优化端口预占用，防止占用无法释放

648540858

2023-06-28 a77628e8759901abc3219412fc2c4aced940db28

 src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/CancelResponseProcessor.java

@@ -17,7 +17,7 @@
@Component
public class CancelResponseProcessor extends SIPResponseProcessorAbstract {

   private String method = "CANCEL";
   private final String method = "CANCEL";

   @Autowired
   private SipLayer sipLayer;