telmobarrena98 opened a new issue, #1864:
URL: https://github.com/apache/plc4x/issues/1864
### What happened?
I am launching an OPCUA server through Docker running the following .py file:
```
import asyncio
import logging
import random
from asyncua import Server, ua
async def main():
_logger = logging.getLogger("asyncua")
# setup our server
server = Server()
await server.init()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# setup our own namespace, not really necessary but should as spec
uri = "http://examples.freeopcua.github.io";
idx = await server.register_namespace(uri)
ns = "ns=2;s=freeopcua.Tags.pressure"
ns2 = "ns=2;s=freeopcua.Tags.temperature"
min_val = -0.5
max_val = 0.6
# populating our address space
# server.nodes, contains links to very common nodes like objects and root
myobj = await server.nodes.objects.add_object(idx, "MyObject")
pressure = await myobj.add_variable(ns, "MyVariable", 10.5)
temperature = await myobj.add_variable(ns2, "MyVariable", 26.7)
# Set MyVariable to be writable by clients
await pressure.set_writable()
await temperature.set_writable()
opcs = [ pressure, temperature ]
_logger.info("Starting server!")
async with server:
while True:
await asyncio.sleep(100)
random_counter = random.uniform(min_val, max_val)
for opc in opcs:
new_val = await opc.get_value() + random_counter
if(new_val>100.0):
new_val=100.0
elif(new_val<0.0):
new_val=0.0
_logger.info("Set value of %s to %.1f", opc, new_val)
await opc.write_value(new_val)
if __name__ == "__main__":
logging.basicConfig(level=logging.DEBUG)
asyncio.run(main(), debug=True)
```
. I am able to connect to it with UA Expert. However, when using the opcua
driver of plc4go, i get this error in the server side:
` raise ua.UaError(f"Unsupported message type {header.MessageType}")
asyncua.ua.uaerrors._base.UaError: Unsupported message type b'\x00\x00\x00`
and this one on the .go file:
`
Error connecting to PLC: Error during connection: timeout after 5s
`
### Version
v1.23.1
### Programming Languages
- [ ] plc4j
- [X] plc4go
- [ ] plc4c
- [ ] plc4net
### Protocols
- [ ] AB-Ethernet
- [ ] ADS /AMS
- [ ] BACnet/IP
- [ ] CANopen
- [ ] DeltaV
- [ ] DF1
- [ ] EtherNet/IP
- [ ] Firmata
- [ ] KNXnet/IP
- [ ] Modbus
- [X] OPC-UA
- [ ] S7
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