Google Cast App without internet

Question

is it also possible to run Cast apps on Chromecast without internet access in a local network only? Maybe with an own webserver. For a showcase event I can not ensure access to

Answer 1

As Leon says, the 'cast needs Internet access part of the time. Booting (I didn't know that!), and to resolve the AppID to the receiver app URL. Once the 'cast has the URL to load and had resolved the hostname in the URL to an IP address, it no longer requires the Internet, IF everything is set up correctly and on the local subnet.

For example, I develop cast apps at home. Lets say I registered my app and the custom receiver associated with it is at https://10.0.0.5/basil_app1/reciever.html (or at a hostname that resolves in public DNS to the private IP 10.0.0.5, a hostname is what I actually use).

Then, if my app needs to load further media, it can reference it either by the already resolved hostname, or by IP, again served from the host at 10.0.0.5

It sounds a little like you're unclear on how to set up and interact with a private network and web server, which is not a Chromecast problem really.

For me, if I had to do a Chromecast demo at (for example) a customer site and was unsure of the network situation, I'd set up the Chromecast to use a private hotspot Wifi network provided by my cell phone, and have all the web resources needed served from my laptop, again configured on the private Wifi network. Again, not really a 'cast programming problem.