ConnectivityManager.java revision db57147a55aadca39280ed62516b4a49c69ba177
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 * Action used to display a dialog that asks the user whether to connect to a network that is 290 * not validated. This intent is used to start the dialog in settings via startActivity. 291 * 292 * @hide 293 */ 294 public static final String ACTION_PROMPT_UNVALIDATED = "android.net.conn.PROMPT_UNVALIDATED"; 295 296 /** 297 * The absence of a connection type. 298 * @hide 299 */ 300 public static final int TYPE_NONE = -1; 301 302 /** 303 * The Mobile data connection. When active, all data traffic 304 * will use this network type's interface by default 305 * (it has a default route) 306 */ 307 public static final int TYPE_MOBILE = 0; 308 /** 309 * The WIFI data connection. When active, all data traffic 310 * will use this network type's interface by default 311 * (it has a default route). 312 */ 313 public static final int TYPE_WIFI = 1; 314 /** 315 * An MMS-specific Mobile data connection. This network type may use the 316 * same network interface as {@link #TYPE_MOBILE} or it may use a different 317 * one. This is used by applications needing to talk to the carrier's 318 * Multimedia Messaging Service servers. 319 */ 320 public static final int TYPE_MOBILE_MMS = 2; 321 /** 322 * A SUPL-specific Mobile data connection. This network type may use the 323 * same network interface as {@link #TYPE_MOBILE} or it may use a different 324 * one. This is used by applications needing to talk to the carrier's 325 * Secure User Plane Location servers for help locating the device. 326 */ 327 public static final int TYPE_MOBILE_SUPL = 3; 328 /** 329 * A DUN-specific Mobile data connection. This network type may use the 330 * same network interface as {@link #TYPE_MOBILE} or it may use a different 331 * one. This is sometimes by the system when setting up an upstream connection 332 * for tethering so that the carrier is aware of DUN traffic. 333 */ 334 public static final int TYPE_MOBILE_DUN = 4; 335 /** 336 * A High Priority Mobile data connection. This network type uses the 337 * same network interface as {@link #TYPE_MOBILE} but the routing setup 338 * is different. Only requesting processes will have access to the 339 * Mobile DNS servers and only IP's explicitly requested via {@link #requestRouteToHost} 340 * will route over this interface if no default route exists. 341 */ 342 public static final int TYPE_MOBILE_HIPRI = 5; 343 /** 344 * The WiMAX data connection. When active, all data traffic 345 * will use this network type's interface by default 346 * (it has a default route). 347 */ 348 public static final int TYPE_WIMAX = 6; 349 350 /** 351 * The Bluetooth data connection. When active, all data traffic 352 * will use this network type's interface by default 353 * (it has a default route). 354 */ 355 public static final int TYPE_BLUETOOTH = 7; 356 357 /** 358 * Dummy data connection. This should not be used on shipping devices. 359 */ 360 public static final int TYPE_DUMMY = 8; 361 362 /** 363 * The Ethernet data connection. When active, all data traffic 364 * will use this network type's interface by default 365 * (it has a default route). 366 */ 367 public static final int TYPE_ETHERNET = 9; 368 369 /** 370 * Over the air Administration. 371 * {@hide} 372 */ 373 public static final int TYPE_MOBILE_FOTA = 10; 374 375 /** 376 * IP Multimedia Subsystem. 377 * {@hide} 378 */ 379 public static final int TYPE_MOBILE_IMS = 11; 380 381 /** 382 * Carrier Branded Services. 383 * {@hide} 384 */ 385 public static final int TYPE_MOBILE_CBS = 12; 386 387 /** 388 * A Wi-Fi p2p connection. Only requesting processes will have access to 389 * the peers connected. 390 * {@hide} 391 */ 392 public static final int TYPE_WIFI_P2P = 13; 393 394 /** 395 * The network to use for initially attaching to the network 396 * {@hide} 397 */ 398 public static final int TYPE_MOBILE_IA = 14; 399 400/** 401 * Emergency PDN connection for emergency calls 402 * {@hide} 403 */ 404 public static final int TYPE_MOBILE_EMERGENCY = 15; 405 406 /** 407 * The network that uses proxy to achieve connectivity. 408 * {@hide} 409 */ 410 public static final int TYPE_PROXY = 16; 411 412 /** 413 * A virtual network using one or more native bearers. 414 * It may or may not be providing security services. 415 */ 416 public static final int TYPE_VPN = 17; 417 418 /** {@hide} */ 419 public static final int MAX_RADIO_TYPE = TYPE_VPN; 420 421 /** {@hide} */ 422 public static final int MAX_NETWORK_TYPE = TYPE_VPN; 423 424 /** 425 * If you want to set the default network preference,you can directly 426 * change the networkAttributes array in framework's config.xml. 427 * 428 * @deprecated Since we support so many more networks now, the single 429 * network default network preference can't really express 430 * the hierarchy. Instead, the default is defined by the 431 * networkAttributes in config.xml. You can determine 432 * the current value by calling {@link #getNetworkPreference()} 433 * from an App. 434 */ 435 @Deprecated 436 public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI; 437 438 /** 439 * @hide 440 */ 441 public final static int REQUEST_ID_UNSET = 0; 442 443 /** 444 * A NetID indicating no Network is selected. 445 * Keep in sync with bionic/libc/dns/include/resolv_netid.h 446 * @hide 447 */ 448 public static final int NETID_UNSET = 0; 449 450 private final IConnectivityManager mService; 451 /** 452 * A kludge to facilitate static access where a Context pointer isn't available, like in the 453 * case of the static set/getProcessDefaultNetwork methods and from the Network class. 454 * TODO: Remove this after deprecating the static methods in favor of non-static methods or 455 * methods that take a Context argument. 456 */ 457 private static ConnectivityManager sInstance; 458 459 private INetworkManagementService mNMService; 460 461 /** 462 * Tests if a given integer represents a valid network type. 463 * @param networkType the type to be tested 464 * @return a boolean. {@code true} if the type is valid, else {@code false} 465 */ 466 public static boolean isNetworkTypeValid(int networkType) { 467 return networkType >= 0 && networkType <= MAX_NETWORK_TYPE; 468 } 469 470 /** 471 * Returns a non-localized string representing a given network type. 472 * ONLY used for debugging output. 473 * @param type the type needing naming 474 * @return a String for the given type, or a string version of the type ("87") 475 * if no name is known. 476 * {@hide} 477 */ 478 public static String getNetworkTypeName(int type) { 479 switch (type) { 480 case TYPE_MOBILE: 481 return "MOBILE"; 482 case TYPE_WIFI: 483 return "WIFI"; 484 case TYPE_MOBILE_MMS: 485 return "MOBILE_MMS"; 486 case TYPE_MOBILE_SUPL: 487 return "MOBILE_SUPL"; 488 case TYPE_MOBILE_DUN: 489 return "MOBILE_DUN"; 490 case TYPE_MOBILE_HIPRI: 491 return "MOBILE_HIPRI"; 492 case TYPE_WIMAX: 493 return "WIMAX"; 494 case TYPE_BLUETOOTH: 495 return "BLUETOOTH"; 496 case TYPE_DUMMY: 497 return "DUMMY"; 498 case TYPE_ETHERNET: 499 return "ETHERNET"; 500 case TYPE_MOBILE_FOTA: 501 return "MOBILE_FOTA"; 502 case TYPE_MOBILE_IMS: 503 return "MOBILE_IMS"; 504 case TYPE_MOBILE_CBS: 505 return "MOBILE_CBS"; 506 case TYPE_WIFI_P2P: 507 return "WIFI_P2P"; 508 case TYPE_MOBILE_IA: 509 return "MOBILE_IA"; 510 case TYPE_MOBILE_EMERGENCY: 511 return "MOBILE_EMERGENCY"; 512 case TYPE_PROXY: 513 return "PROXY"; 514 case TYPE_VPN: 515 return "VPN"; 516 default: 517 return Integer.toString(type); 518 } 519 } 520 521 /** 522 * Checks if a given type uses the cellular data connection. 523 * This should be replaced in the future by a network property. 524 * @param networkType the type to check 525 * @return a boolean - {@code true} if uses cellular network, else {@code false} 526 * {@hide} 527 */ 528 public static boolean isNetworkTypeMobile(int networkType) { 529 switch (networkType) { 530 case TYPE_MOBILE: 531 case TYPE_MOBILE_MMS: 532 case TYPE_MOBILE_SUPL: 533 case TYPE_MOBILE_DUN: 534 case TYPE_MOBILE_HIPRI: 535 case TYPE_MOBILE_FOTA: 536 case TYPE_MOBILE_IMS: 537 case TYPE_MOBILE_CBS: 538 case TYPE_MOBILE_IA: 539 case TYPE_MOBILE_EMERGENCY: 540 return true; 541 default: 542 return false; 543 } 544 } 545 546 /** 547 * Checks if the given network type is backed by a Wi-Fi radio. 548 * 549 * @hide 550 */ 551 public static boolean isNetworkTypeWifi(int networkType) { 552 switch (networkType) { 553 case TYPE_WIFI: 554 case TYPE_WIFI_P2P: 555 return true; 556 default: 557 return false; 558 } 559 } 560 561 /** 562 * Specifies the preferred network type. When the device has more 563 * than one type available the preferred network type will be used. 564 * 565 * @param preference the network type to prefer over all others. It is 566 * unspecified what happens to the old preferred network in the 567 * overall ordering. 568 * @deprecated Functionality has been removed as it no longer makes sense, 569 * with many more than two networks - we'd need an array to express 570 * preference. Instead we use dynamic network properties of 571 * the networks to describe their precedence. 572 */ 573 public void setNetworkPreference(int preference) { 574 } 575 576 /** 577 * Retrieves the current preferred network type. 578 * 579 * @return an integer representing the preferred network type 580 * 581 * <p>This method requires the caller to hold the permission 582 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 583 * @deprecated Functionality has been removed as it no longer makes sense, 584 * with many more than two networks - we'd need an array to express 585 * preference. Instead we use dynamic network properties of 586 * the networks to describe their precedence. 587 */ 588 public int getNetworkPreference() { 589 return TYPE_NONE; 590 } 591 592 /** 593 * Returns details about the currently active default data network. When 594 * connected, this network is the default route for outgoing connections. 595 * You should always check {@link NetworkInfo#isConnected()} before initiating 596 * network traffic. This may return {@code null} when there is no default 597 * network. 598 * 599 * @return a {@link NetworkInfo} object for the current default network 600 * or {@code null} if no default network is currently active 601 * 602 * <p>This method requires the caller to hold the permission 603 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 604 */ 605 public NetworkInfo getActiveNetworkInfo() { 606 try { 607 return mService.getActiveNetworkInfo(); 608 } catch (RemoteException e) { 609 return null; 610 } 611 } 612 613 /** 614 * Returns a {@link Network} object corresponding to the currently active 615 * default data network. In the event that the current active default data 616 * network disconnects, the returned {@code Network} object will no longer 617 * be usable. This will return {@code null} when there is no default 618 * network. 