Y a-t-il une raison pour laquelle un réseau Wifi configuré sous Android (Lollipop) ne se reconnecte pas automatiquement après une réinitialisation du routeur ? Le réseau est configuré comme suit :
private boolean connectToNetwork(ScanResult scanResult, String password, WifiManager wifiManager)
{
WifiConfiguration wifiConfig = new WifiConfiguration();
String quotedSSID = "\"" + scanResult.SSID + "\"";
wifiConfig.SSID = quotedSSID;
wifiConfig.status = WifiConfiguration.Status.DISABLED;
wifiConfig.priority = 40;
// Dependent on the security type of the selected network
// we set the security settings for the configuration
SecurityType securityType = getSecurityType(scanResult);
if (securityType == SecurityType.Open)
{
// No security
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedAuthAlgorithms.clear();
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
}
else if (securityType == SecurityType.WPA)
{
//WPA/WPA2 Security
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wifiConfig.preSharedKey = "\"".concat(password).concat("\"");
}
else if (securityType == SecurityType.WEP)
{
// WEP Security
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
wifiConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
if (getHexKey(password))
wifiConfig.wepKeys[0] = password;
else
wifiConfig.wepKeys[0] = "\"".concat(password).concat("\"");
wifiConfig.wepTxKeyIndex = 0;
}
// Finally we add the new configuration to the managed list of networks
connectionReceiver = new ConnectionReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(connectionReceiver, intentFilter);
int networkID = wifiManager.addNetwork(wifiConfig);
if (networkID != -1)
{
if(wifiManager.enableNetwork(networkID, true))
{
wifiManager.saveConfiguration();
return true;
}
}
// Connection failed
unregisterReceiver(connectionReceiver);
connectionReceiver = null;
return false;
}
Ce qui fonctionne bien et se connecte au réseau. Le réseau continue à fonctionner correctement jusqu'à ce que j'éteigne le routeur Wifi. Ensuite, après l'avoir rallumé et avoir attendu que le périphérique se reconnecte, j'obtiens des erreurs et ne peux pas accéder à l'Internet. Le code suivant renvoie vrai, donc il semble que le dispositif s'est reconnecté au réseau :
public boolean isNetworkAvailable()
{
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
Le réseau actif dans l'image ci-dessus est le bon réseau Wifi, mais lorsque j'essaie d'accéder à quelque chose, je reçois des erreurs. Par exemple, Chromium donne un tas de :
E/chromium: [ERROR:socket_posix.cc(80)] CreatePlatformSocket() returned an error, errno=64: Machine is not on the network
W/chromium: [WARNING:net_errors_posix.cc(116)] Unknown error 64 mapped to net::ERR_FAILED
Et Volley donne la même chose :
java.net.SocketException: socket failed: errno 64 (Machine is not on the network)