringExtra(String)}. 165 */ 166 public static final String EXTRA_EXTRA_INFO = "extraInfo"; 167 /** 168 * The lookup key for an int that provides information about 169 * our connection to the internet at large. 0 indicates no connection, 170 * 100 indicates a great connection. Retrieve it with 171 * {@link android.content.Intent#getIntExtra(String, int)}. 172 * {@hide} 173 */ 174 public static final String EXTRA_INET_CONDITION = "inetCondition"; 175 176 /** 177 * Broadcast action to indicate the change of data activity status 178 * (idle or active) on a network in a recent period. 179 * The network becomes active when data transmission is started, or 180 * idle if there is no data transmission for a period of time. 181 * {@hide} 182 */ 183 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 184 public static final String ACTION_DATA_ACTIVITY_CHANGE = "android.net.conn.DATA_ACTIVITY_CHANGE"; 185 /** 186 * The lookup key for an enum that indicates the network device type on which this data activity 187 * change happens. 188 * {@hide} 189 */ 190 public static final String EXTRA_DEVICE_TYPE = "deviceType"; 191 /** 192 * The lookup key for a boolean that indicates the device is active or not. {@code true} means 193 * it is actively sending or receiving data and {@code false} means it is idle. 194 * {@hide} 195 */ 196 public static final String EXTRA_IS_ACTIVE = "isActive"; 197 /** 198 * The lookup key for a long that contains the timestamp (nanos) of the radio state change. 199 * {@hide} 200 */ 201 public static final String EXTRA_REALTIME_NS = "tsNanos"; 202 203 /** 204 * Broadcast Action: The setting for background data usage has changed 205 * values. Use {@link #getBackgroundDataSetting()} to get the current value. 206 * <p> 207 * If an application uses the network in the background, it should listen 208 * for this broadcast and stop using the background data if the value is 209 * {@code false}. 210 * <p> 211 * 212 * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability 213 * of background data depends on several combined factors, and 214 * this broadcast is no longer sent. Instead, when background 215 * data is unavailable, {@link #getActiveNetworkInfo()} will now 216 * appear disconnected. During first boot after a platform 217 * upgrade, this broadcast will be sent once if 218 * {@link #getBackgroundDataSetting()} was {@code false} before 219 * the upgrade. 220 */ 221 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 222 @Deprecated 223 public static final String ACTION_BACKGROUND_DATA_SETTING_CHANGED = 224 "android.net.conn.BACKGROUND_DATA_SETTING_CHANGED"; 225 226 /** 227 * Broadcast Action: The network connection may not be good 228 * uses {@code ConnectivityManager.EXTRA_INET_CONDITION} and 229 * {@code ConnectivityManager.EXTRA_NETWORK_INFO} to specify 230 * the network and it's condition. 231 * @hide 232 */ 233 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 234 public static final String INET_CONDITION_ACTION = 235 "android.net.conn.INET_CONDITION_ACTION"; 236 237 /** 238 * Broadcast Action: A tetherable connection has come or gone. 239 * Uses {@code ConnectivityManager.EXTRA_AVAILABLE_TETHER}, 240 * {@code ConnectivityManager.EXTRA_ACTIVE_TETHER} and 241 * {@code ConnectivityManager.EXTRA_ERRORED_TETHER} to indicate 242 * the current state of tethering. Each include a list of 243 * interface names in that state (may be empty). 244 * @hide 245 */ 246 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 247 public static final String ACTION_TETHER_STATE_CHANGED = 248 "android.net.conn.TETHER_STATE_CHANGED"; 249 250 /** 251 * @hide 252 * gives a String[] listing all the interfaces configured for 253 * tethering and currently available for tethering. 254 */ 255 public static final String EXTRA_AVAILABLE_TETHER = "availableArray"; 256 257 /** 258 * @hide 259 * gives a String[] listing all the interfaces currently tethered 260 * (ie, has dhcp support and packets potentially forwarded/NATed) 261 */ 262 public static final String EXTRA_ACTIVE_TETHER = "activeArray"; 263 264 /** 265 * @hide 266 * gives a String[] listing all the interfaces we tried to tether and 267 * failed. Use {@link #getLastTetherError} to find the error code 268 * for any interfaces listed here. 269 */ 270 public static final String EXTRA_ERRORED_TETHER = "erroredArray"; 271 272 /** 273 * Broadcast Action: The captive portal tracker has finished its test. 274 * Sent only while running Setup Wizard, in lieu of showing a user 275 * notification. 276 * @hide 277 */ 278 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 279 public static final String ACTION_CAPTIVE_PORTAL_TEST_COMPLETED = 280 "android.net.conn.CAPTIVE_PORTAL_TEST_COMPLETED"; 281 /** 282 * The lookup key for a boolean that indicates whether a captive portal was detected. 283 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 284 * @hide 285 */ 286 public static final String EXTRA_IS_CAPTIVE_PORTAL = "captivePortal"; 287 288 /** 289 * The absence of a connection type. 290 * @hide 291 */ 292 public static final int TYPE_NONE = -1; 293 294 /** 295 * The Mobile data connection. When active, all data traffic 296 * will use this network type's interface by default 297 * (it has a default route) 298 */ 299 public static final int TYPE_MOBILE = 0; 300 /** 301 * The WIFI data connection. When active, all data traffic 302 * will use this network type's interface by default 303 * (it has a default route). 304 */ 305 public static final int TYPE_WIFI = 1; 306 /** 307 * An MMS-specific Mobile data connection. This network type may use the 308 * same network interface as {@link #TYPE_MOBILE} or it may use a different 309 * one. This is used by applications needing to talk to the carrier's 310 * Multimedia Messaging Service servers. 311 */ 312 public static final int TYPE_MOBILE_MMS = 2; 313 /** 314 * A SUPL-specific Mobile data connection. This network type may use the 315 * same network interface as {@link #TYPE_MOBILE} or it may use a different 316 * one. This is used by applications needing to talk to the carrier's 317 * Secure User Plane Location servers for help locating the device. 318 */ 319 public static final int TYPE_MOBILE_SUPL = 3; 320 /** 321 * A DUN-specific Mobile data connection. This network type may use the 322 * same network interface as {@link #TYPE_MOBILE} or it may use a different 323 * one. This is sometimes by the system when setting up an upstream connection 324 * for tethering so that the carrier is aware of DUN traffic. 325 */ 326 public static final int TYPE_MOBILE_DUN = 4; 327 /** 328 * A High Priority Mobile data connection. This network type uses the 329 * same network interface as {@link #TYPE_MOBILE} but the routing setup 330 * is different. Only requesting processes will have access to the 331 * Mobile DNS servers and only IP's explicitly requested via {@link #requestRouteToHost} 332 * will route over this interface if no default route exists. 333 */ 334 public static final int TYPE_MOBILE_HIPRI = 5; 335 /** 336 * The WiMAX data connection. When active, all data traffic 337 * will use this network type's interface by default 338 * (it has a default route). 339 */ 340 public static final int TYPE_WIMAX = 6; 341 342 /** 343 * The Bluetooth data connection. When active, all data traffic 344 * will use this network type's interface by default 345 * (it has a default route). 346 */ 347 public static final int TYPE_BLUETOOTH = 7; 348 349 /** 350 * Dummy data connection. This should not be used on shipping devices. 351 */ 352 public static final int TYPE_DUMMY = 8; 353 354 /** 355 * The Ethernet data connection. When active, all data traffic 356 * will use this network type's interface by default 357 * (it has a default route). 358 */ 359 public static final int TYPE_ETHERNET = 9; 360 361 /** 362 * Over the air Administration. 363 * {@hide} 364 */ 365 public static final int TYPE_MOBILE_FOTA = 10; 366 367 /** 368 * IP Multimedia Subsystem. 369 * {@hide} 370 */ 371 public static final int TYPE_MOBILE_IMS = 11; 372 373 /** 374 * Carrier Branded Services. 375 * {@hide} 376 */ 377 public static final int TYPE_MOBILE_CBS = 12; 378 379 /** 380 * A Wi-Fi p2p connection. Only requesting processes will have access to 381 * the peers connected. 382 * {@hide} 383 */ 384 public static final int TYPE_WIFI_P2P = 13; 385 386 /** 387 * The network to use for initially attaching to the network 388 * {@hide} 389 */ 390 public static final int TYPE_MOBILE_IA = 14; 391 392/** 393 * Emergency PDN connection for emergency calls 394 * {@hide} 395 */ 396 public static final int TYPE_MOBILE_EMERGENCY = 15; 397 398 /** 399 * The network that uses proxy to achieve connectivity. 400 * {@hide} 401 */ 402 public static final int TYPE_PROXY = 16; 403 404 /** 405 * A virtual network using one or more native bearers. 406 * It may or may not be providing security services. 407 */ 408 public static final int TYPE_VPN = 17; 409 410 /** {@hide} */ 411 public static final int MAX_RADIO_TYPE = TYPE_VPN; 412 413 /** {@hide} */ 414 public static final int MAX_NETWORK_TYPE = TYPE_VPN; 415 416 /** 417 * If you want to set the default network preference,you can directly 418 * change the networkAttributes array in framework's config.xml. 419 * 420 * @deprecated Since we support so many more networks now, the single 421 * network default network preference can't really express 422 * the hierarchy. Instead, the default is defined by the 423 * networkAttributes in config.xml. You can determine 424 * the current value by calling {@link #getNetworkPreference()} 425 * from an App. 426 */ 427 @Deprecated 428 public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI; 429 430 /** 431 * @hide 432 */ 433 public final static int REQUEST_ID_UNSET = 0; 434 435 /** 436 * A NetID indicating no Network is selected. 437 * Keep in sync with bionic/libc/dns/include/resolv_netid.h 438 * @hide 439 */ 440 public static final int NETID_UNSET = 0; 441 442 private final IConnectivityManager mService; 443 /** 444 * A kludge to facilitate static access where a Context pointer isn't available, like in the 445 * case of the static set/getProcessDefaultNetwork methods and from the Network class. 446 * TODO: Remove this after deprecating the static methods in favor of non-static methods or 447 * methods that take a Context argument. 448 */ 449 private static ConnectivityManager sInstance; 450 451 private INetworkManagementService mNMService; 452 453 /** 454 * Tests if a given integer represents a valid network type. 455 * @param networkType the type to be tested 456 * @return a boolean. {@code true} if the type is valid, else {@code false} 457 */ 458 public static boolean isNetworkTypeValid(int networkType) { 459 return networkType >= 0 && networkType <= MAX_NETWORK_TYPE; 460 } 461 462 /** 463 * Returns a non-localized string representing a given network type. 464 * ONLY used for debugging output. 465 * @param type the type needing naming 466 * @return a String for the given type, or a string version of the type ("87") 467 * if no name is known. 