优化sip消息构建，去除ServerTransaction的使用

648540858

2022-10-18 80d2edeef25f752e0a80a6cff99e38f61c2d2cb2

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

@@ -15,7 +15,7 @@
@Component
public class CancelRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {

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

   @Autowired
   private SIPProcessorObserver sipProcessorObserver;