619 * 620 * @return a {@link Network} object for the current default network or 621 * {@code null} if no default network is currently active 622 * 623 * <p>This method requires the caller to hold the permission 624 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 625 */ 626 public Network getActiveNetwork() { 627 try { 628 return mService.getActiveNetwork(); 629 } catch (RemoteException e) { 630 return null; 631 } 632 } 633 634 /** 635 * Returns details about the currently active default data network 636 * for a given uid. This is for internal use only to avoid spying 637 * other apps. 638 * 639 * @return a {@link NetworkInfo} object for the current default network 640 * for the given uid or {@code null} if no default network is 641 * available for the specified uid. 642 * 643 * <p>This method requires the caller to hold the permission 644 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL} 645 * {@hide} 646 */ 647 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 648 try { 649 return mService.getActiveNetworkInfoForUid(uid); 650 } catch (RemoteException e) { 651 return null; 652 } 653 } 654 655 /** 656 * Returns connection status information about a particular 657 * network type. 658 * 659 * @param networkType integer specifying which networkType in 660 * which you're interested. 661 * @return a {@link NetworkInfo} object for the requested 662 * network type or {@code null} if the type is not 663 * supported by the device. 664 * 665 * <p>This method requires the caller to hold the permission 666 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 667 */ 668 public NetworkInfo getNetworkInfo(int networkType) { 669 try { 670 return mService.getNetworkInfo(networkType); 671 } catch (RemoteException e) { 672 return null; 673 } 674 } 675 676 /** 677 * Returns connection status information about a particular 678 * Network. 679 * 680 * @param network {@link Network} specifying which network 681 * in which you're interested. 682 * @return a {@link NetworkInfo} object for the requested 683 * network or {@code null} if the {@code Network} 684 * is not valid. 685 * 686 * <p>This method requires the caller to hold the permission 687 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 688 */ 689 public NetworkInfo getNetworkInfo(Network network) { 690 try { 691 return mService.getNetworkInfoForNetwork(network); 692 } catch (RemoteException e) { 693 return null; 694 } 695 } 696 697 /** 698 * Returns connection status information about all network 699 * types supported by the device. 700 * 701 * @return an array of {@link NetworkInfo} objects. Check each 702 * {@link NetworkInfo#getType} for which type each applies. 703 * 704 * <p>This method requires the caller to hold the permission 705 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 706 */ 707 public NetworkInfo[] getAllNetworkInfo() { 708 try { 709 return mService.getAllNetworkInfo(); 710 } catch (RemoteException e) { 711 return null; 712 } 713 } 714 715 /** 716 * Returns the {@link Network} object currently serving a given type, or 717 * null if the given type is not connected. 718 * 719 * <p>This method requires the caller to hold the permission 720 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 721 * 722 * @hide 723 */ 724 public Network getNetworkForType(int networkType) { 725 try { 726 return mService.getNetworkForType(networkType); 727 } catch (RemoteException e) { 728 return null; 729 } 730 } 731 732 /** 733 * Returns an array of all {@link Network} currently tracked by the 734 * framework. 735 * 736 * @return an array of {@link Network} objects. 737 * 738 * <p>This method requires the caller to hold the permission 739 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 740 */ 741 public Network[] getAllNetworks() { 742 try { 743 return mService.getAllNetworks(); 744 } catch (RemoteException e) { 745 return null; 746 } 747 } 748 749 /** 750 * Returns an array of of {@link NetworkCapabilities} objects, representing 751 * the Networks that applications run by the given user will use by default. 752 * @hide 753 */ 754 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 755 try { 756 return mService.getDefaultNetworkCapabilitiesForUser(userId); 757 } catch (RemoteException e) { 758 return null; 759 } 760 } 761 762 /** 763 * Returns details about the Provisioning or currently active default data network. When 764 * connected, this network is the default route for outgoing connections. 765 * You should always check {@link NetworkInfo#isConnected()} before initiating 766 * network traffic. This may return {@code null} when there is no default 767 * network. 768 * 769 * @return a {@link NetworkInfo} object for the current default network 770 * or {@code null} if no default network is currently active 771 * 772 * <p>This method requires the caller to hold the permission 773 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 774 * 775 * {@hide} 776 */ 777 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 778 try { 779 return mService.getProvisioningOrActiveNetworkInfo(); 780 } catch (RemoteException e) { 781 return null; 782 } 783 } 784 785 /** 786 * Returns the IP information for the current default network. 787 * 788 * @return a {@link LinkProperties} object describing the IP info 789 * for the current default network, or {@code null} if there 790 * is no current default network. 791 * 792 * <p>This method requires the caller to hold the permission 793 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 794 * {@hide} 795 */ 796 public LinkProperties getActiveLinkProperties() { 797 try { 798 return mService.getActiveLinkProperties(); 799 } catch (RemoteException e) { 800 return null; 801 } 802 } 803 804 /** 805 * Returns the IP information for a given network type. 806 * 807 * @param networkType the network type of interest. 808 * @return a {@link LinkProperties} object describing the IP info 809 * for the given networkType, or {@code null} if there is 810 * no current default network. 811 * 812 * <p>This method requires the caller to hold the permission 813 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 814 * {@hide} 815 */ 816 public LinkProperties getLinkProperties(int networkType) { 817 try { 818 return mService.getLinkPropertiesForType(networkType); 819 } catch (RemoteException e) { 820 return null; 821 } 822 } 823 824 /** 825 * Get the {@link LinkProperties} for the given {@link Network}. This 826 * will return {@code null} if the network is unknown. 827 * 828 * @param network The {@link Network} object identifying the network in question. 829 * @return The {@link LinkProperties} for the network, or {@code null}. 830 **/ 831 public LinkProperties getLinkProperties(Network network) { 832 try { 833 return mService.getLinkProperties(network); 834 } catch (RemoteException e) { 835 return null; 836 } 837 } 838 839 /** 840 * Get the {@link NetworkCapabilities} for the given {@link Network}. This 841 * will return {@code null} if the network is unknown. 842 * 843 * @param network The {@link Network} object identifying the network in question. 844 * @return The {@link NetworkCapabilities} for the network, or {@code null}. 845 */ 846 public NetworkCapabilities getNetworkCapabilities(Network network) { 847 try { 848 return mService.getNetworkCapabilities(network); 849 } catch (RemoteException e) { 850 return null; 851 } 852 } 853 854 /** 855 * Tells the underlying networking system that the caller wants to 856 * begin using the named feature. The interpretation of {@code feature} 857 * is completely up to each networking implementation. 858 * <p>This method requires the caller to hold the permission 859 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 860 * @param networkType specifies which network the request pertains to 861 * @param feature the name of the feature to be used 862 * @return an integer value representing the outcome of the request. 863 * The interpretation of this value is specific to each networking 864 * implementation+feature combination, except that the value {@code -1} 865 * always indicates failure. 866 * 867 * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. 868 */ 869 public int startUsingNetworkFeature(int networkType, String feature) { 870 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 871 if (netCap == null) { 872 Log.d(TAG, "Can't satisfy startUsingNetworkFeature for " + networkType + ", " + 873 feature); 874 return PhoneConstants.APN_REQUEST_FAILED; 875 } 876 877 NetworkRequest request = null; 878 synchronized (sLegacyRequests) { 879 LegacyRequest l = sLegacyRequests.get(netCap); 880 if (l != null) { 881 Log.d(TAG, "renewing startUsingNetworkFeature request " + l.networkRequest); 882 renewRequestLocked(l); 883 if (l.currentNetwork != null) { 884 return PhoneConstants.APN_ALREADY_ACTIVE; 885 } else { 886 return PhoneConstants.APN_REQUEST_STARTED; 887 } 888 } 889 890 request = requestNetworkForFeatureLocked(netCap); 891 } 892 if (request != null) { 893 Log.d(TAG, "starting startUsingNetworkFeature for request " + request); 894 return PhoneConstants.APN_REQUEST_STARTED; 895 } else { 896 Log.d(TAG, " request Failed"); 897 return PhoneConstants.APN_REQUEST_FAILED; 898 } 899 } 900 901 /** 902 * Tells the underlying networking system that the caller is finished 903 * using the named feature. The interpretation of {@code feature} 904 * is completely up to each networking implementation. 905 * <p>This method requires the caller to hold the permission 906 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 907 * @param networkType specifies which network the request pertains to 908 * @param feature the name of the feature that is no longer needed 909 * @return an integer value representing the outcome of the request. 910 * The interpretation of this value is specific to each networking 911 * implementation+feature combination, except that the value {@code -1} 912 * always indicates failure. 913 * 914 * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api. 915 */ 916 public int stopUsingNetworkFeature(int networkType, String feature) { 917 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 918 if (netCap == null) { 919 Log.d(TAG, "Can't satisfy stopUsingNetworkFeature for " + networkType + ", " + 920 feature); 921 return -1; 922 } 923 924 if (removeRequestForFeature(netCap)) { 925 Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature); 926 } 927 return 1; 928 } 929 930 /** 931 * Removes the NET_CAPABILITY_NOT_RESTRICTED capability from the given 932 * NetworkCapabilities object if all the capabilities it provides are 933 * typically provided by restricted networks. 