code: protected int getSize()
     {      
        if (tc.isEntryEnabled()) SibTr.entry(this, tc, "getSize");
        if (tc.isEntryEnabled()) SibTr.exit(this, tc, "getSize", ""+size);
        return size;
     }
docs: Returns the size of the payload data the user requested tranmitted.
  @return Returns the size of the payload data the user requested tranmitted.