// If both define a subtopic, they must match.
if (subtopic != null && csub != null)
{
String subtopicSeparator = destination.getServerSettings().getSubtopicSeparator();
Subtopic consumerSubtopic = new Subtopic(csub, subtopicSeparator);
Subtopic messageSubtopic = new Subtopic(subtopic, subtopicSeparator);
if (!consumerSubtopic.matches(messageSubtopic))
continue; // Not a match.
}
if (csel == null)