Examples with ScanResult android.net.wifi.ScanResult used on opensource projects

Example 51 with ScanResult

use of android.net.wifi.ScanResult in project platform_frameworks_base by android.

the class WifiStressTest method testWifiScanning.

/**
     *  Stress Wifi Scanning
     *  TODO: test the scanning quality for each frequency band
     */
@LargeTest
public void testWifiScanning() {
    long scanTimeSum = 0, i, averageScanTime = -1;
    // count times of given ssid appear in scan results.
    int ssidAppearInScanResultsCount = 0;
    for (i = 1; i <= mScanIterations; i++) {
        logv("testWifiScanning: iteration: " + i);
        averageScanTime = scanTimeSum / i;
        writeOutput(String.format("iteration %d out of %d", i, mScanIterations));
        writeOutput(String.format("average scanning time is %d", averageScanTime));
        writeOutput(String.format("ssid appear %d out of %d scan iterations", ssidAppearInScanResultsCount, i));
        List<ScanResult> scanResultLocal = null;
        // wait for a scan result
        long start = 0;
        synchronized (mWifiScanResultLock) {
            start = SystemClock.uptimeMillis();
            assertTrue("start scan failed", mWifiManager.startScan());
            try {
                mWifiScanResultLock.wait(WAIT_FOR_SCAN_RESULT);
            } catch (InterruptedException e) {
            // ignore
            }
            scanTimeSum += SystemClock.uptimeMillis() - start;
            // save the scan result while in lock
            scanResultLocal = mLastScanResult;
        }
        if (scanResultLocal == null || scanResultLocal.isEmpty()) {
            fail("Scan results are empty ");
        }
        logv("size of scan result list: " + scanResultLocal.size());
        for (ScanResult sr : scanResultLocal) {
            logv(String.format("scan result: " + sr.toString()));
            if (mSsid.equals(sr.SSID)) {
                ssidAppearInScanResultsCount += 1;
                break;
            }
        }
    }
    Bundle result = new Bundle();
    result.putLong("actual-iterations", i - 1);
    result.putLong("avg-scan-time", averageScanTime);
    result.putInt("ap-discovered", ssidAppearInScanResultsCount);
    getInstrumentation().sendStatus(Activity.RESULT_FIRST_USER, result);
    if (i == mScanIterations + 1) {
        writeOutput(String.format("iteration %d out of %d", i - 1, mScanIterations));
        writeOutput(String.format("average scanning time is %d", scanTimeSum / (i - 1)));
        writeOutput(String.format("ssid appear %d out of %d scan iterations", ssidAppearInScanResultsCount, i - 1));
    }
}

Example 52 with ScanResult

use of android.net.wifi.ScanResult in project platform_frameworks_base by android.

the class RecommendationRequestTest method setUp.

@Override
public void setUp() throws Exception {
    mScanResults = new ScanResult[2];
    mScanResults[0] = new ScanResult();
    mScanResults[1] = new ScanResult("ssid", "bssid", 0L, /*hessid*/
    1, /*anqpDominId*/
    "caps", 2, /*level*/
    3, /*frequency*/
    4L, /*tsf*/
    5, /*distCm*/
    6, /*distSdCm*/
    7, /*channelWidth*/
    8, /*centerFreq0*/
    9, /*centerFreq1*/
    false);
    mDefaultConfig = new WifiConfiguration();
    mDefaultConfig.SSID = "default_config";
    mConnectedConfig = new WifiConfiguration();
    mConnectedConfig.SSID = "connected_config";
    mConnectableConfigs = new WifiConfiguration[] { mDefaultConfig, mConnectedConfig };
    mLastSelectedNetworkId = 5;
    mLastSelectedNetworkTimestamp = SystemClock.elapsedRealtime();
}

Example 53 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by AOSPA.

the class ConnectionUtil method connectToWifiWithConfiguration.

