Flex Connector does not connect to OPCUA gateway and causes crash

[airpressurerecords]

Problem

• ( ) bug report => please search GitHub for a similar issue or PR before submitting
• ( x ) unexpected behaviour => please visit the Wiki before

Information

Current behaviour

I am using the new Flex Connector with the following payload to dynamically use the IP address of a specific OPCUA gateway:

But after triggering the connection the Node-red application always crashes with the following error message:

TypeError: Cannot read property 'toString' of undefined
    at /Users/de164582/.node-red/node_modules/node-opcua-client/src/client_base.js:246:51
    at /Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:3888:9
    at /Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:473:16
    at replenish (/Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:1006:25)
    at iterateeCallback (/Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:995:17)
    at /Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:969:16
    at Immediate._onImmediate (/Users/de164582/.node-red/node_modules/node-opcua-client/node_modules/async/dist/async.js:3885:13)
    at runCallback (timers.js:810:20)
    at tryOnImmediate (timers.js:768:5)
    at processImmediate [as _immediateCallback] (timers.js:745:5)

I also tried to put the parameters into the msg object (not payload) because it is not precisely documented in the node-red node description. But it didn't work neither.

Expected behaviour I expect the gateway to be connected after the Flex Connector node received the payload shown above.

Minimal reproduction of the problem with instructions

1. Flex Connector
2. Fill the payload with a function and the following content:

   msg.payload = {}
   msg.payload.endpoint = 'opc.tcp://9.241.158.49:4129/'
   msg.payload.keepSessionAlive = true
   msg.payload.securityPolicy = 'None'
   msg.payload.securityMode = 'None'
   msg.payload.name = 'bms129lgwp01'
   msg.payload.endpointMustExist = false
   msg.payload.autoSelectRightEndpoint = false  
   msg.payload.showErrors = true
   msg.payload.publicCertificateFile = null
   msg.payload.privateKeyFile = null
   msg.payload.discoveryUrl = null
   msg.payload.defaultSecureTokenLifetime = 0
   msg.payload.strategyMaxRetry = 0
   msg.payload.strategyInitialDelay = 0
   msg.payload.strategyMaxDelay = 0
   msg.payload.strategyRandomisationFactor = 0
   msg.payload.requestedSessionTimeout = 0
   msg.payload.connectionStartDelay = 0
   msg.payload.reconnectionDelay = 0
   return msg

3. Inject

Your Environment

Please tell us about your environment:

• Device :

  • ( x ) macOS: v10.14.5
  • ( ) Linux: v
  • ( ) Windows: v
  • ( ) Raspbian: v
  • ( ) Other:
    • Name:
    • Version:

• Node-RED version: v0.19.4

• node-red-contrib-iiot-opcua version: `` v13.10.2

• Node: (min. 8.x) node --version = v8.15.0

[biancode]

please test with prerelease 3.11.1-4

[biancode]

reopen if it is also in v3.11.2 or above