;;
;; Licensed to the Apache Software Foundation (ASF) under one
;; or more contributor license agreements.  See the NOTICE file
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;; regarding copyright ownership.  The ASF licenses this file
;; to you under the Apache License, Version 2.0 (the
;; "License"); you may not use this file except in compliance
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;; 
;;   http://www.apache.org/licenses/LICENSE-2.0
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  +----------+          +----------+          +----------+
  |QDR.A     |          |QDR.B     |          |QDR.C     |
  |port:     |          |port:     |          |port:     |
  | 20001    |--------->| 20002    |--------->| 20003    |
  |          |          |          |          |          |
  |          |          |          |          |          |
  +----------+          +----------+          +----------+

 * The direction of the arrow shows the direction of the connection setup
   Connector --> Listener