validate method returns false for a valid UUID about uuid HOT 6 CLOSED

Missed your comment, it's just .NET 6 running EF Core and Azure SQL Server, our UUIDs are mostly database generated, I believe some are generate using .NET (Guid.NewGuid()) so nothing crazy tbh

from uuid.

variant field is invalid. Must be 8, 9, a or b per RFC4122.

from uuid.

No it does not, NCS backward compatible UUID's are a perfectly fine variant of v4 UUID's, as specified in the RFC. Yes they are reserved for backwards compatibility but that does not make them invalid, nowhere in the RFC does it say that variants other than 8-b are. Same goes for so called GUID's (Microsoft's UUID's, variant c-d). I think a documentation update is in place to clarify which variants it can and can't validate.

Also: Because of the above facts this package is unusable for anyone trying to validate anything generated by a Microsoft backed tech, e.g. .NET, SQL Server. Please make this clear somewhere

from uuid.

The only place RFC4122 alludes to NCS ids is to reserve the variants they're known to use. It does not speak to the NCS format or any other characteristics of NCS ids that may or may not make them "valid". The same can be said of the "Reserved, Microsoft" variant (0b110), by the way.

Per the spec, the 0b10x is the only variant specified by RFC4122. I.e. Ids with that variant are the only ones that can be validated with any degree of confidence.

If NCS ids are a concern for you, you'll need to distinguish them from RFC4122 UUIDs before calling validate().

from uuid.

That's a fair point, in reading the spec I interpreted it differently but coming back to it you are correct. Thanks for the reply! We switched to backend validation using an appropriate Microsoft-based solution as it didn't really matter where we validated the UUID.

from uuid.

@TheAnarchoX If you don't mind my asking, what application are you working on that's using NCS uuids ids? This is the first time in over a decade of maintaining this project that I've heard of anyone using them. 😮

from uuid.