diff options
| -rw-r--r-- | src/main/java/eu/siacs/conversations/utils/DNSHelper.java | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java index 87790d64d..306d50c29 100644 --- a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java +++ b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java @@ -5,6 +5,7 @@ import android.content.Context; import android.net.ConnectivityManager; import android.net.LinkProperties; import android.net.Network; +import android.net.RouteInfo; import android.os.Build; import android.os.Bundle; import android.os.Parcelable; @@ -75,15 +76,29 @@ public class DNSHelper { for(int i = 0; i < networks.length; ++i) { LinkProperties linkProperties = connectivityManager.getLinkProperties(networks[i]); if (linkProperties != null) { - servers.addAll(linkProperties.getDnsServers()); + if (hasDefaultRoute(linkProperties)) { + servers.addAll(0, linkProperties.getDnsServers()); + } else { + servers.addAll(linkProperties.getDnsServers()); + } } } if (servers.size() > 0) { - Log.d(Config.LOGTAG,"used lollipop variant to discover dns servers in "+networks.length+" networks"); + Log.d(Config.LOGTAG, "used lollipop variant to discover dns servers in " + networks.length + " networks"); } return servers.size() > 0 ? servers : getDnsServersPreLollipop(); } + @TargetApi(Build.VERSION_CODES.LOLLIPOP) + private static boolean hasDefaultRoute(LinkProperties linkProperties) { + for(RouteInfo route: linkProperties.getRoutes()) { + if (route.isDefaultRoute()) { + return true; + } + } + return false; + } + private static List<InetAddress> getDnsServersPreLollipop() { List<InetAddress> servers = new ArrayList<>(); String[] dns = client.findDNS(); |