Implement Zeroconf announcement - Githubissues

s-kostyuk / everpl

The Everthing Platfrom source code

https://everpl.readthedocs.io/

MIT License

0 stars 1 forks source link

Implement Zeroconf announcement #7

Closed s-kostyuk closed 6 years ago

s-kostyuk commented 7 years ago

Announce presense of adpl server in local network via zeroconf (avahi)

See also:

Android Service Discovery, based on zeroconf: https://developer.android.com/training/connect-devices-wirelessly/nsd.html
One related article: https://medium.com/@_tiwiz/bonjour-android-its-zeroconf-8e3d3fde760e
Android sample application using zeroconf (p2p chat based on raw sockets (??)): https://git.io/v5nyh
Zeroconf vs UPnP: http://www.zeroconf.org/zeroconfandupnp.html
An old IETF Working Draft: https://www.w3.org/TR/2014/WD-discovery-api-20140220/#dfn-service-discovery-mechanisms

s-kostyuk commented 6 years ago

Moved to v0.3: This is a feature enhancement that doesn't block further development of everpl

s-kostyuk commented 6 years ago

OK, so here are the details:

everpl will announce itself as _everpl._tcp;
_http._tcp will not be used because the streaming API will be implemented used non-HTTP protocols (most likely - raw WebSockets or MQTT over WebSockets);
the service name will be set to "everpl hub @ hostname" by default but will be able to be overriden in the configuration file;
in the "address" field of announcement the "port" value will be set to the current listening port of REST API interface.

s-kostyuk commented 6 years ago

Draft implementation is ready in hub_discovery branch

s-kostyuk commented 6 years ago

Consider switching to SSDP for hub discovery.

From the one side, SSDP is much simpler protocol than Zeroconf and allows to specify target URL in Location response header. From the other side, Zeroconf allows to assign constant domain names to the hosts, is not affected by IP address changes and allows a hub to be discovered by Apple devices and Android devices natively.

s-kostyuk commented 6 years ago

Stopped on Zeroconf because it allows to receive a constant domain name for dynamic addresses in a local network