934 * 935 * TODO: consider: 936 * - Moving to NetworkCapabilities 937 * - Renaming it to guessRestrictedCapability and make it set the 938 * restricted capability bit in addition to clearing it. 939 * @hide 940 */ 941 public static void maybeMarkCapabilitiesRestricted(NetworkCapabilities nc) { 942 for (int capability : nc.getCapabilities()) { 943 switch (capability) { 944 case NetworkCapabilities.NET_CAPABILITY_CBS: 945 case NetworkCapabilities.NET_CAPABILITY_DUN: 946 case NetworkCapabilities.NET_CAPABILITY_EIMS: 947 case NetworkCapabilities.NET_CAPABILITY_FOTA: 948 case NetworkCapabilities.NET_CAPABILITY_IA: 949 case NetworkCapabilities.NET_CAPABILITY_IMS: 950 case NetworkCapabilities.NET_CAPABILITY_RCS: 951 case NetworkCapabilities.NET_CAPABILITY_XCAP: 952 case NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED: //there by default 953 continue; 954 default: 955 // At least one capability usually provided by unrestricted 956 // networks. Conclude that this network is unrestricted. 957 return; 958 } 959 } 960 // All the capabilities are typically provided by restricted networks. 961 // Conclude that this network is restricted. 962 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 963 } 964 965 private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) { 966 if (networkType == TYPE_MOBILE) { 967 int cap = -1; 968 if ("enableMMS".equals(feature)) { 969 cap = NetworkCapabilities.NET_CAPABILITY_MMS; 970 } else if ("enableSUPL".equals(feature)) { 971 cap = NetworkCapabilities.NET_CAPABILITY_SUPL; 972 } else if ("enableDUN".equals(feature) || "enableDUNAlways".equals(feature)) { 973 cap = NetworkCapabilities.NET_CAPABILITY_DUN; 974 } else if ("enableHIPRI".equals(feature)) { 975 cap = NetworkCapabilities.NET_CAPABILITY_INTERNET; 976 } else if ("enableFOTA".equals(feature)) { 977 cap = NetworkCapabilities.NET_CAPABILITY_FOTA; 978 } else if ("enableIMS".equals(feature)) { 979 cap = NetworkCapabilities.NET_CAPABILITY_IMS; 980 } else if ("enableCBS".equals(feature)) { 981 cap = NetworkCapabilities.NET_CAPABILITY_CBS; 982 } else { 983 return null; 984 } 985 NetworkCapabilities netCap = new NetworkCapabilities(); 986 netCap.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR).addCapability(cap); 987 maybeMarkCapabilitiesRestricted(netCap); 988 return netCap; 989 } else if (networkType == TYPE_WIFI) { 990 if ("p2p".equals(feature)) { 991 NetworkCapabilities netCap = new NetworkCapabilities(); 992 netCap.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 993 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P); 994 maybeMarkCapabilitiesRestricted(netCap); 995 return netCap; 996 } 997 } 998 return null; 999 } 1000 1001 /** 1002 * Guess what the network request was trying to say so that the resulting 1003 * network is accessible via the legacy (deprecated) API such as 1004 * requestRouteToHost. 1005 * This means we should try to be fairly preceise about transport and 1006 * capability but ignore things such as networkSpecifier. 1007 * If the request has more than one transport or capability it doesn't 1008 * match the old legacy requests (they selected only single transport/capability) 1009 * so this function cannot map the request to a single legacy type and 1010 * the resulting network will not be available to the legacy APIs. 1011 * 1012 * TODO - This should be removed when the legacy APIs are removed. 1013 */ 1014 private int inferLegacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1015 if (netCap == null) { 1016 return TYPE_NONE; 1017 } 1018 1019 if (!netCap.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { 1020 return TYPE_NONE; 1021 } 1022 1023 String type = null; 1024 int result = TYPE_NONE; 1025 1026 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1027 type = "enableCBS"; 1028 result = TYPE_MOBILE_CBS; 1029 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1030 type = "enableIMS"; 1031 result = TYPE_MOBILE_IMS; 1032 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1033 type = "enableFOTA"; 1034 result = TYPE_MOBILE_FOTA; 1035 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1036 type = "enableDUN"; 1037 result = TYPE_MOBILE_DUN; 1038 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1039 type = "enableSUPL"; 1040 result = TYPE_MOBILE_SUPL; 1041 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1042 type = "enableMMS"; 1043 result = TYPE_MOBILE_MMS; 1044 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1045 type = "enableHIPRI"; 1046 result = TYPE_MOBILE_HIPRI; 1047 } 1048 if (type != null) { 1049 NetworkCapabilities testCap = networkCapabilitiesForFeature(TYPE_MOBILE, type); 1050 if (testCap.equalsNetCapabilities(netCap) && testCap.equalsTransportTypes(netCap)) { 1051 return result; 1052 } 1053 } 1054 return TYPE_NONE; 1055 } 1056 1057 private int legacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1058 if (netCap == null) return TYPE_NONE; 1059 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1060 return TYPE_MOBILE_CBS; 1061 } 1062 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1063 return TYPE_MOBILE_IMS; 1064 } 1065 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1066 return TYPE_MOBILE_FOTA; 1067 } 1068 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1069 return TYPE_MOBILE_DUN; 1070 } 1071 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1072 return TYPE_MOBILE_SUPL; 1073 } 1074 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1075 return TYPE_MOBILE_MMS; 1076 } 1077 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1078 return TYPE_MOBILE_HIPRI; 1079 } 1080 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P)) { 1081 return TYPE_WIFI_P2P; 1082 } 1083 return TYPE_NONE; 1084 } 1085 1086 private static class LegacyRequest { 1087 NetworkCapabilities networkCapabilities; 1088 NetworkRequest networkRequest; 1089 int expireSequenceNumber; 1090 Network currentNetwork; 1091 int delay = -1; 1092 1093 private void clearDnsBinding() { 1094 if (currentNetwork != null) { 1095 currentNetwork = null; 1096 setProcessDefaultNetworkForHostResolution(null); 1097 } 1098 } 1099 1100 NetworkCallback networkCallback = new NetworkCallback() { 1101 @Override 1102 public void onAvailable(Network network) { 1103 currentNetwork = network; 1104 Log.d(TAG, "startUsingNetworkFeature got Network:" + network); 1105 setProcessDefaultNetworkForHostResolution(network); 1106 } 1107 @Override 1108 public void onLost(Network network) { 1109 if (network.equals(currentNetwork)) clearDnsBinding(); 1110 Log.d(TAG, "startUsingNetworkFeature lost Network:" + network); 1111 } 1112 }; 1113 } 1114 1115 private static HashMap<NetworkCapabilities, LegacyRequest> sLegacyRequests = 1116 new HashMap<NetworkCapabilities, LegacyRequest>(); 1117 1118 private NetworkRequest findRequestForFeature(NetworkCapabilities netCap) { 1119 synchronized (sLegacyRequests) { 1120 LegacyRequest l = sLegacyRequests.get(netCap); 1121 if (l != null) return l.networkRequest; 1122 } 1123 return null; 1124 } 1125 1126 private void renewRequestLocked(LegacyRequest l) { 1127 l.expireSequenceNumber++; 1128 Log.d(TAG, "renewing request to seqNum " + l.expireSequenceNumber); 1129 sendExpireMsgForFeature(l.networkCapabilities, l.expireSequenceNumber, l.delay); 1130 } 1131 1132 private void expireRequest(NetworkCapabilities netCap, int sequenceNum) { 1133 int ourSeqNum = -1; 1134 synchronized (sLegacyRequests) { 1135 LegacyRequest l = sLegacyRequests.get(netCap); 1136 if (l == null) return; 1137 ourSeqNum = l.expireSequenceNumber; 1138 if (l.expireSequenceNumber == sequenceNum) removeRequestForFeature(netCap); 1139 } 1140 Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum); 1141 } 1142 1143 private NetworkRequest requestNetworkForFeatureLocked(NetworkCapabilities netCap) { 1144 int delay = -1; 1145 int type = legacyTypeForNetworkCapabilities(netCap); 1146 try { 1147 delay = mService.getRestoreDefaultNetworkDelay(type); 1148 } catch (RemoteException e) {} 1149 LegacyRequest l = new LegacyRequest(); 1150 l.networkCapabilities = netCap; 1151 l.delay = delay; 1152 l.expireSequenceNumber = 0; 1153 l.networkRequest = sendRequestForNetwork(netCap, l.networkCallback, 0, 1154 REQUEST, type); 1155 if (l.networkRequest == null) return null; 1156 sLegacyRequests.put(netCap, l); 1157 sendExpireMsgForFeature(netCap, l.expireSequenceNumber, delay); 1158 return l.networkRequest; 1159 } 1160 1161 private void sendExpireMsgForFeature(NetworkCapabilities netCap, int seqNum, int delay) { 1162 if (delay >= 0) { 1163 Log.d(TAG, "sending expire msg with seqNum " + seqNum + " and delay " + delay); 1164 Message msg = sCallbackHandler.obtainMessage(EXPIRE_LEGACY_REQUEST, seqNum, 0, netCap); 1165 sCallbackHandler.sendMessageDelayed(msg, delay); 1166 } 1167 } 1168 1169 private boolean removeRequestForFeature(NetworkCapabilities netCap) { 1170 final LegacyRequest l; 1171 synchronized (sLegacyRequests) { 1172 l = sLegacyRequests.remove(netCap); 1173 } 1174 if (l == null) return false; 1175 unregisterNetworkCallback(l.networkCallback); 1176 l.clearDnsBinding(); 1177 return true; 1178 } 1179 1180 /** 1181 * Ensure that a network route exists to deliver traffic to the specified 1182 * host via the specified network interface. An attempt to add a route that 1183 * already exists is ignored, but treated as successful. 1184 * <p>This method requires the caller to hold the permission 1185 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1186 * @param networkType the type of the network over which traffic to the specified 1187 * host is to be routed 1188 * @param hostAddress the IP address of the host to which the route is desired 1189 * @return {@code true} on success, {@code false} on failure 1190 * 1191 * @deprecated Deprecated in favor of the {@link #requestNetwork}, 1192 * {@link #bindProcessToNetwork} and {@link Network#getSocketFactory} api. 1193 */ 1194 public boolean requestRouteToHost(int networkType, int hostAddress) { 1195 return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress)); 1196 } 1197 1198 /** 1199 * Ensure that a network route exists to deliver traffic to the specified 1200 * host via the specified network interface. An attempt to add a route that 1201 * already exists is ignored, but treated as successful. 1202 * <p>This method requires the caller to hold the permission 1203 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1204 * @param networkType the type of the network over which traffic to the specified 1205 * host is to be routed 1206 * @param hostAddress the IP address of the host to which the route is desired 1207 * @return {@code true} on success, {@code false} on failure 1208 * @hide 1209 * @deprecated Deprecated in favor of the {@link #requestNetwork} and 1210 * {@link #bindProcessToNetwork} api. 1211 */ 1212 public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) { 1213 try { 1214 return mService.requestRouteToHostAddress(networkType, hostAddress.getAddress()); 1215 } catch (RemoteException e) { 1216 return false; 1217 } 1218 } 1219 1220 /** 1221 * Returns the value of the setting for background data usage. If false, 1222 * applications should not use the network if the application is not in the 1223 * foreground. Developers should respect this setting, and check the value 1224 * of this before performing any background data operations. 