- Thread task to open tunnel and improve UI feedback while open is pending

apps/i2psnark/java/src/org/klomp/snark/I2PSnarkUtil.java

@@ -55,8 +55,9 @@ public class I2PSnarkUtil {
     private String _i2cpHost;
     private int _i2cpPort;
     private final Map<String, String> _opts;
-    private I2PSocketManager _manager;
+    private volatile I2PSocketManager _manager;
     private boolean _configured;
+    private volatile boolean _connecting;
     private final Set<Hash> _shitlist;
     private int _maxUploaders;
     private int _maxUpBW;
@@ -198,6 +199,7 @@ public class I2PSnarkUtil {
      */
     synchronized public boolean connect() {
         if (_manager == null) {
+            _connecting = true;
             // try to find why reconnecting after stop
             if (_log.shouldLog(Log.DEBUG))
                 _log.debug("Connecting to I2P", new Exception("I did it"));
@@ -237,6 +239,7 @@ public class I2PSnarkUtil {
             if (opts.getProperty("i2p.streaming.maxConnsPerHour") == null)
                 opts.setProperty("i2p.streaming.maxConnsPerHour", "20");
             _manager = I2PSocketManagerFactory.createManager(_i2cpHost, _i2cpPort, opts);
+            _connecting = false;
         }
         // FIXME this only instantiates krpc once, left stuck with old manager
         //if (ENABLE_DHT && _manager != null && _dht == null)
@@ -252,6 +255,9 @@ public class I2PSnarkUtil {
 
     public boolean connected() { return _manager != null; }
 
+    /** @since 0.9.1 */
+    public boolean isConnecting() { return _manager == null && _connecting; }
+
     /**
      *  For FetchAndAdd
      *  @return null if not connected