修复回放、停止预览bug，增加ZLM hook监听，长时间无人观看，停止摄像头推流。需开启ZLM的hook并配置url

songww

2020-05-14 805fa42a2c010d92b1c8fc29a60d32fd99fb4ea3

 src/main/java/com/genersoft/iot/vmp/gb28181/transmit/request/impl/AckRequestProcessor.java

@@ -31,7 +31,7 @@
    * @param config    

    */  

   @Override

   public void process(RequestEvent evt, SipLayer layer, ServerTransaction transaction) {

   public void process(RequestEvent evt, SipLayer layer) {

      Request request = evt.getRequest();

      Dialog dialog = evt.getDialog();

      try {