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

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

@@ -250,6 +250,7 @@ public class Snark
   private String rootDataDir = ".";
   private final CompleteListener completeListener;
   private boolean stopped;
+  private boolean starting;
   private byte[] id;
   private byte[] infoHash;
   private String additionalTrackerURL;
@@ -509,9 +510,19 @@ public class Snark
   }
 
   /**
-   * Start up contacting peers and querying the tracker
+   * Start up contacting peers and querying the tracker.
+   * Blocks if tunnel is not yet open.
    */
-  public void startTorrent() {
+  public synchronized void startTorrent() {
+      starting = true;
+      try {
+          x_startTorrent();
+      } finally {
+          starting = false;
+      }
+  }
+
+  private void x_startTorrent() {
     boolean ok = _util.connect();
     if (!ok) fatal("Unable to connect to I2P");
     if (coordinator == null) {
@@ -585,7 +596,7 @@ public class Snark
    * @param fast if true, limit the life of the unannounce threads
    * @since 0.9.1
    */
-  public void stopTorrent(boolean fast) {
+  public synchronized void stopTorrent(boolean fast) {
     stopped = true;
     TrackerClient tc = trackerclient;
     if (tc != null)
@@ -680,6 +691,22 @@ public class Snark
         return stopped;
     }
 
+    /**
+     *  Startup in progress.
+     *  @since 0.9.1
+     */
+    public boolean isStarting() {
+        return starting && stopped;
+    }
+
+    /**
+     *  Set startup in progress.
+     *  @since 0.9.1
+     */
+    public void setStarting() {
+        starting = true;
+    }
+
     /**
      *  @since 0.8.4
      */