[SSDP] Investigate mechanisms to pre-filter devices by Presentation URL about openscreenprotocol HOT 3 CLOSED

Assuming that PR #59 is considered a good approach, we should apply it to mDNS as well (via a TXT record).

from openscreenprotocol.

There was a proposal here from the Berlin F2F that apparently wasn't captured in GitHub:

https://www.w3.org/2018/05/17-webscreens-minutes.html#x06

For SSDP, make advertisement of supported schemes truly optional, in that controllers will still connect to the receiving device in the absence of the PROTOCOLS info. We'll adopt a similar mechanism for mDNS. (per data minimization guidelines)

I think the PR #59 will need to be further revised to cover this; in fact, it looks incredibly complicated in retrospect and should be simplified to match the proposal above.

We can discuss this further at TPAC.

from openscreenprotocol.

Closing as:

• We are not using SSDP any more so discussion of SSDP is moot.
• There is a standard way to advertise device-specific capabilites through protocol extensions: https://w3c.github.io/openscreenprotocol/#protocol-extensions

from openscreenprotocol.