468 * {@hide} 469 */ 470 public static String getNetworkTypeName(int type) { 471 switch (type) { 472 case TYPE_MOBILE: 473 return "MOBILE"; 474 case TYPE_WIFI: 475 return "WIFI"; 476 case TYPE_MOBILE_MMS: 477 return "MOBILE_MMS"; 478 case TYPE_MOBILE_SUPL: 479 return "MOBILE_SUPL"; 480 case TYPE_MOBILE_DUN: 481 return "MOBILE_DUN"; 482 case TYPE_MOBILE_HIPRI: 483 return "MOBILE_HIPRI"; 484 case TYPE_WIMAX: 485 return "WIMAX"; 486 case TYPE_BLUETOOTH: 487 return "BLUETOOTH"; 488 case TYPE_DUMMY: 489 return "DUMMY"; 490 case TYPE_ETHERNET: 491 return "ETHERNET"; 492 case TYPE_MOBILE_FOTA: 493 return "MOBILE_FOTA"; 494 case TYPE_MOBILE_IMS: 495 return "MOBILE_IMS"; 496 case TYPE_MOBILE_CBS: 497 return "MOBILE_CBS"; 498 case TYPE_WIFI_P2P: 499 return "WIFI_P2P"; 500 case TYPE_MOBILE_IA: 501 return "MOBILE_IA"; 502 case TYPE_MOBILE_EMERGENCY: 503 return "MOBILE_EMERGENCY"; 504 case TYPE_PROXY: 505 return "PROXY"; 506 case TYPE_VPN: 507 return "VPN"; 508 default: 509 return Integer.toString(type); 510 } 511 } 512 513 /** 514 * Checks if a given type uses the cellular data connection. 515 * This should be replaced in the future by a network property. 516 * @param networkType the type to check 517 * @return a boolean - {@code true} if uses cellular network, else {@code false} 518 * {@hide} 519 */ 520 public static boolean isNetworkTypeMobile(int networkType) { 521 switch (networkType) { 522 case TYPE_MOBILE: 523 case TYPE_MOBILE_MMS: 524 case TYPE_MOBILE_SUPL: 525 case TYPE_MOBILE_DUN: 526 case TYPE_MOBILE_HIPRI: 527 case TYPE_MOBILE_FOTA: 528 case TYPE_MOBILE_IMS: 529 case TYPE_MOBILE_CBS: 530 case TYPE_MOBILE_IA: 531 case TYPE_MOBILE_EMERGENCY: 532 return true; 533 default: 534 return false; 535 } 536 } 537 538 /** 539 * Checks if the given network type is backed by a Wi-Fi radio. 540 * 541 * @hide 542 */ 543 public static boolean isNetworkTypeWifi(int networkType) { 544 switch (networkType) { 545 case TYPE_WIFI: 546 case TYPE_WIFI_P2P: 547 return true; 548 default: 549 return false; 550 } 551 } 552 553 /** 554 * Specifies the preferred network type. When the device has more 555 * than one type available the preferred network type will be used. 556 * 557 * @param preference the network type to prefer over all others. It is 558 * unspecified what happens to the old preferred network in the 559 * overall ordering. 560 * @deprecated Functionality has been removed as it no longer makes sense, 561 * with many more than two networks - we'd need an array to express 562 * preference. Instead we use dynamic network properties of 563 * the networks to describe their precedence. 564 */ 565 public void setNetworkPreference(int preference) { 566 } 567 568 /** 569 * Retrieves the current preferred network type. 570 * 571 * @return an integer representing the preferred network type 572 * 573 * <p>This method requires the caller to hold the permission 574 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 575 * @deprecated Functionality has been removed as it no longer makes sense, 576 * with many more than two networks - we'd need an array to express 577 * preference. Instead we use dynamic network properties of 578 * the networks to describe their precedence. 579 */ 580 public int getNetworkPreference() { 581 return TYPE_NONE; 582 } 583 584 /** 585 * Returns details about the currently active default data network. When 586 * connected, this network is the default route for outgoing connections. 587 * You should always check {@link NetworkInfo#isConnected()} before initiating 588 * network traffic. This may return {@code null} when there is no default 589 * network. 590 * 591 * @return a {@link NetworkInfo} object for the current default network 592 * or {@code null} if no default network is currently active 593 * 594 * <p>This method requires the caller to hold the permission 595 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 596 */ 597 public NetworkInfo getActiveNetworkInfo() { 598 try { 599 return mService.getActiveNetworkInfo(); 600 } catch (RemoteException e) { 601 return null; 602 } 603 } 604 605 /** 606 * Returns details about the currently active default data network 607 * for a given uid. This is for internal use only to avoid spying 608 * other apps. 609 * 610 * @return a {@link NetworkInfo} object for the current default network 611 * for the given uid or {@code null} if no default network is 612 * available for the specified uid. 613 * 614 * <p>This method requires the caller to hold the permission 615 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL} 616 * {@hide} 617 */ 618 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 619 try { 620 return mService.getActiveNetworkInfoForUid(uid); 621 } catch (RemoteException e) { 622 return null; 623 } 624 } 625 626 /** 627 * Returns connection status information about a particular 628 * network type. 629 * 630 * @param networkType integer specifying which networkType in 631 * which you're interested. 632 * @return a {@link NetworkInfo} object for the requested 633 * network type or {@code null} if the type is not 634 * supported by the device. 635 * 636 * <p>This method requires the caller to hold the permission 637 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 638 */ 639 public NetworkInfo getNetworkInfo(int networkType) { 640 try { 641 return mService.getNetworkInfo(networkType); 642 } catch (RemoteException e) { 643 return null; 644 } 645 } 646 647 /** 648 * Returns connection status information about a particular 649 * Network. 650 * 651 * @param network {@link Network} specifying which network 652 * in which you're interested. 653 * @return a {@link NetworkInfo} object for the requested 654 * network or {@code null} if the {@code Network} 655 * is not valid. 656 * 657 * <p>This method requires the caller to hold the permission 658 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 659 */ 660 public NetworkInfo getNetworkInfo(Network network) { 661 try { 662 return mService.getNetworkInfoForNetwork(network); 663 } catch (RemoteException e) { 664 return null; 665 } 666 } 667 668 /** 669 * Returns connection status information about all network 670 * types supported by the device. 671 * 672 * @return an array of {@link NetworkInfo} objects. Check each 673 * {@link NetworkInfo#getType} for which type each applies. 674 * 675 * <p>This method requires the caller to hold the permission 676 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 677 */ 678 public NetworkInfo[] getAllNetworkInfo() { 679 try { 680 return mService.getAllNetworkInfo(); 681 } catch (RemoteException e) { 682 return null; 683 } 684 } 685 686 /** 687 * Returns the {@link Network} object currently serving a given type, or 688 * null if the given type is not connected. 689 * 690 * <p>This method requires the caller to hold the permission 691 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 692 * 693 * @hide 694 */ 695 public Network getNetworkForType(int networkType) { 696 try { 697 return mService.getNetworkForType(networkType); 698 } catch (RemoteException e) { 699 return null; 700 } 701 } 702 703 /** 704 * Returns an array of all {@link Network} currently tracked by the 705 * framework. 706 * 707 * @return an array of {@link Network} objects. 708 * 709 * <p>This method requires the caller to hold the permission 710 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 711 */ 712 public Network[] getAllNetworks() { 713 try { 714 return mService.getAllNetworks(); 715 } catch (RemoteException e) { 716 return null; 717 } 718 } 719 720 /** 721 * Returns an array of of {@link NetworkCapabilities} objects, representing 722 * the Networks that applications run by the given user will use by default. 723 * @hide 724 */ 725 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 726 try { 727 return mService.getDefaultNetworkCapabilitiesForUser(userId); 728 } catch (RemoteException e) { 729 return null; 730 } 731 } 732 733 /** 734 * Returns details about the Provisioning or currently active default data network. When 735 * connected, this network is the default route for outgoing connections. 736 * You should always check {@link NetworkInfo#isConnected()} before initiating 737 * network traffic. This may return {@code null} when there is no default 738 * network. 739 * 740 * @return a {@link NetworkInfo} object for the current default network 741 * or {@code null} if no default network is currently active 742 * 743 * <p>This method requires the caller to hold the permission 744 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 745 * 746 * {@hide} 747 */ 748 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 749 try { 750 return mService.getProvisioningOrActiveNetworkInfo(); 751 } catch (RemoteException e) { 752 return null; 753 } 754 } 755 756 /** 757 * Returns the IP information for the current default network. 758 * 759 * @return a {@link LinkProperties} object describing the IP info 760 * for the current default network, or {@code null} if there 761 * is no current default network. 762 * 763 * <p>This method requires the caller to hold the permission 764 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 765 * {@hide} 766 */ 767 public LinkProperties getActiveLinkProperties() { 768 try { 769 return mService.getActiveLinkProperties(); 770 } catch (RemoteException e) { 771 return null; 772 } 773 } 774 775 /** 776 * Returns the IP information for a given network type. 777 * 778 * @param networkType the network type of interest. 779 * @return a {@link LinkProperties} object describing the IP info 780 * for the given networkType, or {@code null} if there is 781 * no current default network. 782 * 783 * <p>This method requires the caller to hold the permission 784 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 785 * {@hide} 786 */ 787 public LinkProperties getLinkProperties(int networkType) { 788 try { 789 return mService.getLinkPropertiesForType(networkType); 790 } catch (RemoteException e) { 791 return null; 792 } 793 } 794 795 /** 796 * Get the {@link LinkProperties} for the given {@link Network}. This 797 * will return {@code null} if the network is unknown. 798 * 799 * @param network The {@link Network} object identifying the network in question. 800 * @return The {@link LinkProperties} for the network, or {@code null}. 801 **/ 802 public LinkProperties getLinkProperties(Network network) { 803 try { 804 return mService.getLinkProperties(network); 805 } catch (RemoteException e) { 806 return null; 807 } 808 } 809 810 /** 811 * Get the {@link NetworkCapabilities} for the given {@link Network}. This 812 * will return {@code null} if the network is unknown. 813 * 814 * @param network The {@link Network} object identifying the network in question. 815 * @return The {@link NetworkCapabilities} for the network, or {@code null}. 816 */ 817 public NetworkCapabilities getNetworkCapabilities(Network network) { 818 try { 819 return mService.getNetworkCapabilities(network); 820 } catch (RemoteException e) { 821 return null; 822 } 823 } 824 825 /** 826 * Tells each network type to set its radio power state as directed. 