Out of band as an URI fragment

[FabioPinheiro]

Currently in the specs, the out-of-band messages are defined as a URI query parameter:

The _oob query parameter is required and is reserved to contain the DIDComm message string.

https://<domain>/<path>?_oob=<encodedplaintextjwm>

But would be great if we could define out-of-band messages using URI fragments. Minor change in the way that we specify that _oob. We are talking about HTTP links.

https://<domain>/<path>#_oob=<encodedplaintextjwm>

Would be awesome if everyone support that both ways. If an application (DID Comm capable) is scanning a QRcode that is an out-of-band message they should look in the URL query parameter and then look in the URI fragments. I think would be a great improvement for web apps and single-page applications.

[FabioPinheiro]

cc @rodolfomiranda this was what I was suggesting the other day.