/**
     * Connect to Wi-Fi with the given configuration.
     * @param config
     * @return true if we are connected to a given AP.
     */
public boolean connectToWifiWithConfiguration(WifiConfiguration config) {
    //  The SSID in the configuration is a pure string, need to convert it to a quoted string.
    String ssid = config.SSID;
    config.SSID = convertToQuotedString(ssid);
    // If wifi is not enabled, enable it
    if (!mWifiManager.isWifiEnabled()) {
        Log.v(LOG_TAG, "Wifi is not enabled, enable it");
        mWifiManager.setWifiEnabled(true);
        // wait for the wifi state change before start scanning.
        if (!waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 2 * SHORT_TIMEOUT)) {
            Log.v(LOG_TAG, "Wait for WIFI_STATE_ENABLED failed");
            return false;
        }
    }
    boolean foundApInScanResults = false;
    for (int retry = 0; retry < 5; retry++) {
        List<ScanResult> netList = mWifiManager.getScanResults();
        if (netList != null) {
            Log.v(LOG_TAG, "size of scan result list: " + netList.size());
            for (int i = 0; i < netList.size(); i++) {
                ScanResult sr = netList.get(i);
                if (sr.SSID.equals(ssid)) {
                    Log.v(LOG_TAG, "Found " + ssid + " in the scan result list.");
                    Log.v(LOG_TAG, "Retry: " + retry);
                    foundApInScanResults = true;
                    mWifiManager.connect(config, new WifiManager.ActionListener() {

                        public void onSuccess() {
                        }

                        public void onFailure(int reason) {
                            Log.e(LOG_TAG, "connect failed " + reason);
                        }
                    });
                    break;
                }
            }
        }
        if (foundApInScanResults) {
            return true;
        } else {
            // Start an active scan
            mWifiManager.startScan();
            mScanResultIsAvailable = false;
            long startTime = System.currentTimeMillis();
            while (!mScanResultIsAvailable) {
                if ((System.currentTimeMillis() - startTime) > WIFI_SCAN_TIMEOUT) {
                    Log.v(LOG_TAG, "wait for scan results timeout");
                    return false;
                }
                // wait for the scan results to be available
                synchronized (this) {
                    // wait for the scan result to be available
                    try {
                        this.wait(WAIT_FOR_SCAN_RESULT);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    if ((mWifiManager.getScanResults() == null) || (mWifiManager.getScanResults().size() <= 0)) {
                        continue;
                    }
                    mScanResultIsAvailable = true;
                }
            }
        }
    }
    return false;
}

Example 54 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by AOSPA.

the class WifiTracker method fetchScanResults.

private Collection<ScanResult> fetchScanResults() {
    mScanId++;
    final List<ScanResult> newResults = mWifiManager.getScanResults();
    for (ScanResult newResult : newResults) {
        if (newResult.SSID == null || newResult.SSID.isEmpty()) {
            continue;
        }
        mScanResultCache.put(newResult.BSSID, newResult);
        mSeenBssids.put(newResult.BSSID, mScanId);
    }
    if (mScanId > NUM_SCANS_TO_CONFIRM_AP_LOSS) {
        if (DBG)
            Log.d(TAG, "------ Dumping SSIDs that were expired on this scan ------");
        Integer threshold = mScanId - NUM_SCANS_TO_CONFIRM_AP_LOSS;
        for (Iterator<Map.Entry<String, Integer>> it = mSeenBssids.entrySet().iterator(); it.hasNext(); ) /* nothing */
        {
            Map.Entry<String, Integer> e = it.next();
            if (e.getValue() < threshold) {
                ScanResult result = mScanResultCache.get(e.getKey());
                if (DBG)
                    Log.d(TAG, "Removing " + e.getKey() + ":(" + result.SSID + ")");
                mScanResultCache.remove(e.getKey());
                it.remove();
            }
        }
        if (DBG)
            Log.d(TAG, "---- Done Dumping SSIDs that were expired on this scan ----");
    }
    return mScanResultCache.values();
}

Example 55 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by AOSPA.

the class WifiTracker method updateAccessPoints.