827 * 828 * @param turnOn a boolean, {@code true} to turn the radios on, 829 * {@code false} to turn them off. 830 * @return a boolean, {@code true} indicating success. All network types 831 * will be tried, even if some fail. 832 * 833 * <p>This method requires the caller to hold the permission 834 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 835 * {@hide} 836 */ 837// TODO - check for any callers and remove 838// public boolean setRadios(boolean turnOn) { 839// try { 840// return mService.setRadios(turnOn); 841// } catch (RemoteException e) { 842// return false; 843// } 844// } 845 846 /** 847 * Tells a given networkType to set its radio power state as directed. 848 * 849 * @param networkType the int networkType of interest. 850 * @param turnOn a boolean, {@code true} to turn the radio on, 851 * {@code} false to turn it off. 852 * @return a boolean, {@code true} indicating success. 853 * 854 * <p>This method requires the caller to hold the permission 855 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 856 * {@hide} 857 */ 858// TODO - check for any callers and remove 859// public boolean setRadio(int networkType, boolean turnOn) { 860// try { 861// return mService.setRadio(networkType, turnOn); 862// } catch (RemoteException e) { 863// return false; 864// } 865// } 866 867 /** 868 * Tells the underlying networking system that the caller wants to 869 * begin using the named feature. The interpretation of {@code feature} 870 * is completely up to each networking implementation. 871 * <p>This method requires the caller to hold the permission 872 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 873 * @param networkType specifies which network the request pertains to 874 * @param feature the name of the feature to be used 875 * @return an integer value representing the outcome of the request. 876 * The interpretation of this value is specific to each networking 877 * implementation+feature combination, except that the value {@code -1} 878 * always indicates failure. 879 * 880 * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. 881 */ 882 public int startUsingNetworkFeature(int networkType, String feature) { 883 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 884 if (netCap == null) { 885 Log.d(TAG, "Can't satisfy startUsingNetworkFeature for " + networkType + ", " + 886 feature); 887 return PhoneConstants.APN_REQUEST_FAILED; 888 } 889 890 NetworkRequest request = null; 891 synchronized (sLegacyRequests) { 892 LegacyRequest l = sLegacyRequests.get(netCap); 893 if (l != null) { 894 Log.d(TAG, "renewing startUsingNetworkFeature request " + l.networkRequest); 895 renewRequestLocked(l); 896 if (l.currentNetwork != null) { 897 return PhoneConstants.APN_ALREADY_ACTIVE; 898 } else { 899 return PhoneConstants.APN_REQUEST_STARTED; 900 } 901 } 902 903 request = requestNetworkForFeatureLocked(netCap); 904 } 905 if (request != null) { 906 Log.d(TAG, "starting startUsingNetworkFeature for request " + request); 907 return PhoneConstants.APN_REQUEST_STARTED; 908 } else { 909 Log.d(TAG, " request Failed"); 910 return PhoneConstants.APN_REQUEST_FAILED; 911 } 912 } 913 914 /** 915 * Tells the underlying networking system that the caller is finished 916 * using the named feature. The interpretation of {@code feature} 917 * is completely up to each networking implementation. 918 * <p>This method requires the caller to hold the permission 919 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 920 * @param networkType specifies which network the request pertains to 921 * @param feature the name of the feature that is no longer needed 922 * @return an integer value representing the outcome of the request. 923 * The interpretation of this value is specific to each networking 924 * implementation+feature combination, except that the value {@code -1} 925 * always indicates failure. 926 * 927 * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. 928 */ 929 public int stopUsingNetworkFeature(int networkType, String feature) { 930 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 931 if (netCap == null) { 932 Log.d(TAG, "Can't satisfy stopUsingNetworkFeature for " + networkType + ", " + 933 feature); 934 return -1; 935 } 936 937 if (removeRequestForFeature(netCap)) { 938 Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature); 939 } 940 return 1; 941 } 942 943 /** 944 * Removes the NET_CAPABILITY_NOT_RESTRICTED capability from the given 945 * NetworkCapabilities object if all the capabilities it provides are 946 * typically provided by restricted networks. 947 * 948 * TODO: consider: 949 * - Moving to NetworkCapabilities 950 * - Renaming it to guessRestrictedCapability and make it set the 951 * restricted capability bit in addition to clearing it. 952 * @hide 953 */ 954 public static void maybeMarkCapabilitiesRestricted(NetworkCapabilities nc) { 955 for (int capability : nc.getCapabilities()) { 956 switch (capability) { 957 case NetworkCapabilities.NET_CAPABILITY_CBS: 958 case NetworkCapabilities.NET_CAPABILITY_DUN: 959 case NetworkCapabilities.NET_CAPABILITY_EIMS: 960 case NetworkCapabilities.NET_CAPABILITY_FOTA: 961 case NetworkCapabilities.NET_CAPABILITY_IA: 962 case NetworkCapabilities.NET_CAPABILITY_IMS: 963 case NetworkCapabilities.NET_CAPABILITY_RCS: 964 case NetworkCapabilities.NET_CAPABILITY_XCAP: 965 case NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED: //there by default 966 continue; 967 default: 968 // At least one capability usually provided by unrestricted 969 // networks. Conclude that this network is unrestricted. 970 return; 971 } 972 } 973 // All the capabilities are typically provided by restricted networks. 974 // Conclude that this network is restricted. 975 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 976 } 977 978 private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) { 979 if (networkType == TYPE_MOBILE) { 980 int cap = -1; 981 if ("enableMMS".equals(feature)) { 982 cap = NetworkCapabilities.NET_CAPABILITY_MMS; 983 } else if ("enableSUPL".equals(feature)) { 984 cap = NetworkCapabilities.NET_CAPABILITY_SUPL; 985 } else if ("enableDUN".equals(feature) || "enableDUNAlways".equals(feature)) { 986 cap = NetworkCapabilities.NET_CAPABILITY_DUN; 987 } else if ("enableHIPRI".equals(feature)) { 988 cap = NetworkCapabilities.NET_CAPABILITY_INTERNET; 989 } else if ("enableFOTA".equals(feature)) { 990 cap = NetworkCapabilities.NET_CAPABILITY_FOTA; 991 } else if ("enableIMS".equals(feature)) { 992 cap = NetworkCapabilities.NET_CAPABILITY_IMS; 993 } else if ("enableCBS".equals(feature)) { 994 cap = NetworkCapabilities.NET_CAPABILITY_CBS; 995 } else { 996 return null; 997 } 998 NetworkCapabilities netCap = new NetworkCapabilities(); 999 netCap.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR).addCapability(cap); 1000 maybeMarkCapabilitiesRestricted(netCap); 1001 return netCap; 1002 } else if (networkType == TYPE_WIFI) { 1003 if ("p2p".equals(feature)) { 1004 NetworkCapabilities netCap = new NetworkCapabilities(); 1005 netCap.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1006 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P); 1007 maybeMarkCapabilitiesRestricted(netCap); 1008 return netCap; 1009 } 1010 } 1011 return null; 1012 } 1013 1014 /** 1015 * Guess what the network request was trying to say so that the resulting 1016 * network is accessible via the legacy (deprecated) API such as 1017 * requestRouteToHost. 1018 * This means we should try to be fairly preceise about transport and 1019 * capability but ignore things such as networkSpecifier. 1020 * If the request has more than one transport or capability it doesn't 1021 * match the old legacy requests (they selected only single transport/capability) 1022 * so this function cannot map the request to a single legacy type and 1023 * the resulting network will not be available to the legacy APIs. 1024 * 1025 * TODO - This should be removed when the legacy APIs are removed. 1026 */ 1027 private int inferLegacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1028 if (netCap == null) { 1029 return TYPE_NONE; 1030 } 1031 1032 if (!netCap.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { 1033 return TYPE_NONE; 1034 } 1035 1036 String type = null; 1037 int result = TYPE_NONE; 1038 1039 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1040 type = "enableCBS"; 1041 result = TYPE_MOBILE_CBS; 1042 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1043 type = "enableIMS"; 1044 result = TYPE_MOBILE_IMS; 1045 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1046 type = "enableFOTA"; 1047 result = TYPE_MOBILE_FOTA; 1048 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1049 type = "enableDUN"; 1050 result = TYPE_MOBILE_DUN; 1051 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1052 type = "enableSUPL"; 1053 result = TYPE_MOBILE_SUPL; 1054 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1055 type = "enableMMS"; 1056 result = TYPE_MOBILE_MMS; 1057 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1058 type = "enableHIPRI"; 1059 result = TYPE_MOBILE_HIPRI; 1060 } 1061 if (type != null) { 1062 NetworkCapabilities testCap = networkCapabilitiesForFeature(TYPE_MOBILE, type); 1063 if (testCap.equalsNetCapabilities(netCap) && testCap.equalsTransportTypes(netCap)) { 1064 return result; 1065 } 1066 } 1067 return TYPE_NONE; 1068 } 1069 1070 private int legacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1071 if (netCap == null) return TYPE_NONE; 1072 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1073 return TYPE_MOBILE_CBS; 1074 } 1075 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1076 return TYPE_MOBILE_IMS; 1077 } 1078 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1079 return TYPE_MOBILE_FOTA; 1080 } 1081 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1082 return TYPE_MOBILE_DUN; 1083 } 1084 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1085 return TYPE_MOBILE_SUPL; 1086 } 1087 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1088 return TYPE_MOBILE_MMS; 1089 } 1090 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1091 return TYPE_MOBILE_HIPRI; 1092 } 1093 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P)) { 1094 return TYPE_WIFI_P2P; 1095 } 1096 return TYPE_NONE; 1097 } 1098 1099 private static class LegacyRequest { 1100 NetworkCapabilities networkCapabilities; 1101 NetworkRequest networkRequest; 1102 int expireSequenceNumber; 1103 Network currentNetwork; 1104 int delay = -1; 1105 1106 private void clearDnsBinding() { 1107 if (currentNetwork != null) { 1108 currentNetwork = null; 1109 setProcessDefaultNetworkForHostResolution(null); 1110 } 1111 } 1112 1113 NetworkCallback networkCallback = new NetworkCallback() { 1114 @Override 1115 public void onAvailable(Network network) { 1116 currentNetwork = network; 1117 Log.d(TAG, "startUsingNetworkFeature got Network:" + network); 1118 setProcessDefaultNetworkForHostResolution(network); 1119 } 1120 @Override 1121 public void onLost(Network