1 files changed, 3 insertions, 2 deletions
diff --git a/src/IvyClient.java b/src/IvyClient.java
index 5e71ccb..b0c1200 100755
--- a/src/IvyClient.java
+++ b/src/IvyClient.java
@@ -103,6 +103,7 @@ public class IvyClient implements Runnable {
   final static char newLineChar = '\n';
 
   // private variables
+  private static int pingSerial = 0;
   private static Integer csMutex=new Integer(0);
   private static int clientSerial=0;	/* an unique ID for each IvyClient */
   private Stack PCHStack = new Stack();
@@ -246,7 +247,7 @@ public class IvyClient implements Runnable {
    */
   public void ping(PingCallback pc) throws IvyException {
     PCHStack.push(new PingCallbackHolder(pc));
-    sendString(Ping,0,"");
+    sendString(Ping,pingSerial++,"");
   }
 
   ///////////////////////////////////////////////////
@@ -490,7 +491,7 @@ public class IvyClient implements Runnable {
         ((PingCallbackHolder)PCHStack.pop()).run();
 	break;
       case Ping:
-	sendString(Pong,0,"");
+	sendString(Pong,msgId.intValue(),"");
 	break;
       case AddRegexp:
 	String regexp=s.substring(from,b.length);