private void updateAccessPoints() {
    // Swap the current access points into a cached list.
    List<AccessPoint> cachedAccessPoints = getAccessPoints();
    ArrayList<AccessPoint> accessPoints = new ArrayList<>();
    // Clear out the configs so we don't think something is saved when it isn't.
    for (AccessPoint accessPoint : cachedAccessPoints) {
        accessPoint.clearConfig();
    }
    /** Lookup table to more quickly update AccessPoints by only considering objects with the
         * correct SSID.  Maps SSID -> List of AccessPoints with the given SSID.  */
    Multimap<String, AccessPoint> apMap = new Multimap<String, AccessPoint>();
    WifiConfiguration connectionConfig = null;
    if (mLastInfo != null) {
        connectionConfig = getWifiConfigurationForNetworkId(mLastInfo.getNetworkId());
    }
    final Collection<ScanResult> results = fetchScanResults();
    final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
    if (configs != null) {
        mSavedNetworksExist = configs.size() != 0;
        for (WifiConfiguration config : configs) {
            if (config.selfAdded && config.numAssociation == 0) {
                continue;
            }
            AccessPoint accessPoint = getCachedOrCreate(config, cachedAccessPoints);
            if (mLastInfo != null && mLastNetworkInfo != null) {
                if (config.isPasspoint() == false) {
                    accessPoint.update(connectionConfig, mLastInfo, mLastNetworkInfo);
                }
            }
            if (mIncludeSaved) {
                if (!config.isPasspoint() || mIncludePasspoints) {
                    // If saved network not present in scan result then set its Rssi to MAX_VALUE
                    boolean apFound = false;
                    for (ScanResult result : results) {
                        if (accessPoint.matches(result)) {
                            apFound = true;
                            break;
                        }
                    }
                    if (!apFound) {
                        accessPoint.setRssi(Integer.MAX_VALUE);
                    }
                    accessPoints.add(accessPoint);
                }
                if (config.isPasspoint() == false) {
                    apMap.put(accessPoint.getSsidStr(), accessPoint);
                }
            } else {
                // If we aren't using saved networks, drop them into the cache so that
                // we have access to their saved info.
                cachedAccessPoints.add(accessPoint);
            }
        }
    }
    if (results != null) {
        for (ScanResult result : results) {
            // Ignore hidden and ad-hoc networks.
            if (result.SSID == null || result.SSID.length() == 0 || result.capabilities.contains("[IBSS]")) {
                continue;
            }
            boolean found = false;
            for (AccessPoint accessPoint : apMap.getAll(result.SSID)) {
                if (accessPoint.update(result)) {
                    found = true;
                    break;
                }
            }
            if (!found && mIncludeScans) {
                AccessPoint accessPoint = getCachedOrCreate(result, cachedAccessPoints);
                if (mLastInfo != null && mLastNetworkInfo != null) {
                    accessPoint.update(connectionConfig, mLastInfo, mLastNetworkInfo);
                }
                if (result.isPasspointNetwork()) {
                    WifiConfiguration config = mWifiManager.getMatchingWifiConfig(result);
                    if (config != null && config.SSID.equals(result.SSID)) {
                        accessPoint.update(config);
                    }
                }
                if (mLastInfo != null && mLastInfo.getBSSID() != null && mLastInfo.getBSSID().equals(result.BSSID) && connectionConfig != null && connectionConfig.isPasspoint()) {
                    /* This network is connected via this passpoint config */
                    /* SSID match is not going to work for it; so update explicitly */
                    accessPoint.update(connectionConfig);
                }
                accessPoints.add(accessPoint);
                apMap.put(accessPoint.getSsidStr(), accessPoint);
            }
        }
    }
    // Pre-sort accessPoints to speed preference insertion
    Collections.sort(accessPoints);
    // Log accesspoints that were deleted
    if (DBG)
        Log.d(TAG, "------ Dumping SSIDs that were not seen on this scan ------");
    for (AccessPoint prevAccessPoint : mAccessPoints) {
        if (prevAccessPoint.getSsid() == null)
            continue;
        String prevSsid = prevAccessPoint.getSsidStr();
        boolean found = false;
        for (AccessPoint newAccessPoint : accessPoints) {
            if (newAccessPoint.getSsid() != null && newAccessPoint.getSsid().equals(prevSsid)) {
                found = true;
                break;
            }
        }
        if (!found)
            if (DBG)
                Log.d(TAG, "Did not find " + prevSsid + " in this scan");
    }
    if (DBG)
        Log.d(TAG, "---- Done dumping SSIDs that were not seen on this scan ----");
    mAccessPoints = accessPoints;
    mMainHandler.sendEmptyMessage(MainHandler.MSG_ACCESS_POINT_CHANGED);
}