network) { 1122 if (network.equals(currentNetwork)) clearDnsBinding(); 1123 Log.d(TAG, "startUsingNetworkFeature lost Network:" + network); 1124 } 1125 }; 1126 } 1127 1128 private static HashMap<NetworkCapabilities, LegacyRequest> sLegacyRequests = 1129 new HashMap<NetworkCapabilities, LegacyRequest>(); 1130 1131 private NetworkRequest findRequestForFeature(NetworkCapabilities netCap) { 1132 synchronized (sLegacyRequests) { 1133 LegacyRequest l = sLegacyRequests.get(netCap); 1134 if (l != null) return l.networkRequest; 1135 } 1136 return null; 1137 } 1138 1139 private void renewRequestLocked(LegacyRequest l) { 1140 l.expireSequenceNumber++; 1141 Log.d(TAG, "renewing request to seqNum " + l.expireSequenceNumber); 1142 sendExpireMsgForFeature(l.networkCapabilities, l.expireSequenceNumber, l.delay); 1143 } 1144 1145 private void expireRequest(NetworkCapabilities netCap, int sequenceNum) { 1146 int ourSeqNum = -1; 1147 synchronized (sLegacyRequests) { 1148 LegacyRequest l = sLegacyRequests.get(netCap); 1149 if (l == null) return; 1150 ourSeqNum = l.expireSequenceNumber; 1151 if (l.expireSequenceNumber == sequenceNum) removeRequestForFeature(netCap); 1152 } 1153 Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum); 1154 } 1155 1156 private NetworkRequest requestNetworkForFeatureLocked(NetworkCapabilities netCap) { 1157 int delay = -1; 1158 int type = legacyTypeForNetworkCapabilities(netCap); 1159 try { 1160 delay = mService.getRestoreDefaultNetworkDelay(type); 1161 } catch (RemoteException e) {} 1162 LegacyRequest l = new LegacyRequest(); 1163 l.networkCapabilities = netCap; 1164 l.delay = delay; 1165 l.expireSequenceNumber = 0; 1166 l.networkRequest = sendRequestForNetwork(netCap, l.networkCallback, 0, 1167 REQUEST, type); 1168 if (l.networkRequest == null) return null; 1169 sLegacyRequests.put(netCap, l); 1170 sendExpireMsgForFeature(netCap, l.expireSequenceNumber, delay); 1171 return l.networkRequest; 1172 } 1173 1174 private void sendExpireMsgForFeature(NetworkCapabilities netCap, int seqNum, int delay) { 1175 if (delay >= 0) { 1176 Log.d(TAG, "sending expire msg with seqNum " + seqNum + " and delay " + delay); 1177 Message msg = sCallbackHandler.obtainMessage(EXPIRE_LEGACY_REQUEST, seqNum, 0, netCap); 1178 sCallbackHandler.sendMessageDelayed(msg, delay); 1179 } 1180 } 1181 1182 private boolean removeRequestForFeature(NetworkCapabilities netCap) { 1183 final LegacyRequest l; 1184 synchronized (sLegacyRequests) { 1185 l = sLegacyRequests.remove(netCap); 1186 } 1187 if (l == null) return false; 1188 unregisterNetworkCallback(l.networkCallback); 1189 l.clearDnsBinding(); 1190 return true; 1191 } 1192 1193 /** 1194 * Ensure that a network route exists to deliver traffic to the specified 1195 * host via the specified network interface. An attempt to add a route that 1196 * already exists is ignored, but treated as successful. 1197 * <p>This method requires the caller to hold the permission 1198 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1199 * @param networkType the type of the network over which traffic to the specified 1200 * host is to be routed 1201 * @param hostAddress the IP address of the host to which the route is desired 1202 * @return {@code true} on success, {@code false} on failure 1203 * 1204 * @deprecated Deprecated in favor of the {@link #requestNetwork}, 1205 * {@link #bindProcessToNetwork} and {@link Network#getSocketFactory} api. 1206 */ 1207 public boolean requestRouteToHost(int networkType, int hostAddress) { 1208 return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress)); 1209 } 1210 1211 /** 1212 * Ensure that a network route exists to deliver traffic to the specified 1213 * host via the specified network interface. An attempt to add a route that 1214 * already exists is ignored, but treated as successful. 1215 * <p>This method requires the caller to hold the permission 1216 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1217 * @param networkType the type of the network over which traffic to the specified 1218 * host is to be routed 1219 * @param hostAddress the IP address of the host to which the route is desired 1220 * @return {@code true} on success, {@code false} on failure 1221 * @hide 1222 * @deprecated Deprecated in favor of the {@link #requestNetwork} and 1223 * {@link #bindProcessToNetwork} api. 1224 */ 1225 public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) { 1226 try { 1227 return mService.requestRouteToHostAddress(networkType, hostAddress.getAddress()); 1228 } catch (RemoteException e) { 1229 return false; 1230 } 1231 } 1232 1233 /** 1234 * Returns the value of the setting for background data usage. If false, 1235 * applications should not use the network if the application is not in the 1236 * foreground. Developers should respect this setting, and check the value 1237 * of this before performing any background data operations. 1238 * <p> 1239 * All applications that have background services that use the network 1240 * should listen to {@link #ACTION_BACKGROUND_DATA_SETTING_CHANGED}. 1241 * <p> 1242 * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability of 1243 * background data depends on several combined factors, and this method will 1244 * always return {@code true}. Instead, when background data is unavailable, 1245 * {@link #getActiveNetworkInfo()} will now appear disconnected. 1246 * 1247 * @return Whether background data usage is allowed. 1248 */ 1249 @Deprecated 1250 public boolean getBackgroundDataSetting() { 1251 // assume that background data is allowed; final authority is 1252 // NetworkInfo which may be blocked. 1253 return true; 1254 } 1255 1256 /** 1257 * Sets the value of the setting for background data usage. 1258 * 1259 * @param allowBackgroundData Whether an application should use data while 1260 * it is in the background. 1261 * 1262 * @attr ref android.Manifest.permission#CHANGE_BACKGROUND_DATA_SETTING 1263 * @see #getBackgroundDataSetting() 1264 * @hide 1265 */ 1266 @Deprecated 1267 public void setBackgroundDataSetting(boolean allowBackgroundData) { 1268 // ignored 1269 } 1270 1271 /** 1272 * Return quota status for the current active network, or {@code null} if no 1273 * network is active. Quota status can change rapidly, so these values 1274 * shouldn't be cached. 1275 * 1276 * <p>This method requires the caller to hold the permission 1277 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1278 * 1279 * @hide 1280 */ 1281 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1282 try { 1283 return mService.getActiveNetworkQuotaInfo(); 1284 } catch (RemoteException e) { 1285 return null; 1286 } 1287 } 1288 1289 /** 1290 * @hide 1291 * @deprecated Talk to TelephonyManager directly 1292 */ 1293 public boolean getMobileDataEnabled() { 1294 IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE); 1295 if (b != null) { 1296 try { 1297 ITelephony it = ITelephony.Stub.asInterface(b); 1298 int subId = SubscriptionManager.getDefaultDataSubId(); 1299 Log.d("ConnectivityManager", "getMobileDataEnabled()+ subId=" + subId); 1300 boolean retVal = it.getDataEnabled(subId); 1301 Log.d("ConnectivityManager", "getMobileDataEnabled()- subId=" + subId 1302 + " retVal=" + retVal); 1303 return retVal; 1304 } catch (RemoteException e) { } 1305 } 1306 Log.d("ConnectivityManager", "getMobileDataEnabled()- remote exception retVal=false"); 1307 return false; 1308 } 1309 1310 /** 1311 * Callback for use with {@link ConnectivityManager#addDefaultNetworkActiveListener} 1312 * to find out when the system default network has gone in to a high power state. 1313 */ 1314 public interface OnNetworkActiveListener { 1315 /** 1316 * Called on the main thread of the process to report that the current data network 1317 * has become active, and it is now a good time to perform any pending network 1318 * operations. Note that this listener only tells you when the network becomes 1319 * active; if at any other time you want to know whether it is active (and thus okay 1320 * to initiate network traffic), you can retrieve its instantaneous state with 1321 * {@link ConnectivityManager#isDefaultNetworkActive}. 1322 */ 1323 public void onNetworkActive(); 1324 } 1325 1326 private INetworkManagementService getNetworkManagementService() { 1327 synchronized (this) { 1328 if (mNMService != null) { 1329 return mNMService; 1330 } 1331 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1332 mNMService = INetworkManagementService.Stub.asInterface(b); 1333 return mNMService; 1334 } 1335 } 1336 1337 private final ArrayMap<OnNetworkActiveListener, INetworkActivityListener> 1338 mNetworkActivityListeners 1339 = new ArrayMap<OnNetworkActiveListener, INetworkActivityListener>(); 1340 1341 /** 1342 * Start listening to reports when the system's default data network is active, meaning it is 1343 * a good time to perform network traffic. Use {@link #isDefaultNetworkActive()} 1344 * to determine the current state of the system's default network after registering the 1345 * listener. 1346 * <p> 1347 * If the process default network has been set with 1348 * {@link ConnectivityManager#bindProcessToNetwork} this function will not 1349 * reflect the process's default, but the system default. 1350 * 1351 * @param l The listener to be told when the network is active. 1352 */ 1353 public void addDefaultNetworkActiveListener(final OnNetworkActiveListener l) { 1354 INetworkActivityListener rl = new INetworkActivityListener.Stub() { 1355 @Override 1356 public void onNetworkActive() throws RemoteException { 1357 l.onNetworkActive(); 1358 } 1359 }; 1360 1361 try { 1362 getNetworkManagementService().registerNetworkActivityListener(rl); 1363 mNetworkActivityListeners.put(l, rl); 1364 } catch (RemoteException e) { 1365 } 1366 } 1367 1368 /** 1369 * Remove network active listener previously registered with 1370 * {@link #addDefaultNetworkActiveListener}. 1371 * 1372 * @param l Previously registered listener. 1373 */ 1374 public void removeDefaultNetworkActiveListener(OnNetworkActiveListener l) { 1375 INetworkActivityListener rl = mNetworkActivityListeners.get(l); 1376 if (rl == null) { 1377 throw new IllegalArgumentException("Listener not registered: " + l); 1378 } 1379 try { 1380 getNetworkManagementService().unregisterNetworkActivityListener(rl); 1381 } catch (RemoteException e) { 1382 } 1383 } 1384 1385 /** 1386 * Return whether the data network is currently active. An active network means that 1387 * it is currently in a high power state for performing data transmission. On some 1388 * types of networks, it may be expensive to move and stay in such a state, so it is 1389 * more power efficient to batch network traffic together when the radio is already in 1390 * this state. This method tells you whether right now is currently a good time to 1391 * initiate network traffic, as the network is already active. 