Server connection problem

[MegaSova]

code:

---

#!/usr/bin/env python3
f = open("/etc/hostname", "r")
lines = f.read().split('\n')
bric_name = lines[0]
f.close()
from time import sleep
import threading
import ev3dev2
import ev3dev2.sound
import evdev
#import gamepad
import rpyc
from rpyc.utils.server import ThreadedServer

print(bric_name)

print(rpyc.version)

if bric_name == "ev3devfrontright":
sound = ev3dev2.sound.Sound()
class MyService(rpyc.Service):
def on_connect(self):
print("new connect")
pass

    def on_disconnect(self):
        print("disconnect")
        pass
    
    def exposed_getmodule(self):
        pass

if __name__ == '__main__':
    print("starting server")
    s = ThreadedServer(MyService, port=18812)
    print("server creat")
    s.start()

elif bric_name == "ev3devfrontleft":
pass

elif bric_name == "ev3devbackright":
pass

elif bric_name == "ev3devbackleft":
print("start connect")
conn = rpyc.classic.connect('192.168.0.2')
print("connect accept")
sleep(5)
while True:
print("OK")
sleep(5)

pass

---

2 controllers
server: ev3devfrontright
client: ev3devbackleft
server starts.

when the client knocks on the server, it joins and immediately disconnects with an error:

---

Traceback (most recent call last):
File "/home/robot/blrpyc/main.py", line 55, in
conn = rpyc.classic.connect('192.168.0.2')
File "/usr/lib/python3/dist-packages/rpyc/utils/classic.py", line 68, in connect
return factory.connect(host, port, SlaveService, ipv6 = ipv6, keepalive = keepalive)
File "/usr/lib/python3/dist-packages/rpyc/utils/factory.py", line 90, in connect
return connect_stream(s, service, config)
File "/usr/lib/python3/dist-packages/rpyc/utils/factory.py", line 51, in connect_stream
return connect_channel(Channel(stream), service = service, config = config)
File "/usr/lib/python3/dist-packages/rpyc/utils/factory.py", line 40, in connect_channel
return Connection(service, channel, config = config)
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 151, in init
self._init_service()
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 154, in _init_service
self._local_root.on_connect()
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 146, in on_connect
self._conn.eval = self._conn.root.eval
File "/usr/lib/python3/dist-packages/rpyc/core/netref.py", line 150, in getattr
return syncreq(self, consts.HANDLE_GETATTR, name)
File "/usr/lib/python3/dist-packages/rpyc/core/netref.py", line 71, in syncreq
return conn.sync_request(handler, oid, *args)
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 441, in sync_request
raise obj
AttributeError: 'MyService' object has no attribute 'exposed_eval'

========= Remote Traceback (1) =========
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 305, in _dispatch_request
res = self._HANDLERS[handler](self, *args)
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 541, in _handle_getattr
return self._access_attr(oid, name, (), "_rpyc_getattr", "allow_getattr", getattr)
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 507, in _access_attr
return accessor(obj, name, *args)
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 69, in _rpyc_getattr
return getattr(self, name)
AttributeError: 'MyService' object has no attribute 'exposed_eval'

---

Exited with error code 1.

---

the server says that the client joined and immediately connected.

rpyc 3.3.0
python 3.10
oc windows 11