src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
@@ -200,6 +200,7 @@ } public Request createSubscribeRequest(Device device, String content, SIPRequest requestOld, Integer expires, String event, CallIdHeader callIdHeader) throws ParseException, InvalidArgumentException, PeerUnavailableException { expires = 100; Request request = null; // sipuri SipURI requestURI = sipFactory.createAddressFactory().createSipURI(device.getDeviceId(), device.getHostAddress());