Error when running example code about node-eibd

[snowdd1]

What exactly did you try?
The example at the end of the readme in which a groupsocketlisten() is shown?
Did you change the IP and port to match your knxd/eibd server (default in the example is localhost:6720)
What Hardware and OS are you using?
I am using node-eibd successfully on node 0.12.1 on arm7 (raspberry2).

[cjk]

@snowdd1 Thanks for the quick reply.
I was trying out the example on the bottom using groupsocketlisten().

I was probably using the wrong connection-values (port, ip-address), will have to try this again. But from the error-message I did not think of a connection-error at first. It sounded like perhaps the event-emitter implentation was causing problems.

./bin/groupread localhost 3671 "1/1/5" was also giving me

(node) warning: possible EventEmitter memory leak detected. 11 data listeners added. Use emitter.setMaxListeners() to increase limit.
Trace
[...]
RangeError: Maximum call stack size exceeded

for the same reasons.

Thanks for letting me know to check my eibd-connection first!

[cjk]

OK, after starting eibd with the -i option (listen on TCP) instead of -u it's working without the error.

Now I just have to figure out how to listen to ongoing bus-traffic, since that doesn't seem to work with the -i option.

[snowdd1]

It's running with -i in my installation. Listen on the bus - have a look at my pull request #15. I have implemented a very basic subscription model with callbacks that can be used to subscribe to specific group addresses. E.g. if you want your nodeJS program function to be called if 1/1/5 is sent over the wire.

[cjk]

@snowdd1 Great advice! I looked at your fork and considering using that one instead (perhaps you should publish it on NPM using your namespace).
While I'm at it, perhaps I should replace eibd with knxd along the way, it seems to work for most people who have tried it. I'll see if I can create an Arch-Package and publish it then for others to re-use.

[snowdd1]

I just did a commodity function I needed myself. @andreek is clearly the owner of this whole thing.
If he is not looking into github for some weeks, I might package the extension into an eibd-commodity package myself.

[snowdd1]

Thanks for letting me know to check my eibd-connection first!

Been there myself, anyway...

[cjk]

Somewhat OT here, but people may find it useful:
I created a package-build for Arch-Linux for the KNXd that can be used as a (maintained) drop-in replacement for EIBd - works for me so far: https://aur.archlinux.org/packages/knxd-git/

[andreek]

@cjk I guess '-u' is used in eibd/knxd for usb interface, right? Maybe we have to write this in the README. node-eibd only supports TCP.

[cjk]

@andreek You're right, I actually don't need -u since I'm not using USB (have an IP-router). So, node-eibd is the perfect library for me, thanks for writing it! 👍
But it's also true that documentation is a bit scarce right now, which makes it hard for beginners to get up-and-running. Lot's of trial-and-error needed.
Let's see if we can improve the docs in the future, I'll try to help if I can.