1225 * <p> 1226 * All applications that have background services that use the network 1227 * should listen to {@link #ACTION_BACKGROUND_DATA_SETTING_CHANGED}. 1228 * <p> 1229 * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability of 1230 * background data depends on several combined factors, and this method will 1231 * always return {@code true}. Instead, when background data is unavailable, 1232 * {@link #getActiveNetworkInfo()} will now appear disconnected. 1233 * 1234 * @return Whether background data usage is allowed. 1235 */ 1236 @Deprecated 1237 public boolean getBackgroundDataSetting() { 1238 // assume that background data is allowed; final authority is 1239 // NetworkInfo which may be blocked. 1240 return true; 1241 } 1242 1243 /** 1244 * Sets the value of the setting for background data usage. 1245 * 1246 * @param allowBackgroundData Whether an application should use data while 1247 * it is in the background. 1248 * 1249 * @attr ref android.Manifest.permission#CHANGE_BACKGROUND_DATA_SETTING 1250 * @see #getBackgroundDataSetting() 1251 * @hide 1252 */ 1253 @Deprecated 1254 public void setBackgroundDataSetting(boolean allowBackgroundData) { 1255 // ignored 1256 } 1257 1258 /** 1259 * Return quota status for the current active network, or {@code null} if no 1260 * network is active. Quota status can change rapidly, so these values 1261 * shouldn't be cached. 1262 * 1263 * <p>This method requires the caller to hold the permission 1264 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1265 * 1266 * @hide 1267 */ 1268 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1269 try { 1270 return mService.getActiveNetworkQuotaInfo(); 1271 } catch (RemoteException e) { 1272 return null; 1273 } 1274 } 1275 1276 /** 1277 * @hide 1278 * @deprecated Talk to TelephonyManager directly 1279 */ 1280 public boolean getMobileDataEnabled() { 1281 IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE); 1282 if (b != null) { 1283 try { 1284 ITelephony it = ITelephony.Stub.asInterface(b); 1285 int subId = SubscriptionManager.getDefaultDataSubId(); 1286 Log.d("ConnectivityManager", "getMobileDataEnabled()+ subId=" + subId); 1287 boolean retVal = it.getDataEnabled(subId); 1288 Log.d("ConnectivityManager", "getMobileDataEnabled()- subId=" + subId 1289 + " retVal=" + retVal); 1290 return retVal; 1291 } catch (RemoteException e) { } 1292 } 1293 Log.d("ConnectivityManager", "getMobileDataEnabled()- remote exception retVal=false"); 1294 return false; 1295 } 1296 1297 /** 1298 * Callback for use with {@link ConnectivityManager#addDefaultNetworkActiveListener} 1299 * to find out when the system default network has gone in to a high power state. 1300 */ 1301 public interface OnNetworkActiveListener { 1302 /** 1303 * Called on the main thread of the process to report that the current data network 1304 * has become active, and it is now a good time to perform any pending network 1305 * operations. Note that this listener only tells you when the network becomes 1306 * active; if at any other time you want to know whether it is active (and thus okay 1307 * to initiate network traffic), you can retrieve its instantaneous state with 1308 * {@link ConnectivityManager#isDefaultNetworkActive}. 1309 */ 1310 public void onNetworkActive(); 1311 } 1312 1313 private INetworkManagementService getNetworkManagementService() { 1314 synchronized (this) { 1315 if (mNMService != null) { 1316 return mNMService; 1317 } 1318 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1319 mNMService = INetworkManagementService.Stub.asInterface(b); 1320 return mNMService; 1321 } 1322 } 1323 1324 private final ArrayMap<OnNetworkActiveListener, INetworkActivityListener> 1325 mNetworkActivityListeners 1326 = new ArrayMap<OnNetworkActiveListener, INetworkActivityListener>(); 1327 1328 /** 1329 * Start listening to reports when the system's default data network is active, meaning it is 1330 * a good time to perform network traffic. Use {@link #isDefaultNetworkActive()} 1331 * to determine the current state of the system's default network after registering the 1332 * listener. 1333 * <p> 1334 * If the process default network has been set with 1335 * {@link ConnectivityManager#bindProcessToNetwork} this function will not 1336 * reflect the process's default, but the system default. 1337 * 1338 * @param l The listener to be told when the network is active. 1339 */ 1340 public void addDefaultNetworkActiveListener(final OnNetworkActiveListener l) { 1341 INetworkActivityListener rl = new INetworkActivityListener.Stub() { 1342 @Override 1343 public void onNetworkActive() throws RemoteException { 1344 l.onNetworkActive(); 1345 } 1346 }; 1347 1348 try { 1349 getNetworkManagementService().registerNetworkActivityListener(rl); 1350 mNetworkActivityListeners.put(l, rl); 1351 } catch (RemoteException e) { 1352 } 1353 } 1354 1355 /** 1356 * Remove network active listener previously registered with 1357 * {@link #addDefaultNetworkActiveListener}. 1358 * 1359 * @param l Previously registered listener. 1360 */ 1361 public void removeDefaultNetworkActiveListener(OnNetworkActiveListener l) { 1362 INetworkActivityListener rl = mNetworkActivityListeners.get(l); 1363 if (rl == null) { 1364 throw new IllegalArgumentException("Listener not registered: " + l); 1365 } 1366 try { 1367 getNetworkManagementService().unregisterNetworkActivityListener(rl); 1368 } catch (RemoteException e) { 1369 } 1370 } 1371 1372 /** 1373 * Return whether the data network is currently active. An active network means that 1374 * it is currently in a high power state for performing data transmission. On some 1375 * types of networks, it may be expensive to move and stay in such a state, so it is 1376 * more power efficient to batch network traffic together when the radio is already in 1377 * this state. This method tells you whether right now is currently a good time to 1378 * initiate network traffic, as the network is already active. 1379 */ 1380 public boolean isDefaultNetworkActive() { 1381 try { 1382 return getNetworkManagementService().isNetworkActive(); 1383 } catch (RemoteException e) { 1384 } 1385 return false; 1386 } 1387 1388 /** 1389 * {@hide} 1390 */ 1391 public ConnectivityManager(IConnectivityManager service) { 1392 mService = checkNotNull(service, "missing IConnectivityManager"); 1393 sInstance = this; 1394 } 1395 1396 /** {@hide} */ 1397 public static ConnectivityManager from(Context context) { 1398 return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 1399 } 1400 1401 /** {@hide */ 1402 public static final void enforceTetherChangePermission(Context context) { 1403 if (context.getResources().getStringArray( 1404 com.android.internal.R.array.config_mobile_hotspot_provision_app).length == 2) { 1405 // Have a provisioning app - must only let system apps (which check this app) 1406 // turn on tethering 1407 context.enforceCallingOrSelfPermission( 1408 android.Manifest.permission.CONNECTIVITY_INTERNAL, "ConnectivityService"); 1409 } else { 1410 context.enforceCallingOrSelfPermission( 1411 android.Manifest.permission.CHANGE_NETWORK_STATE, "ConnectivityService"); 1412 } 1413 } 1414 1415 /** 1416 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1417 * situations where a Context pointer is unavailable. 1418 * @hide 1419 */ 1420 static ConnectivityManager getInstanceOrNull() { 1421 return sInstance; 1422 } 1423 1424 /** 1425 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1426 * situations where a Context pointer is unavailable. 1427 * @hide 1428 */ 1429 private static ConnectivityManager getInstance() { 1430 if (getInstanceOrNull() == null) { 1431 throw new IllegalStateException("No ConnectivityManager yet constructed"); 1432 } 1433 return getInstanceOrNull(); 1434 } 1435 1436 /** 1437 * Get the set of tetherable, available interfaces. This list is limited by 1438 * device configuration and current interface existence. 1439 * 1440 * @return an array of 0 or more Strings of tetherable interface names. 1441 * 1442 * <p>This method requires the caller to hold the permission 1443 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1444 * {@hide} 1445 */ 1446 public String[] getTetherableIfaces() { 1447 try { 1448 return mService.getTetherableIfaces(); 1449 } catch (RemoteException e) { 1450 return new String[0]; 1451 } 1452 } 1453 1454 /** 1455 * Get the set of tethered interfaces. 1456 * 1457 * @return an array of 0 or more String of currently tethered interface names. 1458 * 1459 * <p>This method requires the caller to hold the permission 1460 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1461 * {@hide} 1462 */ 1463 public String[] getTetheredIfaces() { 1464 try { 1465 return mService.getTetheredIfaces(); 1466 } catch (RemoteException e) { 1467 return new String[0]; 1468 } 1469 } 1470 1471 /** 1472 * Get the set of interface names which attempted to tether but 1473 * failed. Re-attempting to tether may cause them to reset to the Tethered 1474 * state. Alternatively, causing the interface to be destroyed and recreated 1475 * may cause them to reset to the available state. 1476 * {@link ConnectivityManager#getLastTetherError} can be used to get more 1477 * information on the cause of the errors. 1478 * 1479 * @return an array of 0 or more String indicating the interface names 1480 * which failed to tether. 1481 * 1482 * <p>This method requires the caller to hold the permission 1483 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1484 * {@hide} 1485 */ 1486 public String[] getTetheringErroredIfaces() { 1487 try { 1488 return mService.getTetheringErroredIfaces(); 1489 } catch (RemoteException e) { 1490 return new String[0]; 1491 } 1492 } 1493 1494 /** 1495 * Get the set of tethered dhcp ranges. 1496 * 1497 * @return an array of 0 or more {@code String} of tethered dhcp ranges. 1498 * {@hide} 1499 */ 1500 public String[] getTetheredDhcpRanges() { 1501 try { 1502 return mService.getTetheredDhcpRanges(); 1503 } catch (RemoteException e) { 1504 return new String[0]; 1505 } 1506 } 1507 1508 /** 1509 * Attempt to tether the named interface. This will setup a dhcp server 1510 * on the interface, forward and NAT IP packets and forward DNS requests 1511 * to the best active upstream network interface. Note that if no upstream 1512 * IP network interface is available, dhcp will still run and traffic will be 1513 * allowed between the tethered devices and this device, though upstream net 1514 * access will of course fail until an upstream network interface becomes 1515 * active. 