App Engine Blobstore - What can I do to limit the size of a file that a user can upload?

Question

What can I do to limit the size of a file that can be uploaded? I know I can limit it client side with SWFUpload, but how can I limit it server side?

How do I protect against someone uploading a 1GB file and eating up my quota?

Answer 1

App Engine 1.5.4 SDK introduced an option to specify a limit on your blob upload size.

See maxUploadSizeBytes and maxUploadSizeBytesPerBlob of the UploadOptions class.