HTTP question

Is it possible to download really large files (>4GB) using HTTP?
Internet explorer starts the download, but fails to show the filesize.
Mozilla just creates an empty file and cancels download (no error message).

it all depends on the clients connection and the servers connection, IE wont give you a file size or time because it cant estimate, in theory it will work, but will your connection stay alive long enough for a single file 4gb transfer? Ide suggest using RAR to split it into a multi-file archive.

My question was more theoretical.

Is this valid for the server to send?

Code:

HTTP/1.1 200 OK
Server: Test Java server
Connection: close
Content-Length: 3298534883328
Content-Type: application/zip

<many bytes here>

IE displays the filesize when Content-Length is more normal.

According to the RFC:

Any Content-Length greater than or equal to zero is a valid value