OK

client/client.py

@@ -89,6 +89,7 @@ if not os.path.isfile(CONFIG_LOCATION) or os.stat(CONFIG_LOCATION).st_size == 0:
 SERVER_PUBLIC_KEY = loadPublicKey()
 CLIENT_PRIVATE_KEY = loadPrivateKey(PASSPHRASE)
 CLIENT_ADDRESS = loadAddress()
+LOGGED_IN = False
 
 while True:
     command = input("Type a command:")
@@ -99,6 +100,7 @@ while True:
             print("Invalid command format!")
             continue
 
+        if not LOGGED_IN:
             if separatedCommand[0] == 'LIN' and len(separatedCommand) == 3:
                 network = NetWrapper(CLIENT_PRIVATE_KEY, CLIENT_ADDRESS, separatedCommand[1], SERVER_PUBLIC_KEY)
                 try:
@@ -114,6 +116,9 @@ while True:
                     LOGGED_IN = False
                     continue
                 continue
+        else:
+            print('You are already logged in!')
+
 
         if separatedCommand[0] == 'EXIT':
             sys.exit(1)