Open William-Durand opened 2 years ago
Hi, I have the same issue, please somebody can help us?
Here is an example adapted from scripts/examples/simple_tcp_server.py
(you will need python >= 3.6):
import time
from socketserver import TCPServer
from collections import defaultdict
from threading import Thread
from umodbus import conf
from umodbus.server.tcp import RequestHandler, get_server
# A very simple data store which maps addresses against their values.
data_store = defaultdict(int)
TCPServer.allow_reuse_address = True
app = get_server(TCPServer, ("", 5020), RequestHandler)
@app.route(slave_ids=[1], function_codes=[1, 2], addresses=list(range(0, 10)))
def read_data_store(slave_id, function_code, address):
"""" Return value of address. """
return data_store[address]
@app.route(slave_ids=[1], function_codes=[5, 15], addresses=list(range(0, 10)))
def write_data_store(slave_id, function_code, address, value):
"""" Set value for address. """
data_store[address] = value
def serve():
with app:
app.serve_forever()
def main():
server = Thread(target=serve)
server.start()
try:
# whatever main loop you decide to run
while True:
time.sleep(1)
finally:
app.shutdown()
server.join()
if __name__ == "__main__":
main()
I'm not sure if this is what you're looking for but if you press Ctrl-C it should stop the server running on the other thread.
This is more a question than an issue.
I try to make a modbus server in a python thread but I don't know how to stop it. I took the exact code I found in the example part of documentation. I set up my app ("get_server(TCPServer, self.interface, RequestHandler)") and I ran this code inside my thread:
Everything works fine except I have to stop my program manually because my thread never stop. The question is: how to stop the "app.serve_forever()" part when I don't need my server anymore?
Just in case, I created an event called "stop_event" which can be set whenever I want to. But I don't really know how to use it to force the server to stop.
Best regards.