This bug is related to 53363. Please read that first. There is an undocumented feature of the old NS API that Acrobat relies on in order to make byte range requests work. I am pretty sure I wrote a bug about this early this year, but my hard disk crashed so I can't easily produce the bug number. Basically, the behavior of Nav 4.X and earlier (and now Mac IE 5) is that when Nav encounters a PDF file, it starts an initial connection and pours the file into Acrobat (NPP_Write). It keeps that initial connection open and pouring **until* the first NPN_RequestRead. At that point, it kills the initial connection. NPN_RequestRead currently is broken (53363), so I am not sure if this undocumented feature is currently supported or not. I suspect not. And like the other aspects of byte range requests that I discuss in bugs 53363 and 53344, this feature is absolutely necessary to make mozilla a useable platform for Acrobat.
Sorry -- this is a dup of 53372 (I got impatient with your server and committed the bug several times).
*** This bug has been marked as a duplicate of 53372 ***
Status: UNCONFIRMED → RESOLVED
Last Resolved: 18 years ago
Resolution: --- → DUPLICATE
Status: RESOLVED → VERIFIED
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