OPC-UA: only support the encryption policy selected in config.
By default open62541 client accepts all supported policies, but in makes problem
when negociating with some servers while most clients seems to only support
one policy at a time.
#!/bin/bash
rm -f ./SRVOK ./PLCOK
# Run server
$BEREMIZPYTHONPATH - > >(
echo "Start SRV loop"
while read line; do
# Wait for server to print modified value
echo "SRV>> $line"
if [[ "$line" == 3.4 ]]; then
echo "PLC could write value"
touch ./SRVOK
fi
done
echo "End SRV loop"
) << EOF &
import sys
import time
from opcua import ua, Server
server = Server()
server.set_endpoint("opc.tcp://127.0.0.1:4840/freeopcua/server/")
uri = "http://beremiz.github.io"
idx = server.register_namespace(uri)
objects = server.get_objects_node()
testobj = objects.add_object(idx, "TestObject")
testvarout = testobj.add_variable(idx, "TestOut", 1.2)
testvar = testobj.add_variable(idx, "TestIn", 5.6)
testvar.set_writable()
server.start()
try:
while True:
time.sleep(1)
print testvar.get_value()
sys.stdout.flush()
finally:
server.stop()
EOF
SERVER_PID=$!
# Start PLC with opcua test
setsid $BEREMIZPYTHONPATH $BEREMIZPATH/Beremiz_cli.py -k \
--project-home $BEREMIZPATH/tests/projects/opcua_client build transfer run > >(
echo "Start PLC loop"
while read line; do
# Wait for PLC runtime to output expected value on stdout
echo "PLC>> $line"
if [[ "$line" == 1.2 ]]; then
echo "PLC could read value"
touch ./PLCOK
fi
done
echo "End PLC loop"
) &
PLC_PID=$!
echo all subprocess started, start polling results
res=110 # default to ETIMEDOUT
c=30
while ((c--)); do
if [[ -a ./SRVOK && -a ./PLCOK ]]; then
echo got results.
res=0 # OK success
break
else
echo waiting.... $c
sleep 1
fi
done
# Kill PLC and subprocess
echo will kill PLC:$PLC_PID and SERVER:$SERVER_PID
pkill -s $PLC_PID
kill $SERVER_PID
exit $res