WifiAutoJoinController.java revision f22d23092ab37286a5ef9d257d5bb32c421d2669
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 2f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Copyright (C) 2010 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 22f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 23f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiConfiguration; 24f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.ScanResult; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiManager; 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiParser; 27f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 28f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 31f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Date; 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiTrafficPoller mWifiTrafficPoller; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 53f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean DBG = true; 56f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean VDBG = false; 57f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 58f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 59f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 65f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiTrafficPoller t, WifiNative n) { 66f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 67f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 68f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 69f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiTrafficPoller = t; 70f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 71f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 72f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager = (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 73f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 74f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 75f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle else 76f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NOT NULL" + " service " + Context.NETWORK_SCORE_SERVICE); 77f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 78f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 79f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // NETwork SCORE SERVICE doesnt seem to be working, so do nothing for now 80f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = new WifiNetworkScoreCache(); 81f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 82f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 83f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 84f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 85f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 86f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 87f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 88f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 89f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 90f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int mScanResultMaximumAge = 30000; /* milliseconds unit */ 91f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 92f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* flush out scan results older than mScanResultMaximumAge */ 93f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 94f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 95f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle delay = mScanResultMaximumAge; //something sane 96f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 97f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 98f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long milli = now.getTime(); 99f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 104f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 105f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 110f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 111f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* Check if this network is known to kepler and return its score */ 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private int isScoredNetwork(ScanResult result) { 117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache == null) 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return mNetworkScoreCache.getNetworkScore(result); 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 122f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void addToScanCache(List<ScanResult> scanList) { 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration associatedConfig; 125f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 127f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 128f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // if there was a previous cache result for this BSSID, average the RSSI values 132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int previous_rssi = sr.level; 134f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long previously_seen_milli = sr.seen; 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* average RSSI with previously seen instances of this scan result */ 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int avg_rssi = result.level; 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((previously_seen_milli > 0) 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (previously_seen_milli < mScanResultMaximumAge/2)) { 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 0 => RSSI = 0.5 * previous_seen_rssi + 0.5 * new_rssi 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If previously_seen_milli is 15+ seconds old: 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 15000 => RSSI = new_rssi 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle double alpha = 0.5 - (double)previously_seen_milli 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle / (double)mScanResultMaximumAge; 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle avg_rssi = (int)((double)avg_rssi * (1-alpha) + (double)previous_rssi * alpha); 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.level = avg_rssi; 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //remove the previous Scan Result 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.put(result.BSSID, new ScanResult(result)); 164f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult srn = scanResultCache.get(result.BSSID); 166f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //add this BSSID to the scanResultCache of the relevant WifiConfiguration 168f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.updateSavedNetworkHistory(result); 169f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 170f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //try to associate this BSSID to an existing Saved Wificonfiguration 171f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig == null) { 172f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 173f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig != null) { 174f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 175f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 176f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + associatedConfig.SSID + " with " + associatedConfig.SSID); 177f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 178f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiManager.SAVE_NETWORK, associatedConfig); 179f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 180f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 181f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 182f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 183f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 184f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 185f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 186f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String ts = String.format("[%,d us] ", now/1000); 187f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Log.e(TAG, ts + message + " stack:" 188f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() +" - " 189f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() +" - " 190f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() +" - " 191f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 192f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 193f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 194f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 195f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* called directly from WifiStateMachine */ 196f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newSupplicantResults() { 197f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = mWifiStateMachine.syncGetScanResultsList(); 198f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 199f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 200f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) 201f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) ); 202f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 203f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 204f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 205f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 206f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 207f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 208f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 209f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* not used at the moment 210f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 211f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 212f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 213f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 214f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 215f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 216f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 217f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 218f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 219f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 220f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 221f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 222f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 223f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 224f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 225f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* network link quality changed, called directly from WifiTrafficPoller, 226f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle or by listening to Link Quality intent */ 227f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 228f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 229f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 230f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 232f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 233f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 234f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 235f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 236f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ***/ 237f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private int compareNetwork(WifiConfiguration candidate) { 238f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 239f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (currentNetwork == null) 240f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1000; 241f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 242f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 243f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; 244f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 245f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 246f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(currentNetwork, candidate); 247f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 249f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending: currentNetwork < candidate 250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 10; //will try switch over to the candidate 251f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 252f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 253f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle public void updateSavedConfigurationsPriorities(int netId) { 259f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 261f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 262f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 263f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // reenable autojoin for this network, 266f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // since the user want to connect to this configuration 267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle selected.