NoFlo Node.js runtime registers with its local ip and not with the configured public ip. Bug?

[Heiner Bunjes]

I want to build a Docker container for the noflo-nodejs-runtime. It can be found under https://github.com/sejnub/docker-noflo-runtime-js/blob/master/Dockerfile

After node is configured with 

    node node_modules/.bin/noflo-nodejs-init --user <id> --host <public runtime ip> --port 3569 --label "Local NoFlo Test"

it shows the following:

    Stored the following configuration to /flowhub.json
        id: "<36 digit id>"
    user: "<another 36 digit id>"
    host: "<public ip of the runtime host>"
    port: 3569
    label: "Local NoFlo Test"
    secret: "<secret>Ai(x5Eo<"
    permissions: {
      "<same secret again>": [
        "protocol:component",
        "protocol:runtime",
        "protocol:graph",
        "protocol:network",
        "component:getsource",
        "component:setsource"
      ]
    }

When I then start the runtime with 

    node node_modules/.bin/noflo-nodejs --capture-output=false

    

the runtime is registered and visible in the browser on the app.flowhub.io after logging in.

But the runtime is shown with "ws://172.17.0.4:3569" which is the local ip address of the container the runtime is hosted in.

So when I click the runtime it of cause can not connect.

First Question: Why is it the runtime registered with the local ip? Shouldn't it be the configured <public ip of the runtime host>?

When I then register the runtime manually via "new runtime register / add manually" it works, but only one time. When I go back to "home" (app.flowhub.io) the manually registered runtime is shown for only half a second, then it's gone.

Second question: Why is the manually registered runtime only usable a single time? 

[Heiner Bunjes]

I got the feeling that this is the wrong place for this questions as they are directly noflo code related. So I posted the updated version at https://github.com/noflo/noflo-nodejs/issues/105. So answers might be better placed there. Sorry for this cross posting.