[PYTHON] A note on how to check the connection to the license server port

There are many cases where a CAE application fails to connect to the license server and cannot be started. I will leave how to check the connection to the license server.


The host name and port number of the license server are assumed to be as follows. --Hostname: theserver --Port number: 8888

Check network connection

First, check if you can connect to the host with the ping command.

command prompt

ping theserver

Check port connection

After confirming the connection to the host, confirm the connection to the port.



$tcp = New-Object System.Net.Sockets.TcpClient
# $tcp = New-Type in Object tcp and press the Tab key to complete.
$tcp.Connect("theserver", 8888)

If you can connect


If you cannot connect




import socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('theserver', 8888))

If you can connect

(No output)

If you cannot connect

ConnectionRefusedError: [WinError 10061]The connection could not be made because it was rejected by the target computer.

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