Proxy support

src/main/java/org/gcube/data/transfer/plugins/thredds/ThreddsInstanceManager.java

@@ -71,7 +71,18 @@ public class ThreddsInstanceManager {
 	protected ThreddsInstanceManager(DataTransferContext context) {
 		log.warn("Instance Creation. Should happen only once. Loading information from context..");
 		this.ctx=context;
-		currentHostname=ctx.getCtx().container().configuration().hostname();
+		try {
+			log.info("Loading proxy configuration..");
+			currentHostname=ctx.getCtx().configuration().proxyAddress().hostname();
+			if(currentHostname==null||currentHostname.isEmpty()) throw new Exception("Proxy is : "+currentHostname);
+		}catch(Exception e) {
+			log.info("Unable to get proxy..",e);
+			currentHostname=ctx.getCtx().container().configuration().hostname();
+		}
+		log.info("Hostname to be used is "+currentHostname);
+		
+		
+		
 		currentGHNId=ctx.getCtx().container().id();
 		String tomcatSecurityPath=System.getenv("WEB_CONTAINER_HOME")+"/conf/tomcat-users.xml";