catch ConnectionRefused also

setup_tunnel.py

@@ -22,7 +22,7 @@ def try_connect(ip: str) -> bool:
     sock = None
     try:
         sock = socket.create_connection((ip, 22), 1)
-    except socket.timeout:
+    except (socket.timeout, ConnectionRefusedError):
         return False
     sock.close()
     return True
@@ -88,6 +88,7 @@ ip = list(filter(lambda x: ip_address(x).version == 4, ips))[0]
 
 while not try_connect(ip):
     print('Waiting for SSH service to become available...')
+    sleep(4)
     pass
 
 open_conn(ip)