Developers

[squirreltown]

I want to write a roku function that will find a device on my LAN. It's a RaspberryPi,  which interestingly has the same first-half of the MAC address as all other pi's -B8:27:EB.
I haven't worked with these parts of the SDK, so I'm looking for a basic description of the components needed to do that. Thanks.

[belltown]

I think you'll need to know its IP address.

[squirreltown]

Bummer. How does a media player find a server? The pi is setup as a webserver. The Roku is set up to enter the I.P. manually now. Sure would be nice...

[belltown]

If you install some kind of UPnP software on the Pi that can respond to SSDP M-SEARCH requests, then I can post some code I have that discovers the IP addresses of other Rokus on the network that can easily be adapted to find your Pi(s) on the network.

[squirreltown]

Thank you. I'll look into making that happen and get back. Pi-world is pretty big, there must be something out there.

[EnTerr]

even easier - tell your router to always give the same IP to that MAC address, a feature often called "DHCP reservations"

[squirreltown]

"EnTerr" wrote:
even easier - tell your router to always give the same IP to that MAC address, a feature often called "DHCP reservations"

Yes, well I do that at home, I want to make it more portable.

[EnTerr]

"squirreltown" wrote:
I want to write a roku function that will find a device on my LAN. It's a RaspberryPi,  which interestingly has the same first-half of the MAC address as all other pi's -B8:27:EB.

This will let you know why https://en.wikipedia.org/wiki/MAC_addre ... ss_details
Don't think you can use it though, there is no B/S API to query ARP cache.

[EnTerr]

"squirreltown" wrote:
Yes, well I do that at home, I want to make it more portable.

What's the reason to want to know RasPi's IP from a Roku - are there particular services running on it?
If so, you might be able to discover that in a hacky way - say if there is web server, you can have some code that scans the network for your guy on port 80, knowing what to expect there.

[squirreltown]

As was inevitable, I've built a thing that is too complex, uses too much bandwidth, and is too artsy to be a screensaver so I've decided it's an installation. The Pi is a web server, holds all the files and does Imagemagick processing. So anything I can do to make it slicker while demonstrating it seems worth the effort. I think I will try @belltown 's way first, but what you describe sounds like second choice for sure, If I get there I'll ask again about how I might go about that.

Thanks both of you for answering, I appreciate it.