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 271f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("updateSavedConfigurationsPriorities will update " 272f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(selected.connectChoices.size())); 274f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("updateSavedConfigurationsPriorities will update " 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId)); 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 278f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 279f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 280f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<WifiConfiguration> networks = mWifiConfigStore.getRecentConfiguredNetworks(12000, true); 281f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (networks == null) 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 283f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 284f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config: networks) { 285f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 286f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) 287f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("updateSavedConfigurationsPriorities got " + config.SSID); 288f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 289f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 290f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 291f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 292f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we were preferred over a recently seen config 294f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices == null) { 295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle selected.connectChoices = new HashMap<String, Integer>(); 296f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 297f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi = WifiConfiguration.INVALID_RSSI; 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.visibility != null) { 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi = config.visibility.rssi5; 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.visibility.rssi24 > rssi) 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi = config.visibility.rssi24; 303f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (rssi < -80) { 305f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 306f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 307f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 308f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //remember the user's choice: 309f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //add the recently seen config to the selected's choice 310f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("updateSavedConfigurationsPriorities add a choice " + selected.configKey(true) 311f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + config.configKey(true) + " RSSI " + Integer.toString(rssi)); 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle selected.connectChoices.put(config.configKey(true), rssi); 313f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 314f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) 316f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("updateSavedConfigurationsPriorities try to remove " 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //remove the selected from the recently seen config's array 320f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle config.connectChoices.remove(selected.configKey(true)); 321f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle printChoices(config); 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 324f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 325f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 326f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("updateSavedConfigurationsPriorities " + Integer.toString(netId) 327f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 328f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 329f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 330f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 331f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 332f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 333f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void printChoices(WifiConfiguration config) { 334f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int num = 0; 335f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 336f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle num = config.connectChoices.size(); 337f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 339f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("printChoices " + config.SSID + " num choices: " + Integer.toString(num)); 340f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : config.connectChoices.keySet()) { 342f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(" " + key); 343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 344f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 345f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 346f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 347f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 348f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean hasConnectChoice(WifiConfiguration source, WifiConfiguration target) { 349f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean found = false; 350f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source == null) 351f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 352f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (target == null) 353f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 354f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 355f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.connectChoices != null) { 356f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ( source.connectChoices.get(target.configKey(true)) != null) { 357f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 358f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 359f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 360f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 361f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.linkedConfigurations != null) { 362f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 363f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 364f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 365f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 366f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices.get(target.configKey(true)) != null) { 367f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 368f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 369f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 370f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 371f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 372f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 373f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return found; 374f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 375f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 376f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b) { 377f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 378f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 379f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 380f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 381f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 382f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 383f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //error 384f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 385f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 386f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 387f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 == -127) 388f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((astatus.rssi5+boost5) > (bstatus.rssi24))) { 389f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 390f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 391f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 392f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 == -127) 393f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((bstatus.rssi5+boost5) > (bstatus.rssi24))) { 394f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 395f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 396f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 397f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 398f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 399f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 400f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 401f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 403f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 404f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 405f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 406f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null)) { 407f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((a.linkedConfigurations.get(b.configKey(true))!= null) 408f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (b.linkedConfigurations.get(a.configKey(true))!= null)) { 409f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 410f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 411f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 414f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " + b.SSID 416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + a.SSID); 417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1; //b is of higher priority - ascending 419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " +a.SSID 423f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + b.SSID); 424f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 425f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; //a is of higher priority - descending 426f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 427f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 428f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 429f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (linked) { 430f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // then we try prefer 5GHz, and try to ignore user's choice 431f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 432f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 433f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 434f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //error 435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 436f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 437f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 438f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 439f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 440f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations linked: " + Integer.toString(astatus.rssi5) 441f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + "," + Integer.toString(astatus.rssi24) + " " 442f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + "," 443f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi24)); 444f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 445f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 446f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 == -127) 447f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((astatus.rssi5+boost5) > (bstatus.rssi24))) { 448f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 449f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 450f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -10; 451f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 452f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 453f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations linked and prefers " + a.SSID 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + b.SSID 455f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " due to 5GHz RSSI " + Integer.toString(astatus.rssi5) 456f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over: 5=" + Integer.toString(bstatus.rssi5) 457f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + ", 2.4=" + Integer.toString(bstatus.rssi5)); 458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 459f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 == -127) 460f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((bstatus.rssi5+boost5) > (bstatus.rssi24))) { 461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 462f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 463f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 464f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations linked and prefers " + b.SSID 465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + a.SSID + " due to 5GHz RSSI " 466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(astatus.rssi5) + " over: 5=" 467f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + ", 2.4=" 468f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5)); 469f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 470f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 10; 471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 472f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 473f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //assuming that the WifiConfiguration aren't part of the same "extended roam domain", 474f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //then compare by user's choice. 475f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(a, b)) { 476f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 477f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order -2; 478f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 479f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations prefers -2 " + a.SSID 480f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over " + b.SSID + " due to user choice order -> " + Integer.toString(order)); 481f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 482f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 483f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(b, a)) { 485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 486f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order + 2; 487f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 488f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations prefers +2 " + b.SSID + " over " 489f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + a.SSID + " due to user choice order ->" + Integer.toString(order)); 490f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 491f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 492f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 493f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 494f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we don't know anything - pick the last seen i.e. K behavior 495f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we should do this only for recently picked configurations 496f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 497f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 498f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 499f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations prefers -1 " + a.SSID + " over " 500f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + b.SSID + " due to priority"); 501f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 502f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 503f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 504f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 505f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 