1516 * 1517 * @param iface the interface name to tether. 1518 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1519 * 1520 * <p>This method requires the caller to hold the permission 1521 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1522 * {@hide} 1523 */ 1524 public int tether(String iface) { 1525 try { 1526 return mService.tether(iface); 1527 } catch (RemoteException e) { 1528 return TETHER_ERROR_SERVICE_UNAVAIL; 1529 } 1530 } 1531 1532 /** 1533 * Stop tethering the named interface. 1534 * 1535 * @param iface the interface name to untether. 1536 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1537 * 1538 * <p>This method requires the caller to hold the permission 1539 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1540 * {@hide} 1541 */ 1542 public int untether(String iface) { 1543 try { 1544 return mService.untether(iface); 1545 } catch (RemoteException e) { 1546 return TETHER_ERROR_SERVICE_UNAVAIL; 1547 } 1548 } 1549 1550 /** 1551 * Check if the device allows for tethering. It may be disabled via 1552 * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or 1553 * due to device configuration. 1554 * 1555 * @return a boolean - {@code true} indicating Tethering is supported. 1556 * 1557 * <p>This method requires the caller to hold the permission 1558 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1559 * {@hide} 1560 */ 1561 public boolean isTetheringSupported() { 1562 try { 1563 return mService.isTetheringSupported(); 1564 } catch (RemoteException e) { 1565 return false; 1566 } 1567 } 1568 1569 /** 1570 * Get the list of regular expressions that define any tetherable 1571 * USB network interfaces. If USB tethering is not supported by the 1572 * device, this list should be empty. 1573 * 1574 * @return an array of 0 or more regular expression Strings defining 1575 * what interfaces are considered tetherable usb interfaces. 1576 * 1577 * <p>This method requires the caller to hold the permission 1578 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1579 * {@hide} 1580 */ 1581 public String[] getTetherableUsbRegexs() { 1582 try { 1583 return mService.getTetherableUsbRegexs(); 1584 } catch (RemoteException e) { 1585 return new String[0]; 1586 } 1587 } 1588 1589 /** 1590 * Get the list of regular expressions that define any tetherable 1591 * Wifi network interfaces. If Wifi tethering is not supported by the 1592 * device, this list should be empty. 1593 * 1594 * @return an array of 0 or more regular expression Strings defining 1595 * what interfaces are considered tetherable wifi interfaces. 1596 * 1597 * <p>This method requires the caller to hold the permission 1598 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1599 * {@hide} 1600 */ 1601 public String[] getTetherableWifiRegexs() { 1602 try { 1603 return mService.getTetherableWifiRegexs(); 1604 } catch (RemoteException e) { 1605 return new String[0]; 1606 } 1607 } 1608 1609 /** 1610 * Get the list of regular expressions that define any tetherable 1611 * Bluetooth network interfaces. If Bluetooth tethering is not supported by the 1612 * device, this list should be empty. 1613 * 1614 * @return an array of 0 or more regular expression Strings defining 1615 * what interfaces are considered tetherable bluetooth interfaces. 1616 * 1617 * <p>This method requires the caller to hold the permission 1618 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1619 * {@hide} 1620 */ 1621 public String[] getTetherableBluetoothRegexs() { 1622 try { 1623 return mService.getTetherableBluetoothRegexs(); 1624 } catch (RemoteException e) { 1625 return new String[0]; 1626 } 1627 } 1628 1629 /** 1630 * Attempt to both alter the mode of USB and Tethering of USB. A 1631 * utility method to deal with some of the complexity of USB - will 1632 * attempt to switch to Rndis and subsequently tether the resulting 1633 * interface on {@code true} or turn off tethering and switch off 1634 * Rndis on {@code false}. 1635 * 1636 * @param enable a boolean - {@code true} to enable tethering 1637 * @return error a {@code TETHER_ERROR} value indicating success or failure type 1638 * 1639 * <p>This method requires the caller to hold the permission 1640 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}. 1641 * {@hide} 1642 */ 1643 public int setUsbTethering(boolean enable) { 1644 try { 1645 return mService.setUsbTethering(enable); 1646 } catch (RemoteException e) { 1647 return TETHER_ERROR_SERVICE_UNAVAIL; 1648 } 1649 } 1650 1651 /** {@hide} */ 1652 public static final int TETHER_ERROR_NO_ERROR = 0; 1653 /** {@hide} */ 1654 public static final int TETHER_ERROR_UNKNOWN_IFACE = 1; 1655 /** {@hide} */ 1656 public static final int TETHER_ERROR_SERVICE_UNAVAIL = 2; 1657 /** {@hide} */ 1658 public static final int TETHER_ERROR_UNSUPPORTED = 3; 1659 /** {@hide} */ 1660 public static final int TETHER_ERROR_UNAVAIL_IFACE = 4; 1661 /** {@hide} */ 1662 public static final int TETHER_ERROR_MASTER_ERROR = 5; 1663 /** {@hide} */ 1664 public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6; 1665 /** {@hide} */ 1666 public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7; 1667 /** {@hide} */ 1668 public static final int TETHER_ERROR_ENABLE_NAT_ERROR = 8; 1669 /** {@hide} */ 1670 public static final int TETHER_ERROR_DISABLE_NAT_ERROR = 9; 1671 /** {@hide} */ 1672 public static final int TETHER_ERROR_IFACE_CFG_ERROR = 10; 1673 1674 /** 1675 * Get a more detailed error code after a Tethering or Untethering 1676 * request asynchronously failed. 1677 * 1678 * @param iface The name of the interface of interest 1679 * @return error The error code of the last error tethering or untethering the named 1680 * interface 1681 * 1682 * <p>This method requires the caller to hold the permission 1683 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1684 * {@hide} 1685 */ 1686 public int getLastTetherError(String iface) { 1687 try { 1688 return mService.getLastTetherError(iface); 1689 } catch (RemoteException e) { 1690 return TETHER_ERROR_SERVICE_UNAVAIL; 1691 } 1692 } 1693 1694 /** 1695 * Report network connectivity status. This is currently used only 1696 * to alter status bar UI. 1697 * 1698 * @param networkType The type of network you want to report on 1699 * @param percentage The quality of the connection 0 is bad, 100 is good 1700 * 1701 * <p>This method requires the caller to hold the permission 1702 * {@link android.Manifest.permission#STATUS_BAR}. 1703 * {@hide} 1704 */ 1705 public void reportInetCondition(int networkType, int percentage) { 1706 try { 1707 mService.reportInetCondition(networkType, percentage); 1708 } catch (RemoteException e) { 1709 } 1710 } 1711 1712 /** 1713 * Report a problem network to the framework. This provides a hint to the system 1714 * that there might be connectivity problems on this network and may cause 1715 * the framework to re-evaluate network connectivity and/or switch to another 1716 * network. 1717 * 1718 * @param network The {@link Network} the application was attempting to use 1719 * or {@code null} to indicate the current default network. 1720 * @deprecated Use {@link #reportNetworkConnectivity} which allows reporting both 1721 * working and non-working connectivity. 1722 */ 1723 public void reportBadNetwork(Network network) { 1724 try { 1725 // One of these will be ignored because it matches system's current state. 1726 // The other will trigger the necessary reevaluation. 1727 mService.reportNetworkConnectivity(network, true); 1728 mService.reportNetworkConnectivity(network, false); 1729 } catch (RemoteException e) { 1730 } 1731 } 1732 1733 /** 1734 * Report to the framework whether a network has working connectivity. 1735 * This provides a hint to the system that a particular network is providing 1736 * working connectivity or not. In response the framework may re-evaluate 1737 * the network's connectivity and might take further action thereafter. 1738 * 1739 * @param network The {@link Network} the application was attempting to use 1740 * or {@code null} to indicate the current default network. 1741 * @param hasConnectivity {@code true} if the application was able to successfully access the 1742 * Internet using {@code network} or {@code false} if not. 1743 */ 1744 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 1745 try { 1746 mService.reportNetworkConnectivity(network, hasConnectivity); 1747 } catch (RemoteException e) { 1748 } 1749 } 1750 1751 /** 1752 * Set a network-independent global http proxy. This is not normally what you want 1753 * for typical HTTP proxies - they are general network dependent. However if you're 1754 * doing something unusual like general internal filtering this may be useful. On 1755 * a private network where the proxy is not accessible, you may break HTTP using this. 1756 * 1757 * @param p The a {@link ProxyInfo} object defining the new global 1758 * HTTP proxy. A {@code null} value will clear the global HTTP proxy. 1759 * 1760 * <p>This method requires the caller to hold the permission 1761 * android.Manifest.permission#CONNECTIVITY_INTERNAL. 1762 * @hide 1763 */ 1764 public void setGlobalProxy(ProxyInfo p) { 1765 try { 1766 mService.setGlobalProxy(p); 1767 } catch (RemoteException e) { 1768 } 1769 } 1770 1771 /** 1772 * Retrieve any network-independent global HTTP proxy. 1773 * 1774 * @return {@link ProxyInfo} for the current global HTTP proxy or {@code null} 1775 * if no global HTTP proxy is set. 1776 * 1777 * <p>This method requires the caller to hold the permission 1778 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1779 * @hide 1780 */ 1781 public ProxyInfo getGlobalProxy() { 1782 try { 1783 return mService.getGlobalProxy(); 1784 } catch (RemoteException e) { 1785 return null; 1786 } 1787 } 1788 1789 /** 1790 * Get the current default HTTP proxy settings. If a global proxy is set it will be returned, 1791 * otherwise if this process is bound to a {@link Network} using 1792 * {@link #bindProcessToNetwork} then that {@code Network}'s proxy is returned, otherwise 1793 * the default network's proxy is returned. 1794 * 1795 * @return the {@link ProxyInfo} for the current HTTP proxy, or {@code null} if no 1796 * HTTP proxy is active. 1797 */ 1798 public ProxyInfo getDefaultProxy() { 1799 final Network network = getBoundNetworkForProcess(); 1800 if (network != null) { 1801 final ProxyInfo globalProxy = getGlobalProxy(); 1802 if (globalProxy != null) return globalProxy; 1803 final LinkProperties lp = getLinkProperties(network); 1804 if (lp != null) return lp.getHttpProxy(); 1805 return null; 1806 } 1807 try { 1808 return mService.getDefaultProxy(); 1809 } catch (RemoteException e) { 1810 return null; 1811 } 1812 } 1813 1814 /** 1815 * Returns true if the hardware supports the given network type 1816 * else it returns false. This doesn't indicate we have coverage 1817 * or are authorized onto a network, just whether or not the 1818 * hardware supports it. For example a GSM phone without a SIM 1819 * should still return {@code true} for mobile data, but a wifi only 1820 * tablet would return {@code false}. 