Pre Merge pull request !42 from 樊冲/fix-bug-fanchong

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/SIPSender.java

@@ -143,7 +143,7 @@ public class SIPSender {
 
     public CallIdHeader getNewCallIdHeader(String ip, String transport) {
         if (ObjectUtils.isEmpty(transport)) {
-            return sipLayer.getUdpSipProvider() != null ? sipLayer.getUdpSipProvider().getNewCallId() : sipLayer.getTcpSipProvider().getNewCallId();
+            return sipLayer.getUdpSipProvider().getNewCallId();
         }
         SipProviderImpl sipProvider;
         if (ObjectUtils.isEmpty(ip)) {
@@ -155,8 +155,7 @@ public class SIPSender {
         }
 
         if (sipProvider == null) {
-            sipProvider = transport.equalsIgnoreCase("TCP") ? sipLayer.getTcpSipProvider()
-                    : sipLayer.getUdpSipProvider();
+            sipProvider = sipLayer.getUdpSipProvider();
         }
 
         if (sipProvider != null) {