First and Last Chunks server side validation

[ideiasfrescas]

Hello

We believe that resumable.js provides a valid function by checking the type, but the file extension can be changed to anything else by the uploading user, so as far as resumable knows the file has a valid extension but the mime content is not.

We would like to ask when to validate a mime type on the server side using prioritizeFirstAndLastChunk using the PHP Backend.

Thank you in advance.
Best regards.