code: public void close() {
          if (tc.isEntryEnabled())
              SibTr.entry(this, tc, "close");
  
          // begin F177053
          ChannelFramework framework = ChannelFrameworkFactory.getChannelFramework(); // F196678.10
          try {
              framework.stopChain(chainInbound, CHAIN_STOP_TIME);
          } catch (ChainException e) {
              FFDCFilter.processException(e, "com.ibm.ws.sib.jfapchannel.impl.ListenerPortImpl.close",
                                          JFapChannelConstants.LISTENERPORTIMPL_CLOSE_01,
                                          new Object[] { framework, chainInbound }); // D232185
              if (tc.isEventEnabled())
                  SibTr.exception(this, tc, e);
          } catch (ChannelException e) {
              FFDCFilter.processException(e, "com.ibm.ws.sib.jfapchannel.impl.ListenerPortImpl.close",
                                          JFapChannelConstants.LISTENERPORTIMPL_CLOSE_02,
                                          new Object[] { framework, chainInbound }); // D232185
              if (tc.isEventEnabled())
                  SibTr.exception(this, tc, e);
          }
          // end F177053
  
          if (tc.isEntryEnabled())
              SibTr.exit(this, tc, "close");
      }
docs: Stops the listener port listening.
  
  @see ListenerPort#close()