How do I validate a custom RedirectURI to support RFC-8252 OAuth2.0 for native Applications

[ekivemark]

Mobile applications have adopted a convention from facebook to register a mobile redirect url that is registered to the phone. this typically takes the format:

fb00000000://........

How do I enable these custom RedirectURIs to pass the URIValidation?

For example in addition to ["http", "https], I want to match against the regular expression
regex = r"\b[a-zA-Z]{2}[0-0]{8}\b"

Is there a configuration for achieving something like this?

/cc @aviars

[aviars]

Any motion on this? Very important feature. We've rolled our own but it would be nice to be in DOT. /cc @synasius

[jleclanche]

We've rolled our own but it would be nice to be in DOT.

Please submit a PR. I'll be happy to review.

[cleder]

see #443