1821 * 1822 * @param networkType The network type we'd like to check 1823 * @return {@code true} if supported, else {@code false} 1824 * 1825 * <p>This method requires the caller to hold the permission 1826 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1827 * @hide 1828 */ 1829 public boolean isNetworkSupported(int networkType) { 1830 try { 1831 return mService.isNetworkSupported(networkType); 1832 } catch (RemoteException e) {} 1833 return false; 1834 } 1835 1836 /** 1837 * Returns if the currently active data network is metered. A network is 1838 * classified as metered when the user is sensitive to heavy data usage on 1839 * that connection due to monetary costs, data limitations or 1840 * battery/performance issues. You should check this before doing large 1841 * data transfers, and warn the user or delay the operation until another 1842 * network is available. 1843 * 1844 * @return {@code true} if large transfers should be avoided, otherwise 1845 * {@code false}. 1846 * 1847 * <p>This method requires the caller to hold the permission 1848 * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}. 1849 */ 1850 public boolean isActiveNetworkMetered() { 1851 try { 1852 return mService.isActiveNetworkMetered(); 1853 } catch (RemoteException e) { 1854 return false; 1855 } 1856 } 1857 1858 /** 1859 * If the LockdownVpn mechanism is enabled, updates the vpn 1860 * with a reload of its profile. 1861 * 1862 * @return a boolean with {@code} indicating success 1863 * 1864 * <p>This method can only be called by the system UID 1865 * {@hide} 1866 */ 1867 public boolean updateLockdownVpn() { 1868 try { 1869 return mService.updateLockdownVpn(); 1870 } catch (RemoteException e) { 1871 return false; 1872 } 1873 } 1874 1875 /** 1876 * Signal that the captive portal check on the indicated network 1877 * is complete and whether its a captive portal or not. 1878 * 1879 * @param info the {@link NetworkInfo} object for the networkType 1880 * in question. 1881 * @param isCaptivePortal true/false. 1882 * 1883 * <p>This method requires the caller to hold the permission 1884 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. 1885 * {@hide} 1886 */ 1887 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1888 try { 1889 mService.captivePortalCheckCompleted(info, isCaptivePortal); 1890 } catch (RemoteException e) { 1891 } 1892 } 1893 1894 /** 1895 * Check mobile provisioning. 1896 * 1897 * @param suggestedTimeOutMs, timeout in milliseconds 1898 * 1899 * @return time out that will be used, maybe less that suggestedTimeOutMs 1900 * -1 if an error. 1901 * 1902 * {@hide} 1903 */ 1904 public int checkMobileProvisioning(int suggestedTimeOutMs) { 1905 int timeOutMs = -1; 1906 try { 1907 timeOutMs = mService.checkMobileProvisioning(suggestedTimeOutMs); 1908 } catch (RemoteException e) { 1909 } 1910 return timeOutMs; 1911 } 1912 1913 /** 1914 * Get the mobile provisioning url. 1915 * {@hide} 1916 */ 1917 public String getMobileProvisioningUrl() { 1918 try { 1919 return mService.getMobileProvisioningUrl(); 1920 } catch (RemoteException e) { 1921 } 1922 return null; 1923 } 1924 1925 /** 1926 * Get the mobile redirected provisioning url. 1927 * {@hide} 1928 */ 1929 public String getMobileRedirectedProvisioningUrl() { 1930 try { 1931 return mService.getMobileRedirectedProvisioningUrl(); 1932 } catch (RemoteException e) { 1933 } 1934 return null; 1935 } 1936 1937 /** 1938 * Set sign in error notification to visible or in visible 1939 * 1940 * @param visible 1941 * @param networkType 1942 * 1943 * {@hide} 1944 */ 1945 public void setProvisioningNotificationVisible(boolean visible, int networkType, 1946 String action) { 1947 try { 1948 mService.setProvisioningNotificationVisible(visible, networkType, action); 1949 } catch (RemoteException e) { 1950 } 1951 } 1952 1953 /** 1954 * Set the value for enabling/disabling airplane mode 1955 * 1956 * @param enable whether to enable airplane mode or not 1957 * 1958 * <p>This method requires the caller to hold the permission 1959 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}. 1960 * @hide 1961 */ 1962 public void setAirplaneMode(boolean enable) { 1963 try { 1964 mService.setAirplaneMode(enable); 1965 } catch (RemoteException e) { 1966 } 1967 } 1968 1969 /** {@hide} */ 1970 public void registerNetworkFactory(Messenger messenger, String name) { 1971 try { 1972 mService.registerNetworkFactory(messenger, name); 1973 } catch (RemoteException e) { } 1974 } 1975 1976 /** {@hide} */ 1977 public void unregisterNetworkFactory(Messenger messenger) { 1978 try { 1979 mService.unregisterNetworkFactory(messenger); 1980 } catch (RemoteException e) { } 1981 } 1982 1983 /** 1984 * @hide 1985 * Register a NetworkAgent with ConnectivityService. 1986 * @return NetID corresponding to NetworkAgent. 1987 */ 1988 public int registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp, 1989 NetworkCapabilities nc, int score, NetworkMisc misc) { 1990 try { 1991 return mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc); 1992 } catch (RemoteException e) { 1993 return NETID_UNSET; 1994 } 1995 } 1996 1997 /** 1998 * Base class for NetworkRequest callbacks. Used for notifications about network 1999 * changes. Should be extended by applications wanting notifications. 2000 */ 2001 public static class NetworkCallback { 2002 /** @hide */ 2003 public static final int PRECHECK = 1; 2004 /** @hide */ 2005 public static final int AVAILABLE = 2; 2006 /** @hide */ 2007 public static final int LOSING = 3; 2008 /** @hide */ 2009 public static final int LOST = 4; 2010 /** @hide */ 2011 public static final int UNAVAIL = 5; 2012 /** @hide */ 2013 public static final int CAP_CHANGED = 6; 2014 /** @hide */ 2015 public static final int PROP_CHANGED = 7; 2016 /** @hide */ 2017 public static final int CANCELED = 8; 2018 2019 /** 2020 * @hide 2021 * Called whenever the framework connects to a network that it may use to 2022 * satisfy this request 2023 */ 2024 public void onPreCheck(Network network) {} 2025 2026 /** 2027 * Called when the framework connects and has declared new network ready for use. 2028 * This callback may be called more than once if the {@link Network} that is 2029 * satisfying the request changes. 2030 * 2031 * @param network The {@link Network} of the satisfying network. 2032 */ 2033 public void onAvailable(Network network) {} 2034 2035 /** 2036 * Called when the network is about to be disconnected. Often paired with an 2037 * {@link NetworkCallback#onAvailable} call with the new replacement network 2038 * for graceful handover. This may not be called if we have a hard loss 2039 * (loss without warning). This may be followed by either a 2040 * {@link NetworkCallback#onLost} call or a 2041 * {@link NetworkCallback#onAvailable} call for this network depending 2042 * on whether we lose or regain it. 2043 * 2044 * @param network The {@link Network} that is about to be disconnected. 2045 * @param maxMsToLive The time in ms the framework will attempt to keep the 2046 * network connected. Note that the network may suffer a 2047 * hard loss at any time. 2048 */ 2049 public void onLosing(Network network, int maxMsToLive) {} 2050 2051 /** 2052 * Called when the framework has a hard loss of the network or when the 2053 * graceful failure ends. 2054 * 2055 * @param network The {@link Network} lost. 2056 */ 2057 public void onLost(Network network) {} 2058 2059 /** 2060 * Called if no network is found in the given timeout time. If no timeout is given, 2061 * this will not be called. 2062 * @hide 2063 */ 2064 public void onUnavailable() {} 2065 2066 /** 2067 * Called when the network the framework connected to for this request 2068 * changes capabilities but still satisfies the stated need. 2069 * 2070 * @param network The {@link Network} whose capabilities have changed. 2071 * @param networkCapabilities The new {@link NetworkCapabilities} for this network. 2072 */ 2073 public void onCapabilitiesChanged(Network network, 2074 NetworkCapabilities networkCapabilities) {} 2075 2076 /** 2077 * Called when the network the framework connected to for this request 2078 * changes {@link LinkProperties}. 2079 * 2080 * @param network The {@link Network} whose link properties have changed. 2081 * @param linkProperties The new {@link LinkProperties} for this network. 2082 */ 2083 public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) {} 2084 2085 private NetworkRequest networkRequest; 2086 } 2087 2088 private static final int BASE = Protocol.BASE_CONNECTIVITY_MANAGER; 2089 /** @hide obj = pair(NetworkRequest, Network) */ 2090 public static final int CALLBACK_PRECHECK = BASE + 1; 2091 /** @hide obj = pair(NetworkRequest, Network) */ 2092 public static final int CALLBACK_AVAILABLE = BASE + 2; 2093 /** @hide obj = pair(NetworkRequest, Network), arg1 = ttl */ 2094 public static final int CALLBACK_LOSING = BASE + 3; 2095 /** @hide obj = pair(NetworkRequest, Network) */ 2096 public static final int CALLBACK_LOST = BASE + 4; 2097 /** @hide obj = NetworkRequest */ 2098 public static final int CALLBACK_UNAVAIL = BASE + 5; 2099 /** @hide obj = pair(NetworkRequest, Network) */ 2100 public static final int CALLBACK_CAP_CHANGED = BASE + 6; 2101 /** @hide obj = pair(NetworkRequest, Network) */ 2102 public static final int CALLBACK_IP_CHANGED = BASE + 7; 2103 /** @hide obj = NetworkRequest */ 2104 public static final int CALLBACK_RELEASED = BASE + 8; 2105 /** @hide */ 2106 public static final int CALLBACK_EXIT = BASE + 9; 2107 /** @hide obj = NetworkCapabilities, arg1 = seq number */ 2108 private static final int EXPIRE_LEGACY_REQUEST = BASE + 10; 2109 2110 private class CallbackHandler extends Handler { 2111 private final HashMap<NetworkRequest, NetworkCallback>mCallbackMap; 2112 private final AtomicInteger mRefCount; 2113 private static final String TAG = "ConnectivityManager.CallbackHandler"; 2114 private final ConnectivityManager mCm; 2115 2116 CallbackHandler(Looper looper, HashMap<NetworkRequest, NetworkCallback>callbackMap, 2117 AtomicInteger refCount, ConnectivityManager cm) { 2118 super(looper); 2119 mCallbackMap = callbackMap; 2120 mRefCount = refCount; 2121 mCm = cm; 2122 } 2123 2124 @Override 2125 public void handleMessage(Message message) { 2126 Log.d(TAG, "CM callback handler got msg " + message.what); 2127 switch (message.what) { 2128 case CALLBACK_PRECHECK: { 2129 NetworkRequest request = (NetworkRequest)getObject(message, 2130 NetworkRequest.class); 2131 NetworkCallback callbacks = getCallbacks(request); 2132 if (callbacks != null) { 