1392 */ 1393 public boolean isDefaultNetworkActive() { 1394 try { 1395 return getNetworkManagementService().isNetworkActive(); 1396 } catch (RemoteException e) { 1397 } 1398 return false; 1399 } 1400 1401 /** 1402 * {@hide} 1403 */ 1404 public ConnectivityManager(IConnectivityManager service) { 1405 mService = checkNotNull(service, "missing IConnectivityManager"); 1406 sInstance = this; 1407 } 1408 1409 /** {@hide} */ 1410 public static ConnectivityManager from(Context context) { 1411 return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 1412 } 1413 1414 /** {@hide */ 1415 public static final void enforceTetherChangePermission(Context context) { 1416 if (context.getResources().getStringArray( 1417 com.android.internal.R.array.config_mobile_hotspot_provision_app).length == 2) { 1418 // Have a provisioning app - must only let system apps (which check this app) 1419 // turn on tethering 1420 context.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.CONNECTIVITY_INTERNAL, "ConnectivityService"); 1422 } else { 1423 context.enforceCallingOrSelfPermission( 1424 android.Manifest.permission.CHANGE_NETWORK_STATE, "ConnectivityService"); 1425 } 1426 } 1427 1428 /** 1429 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1430 * situations where a Context pointer is unavailable. 1431 * @hide 1432 */ 1433 static ConnectivityManager getInstanceOrNull() { 1434 return sInstance; 1435 } 1436 1437 /** 1438 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1439 * situations where a Context pointer is unavailable. 1440 * @hide 1441 */ 1442 private static ConnectivityManager getInstance() { 1443 if (getInstanceOrNull() == null) { 1444 throw new IllegalStateException("No ConnectivityManager yet constructed"); 1445 } 1446 return getInstanceOrNull(); 1447 } 1448 1449 /** 1450 * Get the set of tetherable, available interfaces. This list is limited by 1451 * device configuration and current interface existence. 1452 * 1453 * @return an array of 0 or more Strings of tetherable interface names. 1454 * 1455 * <p>This method requires the caller to hold the permission 1456 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1457 * {@hide} 1458 */ 1459 public String[] getTetherableIfaces() { 1460 try { 1461 return mService.getTetherableIfaces(); 1462 } catch (RemoteException e) { 1463 return new String[0]; 1464 } 1465 } 1466 1467 /** 1468 * Get the set of tethered interfaces. 1469 * 1470 * @return an array of 0 or more String of currently tethered interface names. 1471 * 1472 * <p>This method requires the caller to hold the permission 1473 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1474 * {@hide} 1475 */ 1476 public String[] getTetheredIfaces() { 1477 try { 1478 return mService.getTetheredIfaces(); 1479 } catch (RemoteException e) { 1480 return new String[0]; 1481 } 1482 } 1483 1484 /** 1485 * Get the set of interface names which attempted to tether but 1486 * failed. Re-attempting to tether may cause them to reset to the Tethered 1487 * state. Alternatively, causing the interface to be destroyed and recreated 1488 * may cause them to reset to the available state. 1489 * {@link ConnectivityManager#getLastTetherError} can be used to get more 1490 * information on the cause of the errors. 1491 * 1492 * @return an array of 0 or more String indicating the interface names 1493 * which failed to tether. 1494 * 1495 * <p>This method requires the caller to hold the permission 1496 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1497 * {@hide} 1498 */ 1499 public String[] getTetheringErroredIfaces() { 1500 try { 1501 return mService.getTetheringErroredIfaces(); 1502 } catch (RemoteException e) { 1503 return new String[0]; 1504 } 1505 } 1506 1507 /** 1508 * Get the set of tethered dhcp ranges. 1509 * 1510 * @return an array of 0 or more {@code String} of tethered dhcp ranges. 1511 * {@hide} 1512 */ 1513 public String[] getTetheredDhcpRanges() { 1514 try { 1515 return mService.getTetheredDhcpRanges(); 1516 } catch (RemoteException e) { 1517 return new String[0]; 1518 } 1519 } 1520 1521 /** 1522 * Attempt to tether the named interface. This will setup a dhcp server 1523 * on the interface, forward and NAT IP packets and forward DNS requests 1524 * to the best active upstream network interface. Note that if no upstream 1525 * IP network interface is available, dhcp will still run and traffic will be 1526 * allowed between the tethered devices and this device, though upstream net 1527 * access will of course fail until an upstream network interface becomes 1528 * active. 1529 * 1530 * @param iface the interface name to tether. 1531 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1532 * 1533 * <p>This method requires the caller to hold the permission 1534 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1535 * {@hide} 1536 */ 1537 public int tether(String iface) { 1538 try { 1539 return mService.tether(iface); 1540 } catch (RemoteException e) { 1541 return TETHER_ERROR_SERVICE_UNAVAIL; 1542 } 1543 } 1544 1545 /** 1546 * Stop tethering the named interface. 1547 * 1548 * @param iface the interface name to untether. 1549 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1550 * 1551 * <p>This method requires the caller to hold the permission 1552 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1553 * {@hide} 1554 */ 1555 public int untether(String iface) { 1556 try { 1557 return mService.untether(iface); 1558 } catch (RemoteException e) { 1559 return TETHER_ERROR_SERVICE_UNAVAIL; 1560 } 1561 } 1562 1563 /** 1564 * Check if the device allows for tethering. It may be disabled via 1565 * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or 1566 * due to device configuration. 1567 * 1568 * @return a boolean - {@code true} indicating Tethering is supported. 1569 * 1570 * <p>This method requires the caller to hold the permission 1571 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1572 * {@hide} 1573 */ 1574 public boolean isTetheringSupported() { 1575 try { 1576 return mService.isTetheringSupported(); 1577 } catch (RemoteException e) { 1578 return false; 1579 } 1580 } 1581 1582 /** 1583 * Get the list of regular expressions that define any tetherable 1584 * USB network interfaces. If USB tethering is not supported by the 1585 * device, this list should be empty. 1586 * 1587 * @return an array of 0 or more regular expression Strings defining 1588 * what interfaces are considered tetherable usb interfaces. 1589 * 1590 * <p>This method requires the caller to hold the permission 1591 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1592 * {@hide} 1593 */ 1594 public String[] getTetherableUsbRegexs() { 1595 try { 1596 return mService.getTetherableUsbRegexs(); 1597 } catch (RemoteException e) { 1598 return new String[0]; 1599 } 1600 } 1601 1602 /** 1603 * Get the list of regular expressions that define any tetherable 1604 * Wifi network interfaces. If Wifi tethering is not supported by the 1605 * device, this list should be empty. 1606 * 1607 * @return an array of 0 or more regular expression Strings defining 1608 * what interfaces are considered tetherable wifi interfaces. 1609 * 1610 * <p>This method requires the caller to hold the permission 1611 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1612 * {@hide} 1613 */ 1614 public String[] getTetherableWifiRegexs() { 1615 try { 1616 return mService.getTetherableWifiRegexs(); 1617 } catch (RemoteException e) { 1618 return new String[0]; 1619 } 1620 } 1621 1622 /** 1623 * Get the list of regular expressions that define any tetherable 1624 * Bluetooth network interfaces. If Bluetooth tethering is not supported by the 1625 * device, this list should be empty. 1626 * 1627 * @return an array of 0 or more regular expression Strings defining 1628 * what interfaces are considered tetherable bluetooth interfaces. 1629 * 1630 * <p>This method requires the caller to hold the permission 1631 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1632 * {@hide} 1633 */ 1634 public String[] getTetherableBluetoothRegexs() { 1635 try { 1636 return mService.getTetherableBluetoothRegexs(); 1637 } catch (RemoteException e) { 1638 return new String[0]; 1639 } 1640 } 1641 1642 /** 1643 * Attempt to both alter the mode of USB and Tethering of USB. A 1644 * utility method to deal with some of the complexity of USB - will 1645 * attempt to switch to Rndis and subsequently tether the resulting 1646 * interface on {@code true} or turn off tethering and switch off 1647 * Rndis on {@code false}. 1648 * 1649 * @param enable a boolean - {@code true} to enable tethering 1650 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1651 * 1652 * <p>This method requires the caller to hold the permission 1653 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1654 * {@hide} 1655 */ 1656 public int setUsbTethering(boolean enable) { 1657 try { 1658 return mService.setUsbTethering(enable); 1659 } catch (RemoteException e) { 1660 return TETHER_ERROR_SERVICE_UNAVAIL; 1661 } 1662 } 1663 1664 /** {@hide} */ 1665 public static final int TETHER_ERROR_NO_ERROR = 0; 1666 /** {@hide} */ 1667 public static final int TETHER_ERROR_UNKNOWN_IFACE = 1; 1668 /** {@hide} */ 1669 public static final int TETHER_ERROR_SERVICE_UNAVAIL = 2; 1670 /** {@hide} */ 1671 public static final int TETHER_ERROR_UNSUPPORTED = 3; 1672 /** {@hide} */ 1673 public static final int TETHER_ERROR_UNAVAIL_IFACE = 4; 1674 /** {@hide} */ 1675 public static final int TETHER_ERROR_MASTER_ERROR = 5; 1676 /** {@hide} */ 1677 public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6; 1678 /** {@hide} */ 1679 public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7; 1680 /** {@hide} */ 1681 public static final int TETHER_ERROR_ENABLE_NAT_ERROR = 8; 1682 /** {@hide} */ 1683 public static final int TETHER_ERROR_DISABLE_NAT_ERROR = 9; 1684 /** {@hide} */ 1685 public static final int TETHER_ERROR_IFACE_CFG_ERROR = 10; 1686 1687 /** 1688 * Get a more detailed error code after a Tethering or Untethering 1689 * request asynchronously failed. 1690 * 1691 * @param iface The name of the interface of interest 1692 * @return error The error code of the last error tethering or untethering the named 1693 * interface 1694 * 1695 * <p>This method requires the caller to hold the permission 1696 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1697 * {@hide} 1698 */ 1699 public int getLastTetherError(String iface) { 1700 try { 1701 return mService.getLastTetherError(iface); 1702 } catch (RemoteException e) { 1703 return TETHER_ERROR_SERVICE_UNAVAIL; 1704 } 1705 } 1706 1707 /** 1708 * Report network connectivity status. This is currently used only 1709 * to alter status bar UI. 1710 * 1711 * @param networkType The type of network you want to report on 1712 * @param percentage The quality of the connection 0 is bad, 100 is good 1713 * 1714 * <p>This method requires the caller to hold the permission 1715 * {@link android.Manifest.permission#STATUS_BAR}. 1716 * {@hide} 1717 */ 1718 public void reportInetCondition(int networkType, int percentage) { 1719 try { 1720 mService.reportInetCondition(networkType, percentage); 1721 } catch (RemoteException e) { 1722 } 1723 } 1724 1725 /** 1726 * Report a problem network to the framework. This provides a hint to the system 1727 * that there might be connectivity problems on this network and may cause 1728 * the framework to re-evaluate network connectivity and/or switch to another 1729 * network. 