added exponential timeout when trying to reconnect if authentication error

bin/cc-node

@@ -12,6 +12,7 @@ import signal
 import threading
 import socket
 from time import sleep
+from math import exp
 
 try:
     import daemon
@@ -66,6 +67,7 @@ def run_node(options):
         logging.info('Connected to server %s' % options['address'])
 
     def authentication():
+        timeout = 1
         login = options['login'].replace('$HOSTNAME', socket.gethostname())
         while node.manager.is_running():
             try:
@@ -74,6 +76,9 @@ def run_node(options):
                 logging.critical('Authentication error: %s' % error)
                 sleep(2)
             else:
+                timeout += 0.1
+                print exp(timeout)
+                sleep(exp(timeout))
                 logging.info('Authenticated to server')
                 break