MD5 checksum for model binary files

[dustinkerstein]

It would be great to have an automatic checksum verification for the downloaded/cached models. I ran into a small issue with an interrupted download which led to trying to load bad data (and a hard crash). As a rough workaround I am ensuring that the user is allowed to retry the load/download. Maybe before loading the model it could verify the binary MD5?

[xuegao-tzx]

Now MD5 verification will be performed after downloading. If you use it in your own project, it is recommended to use a dedicated download dependency and perform MD5 verification after downloading to avoid damage to the model file.

[dustinkerstein]

Ok great. I'll test that change as soon as I see it added to the main branch. Also, for flexibility, maybe you could add an optional string parameter to the downloader that allows for passing the expected MD5. Would that be feasible? Thanks!