1730 * 1731 * @param network The {@link Network} the application was attempting to use 1732 * or {@code null} to indicate the current default network. 1733 */ 1734 public void reportBadNetwork(Network network) { 1735 try { 1736 mService.reportBadNetwork(network); 1737 } catch (RemoteException e) { 1738 } 1739 } 1740 1741 /** 1742 * Set a network-independent global http proxy. This is not normally what you want 1743 * for typical HTTP proxies - they are general network dependent. However if you're 1744 * doing something unusual like general internal filtering this may be useful. On 1745 * a private network where the proxy is not accessible, you may break HTTP using this. 1746 * 1747 * @param p The a {@link ProxyInfo} object defining the new global 1748 * HTTP proxy. A {@code null} value will clear the global HTTP proxy. 1749 * 1750 * <p>This method requires the caller to hold the permission 1751 * android.Manifest.permission#CONNECTIVITY_INTERNAL. 1752 * @hide 1753 */ 1754 public void setGlobalProxy(ProxyInfo p) { 1755 try { 1756 mService.setGlobalProxy(p); 1757 } catch (RemoteException e) { 1758 } 1759 } 1760 1761 /** 1762 * Retrieve any network-independent global HTTP proxy. 1763 * 1764 * @return {@link ProxyInfo} for the current global HTTP proxy or {@code null} 1765 * if no global HTTP proxy is set. 1766 * 1767 * <p>This method requires the caller to hold the permission 1768 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1769 * @hide 1770 */ 1771 public ProxyInfo getGlobalProxy() { 1772 try { 1773 return mService.getGlobalProxy(); 1774 } catch (RemoteException e) { 1775 return null; 1776 } 1777 } 1778 1779 /** 1780 * Get the current default HTTP proxy settings. If a global proxy is set it will be returned, 1781 * otherwise if this process is bound to a {@link Network} using 1782 * {@link #bindProcessToNetwork} then that {@code Network}'s proxy is returned, otherwise 1783 * the default network's proxy is returned. 1784 * 1785 * @return the {@link ProxyInfo} for the current HTTP proxy, or {@code null} if no 1786 * HTTP proxy is active. 1787 */ 1788 public ProxyInfo getDefaultProxy() { 1789 final Network network = getBoundNetworkForProcess(); 1790 if (network != null) { 1791 final ProxyInfo globalProxy = getGlobalProxy(); 1792 if (globalProxy != null) return globalProxy; 1793 final LinkProperties lp = getLinkProperties(network); 1794 if (lp != null) return lp.getHttpProxy(); 1795 return null; 1796 } 1797 try { 1798 return mService.getDefaultProxy(); 1799 } catch (RemoteException e) { 1800 return null; 1801 } 1802 } 1803 1804 /** 1805 * Returns true if the hardware supports the given network type 1806 * else it returns false. This doesn't indicate we have coverage 1807 * or are authorized onto a network, just whether or not the 1808 * hardware supports it. For example a GSM phone without a SIM 1809 * should still return {@code true} for mobile data, but a wifi only 1810 * tablet would return {@code false}. 1811 * 1812 * @param networkType The network type we'd like to check 1813 * @return {@code true} if supported, else {@code false} 1814 * 1815 * <p>This method requires the caller to hold the permission 1816 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1817 * @hide 1818 */ 1819 public boolean isNetworkSupported(int networkType) { 1820 try { 1821 return mService.isNetworkSupported(networkType); 1822 } catch (RemoteException e) {} 1823 return false; 1824 } 1825 1826 /** 1827 * Returns if the currently active data network is metered. A network is 1828 * classified as metered when the user is sensitive to heavy data usage on 1829 * that connection due to monetary costs, data limitations or 1830 * battery/performance issues. You should check this before doing large 1831 * data transfers, and warn the user or delay the operation until another 1832 * network is available. 1833 * 1834 * @return {@code true} if large transfers should be avoided, otherwise 1835 * {@code false}. 1836 * 1837 * <p>This method requires the caller to hold the permission 1838 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1839 */ 1840 public boolean isActiveNetworkMetered() { 1841 try { 1842 return mService.isActiveNetworkMetered(); 1843 } catch (RemoteException e) { 1844 return false; 1845 } 1846 } 1847 1848 /** 1849 * If the LockdownVpn mechanism is enabled, updates the vpn 1850 * with a reload of its profile. 1851 * 1852 * @return a boolean with {@code} indicating success 1853 * 1854 * <p>This method can only be called by the system UID 1855 * {@hide} 1856 */ 1857 public boolean updateLockdownVpn() { 1858 try { 1859 return mService.updateLockdownVpn(); 1860 } catch (RemoteException e) { 1861 return false; 1862 } 1863 } 1864 1865 /** 1866 * Signal that the captive portal check on the indicated network 1867 * is complete and whether its a captive portal or not. 1868 * 1869 * @param info the {@link NetworkInfo} object for the networkType 1870 * in question. 1871 * @param isCaptivePortal true/false. 1872 * 1873 * <p>This method requires the caller to hold the permission 1874 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. 1875 * {@hide} 1876 */ 1877 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1878 try { 1879 mService.captivePortalCheckCompleted(info, isCaptivePortal); 1880 } catch (RemoteException e) { 1881 } 1882 } 1883 1884 /** 1885 * Check mobile provisioning. 1886 * 1887 * @param suggestedTimeOutMs, timeout in milliseconds 1888 * 1889 * @return time out that will be used, maybe less that suggestedTimeOutMs 1890 * -1 if an error. 1891 * 1892 * {@hide} 1893 */ 1894 public int checkMobileProvisioning(int suggestedTimeOutMs) { 1895 int timeOutMs = -1; 1896 try { 1897 timeOutMs = mService.checkMobileProvisioning(suggestedTimeOutMs); 1898 } catch (RemoteException e) { 1899 } 1900 return timeOutMs; 1901 } 1902 1903 /** 1904 * Get the mobile provisioning url. 1905 * {@hide} 1906 */ 1907 public String getMobileProvisioningUrl() { 1908 try { 1909 return mService.getMobileProvisioningUrl(); 1910 } catch (RemoteException e) { 1911 } 1912 return null; 1913 } 1914 1915 /** 1916 * Get the mobile redirected provisioning url. 1917 * {@hide} 1918 */ 1919 public String getMobileRedirectedProvisioningUrl() { 1920 try { 1921 return mService.getMobileRedirectedProvisioningUrl(); 1922 } catch (RemoteException e) { 1923 } 1924 return null; 1925 } 1926 1927 /** 1928 * Set sign in error notification to visible or in visible 1929 * 1930 * @param visible 1931 * @param networkType 1932 * 1933 * {@hide} 1934 */ 1935 public void setProvisioningNotificationVisible(boolean visible, int networkType, 1936 String action) { 1937 try { 1938 mService.setProvisioningNotificationVisible(visible, networkType, action); 1939 } catch (RemoteException e) { 1940 } 1941 } 1942 1943 /** 1944 * Set the value for enabling/disabling airplane mode 1945 * 1946 * @param enable whether to enable airplane mode or not 1947 * 1948 * <p>This method requires the caller to hold the permission 1949 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. 1950 * @hide 1951 */ 1952 public void setAirplaneMode(boolean enable) { 1953 try { 1954 mService.setAirplaneMode(enable); 1955 } catch (RemoteException e) { 1956 } 1957 } 1958 1959 /** {@hide} */ 1960 public void registerNetworkFactory(Messenger messenger, String name) { 1961 try { 1962 mService.registerNetworkFactory(messenger, name); 1963 } catch (RemoteException e) { } 1964 } 1965 1966 /** {@hide} */ 1967 public void unregisterNetworkFactory(Messenger messenger) { 1968 try { 1969 mService.unregisterNetworkFactory(messenger); 1970 } catch (RemoteException e) { } 1971 } 1972 1973 /** {@hide} */ 1974 public void registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp, 1975 NetworkCapabilities nc, int score, NetworkMisc misc) { 1976 try { 1977 mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc); 1978 } catch (RemoteException e) { } 1979 } 1980 1981 /** 1982 * Base class for NetworkRequest callbacks. Used for notifications about network 1983 * changes. Should be extended by applications wanting notifications. 1984 */ 1985 public static class NetworkCallback { 1986 /** @hide */ 1987 public static final int PRECHECK = 1; 1988 /** @hide */ 1989 public static final int AVAILABLE = 2; 1990 /** @hide */ 1991 public static final int LOSING = 3; 1992 /** @hide */ 1993 public static final int LOST = 4; 1994 /** @hide */ 1995 public static final int UNAVAIL = 5; 1996 /** @hide */ 1997 public static final int CAP_CHANGED = 6; 1998 /** @hide */ 1999 public static final int PROP_CHANGED = 7; 2000 /** @hide */ 2001 public static final int CANCELED = 8; 2002 2003 /** 2004 * @hide 2005 * Called whenever the framework connects to a network that it may use to 2006 * satisfy this request 2007 */ 2008 public void onPreCheck(Network network) {} 2009 2010 /** 2011 * Called when the framework connects and has declared new network ready for use. 2012 * This callback may be called more than once if the {@link Network} that is 2013 * satisfying the request changes. 2014 * 2015 * @param network The {@link Network} of the satisfying network. 2016 */ 2017 public void onAvailable(Network network) {} 2018 2019 /** 2020 * Called when the network is about to be disconnected. Often paired with an 2021 * {@link NetworkCallback#onAvailable} call with the new replacement network 2022 * for graceful handover. This may not be called if we have a hard loss 2023 * (loss without warning). This may be followed by either a 2024 * {@link NetworkCallback#onLost} call or a 2025 * {@link NetworkCallback#onAvailable} call for this network depending 2026 * on whether we lose or regain it. 2027 * 2028 * @param network The {@link Network} that is about to be disconnected. 2029 * @param maxMsToLive The time in ms the framework will attempt to keep the 2030 * network connected. Note that the network may suffer a 2031 * hard loss at any time. 2032 */ 2033 public void onLosing(Network network, int maxMsToLive) {} 2034 2035 /** 2036 * Called when the framework has a hard loss of the network or when the 2037 * graceful failure ends. 2038 * 2039 * @param network The {@link Network} lost. 2040 */ 2041 public void onLost(Network network) {} 2042 2043 /** 2044 * Called if no network is found in the given timeout time. If no timeout is given, 2045 * this will not be called. 2046 * @hide 2047 */ 2048 public void onUnavailable() {} 2049 2050 /** 2051 * Called when the network the framework connected to for this request 2052 * changes capabilities but still satisfies the stated need. 2053 * 2054 * @param network The {@link Network} whose capabilities have changed. 2055 * @param networkCapabilities The new {@link NetworkCapabilities} for this network. 2056 */ 2057 public void onCapabilitiesChanged(Network network, 2058 NetworkCapabilities networkCapabilities) {} 2059 2060 /** 2061 * Called when the network the framework connected to for this request 2062 * changes {@link LinkProperties}. 