Improve error exit somewhat...

secondary.py

@@ -26,6 +26,12 @@ def cond_kill(p):
     except:
         pass
 
+def cond_shutdown(s):
+    try:
+        s.shutdown(socket.SHUT_RDWR)
+    except:
+        pass
+
 class Status:
 
     def __init__(self, log):
@@ -182,6 +188,7 @@ def do_backup(hash_name, options, socket_path, mount, path):
 
     # Connect to server config/hashtoc socket
     config_hash = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+    atexit.register(cond_shutdown, config_hash, log)
     config_hash.connect(socket_path)
     # Send secondary config to primary
     config_hash.makefile('w').write(open(config_path).read())