SMACK-412 Added the pingMyServer back in, cleaned up unneeded synchronization and removed minimum ping interval.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/branches/smack_3_3_0@13588 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smack/SmackError.java

@@ -0,0 +1,24 @@
+package org.jivesoftware.smack;
+
+public enum SmackError {
+    NO_RESPONSE_FROM_SERVER("No response from server.");
+    
+    private String message;
+    
+    private SmackError(String errMessage) {
+        message = errMessage;
+    }
+    
+    public String getErrorMessage() {
+        return message;
+    }
+    
+    public static SmackError getErrorCode(String message) {
+        for (SmackError code : values()) {
+            if (code.message.equals(message)) {
+                return code;
+            }
+        }
+        return null;
+    }
+}