2063 * 2064 * @param network The {@link Network} whose link properties have changed. 2065 * @param linkProperties The new {@link LinkProperties} for this network. 2066 */ 2067 public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) {} 2068 2069 private NetworkRequest networkRequest; 2070 } 2071 2072 private static final int BASE = Protocol.BASE_CONNECTIVITY_MANAGER; 2073 /** @hide obj = pair(NetworkRequest, Network) */ 2074 public static final int CALLBACK_PRECHECK = BASE + 1; 2075 /** @hide obj = pair(NetworkRequest, Network) */ 2076 public static final int CALLBACK_AVAILABLE = BASE + 2; 2077 /** @hide obj = pair(NetworkRequest, Network), arg1 = ttl */ 2078 public static final int CALLBACK_LOSING = BASE + 3; 2079 /** @hide obj = pair(NetworkRequest, Network) */ 2080 public static final int CALLBACK_LOST = BASE + 4; 2081 /** @hide obj = NetworkRequest */ 2082 public static final int CALLBACK_UNAVAIL = BASE + 5; 2083 /** @hide obj = pair(NetworkRequest, Network) */ 2084 public static final int CALLBACK_CAP_CHANGED = BASE + 6; 2085 /** @hide obj = pair(NetworkRequest, Network) */ 2086 public static final int CALLBACK_IP_CHANGED = BASE + 7; 2087 /** @hide obj = NetworkRequest */ 2088 public static final int CALLBACK_RELEASED = BASE + 8; 2089 /** @hide */ 2090 public static final int CALLBACK_EXIT = BASE + 9; 2091 /** @hide obj = NetworkCapabilities, arg1 = seq number */ 2092 private static final int EXPIRE_LEGACY_REQUEST = BASE + 10; 2093 2094 private class CallbackHandler extends Handler { 2095 private final HashMap<NetworkRequest, NetworkCallback>mCallbackMap; 2096 private final AtomicInteger mRefCount; 2097 private static final String TAG = "ConnectivityManager.CallbackHandler"; 2098 private final ConnectivityManager mCm; 2099 2100 CallbackHandler(Looper looper, HashMap<NetworkRequest, NetworkCallback>callbackMap, 2101 AtomicInteger refCount, ConnectivityManager cm) { 2102 super(looper); 2103 mCallbackMap = callbackMap; 2104 mRefCount = refCount; 2105 mCm = cm; 2106 } 2107 2108 @Override 2109 public void handleMessage(Message message) { 2110 Log.d(TAG, "CM callback handler got msg " + message.what); 2111 switch (message.what) { 2112 case CALLBACK_PRECHECK: { 2113 NetworkRequest request = (NetworkRequest)getObject(message, 2114 NetworkRequest.class); 2115 NetworkCallback callbacks = getCallbacks(request); 2116 if (callbacks != null) { 2117 callbacks.onPreCheck((Network)getObject(message, Network.class)); 2118 } else { 2119 Log.e(TAG, "callback not found for PRECHECK message"); 2120 } 2121 break; 2122 } 2123 case CALLBACK_AVAILABLE: { 2124 NetworkRequest request = (NetworkRequest)getObject(message, 2125 NetworkRequest.class); 2126 NetworkCallback callbacks = getCallbacks(request); 2127 if (callbacks != null) { 2128 callbacks.onAvailable((Network)getObject(message, Network.class)); 2129 } else { 2130 Log.e(TAG, "callback not found for AVAILABLE message"); 2131 } 2132 break; 2133 } 2134 case CALLBACK_LOSING: { 2135 NetworkRequest request = (NetworkRequest)getObject(message, 2136 NetworkRequest.class); 2137 NetworkCallback callbacks = getCallbacks(request); 2138 if (callbacks != null) { 2139 callbacks.onLosing((Network)getObject(message, Network.class), 2140 message.arg1); 2141 } else { 2142 Log.e(TAG, "callback not found for LOSING message"); 2143 } 2144 break; 2145 } 2146 case CALLBACK_LOST: { 2147 NetworkRequest request = (NetworkRequest)getObject(message, 2148 NetworkRequest.class); 2149 2150 NetworkCallback callbacks = getCallbacks(request); 2151 if (callbacks != null) { 2152 callbacks.onLost((Network)getObject(message, Network.class)); 2153 } else { 2154 Log.e(TAG, "callback not found for LOST message"); 2155 } 2156 break; 2157 } 2158 case CALLBACK_UNAVAIL: { 2159 NetworkRequest request = (NetworkRequest)getObject(message, 2160 NetworkRequest.class); 2161 NetworkCallback callbacks = null; 2162 synchronized(mCallbackMap) { 2163 callbacks = mCallbackMap.get(request); 2164 } 2165 if (callbacks != null) { 2166 callbacks.onUnavailable(); 2167 } else { 2168 Log.e(TAG, "callback not found for UNAVAIL message"); 2169 } 2170 break; 2171 } 2172 case CALLBACK_CAP_CHANGED: { 2173 NetworkRequest request = (NetworkRequest)getObject(message, 2174 NetworkRequest.class); 2175 NetworkCallback callbacks = getCallbacks(request); 2176 if (callbacks != null) { 2177 Network network = (Network)getObject(message, Network.class); 2178 NetworkCapabilities cap = (NetworkCapabilities)getObject(message, 2179 NetworkCapabilities.class); 2180 2181 callbacks.onCapabilitiesChanged(network, cap); 2182 } else { 2183 Log.e(TAG, "callback not found for CAP_CHANGED message"); 2184 } 2185 break; 2186 } 2187 case CALLBACK_IP_CHANGED: { 2188 NetworkRequest request = (NetworkRequest)getObject(message, 2189 NetworkRequest.class); 2190 NetworkCallback callbacks = getCallbacks(request); 2191 if (callbacks != null) { 2192 Network network = (Network)getObject(message, Network.class); 2193 LinkProperties lp = (LinkProperties)getObject(message, 2194 LinkProperties.class); 2195 2196 callbacks.onLinkPropertiesChanged(network, lp); 2197 } else { 2198 Log.e(TAG, "callback not found for IP_CHANGED message"); 2199 } 2200 break; 2201 } 2202 case CALLBACK_RELEASED: { 2203 NetworkRequest req = (NetworkRequest)getObject(message, NetworkRequest.class); 2204 NetworkCallback callbacks = null; 2205 synchronized(mCallbackMap) { 2206 callbacks = mCallbackMap.remove(req); 2207 } 2208 if (callbacks != null) { 2209 synchronized(mRefCount) { 2210 if (mRefCount.decrementAndGet() == 0) { 2211 getLooper().quit(); 2212 } 2213 } 2214 } else { 2215 Log.e(TAG, "callback not found for CANCELED message"); 2216 } 2217 break; 2218 } 2219 case CALLBACK_EXIT: { 2220 Log.d(TAG, "Listener quiting"); 2221 getLooper().quit(); 2222 break; 2223 } 2224 case EXPIRE_LEGACY_REQUEST: { 2225 expireRequest((NetworkCapabilities)message.obj, message.arg1); 2226 break; 2227 } 2228 } 2229 } 2230 2231 private Object getObject(Message msg, Class c) { 2232 return msg.getData().getParcelable(c.getSimpleName()); 2233 } 2234 private NetworkCallback getCallbacks(NetworkRequest req) { 2235 synchronized(mCallbackMap) { 2236 return mCallbackMap.get(req); 2237 } 2238 } 2239 } 2240 2241 private void incCallbackHandlerRefCount() { 2242 synchronized(sCallbackRefCount) { 2243 if (sCallbackRefCount.incrementAndGet() == 1) { 2244 // TODO - switch this over to a ManagerThread or expire it when done 2245 HandlerThread callbackThread = new HandlerThread("ConnectivityManager"); 2246 callbackThread.start(); 2247 sCallbackHandler = new CallbackHandler(callbackThread.getLooper(), 2248 sNetworkCallback, sCallbackRefCount, this); 2249 } 2250 } 2251 } 2252 2253 private void decCallbackHandlerRefCount() { 2254 synchronized(sCallbackRefCount) { 2255 if (sCallbackRefCount.decrementAndGet() == 0) { 2256 sCallbackHandler.obtainMessage(CALLBACK_EXIT).sendToTarget(); 2257 sCallbackHandler = null; 2258 } 2259 } 2260 } 2261 2262 static final HashMap<NetworkRequest, NetworkCallback> sNetworkCallback = 2263 new HashMap<NetworkRequest, NetworkCallback>(); 2264 static final AtomicInteger sCallbackRefCount = new AtomicInteger(0); 2265 static CallbackHandler sCallbackHandler = null; 2266 2267 private final static int LISTEN = 1; 2268 private final static int REQUEST = 2; 2269 2270 private NetworkRequest sendRequestForNetwork(NetworkCapabilities need, 2271 NetworkCallback networkCallback, int timeoutSec, int action, 2272 int legacyType) { 2273 if (networkCallback == null) { 2274 throw new IllegalArgumentException("null NetworkCallback"); 2275 } 2276 if (need == null) throw new IllegalArgumentException("null NetworkCapabilities"); 2277 try { 2278 incCallbackHandlerRefCount(); 2279 synchronized(sNetworkCallback) { 2280 if (action == LISTEN) { 2281 networkCallback.networkRequest = mService.listenForNetwork(need, 2282 new Messenger(sCallbackHandler), new Binder()); 2283 } else { 2284 networkCallback.networkRequest = mService.requestNetwork(need, 2285 new Messenger(sCallbackHandler), timeoutSec, new Binder(), legacyType); 2286 } 2287 if (networkCallback.networkRequest != null) { 2288 sNetworkCallback.put(networkCallback.networkRequest, networkCallback); 2289 } 2290 } 2291 } catch (RemoteException e) {} 2292 if (networkCallback.networkRequest == null) decCallbackHandlerRefCount(); 2293 return networkCallback.networkRequest; 2294 } 2295 2296 /** 2297 * Request a network to satisfy a set of {@link NetworkCapabilities}. 2298 * 2299 * This {@link NetworkRequest} will live until released via 2300 * {@link #unregisterNetworkCallback} or the calling application exits. 2301 * Status of the request can be followed by listening to the various 2302 * callbacks described in {@link NetworkCallback}. The {@link Network} 2303 * can be used to direct traffic to the network. 2304 * 2305 * @param request {@link NetworkRequest} describing this request. 2306 * @param networkCallback The {@link NetworkCallback} to be utilized for this 2307 * request. Note the callback must not be shared - they 2308 * uniquely specify this request. 2309 */ 2310 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback) { 2311 sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, 2312 REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); 2313 } 2314 2315 /** 2316 * Request a network to satisfy a set of {@link NetworkCapabilities}, limited 2317 * by a timeout. 2318 * 2319 * This function behaves identically to the non-timedout version, but if a suitable 2320 * network is not found within the given time (in milliseconds) the 2321 * {@link NetworkCallback#unavailable} callback is called. The request must 2322 * still be released normally by calling {@link releaseNetworkRequest}. 2323 * @param request {@link NetworkRequest} describing this request. 2324 * @param networkCallback The callbacks to be utilized for this request. Note 2325 * the callbacks must not be shared - they uniquely specify 2326 * this request. 2327 * @param timeoutMs The time in milliseconds to attempt looking for a suitable network 2328 * before {@link NetworkCallback#unavailable} is called. 2329 * @hide 2330 */ 2331 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, 2332 int timeoutMs) { 2333 sendRequestForNetwork(request.networkCapabilities, networkCallback, timeoutMs, 2334 REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); 2335 } 2336 2337 /** 2338 * The maximum number of milliseconds the framework will look for a suitable network 2339 * during a timeout-equiped call to {@link requestNetwork}. 2340 * {@hide} 2341 */ 2342 public final static int MAX_NETWORK_REQUEST_TIMEOUT_MS = 100 * 60 * 1000; 2343 2344 /** 2345 * The lookup key for a {@link Network} object included with the intent after 2346 * successfully finding a network for the applications request. Retrieve it with 2347 * {@link android.content.Intent#getParcelableExtra(String)}. 