506f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 507f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.SSID + " over " 508f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + a.SSID + " due to priority"); 509f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 510f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 511f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 512f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 513f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //maybe just look at RSSI or band 514f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 515f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.SSID + " over " 516f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + a.SSID + " due to nothing"); 517f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 518f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 519f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = compareWifiConfigurationsRSSI(a, b); //compare RSSI 520f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 521f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 522f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 523f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 524f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) 525f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 526f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order < 0) 527f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 528f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 529f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 530f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations Done: " + a.SSID + sorder 531f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + b.SSID + " order " + Integer.toString(order)); 532f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 533f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 534f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 535f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* attemptAutoJoin function implement the core of the a network switching algorithm */ 538f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 539f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 540f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 541f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* obtain the subset of recently seen networks */ 542f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, true); 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 544f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("attemptAutoJoin nothing"); 545f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 546f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 547f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 548f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* find the currently connected network: ask the supplicant directly */ 549f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String val = mWifiNative.status(); 550f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 551f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 553f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 555f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 556f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int currentNetId = -1; 557f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 558f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId = 0; 561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 562f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 563f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 564f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 565f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId *= 10; 566f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId += c - 0x30; 567f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 568f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 569f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 570f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 571f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 572f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 573f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 574f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 575f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " ---> currentId=" + Integer.toString(currentNetId)); 576f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 577f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* select Best Network candidate from known WifiConfigurations */ 578f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 579f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((config.status == WifiConfiguration.Status.DISABLED) 580f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE)) { 581f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin skip candidate due to auth failure " 582f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + config.SSID + " key " + config.configKey(true)); 583f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 584f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 585f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.autoJoinStatus != WifiConfiguration.AUTO_JOIN_ENABLED) { 586f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 587f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(config.autoJoinStatus) + " " + config.SSID + " key " 588f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + config.configKey(true)); 589f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 590f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 591f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 592f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 593f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin skip current candidate " + Integer.toString(currentNetId) 594f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " key " + config.configKey(true)); 595f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 596f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 597f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 598f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) logDbg("attemptAutoJoin trying candidate id=" + config.networkId + " " 599f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + config.SSID + " key " + config.configKey(true)); 600f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 601f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 602f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 603f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 604f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 605f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.SSID 606f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " with " + config.SSID + " key " + config.configKey(true)); 607f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 608f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 609f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(candidate, config); 610f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 611f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 612f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin did compare candidate " + Integer.toString(order)); 613f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 614f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 615f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 616f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending : candidate < config 617f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 618f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 619f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 621f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 622f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* now, go thru scan result to try finding a better Herrevad network */ 623f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 624f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 625f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 626f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 627f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 628f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 629f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 630f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 631f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 632f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //get current date 633f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 634f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now_ms = now.getTime(); 635f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 636f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (rssi5 < -60 && rssi24 < -70) { 637f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 638f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((now_ms - result.seen) < 3000) { 639f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 640f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (score > 0) { 641f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // try any arbitrary formula for now, adding apple and oranges, 642f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // i.e. adding network score and "dBm over noise" 643f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (result.frequency < 4000) { 644f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi24 -40)) { 645f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 646f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 647f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 648f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 649f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 650f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 651f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 652f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 653f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 654f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 655f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi5 -30)) { 656f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 657f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 658f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 659f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 660f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 661f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 662f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 663f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 664f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 665f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 666f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 667f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 668f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 669f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 670f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 671f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 672f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 673f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* if candidate is found, check the state of the connection so as 674f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle to decide if we should be acting on this candidate and switching over */ 675f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 676f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin did find candidate " + candidate.SSID 677f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " key " + candidate.configKey(true)); 678f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 679f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 680f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int networkDelta = compareNetwork(candidate); 681f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (networkDelta > 0) 682f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin did find candidate " + candidate.SSID 683f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " for delta " + Integer.toString(networkDelta)); 684f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* ASK traffic poller permission to switch: 686f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for instance, 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if user is currently streaming voice traffic, 688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle then don’t switch regardless of the delta */ 689f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mWifiTrafficPoller.shouldSwitchNetwork(networkDelta)) { 691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mStaStaSupported) { 692f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 693f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 694f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 695f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("AutoJoin auto connect to netId " 696f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(candidate.networkId) 697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " SSID " + candidate.SSID); 698f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 699f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 700f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 701f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.networkId); 702f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.enableNetworkWithoutBroadcast(candidate.networkId, true); 703f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 704f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we would do the below only if we want to persist the new choice 705f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.selectNetwork(candidate.networkId); 706f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 707f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 708f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 709f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 710f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("Done attemptAutoJoin"); 711f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 712f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 713f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 714