I suggest that, initially at least, you allow users to provide host name
(preferred) or IP address of their Alexa devices.

A skill does not know the local IP address of an Echo (ideas below for
how it could be done) and I do not think that Alexa devices respond to
discovery requests (at least not after they have been set-up).

However, some ideas:
If you ask an Alexa device to perform a "Discover" then it issues SSDP
broadcast to try to find other systems (Philips Hue I think).
So if your bridge/whatever listened out for it then it could capture the
IP address in the list of possible devices.
However, I think it uses port 80 ... so would that be a problem e.g. on
pCP where there is the pCP web server listening on that port?
I thought that only the primary Echo issued the SSDP but I see from
statements elsewhere that each Echo does this - presumably in an attempt
to ensure it reaches all parts of the home network.

Another way that could work ... the Echo device could ask MediaServer
skill to do something that results in a Play request being sent (via a
.pls) that points to a specific IP:port where the special code is
listening (e.g. LMSIPAddress:8888 .... and when the special code gets
the request it captures the IP address as a potential Echo device.
So the end user would walk to each Echo and say something like "Ask
mediaserver to register with LMS)

Some other things to keep in back of mind...
MAC addresses - might be able to use the prefix to find Amazon Echo
devices (not checked to see if range is different to other Amazon
devices such as Fire) but there are 3rd-party devices with Alexa built
in that presumably use MAC address range of the 3rd-party device and not
an Amazon (lab126) one.



Paul Webster
http://dabdig.blogspot.com
author of \"now playing\" plugins covering radio france (fip etc), kcrw,
supla finland, abc australia, cbc/radio-canada and rte ireland
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View this thread: http://forums.slimdevices.com/showthread.php?t=111016

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