2348 * <p> 2349 * Note that if you intend to invoke {@link Network#openConnection(java.net.URL)} 2350 * then you must get a ConnectivityManager instance before doing so. 2351 */ 2352 public static final String EXTRA_NETWORK = "android.net.extra.NETWORK"; 2353 2354 /** 2355 * The lookup key for a {@link NetworkRequest} object included with the intent after 2356 * successfully finding a network for the applications request. Retrieve it with 2357 * {@link android.content.Intent#getParcelableExtra(String)}. 2358 */ 2359 public static final String EXTRA_NETWORK_REQUEST = "android.net.extra.NETWORK_REQUEST"; 2360 2361 2362 /** 2363 * Request a network to satisfy a set of {@link NetworkCapabilities}. 2364 * 2365 * This function behaves identically to the version that takes a NetworkCallback, but instead 2366 * of {@link NetworkCallback} a {@link PendingIntent} is used. This means 2367 * the request may outlive the calling application and get called back when a suitable 2368 * network is found. 2369 * <p> 2370 * The operation is an Intent broadcast that goes to a broadcast receiver that 2371 * you registered with {@link Context#registerReceiver} or through the 2372 * <receiver> tag in an AndroidManifest.xml file 2373 * <p> 2374 * The operation Intent is delivered with two extras, a {@link Network} typed 2375 * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest} 2376 * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing 2377 * the original requests parameters. It is important to create a new, 2378 * {@link NetworkCallback} based request before completing the processing of the 2379 * Intent to reserve the network or it will be released shortly after the Intent 2380 * is processed. 2381 * <p> 2382 * If there is already an request for this Intent registered (with the equality of 2383 * two Intents defined by {@link Intent#filterEquals}), then it will be removed and 2384 * replaced by this one, effectively releasing the previous {@link NetworkRequest}. 2385 * <p> 2386 * The request may be released normally by calling 2387 * {@link #releaseNetworkRequest(android.app.PendingIntent)}. 2388 * 2389 * @param request {@link NetworkRequest} describing this request. 2390 * @param operation Action to perform when the network is available (corresponds 2391 * to the {@link NetworkCallback#onAvailable} call. Typically 2392 * comes from {@link PendingIntent#getBroadcast}. Cannot be null. 2393 */ 2394 public void requestNetwork(NetworkRequest request, PendingIntent operation) { 2395 checkPendingIntent(operation); 2396 try { 2397 mService.pendingRequestForNetwork(request.networkCapabilities, operation); 2398 } catch (RemoteException e) {} 2399 } 2400 2401 /** 2402 * Removes a request made via {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} 2403 * <p> 2404 * This method has the same behavior as {@link #unregisterNetworkCallback} with respect to 2405 * releasing network resources and disconnecting. 2406 * 2407 * @param operation A PendingIntent equal (as defined by {@link Intent#filterEquals}) to the 2408 * PendingIntent passed to 2409 * {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} with the 2410 * corresponding NetworkRequest you'd like to remove. Cannot be null. 2411 */ 2412 public void releaseNetworkRequest(PendingIntent operation) { 2413 checkPendingIntent(operation); 2414 try { 2415 mService.releasePendingNetworkRequest(operation); 2416 } catch (RemoteException e) {} 2417 } 2418 2419 private void checkPendingIntent(PendingIntent intent) { 2420 if (intent == null) { 2421 throw new IllegalArgumentException("PendingIntent cannot be null."); 2422 } 2423 } 2424 2425 /** 2426 * Registers to receive notifications about all networks which satisfy the given 2427 * {@link NetworkRequest}. The callbacks will continue to be called until 2428 * either the application exits or {@link #unregisterNetworkCallback} is called 2429 * 2430 * @param request {@link NetworkRequest} describing this request. 2431 * @param networkCallback The {@link NetworkCallback} that the system will call as suitable 2432 * networks change state. 2433 */ 2434 public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) { 2435 sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, LISTEN, TYPE_NONE); 2436 } 2437 2438 /** 2439 * Unregisters callbacks about and possibly releases networks originating from 2440 * {@link #requestNetwork} and {@link #registerNetworkCallback} calls. If the 2441 * given {@code NetworkCallback} had previously been used with {@code #requestNetwork}, 2442 * any networks that had been connected to only to satisfy that request will be 2443 * disconnected. 2444 * 2445 * @param networkCallback The {@link NetworkCallback} used when making the request. 2446 */ 2447 public void unregisterNetworkCallback(NetworkCallback networkCallback) { 2448 if (networkCallback == null || networkCallback.networkRequest == null || 2449 networkCallback.networkRequest.requestId == REQUEST_ID_UNSET) { 2450 throw new IllegalArgumentException("Invalid NetworkCallback"); 2451 } 2452 try { 2453 mService.releaseNetworkRequest(networkCallback.networkRequest); 2454 } catch (RemoteException e) {} 2455 } 2456 2457 /** 2458 * Resets all connectivity manager settings back to factory defaults. 2459 * @hide 2460 */ 2461 public void factoryReset() { 2462 // Turn airplane mode off 2463 setAirplaneMode(false); 2464 2465 // Untether 2466 for (String tether : getTetheredIfaces()) { 2467 untether(tether); 2468 } 2469 2470 // Turn VPN off 2471 try { 2472 VpnConfig vpnConfig = mService.getVpnConfig(); 2473 if (vpnConfig != null) { 2474 if (vpnConfig.legacy) { 2475 mService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN); 2476 } else { 2477 // Prevent this app from initiating VPN connections in the future without 2478 // user intervention. 2479 mService.setVpnPackageAuthorization(false); 2480 2481 mService.prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN); 2482 } 2483 } 2484 } catch (RemoteException e) { 2485 // Well, we tried 2486 } 2487 } 2488 2489 /** 2490 * Binds the current process to {@code network}. All Sockets created in the future 2491 * (and not explicitly bound via a bound SocketFactory from 2492 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 2493 * {@code network}. All host name resolutions will be limited to {@code network} as well. 2494 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 2495 * work and all host name resolutions will fail. This is by design so an application doesn't 2496 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 2497 * To clear binding pass {@code null} for {@code network}. Using individually bound 2498 * Sockets created by Network.getSocketFactory().createSocket() and 2499 * performing network-specific host name resolutions via 2500 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 2501 * {@code bindProcessToNetwork}. 2502 * 2503 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 2504 * the current binding. 2505 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2506 */ 2507 public boolean bindProcessToNetwork(Network network) { 2508 // Forcing callers to call thru non-static function ensures ConnectivityManager 2509 // instantiated. 2510 return setProcessDefaultNetwork(network); 2511 } 2512 2513 /** 2514 * Binds the current process to {@code network}. All Sockets created in the future 2515 * (and not explicitly bound via a bound SocketFactory from 2516 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 2517 * {@code network}. All host name resolutions will be limited to {@code network} as well. 2518 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 2519 * work and all host name resolutions will fail. This is by design so an application doesn't 2520 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 2521 * To clear binding pass {@code null} for {@code network}. Using individually bound 2522 * Sockets created by Network.getSocketFactory().createSocket() and 2523 * performing network-specific host name resolutions via 2524 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 2525 * {@code setProcessDefaultNetwork}. 2526 * 2527 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 2528 * the current binding. 2529 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2530 * @deprecated This function can throw {@link IllegalStateException}. Use 2531 * {@link #bindProcessToNetwork} instead. {@code bindProcessToNetwork} 2532 * is a direct replacement. 2533 */ 2534 public static boolean setProcessDefaultNetwork(Network network) { 2535 int netId = (network == null) ? NETID_UNSET : network.netId; 2536 if (netId == NetworkUtils.getBoundNetworkForProcess()) { 2537 return true; 2538 } 2539 if (NetworkUtils.bindProcessToNetwork(netId)) { 2540 // Set HTTP proxy system properties to match network. 2541 // TODO: Deprecate this static method and replace it with a non-static version. 2542 Proxy.setHttpProxySystemProperty(getInstance().getDefaultProxy()); 2543 // Must flush DNS cache as new network may have different DNS resolutions. 2544 InetAddress.clearDnsCache(); 2545 // Must flush socket pool as idle sockets will be bound to previous network and may 2546 // cause subsequent fetches to be performed on old network. 2547 NetworkEventDispatcher.getInstance().onNetworkConfigurationChanged(); 2548 return true; 2549 } else { 2550 return false; 2551 } 2552 } 2553 2554 /** 2555 * Returns the {@link Network} currently bound to this process via 2556 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 2557 * 2558 * @return {@code Network} to which this process is bound, or {@code null}. 2559 */ 2560 public Network getBoundNetworkForProcess() { 2561 // Forcing callers to call thru non-static function ensures ConnectivityManager 2562 // instantiated. 2563 return getProcessDefaultNetwork(); 2564 } 2565 2566 /** 2567 * Returns the {@link Network} currently bound to this process via 2568 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 2569 * 2570 * @return {@code Network} to which this process is bound, or {@code null}. 2571 * @deprecated Using this function can lead to other functions throwing 2572 * {@link IllegalStateException}. Use {@link #getBoundNetworkForProcess} instead. 2573 * {@code getBoundNetworkForProcess} is a direct replacement. 2574 */ 2575 public static Network getProcessDefaultNetwork() { 2576 int netId = NetworkUtils.getBoundNetworkForProcess(); 2577 if (netId == NETID_UNSET) return null; 2578 return new Network(netId); 2579 } 2580 2581 /** 2582 * Binds host resolutions performed by this process to {@code network}. 2583 * {@link #bindProcessToNetwork} takes precedence over this setting. 2584 * 2585 * @param network The {@link Network} to bind host resolutions from the current process to, or 2586 * {@code null} to clear the current binding. 2587 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2588 * @hide 2589 * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}. 2590 */ 2591 public static boolean setProcessDefaultNetworkForHostResolution(Network network) { 2592 return NetworkUtils.bindProcessToNetworkForHostResolution( 2593 network == null ? NETID_UNSET : network.netId); 2594 } 2595} 2596