Fixed a build failure caused by the change described in AXIS2-4196.
diff --git a/modules/core/src/main/java/org/apache/sandesha2/util/SandeshaUtil.java b/modules/core/src/main/java/org/apache/sandesha2/util/SandeshaUtil.java
index 44681af..2bec253 100644
--- a/modules/core/src/main/java/org/apache/sandesha2/util/SandeshaUtil.java
+++ b/modules/core/src/main/java/org/apache/sandesha2/util/SandeshaUtil.java
@@ -933,9 +933,9 @@
 			msgContext.setTransportOut(sandesha2TransportOutDesc);
 			
 			//this invocation has to be a blocking one.
-			Boolean isTransportNonBlocking = (Boolean) msgContext.getProperty(MessageContext.TRANSPORT_NON_BLOCKING);
+			Boolean isTransportNonBlocking = (Boolean) msgContext.getProperty(MessageContext.CLIENT_API_NON_BLOCKING);
 			if (isTransportNonBlocking!=null && isTransportNonBlocking.booleanValue())
-				msgContext.setProperty(MessageContext.TRANSPORT_NON_BLOCKING, Boolean.FALSE);
+				msgContext.setProperty(MessageContext.CLIENT_API_NON_BLOCKING, Boolean.FALSE);
 	
 	 		// sending the message once through Sandesha2TransportSender.
 			if (msgContext.isPaused())
@@ -944,7 +944,7 @@
 				AxisEngine.send(msgContext);	
 			}
 			//put the original value of isTransportNonBlocking back on
-			msgContext.setProperty(MessageContext.TRANSPORT_NON_BLOCKING, isTransportNonBlocking);
+			msgContext.setProperty(MessageContext.CLIENT_API_NON_BLOCKING, isTransportNonBlocking);
 		}
 		if (LoggingControl.isAnyTracingEnabled() && log.isDebugEnabled())
 			log.debug("Exit: SandeshaUtil::executeAndStore");
diff --git a/modules/core/src/main/java/org/apache/sandesha2/workers/SenderWorker.java b/modules/core/src/main/java/org/apache/sandesha2/workers/SenderWorker.java
index 37a001b..4c1a48b 100644
--- a/modules/core/src/main/java/org/apache/sandesha2/workers/SenderWorker.java
+++ b/modules/core/src/main/java/org/apache/sandesha2/workers/SenderWorker.java
@@ -326,12 +326,12 @@
 						if (log.isDebugEnabled())
 							log.debug("Resuming a send for message : " + msgCtx.getEnvelope().getHeader());
 						msgCtx.setPaused(false);
-						msgCtx.setProperty(MessageContext.TRANSPORT_NON_BLOCKING, Boolean.FALSE);
+						msgCtx.setProperty(MessageContext.CLIENT_API_NON_BLOCKING, Boolean.FALSE);
 						response = AxisEngine.resumeSend(msgCtx);
 					} else {
 						if (log.isDebugEnabled())
 							log.debug("Sending a message : " + msgCtx.getEnvelope().getHeader());
-						msgCtx.setProperty(MessageContext.TRANSPORT_NON_BLOCKING, Boolean.FALSE);
+						msgCtx.setProperty(MessageContext.CLIENT_API_NON_BLOCKING, Boolean.FALSE);
 						AxisEngine.send(msgCtx);  // TODO check if this should return an invocation response
 					}
 				} else {
@@ -350,7 +350,7 @@
 				
 					if (log.isDebugEnabled())
 						log.debug("Resuming a send for message : " + msgCtx.getEnvelope().getHeader());
-			        msgCtx.setProperty(MessageContext.TRANSPORT_NON_BLOCKING, Boolean.FALSE);
+			        msgCtx.setProperty(MessageContext.CLIENT_API_NON_BLOCKING, Boolean.FALSE);
 					response = AxisEngine.resumeSend(msgCtx);
 				}
 				if(log.isDebugEnabled()) log.debug("Engine resume returned " + response);