Why are some files when opened -1 bytes?
This is the byte count reported in the "opening" dialog.
In particular, I see it with a PHP script that dynamically generates files, and yes, these files contain data.
I see this a lot now in Firefox 8 but do not recall such in earlier versions.
Modified by Scott M. Sanders
All Replies (2)
It happens when server response with no Content-Length: field. "Transfer-Encoding: chunked" provides option to download a attached file without known file size.
POST /tmp/Control/form HTTP/1.1
Host: 192.168.0.1
HTTP/1.1 200 OK
Date: Mon, 14 Nov 2011 10:21:21 GMT
Set-Cookie: fileDownloadToken=done; Path=/; Secure
Content-disposition: attachment; filename=ClientFile.exe
:
Content-Type: application/binary
Keep-Alive: timeout=4, max=100
Transfer-Encoding: chunked
Connection: Keep-Alive
It is known problem. See https://bugzilla.mozilla.org/show_bug.cgi?id=683258
Modified by cor-el
Thank you for the info, especially the bug report. It seems to be more or less fixed in Firefox 9 (beta). It simply doesn't show any size now if unknown.