2133 callbacks.onPreCheck((Network)getObject(message, Network.class)); 2134 } else { 2135 Log.e(TAG, "callback not found for PRECHECK message"); 2136 } 2137 break; 2138 } 2139 case CALLBACK_AVAILABLE: { 2140 NetworkRequest request = (NetworkRequest)getObject(message, 2141 NetworkRequest.class); 2142 NetworkCallback callbacks = getCallbacks(request); 2143 if (callbacks != null) { 2144 callbacks.onAvailable((Network)getObject(message, Network.class)); 2145 } else { 2146 Log.e(TAG, "callback not found for AVAILABLE message"); 2147 } 2148 break; 2149 } 2150 case CALLBACK_LOSING: { 2151 NetworkRequest request = (NetworkRequest)getObject(message, 2152 NetworkRequest.class); 2153 NetworkCallback callbacks = getCallbacks(request); 2154 if (callbacks != null) { 2155 callbacks.onLosing((Network)getObject(message, Network.class), 2156 message.arg1); 2157 } else { 2158 Log.e(TAG, "callback not found for LOSING message"); 2159 } 2160 break; 2161 } 2162 case CALLBACK_LOST: { 2163 NetworkRequest request = (NetworkRequest)getObject(message, 2164 NetworkRequest.class); 2165 2166 NetworkCallback callbacks = getCallbacks(request); 2167 if (callbacks != null) { 2168 callbacks.onLost((Network)getObject(message, Network.class)); 2169 } else { 2170 Log.e(TAG, "callback not found for LOST message"); 2171 } 2172 break; 2173 } 2174 case CALLBACK_UNAVAIL: { 2175 NetworkRequest request = (NetworkRequest)getObject(message, 2176 NetworkRequest.class); 2177 NetworkCallback callbacks = null; 2178 synchronized(mCallbackMap) { 2179 callbacks = mCallbackMap.get(request); 2180 } 2181 if (callbacks != null) { 2182 callbacks.onUnavailable(); 2183 } else { 2184 Log.e(TAG, "callback not found for UNAVAIL message"); 2185 } 2186 break; 2187 } 2188 case CALLBACK_CAP_CHANGED: { 2189 NetworkRequest request = (NetworkRequest)getObject(message, 2190 NetworkRequest.class); 2191 NetworkCallback callbacks = getCallbacks(request); 2192 if (callbacks != null) { 2193 Network network = (Network)getObject(message, Network.class); 2194 NetworkCapabilities cap = (NetworkCapabilities)getObject(message, 2195 NetworkCapabilities.class); 2196 2197 callbacks.onCapabilitiesChanged(network, cap); 2198 } else { 2199 Log.e(TAG, "callback not found for CAP_CHANGED message"); 2200 } 2201 break; 2202 } 2203 case CALLBACK_IP_CHANGED: { 2204 NetworkRequest request = (NetworkRequest)getObject(message, 2205 NetworkRequest.class); 2206 NetworkCallback callbacks = getCallbacks(request); 2207 if (callbacks != null) { 2208 Network network = (Network)getObject(message, Network.class); 2209 LinkProperties lp = (LinkProperties)getObject(message, 2210 LinkProperties.class); 2211 2212 callbacks.onLinkPropertiesChanged(network, lp); 2213 } else { 2214 Log.e(TAG, "callback not found for IP_CHANGED message"); 2215 } 2216 break; 2217 } 2218 case CALLBACK_RELEASED: { 2219 NetworkRequest req = (NetworkRequest)getObject(message, NetworkRequest.class); 2220 NetworkCallback callbacks = null; 2221 synchronized(mCallbackMap) { 2222 callbacks = mCallbackMap.remove(req); 2223 } 2224 if (callbacks != null) { 2225 synchronized(mRefCount) { 2226 if (mRefCount.decrementAndGet() == 0) { 2227 getLooper().quit(); 2228 } 2229 } 2230 } else { 2231 Log.e(TAG, "callback not found for CANCELED message"); 2232 } 2233 break; 2234 } 2235 case CALLBACK_EXIT: { 2236 Log.d(TAG, "Listener quiting"); 2237 getLooper().quit(); 2238 break; 2239 } 2240 case EXPIRE_LEGACY_REQUEST: { 2241 expireRequest((NetworkCapabilities)message.obj, message.arg1); 2242 break; 2243 } 2244 } 2245 } 2246 2247 private Object getObject(Message msg, Class c) { 2248 return msg.getData().getParcelable(c.getSimpleName()); 2249 } 2250 private NetworkCallback getCallbacks(NetworkRequest req) { 2251 synchronized(mCallbackMap) { 2252 return mCallbackMap.get(req); 2253 } 2254 } 2255 } 2256 2257 private void incCallbackHandlerRefCount() { 2258 synchronized(sCallbackRefCount) { 2259 if (sCallbackRefCount.incrementAndGet() == 1) { 2260 // TODO - switch this over to a ManagerThread or expire it when done 2261 HandlerThread callbackThread = new HandlerThread("ConnectivityManager"); 2262 callbackThread.start(); 2263 sCallbackHandler = new CallbackHandler(callbackThread.getLooper(), 2264 sNetworkCallback, sCallbackRefCount, this); 2265 } 2266 } 2267 } 2268 2269 private void decCallbackHandlerRefCount() { 2270 synchronized(sCallbackRefCount) { 2271 if (sCallbackRefCount.decrementAndGet() == 0) { 2272 sCallbackHandler.obtainMessage(CALLBACK_EXIT).sendToTarget(); 2273 sCallbackHandler = null; 2274 } 2275 } 2276 } 2277 2278 static final HashMap<NetworkRequest, NetworkCallback> sNetworkCallback = 2279 new HashMap<NetworkRequest, NetworkCallback>(); 2280 static final AtomicInteger sCallbackRefCount = new AtomicInteger(0); 2281 static CallbackHandler sCallbackHandler = null; 2282 2283 private final static int LISTEN = 1; 2284 private final static int REQUEST = 2; 2285 2286 private NetworkRequest sendRequestForNetwork(NetworkCapabilities need, 2287 NetworkCallback networkCallback, int timeoutSec, int action, 2288 int legacyType) { 2289 if (networkCallback == null) { 2290 throw new IllegalArgumentException("null NetworkCallback"); 2291 } 2292 if (need == null) throw new IllegalArgumentException("null NetworkCapabilities"); 2293 try { 2294 incCallbackHandlerRefCount(); 2295 synchronized(sNetworkCallback) { 2296 if (action == LISTEN) { 2297 networkCallback.networkRequest = mService.listenForNetwork(need, 2298 new Messenger(sCallbackHandler), new Binder()); 2299 } else { 2300 networkCallback.networkRequest = mService.requestNetwork(need, 2301 new Messenger(sCallbackHandler), timeoutSec, new Binder(), legacyType); 2302 } 2303 if (networkCallback.networkRequest != null) { 2304 sNetworkCallback.put(networkCallback.networkRequest, networkCallback); 2305 } 2306 } 2307 } catch (RemoteException e) {} 2308 if (networkCallback.networkRequest == null) decCallbackHandlerRefCount(); 2309 return networkCallback.networkRequest; 2310 } 2311 2312 /** 2313 * Request a network to satisfy a set of {@link NetworkCapabilities}. 2314 * 2315 * This {@link NetworkRequest} will live until released via 2316 * {@link #unregisterNetworkCallback} or the calling application exits. 2317 * Status of the request can be followed by listening to the various 2318 * callbacks described in {@link NetworkCallback}. The {@link Network} 2319 * can be used to direct traffic to the network. 2320 * 2321 * @param request {@link NetworkRequest} describing this request. 2322 * @param networkCallback The {@link NetworkCallback} to be utilized for this 2323 * request. Note the callback must not be shared - they 2324 * uniquely specify this request. 2325 */ 2326 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback) { 2327 sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, 2328 REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); 2329 } 2330 2331 /** 2332 * Request a network to satisfy a set of {@link NetworkCapabilities}, limited 2333 * by a timeout. 2334 * 2335 * This function behaves identically to the non-timedout version, but if a suitable 2336 * network is not found within the given time (in milliseconds) the 2337 * {@link NetworkCallback#unavailable} callback is called. The request must 2338 * still be released normally by calling {@link releaseNetworkRequest}. 2339 * @param request {@link NetworkRequest} describing this request. 2340 * @param networkCallback The callbacks to be utilized for this request. Note 2341 * the callbacks must not be shared - they uniquely specify 2342 * this request. 2343 * @param timeoutMs The time in milliseconds to attempt looking for a suitable network 2344 * before {@link NetworkCallback#unavailable} is called. 2345 * @hide 2346 */ 2347 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, 2348 int timeoutMs) { 2349 sendRequestForNetwork(request.networkCapabilities, networkCallback, timeoutMs, 2350 REQUEST, inferLegacyTypeForNetworkCapabilities(request.networkCapabilities)); 2351 } 2352 2353 /** 2354 * The maximum number of milliseconds the framework will look for a suitable network 2355 * during a timeout-equiped call to {@link requestNetwork}. 2356 * {@hide} 2357 */ 2358 public final static int MAX_NETWORK_REQUEST_TIMEOUT_MS = 100 * 60 * 1000; 2359 2360 /** 2361 * The lookup key for a {@link Network} object included with the intent after 2362 * successfully finding a network for the applications request. Retrieve it with 2363 * {@link android.content.Intent#getParcelableExtra(String)}. 2364 * <p> 2365 * Note that if you intend to invoke {@link Network#openConnection(java.net.URL)} 2366 * then you must get a ConnectivityManager instance before doing so. 2367 */ 2368 public static final String EXTRA_NETWORK = "android.net.extra.NETWORK"; 2369 2370 /** 2371 * The lookup key for a {@link NetworkRequest} object included with the intent after 2372 * successfully finding a network for the applications request. Retrieve it with 2373 * {@link android.content.Intent#getParcelableExtra(String)}. 2374 */ 2375 public static final String EXTRA_NETWORK_REQUEST = "android.net.extra.NETWORK_REQUEST"; 2376 2377 2378 /** 2379 * Request a network to satisfy a set of {@link NetworkCapabilities}. 2380 * 2381 * This function behaves identically to the version that takes a NetworkCallback, but instead 2382 * of {@link NetworkCallback} a {@link PendingIntent} is used. This means 2383 * the request may outlive the calling application and get called back when a suitable 2384 * network is found. 2385 * <p> 2386 * The operation is an Intent broadcast that goes to a broadcast receiver that 2387 * you registered with {@link Context#registerReceiver} or through the 2388 * <receiver> tag in an AndroidManifest.xml file 2389 * <p> 2390 * The operation Intent is delivered with two extras, a {@link Network} typed 2391 * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest} 2392 * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing 2393 * the original requests parameters. It is important to create a new, 2394 * {@link NetworkCallback} based request before completing the processing of the 2395 * Intent to reserve the network or it will be released shortly after the Intent 2396 * is processed. 2397 * <p> 2398 * If there is already an request for this Intent registered (with the equality of 2399 * two Intents defined by {@link Intent#filterEquals}), then it will be removed and 2400 * replaced by this one, effectively releasing the previous {@link NetworkRequest}. 2401 * <p> 2402 * The request may be released normally by calling 2403 * {@link #releaseNetworkRequest(android.app.PendingIntent)}. 2404 * 2405 * @param request {@link NetworkRequest} describing this request. 