Networkstack - let OS decide IPv4 or IPv6

src/main/java/eu/siacs/conversations/persistance/DatabaseBackend.java

@@ -156,7 +156,6 @@ public class DatabaseBackend extends SQLiteOpenHelper {
     private static String CREATE_RESOLVER_RESULTS_TABLE = "create table " + RESOLVER_RESULTS_TABLENAME + "("
             + Resolver.Result.DOMAIN + " TEXT,"
             + Resolver.Result.HOSTNAME + " TEXT,"
-            + Resolver.Result.IP + " BLOB,"
             + Resolver.Result.PRIORITY + " NUMBER,"
             + Resolver.Result.DIRECT_TLS + " NUMBER,"
             + Resolver.Result.AUTHENTICATED + " NUMBER,"

src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java

@@ -314,18 +314,10 @@ public class XmppConnection implements Runnable {
                         features.encryptionEnabled = result.isDirectTls();
                         verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
                         Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
-                        final InetSocketAddress addr;
-                        if (result.getIp() != null) {
-                            addr = new InetSocketAddress(result.getIp(), result.getPort());
-                            Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
-                                    + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
-                                    + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
-                        } else {
-                            addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
-                            Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
-                                    + ": using values from resolver "
-                                    + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
-                        }
+                        final InetSocketAddress addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
+                        Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
+                                + ": using values from resolver "
+                                + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
 
                         if (!features.encryptionEnabled) {
                             localSocket = new Socket();