Print a message while connecting to JCentral

src/TJAlienConnectionManager.cxx

@@ -2,6 +2,7 @@
 // Author: Volodymyr Yurchenko 27/06/2019
 
 #include "TJAlienConnectionManager.h"
+#include <iostream>
 
 ClassImp(TJAlienConnectionManager)
 
@@ -54,13 +55,16 @@ int TJAlienConnectionManager::CreateConnection()
             return 0;
         }
 
+        std::cout << "\r" << "Opening connection to JCentral. Please wait" << std::flush;
         for (int i = 0; i < dns_jcentral.lenght(); i++)
         {
+            std::cout << "." << std::flush;
             current_host = dns_jcentral.get_next_host();
             ConnectJCentral(co, current_host);
 
             if (connection_flag)
             {
+                std::cout << "\r" << std::flush;
                 Info("TJAlienConnectionManager", "Successfully connected to %s", current_host.c_str());
                 co.password = "";
                 fWSHost = default_server;
@@ -72,6 +76,7 @@ int TJAlienConnectionManager::CreateConnection()
             else
             {
                 if (gDebug > 0) {
+                    std::cout << "\r" << std::flush;
                     Error("TJAlienConnectionManager", "Failed to connect to %s - retrying...", current_host.c_str());
                 }
                 sleep(1);
@@ -79,6 +84,7 @@ int TJAlienConnectionManager::CreateConnection()
         }
         creds.removeCredentials(co.kind);
     }
+    std::cout << "\r" << std::flush;
     Error("TJAlienConnectionManager", "Failed to connect to any server! Giving up");
     return -1;
 }