2406 * @param operation Action to perform when the network is available (corresponds 2407 * to the {@link NetworkCallback#onAvailable} call. Typically 2408 * comes from {@link PendingIntent#getBroadcast}. Cannot be null. 2409 */ 2410 public void requestNetwork(NetworkRequest request, PendingIntent operation) { 2411 checkPendingIntent(operation); 2412 try { 2413 mService.pendingRequestForNetwork(request.networkCapabilities, operation); 2414 } catch (RemoteException e) {} 2415 } 2416 2417 /** 2418 * Removes a request made via {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} 2419 * <p> 2420 * This method has the same behavior as {@link #unregisterNetworkCallback} with respect to 2421 * releasing network resources and disconnecting. 2422 * 2423 * @param operation A PendingIntent equal (as defined by {@link Intent#filterEquals}) to the 2424 * PendingIntent passed to 2425 * {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} with the 2426 * corresponding NetworkRequest you'd like to remove. Cannot be null. 2427 */ 2428 public void releaseNetworkRequest(PendingIntent operation) { 2429 checkPendingIntent(operation); 2430 try { 2431 mService.releasePendingNetworkRequest(operation); 2432 } catch (RemoteException e) {} 2433 } 2434 2435 private void checkPendingIntent(PendingIntent intent) { 2436 if (intent == null) { 2437 throw new IllegalArgumentException("PendingIntent cannot be null."); 2438 } 2439 } 2440 2441 /** 2442 * Registers to receive notifications about all networks which satisfy the given 2443 * {@link NetworkRequest}. The callbacks will continue to be called until 2444 * either the application exits or {@link #unregisterNetworkCallback} is called 2445 * 2446 * @param request {@link NetworkRequest} describing this request. 2447 * @param networkCallback The {@link NetworkCallback} that the system will call as suitable 2448 * networks change state. 2449 */ 2450 public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) { 2451 sendRequestForNetwork(request.networkCapabilities, networkCallback, 0, LISTEN, TYPE_NONE); 2452 } 2453 2454 /** 2455 * Requests bandwidth update for a given {@link Network} and returns whether the update request 2456 * is accepted by ConnectivityService. Once accepted, ConnectivityService will poll underlying 2457 * network connection for updated bandwidth information. The caller will be notified via 2458 * {@link ConnectivityManager.NetworkCallback} if there is an update. Notice that this 2459 * method assumes that the caller has previously called {@link #registerNetworkCallback} to 2460 * listen for network changes. 2461 * 2462 * @param network{@link Network} specifying which network you're interested. 2463 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2464 * 2465 * @hide 2466 */ 2467 public boolean requestBandwidthUpdate(Network network) { 2468 try { 2469 return mService.requestBandwidthUpdate(network); 2470 } catch (RemoteException e) { 2471 return false; 2472 } 2473 } 2474 2475 /** 2476 * Unregisters callbacks about and possibly releases networks originating from 2477 * {@link #requestNetwork} and {@link #registerNetworkCallback} calls. If the 2478 * given {@code NetworkCallback} had previously been used with {@code #requestNetwork}, 2479 * any networks that had been connected to only to satisfy that request will be 2480 * disconnected. 2481 * 2482 * @param networkCallback The {@link NetworkCallback} used when making the request. 2483 */ 2484 public void unregisterNetworkCallback(NetworkCallback networkCallback) { 2485 if (networkCallback == null || networkCallback.networkRequest == null || 2486 networkCallback.networkRequest.requestId == REQUEST_ID_UNSET) { 2487 throw new IllegalArgumentException("Invalid NetworkCallback"); 2488 } 2489 try { 2490 mService.releaseNetworkRequest(networkCallback.networkRequest); 2491 } catch (RemoteException e) {} 2492 } 2493 2494 /** 2495 * Informs the system whether it should switch to {@code network} regardless of whether it is 2496 * validated or not. If {@code accept} is true, and the network was explicitly selected by the 2497 * user (e.g., by selecting a Wi-Fi network in the Settings app), then the network will become 2498 * the system default network regardless of any other network that's currently connected. If 2499 * {@code always} is true, then the choice is remembered, so that the next time the user 2500 * connects to this network, the system will switch to it. 2501 * 2502 * <p>This method requires the caller to hold the permission 2503 * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL} 2504 * 2505 * @param network The network to accept. 2506 * @param accept Whether to accept the network even if unvalidated. 2507 * @param always Whether to remember this choice in the future. 2508 * 2509 * @hide 2510 */ 2511 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2512 try { 2513 mService.setAcceptUnvalidated(network, accept, always); 2514 } catch (RemoteException e) {} 2515 } 2516 2517 /** 2518 * Resets all connectivity manager settings back to factory defaults. 2519 * @hide 2520 */ 2521 public void factoryReset() { 2522 // Turn airplane mode off 2523 setAirplaneMode(false); 2524 2525 // Untether 2526 for (String tether : getTetheredIfaces()) { 2527 untether(tether); 2528 } 2529 2530 // Turn VPN off 2531 try { 2532 VpnConfig vpnConfig = mService.getVpnConfig(); 2533 if (vpnConfig != null) { 2534 if (vpnConfig.legacy) { 2535 mService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN); 2536 } else { 2537 // Prevent this app from initiating VPN connections in the future without 2538 // user intervention. 2539 mService.setVpnPackageAuthorization(false); 2540 2541 mService.prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN); 2542 } 2543 } 2544 } catch (RemoteException e) { 2545 // Well, we tried 2546 } 2547 } 2548 2549 /** 2550 * Binds the current process to {@code network}. All Sockets created in the future 2551 * (and not explicitly bound via a bound SocketFactory from 2552 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 2553 * {@code network}. All host name resolutions will be limited to {@code network} as well. 2554 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 2555 * work and all host name resolutions will fail. This is by design so an application doesn't 2556 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 2557 * To clear binding pass {@code null} for {@code network}. Using individually bound 2558 * Sockets created by Network.getSocketFactory().createSocket() and 2559 * performing network-specific host name resolutions via 2560 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 2561 * {@code bindProcessToNetwork}. 2562 * 2563 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 2564 * the current binding. 2565 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2566 */ 2567 public boolean bindProcessToNetwork(Network network) { 2568 // Forcing callers to call thru non-static function ensures ConnectivityManager 2569 // instantiated. 2570 return setProcessDefaultNetwork(network); 2571 } 2572 2573 /** 2574 * Binds the current process to {@code network}. All Sockets created in the future 2575 * (and not explicitly bound via a bound SocketFactory from 2576 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 2577 * {@code network}. All host name resolutions will be limited to {@code network} as well. 2578 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 2579 * work and all host name resolutions will fail. This is by design so an application doesn't 2580 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 2581 * To clear binding pass {@code null} for {@code network}. Using individually bound 2582 * Sockets created by Network.getSocketFactory().createSocket() and 2583 * performing network-specific host name resolutions via 2584 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 2585 * {@code setProcessDefaultNetwork}. 2586 * 2587 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 2588 * the current binding. 2589 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2590 * @deprecated This function can throw {@link IllegalStateException}. Use 2591 * {@link #bindProcessToNetwork} instead. {@code bindProcessToNetwork} 2592 * is a direct replacement. 2593 */ 2594 public static boolean setProcessDefaultNetwork(Network network) { 2595 int netId = (network == null) ? NETID_UNSET : network.netId; 2596 if (netId == NetworkUtils.getBoundNetworkForProcess()) { 2597 return true; 2598 } 2599 if (NetworkUtils.bindProcessToNetwork(netId)) { 2600 // Set HTTP proxy system properties to match network. 2601 // TODO: Deprecate this static method and replace it with a non-static version. 2602 Proxy.setHttpProxySystemProperty(getInstance().getDefaultProxy()); 2603 // Must flush DNS cache as new network may have different DNS resolutions. 2604 InetAddress.clearDnsCache(); 2605 // Must flush socket pool as idle sockets will be bound to previous network and may 2606 // cause subsequent fetches to be performed on old network. 2607 NetworkEventDispatcher.getInstance().onNetworkConfigurationChanged(); 2608 return true; 2609 } else { 2610 return false; 2611 } 2612 } 2613 2614 /** 2615 * Returns the {@link Network} currently bound to this process via 2616 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 2617 * 2618 * @return {@code Network} to which this process is bound, or {@code null}. 2619 */ 2620 public Network getBoundNetworkForProcess() { 2621 // Forcing callers to call thru non-static function ensures ConnectivityManager 2622 // instantiated. 2623 return getProcessDefaultNetwork(); 2624 } 2625 2626 /** 2627 * Returns the {@link Network} currently bound to this process via 2628 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 2629 * 2630 * @return {@code Network} to which this process is bound, or {@code null}. 2631 * @deprecated Using this function can lead to other functions throwing 2632 * {@link IllegalStateException}. Use {@link #getBoundNetworkForProcess} instead. 2633 * {@code getBoundNetworkForProcess} is a direct replacement. 2634 */ 2635 public static Network getProcessDefaultNetwork() { 2636 int netId = NetworkUtils.getBoundNetworkForProcess(); 2637 if (netId == NETID_UNSET) return null; 2638 return new Network(netId); 2639 } 2640 2641 /** 2642 * Binds host resolutions performed by this process to {@code network}. 2643 * {@link #bindProcessToNetwork} takes precedence over this setting. 2644 * 2645 * @param network The {@link Network} to bind host resolutions from the current process to, or 2646 * {@code null} to clear the current binding. 2647 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 2648 * @hide 2649 * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}. 2650 */ 2651 public static boolean setProcessDefaultNetworkForHostResolution(Network network) { 2652 return NetworkUtils.bindProcessToNetworkForHostResolution( 2653 network == null ? NETID_UNSET : network.netId); 2654 } 2655} 2656