Stop async Server

[Loris1123]

I didn't find a way to stop an async TCP Server. I need this to test the server with different configuration in a single script.

To stop the async server I added the following code to async.py:

def StopTcpServer(is_mainthread=True):
    from twisted.internet import reactor
    if is_mainthread:
        reactor.stop()
    else:
        reactor.callFromThread(reactor.stop)

It seems like it is working for me. Maybe you should include something similar to pymodbus.

[tmcolby]

I needed the ability to stop the server also. Thank you, Loris1123. Your solution works for me as well. I agree that it would be nice to have this incorporated into pymodbus.

[MM8704]

Hello, I have a question if I have a button that stops the server with the Stopserver () function, how can I start it again without closing the program? I need to update the IP address

[dhoomakethu]

The reactor is not restartable . So I am not sure if there is way to restart it again with out calling StartTcpServer method.

[MM8704]

Thanks for your answer dhoomakethu, I have to implement a method able to change the IP address of the server, without closing the main program.

Initially try to stop the server and start it again with the StarTcpServer method with a new Ip address, but when you stop the reactor and start it again, an error appears. Any recommendation?.

[dhoomakethu]

@MM8704 could you share the error and any code to reproduce your use case?

[MM8704]

@dhoomakethu sure, is a small example of a server mounted on kivy

Please download it in google drive:
https://drive.google.com/open?id=10_VHhRWViiBYwp_OLX20VHzIF8Jo7WVk

[dhoomakethu]

Thanks, I will take a look.Meanwhile, have a look at [modbus-simulator](https://github.com/riptideio/modbus-simulator. It is also based on pymodbus and kivy supports both TCP and Serial servers (uses pymodbus sync server and threads though). You can find the backend code here

[MM8704]

Hi @dhoomakethu, without any positive, have you found something?

[dhoomakethu]

@MM8704 sorry but your code throws me error while running
on_press: Server_TCP.stop(self) TypeError: unbound method stop() must be called with Server_TCP instance as first argument (got ToggleButton instance instead). I would suggest to use the modbus-simulator mentioned above for the time being. I will take a closer look in to your code when I get some free time.

[MM8704]

@dhoomakethu I tried to execute the code that you mentioned but I could not (the launcher file does not really know how to execute it), I just read the code to implement it in my program ... without results.