Re: [libmicrohttpd] Demo "largepost.c" with a file about 6GB

[silvioprog]

Hello Christian, thanks for reply. :-)

So, I've tested it on Xubuntu 14.04 64 bits and it has worked fine, so it seems to be a problem related to MHD on Windows. I'm using Windows 7 Pro 64 bits, and MHD was compiled for 32 bits with MingWG-w64 32 bits. To compile the demo I just opened and compiled it in my CLion, so I think that it doesn't have an I/O limit, and I have 40 GB on my disk.

I've noticed that the progress stay a long time (~1min) in 99% even on Linux, but it receive the entire upload.

Can anybody confirm if it's a bug related only to MHD on Windows? :-/

On Tue, Mar 29, 2016 at 3:32 AM, Christian Grothoff <address@hidden> wrote:

Hi Silvio,

I just tried a 4699722540 byte file with both Firefox and Chrome on
GNU/Linux using 'largepost.c', and it worked without a problem.

If you've compiled your own custom application, make sure you've enabled
large file support for your disk IO.  That said, I've not (recently?)
tested this on a 32-bit system. Still, MHD should handle large files
like this.

As far as file limits are concerned, the MHD_PostDataIterator is limited
to 2^64-1 bytes. MHD itself has no limit as it has no concept of files
and treats requests as a possibly infinite stream of data. However, this
requires that the client does NOT set "Content-Length" (but use chunked
encoding). If "Content-Length" is present, the limit is again 2^64-1.
Note that technically HTTP doesn't impose the 64-bit limit on HTTP, but
I'm not aware of any HTTP client or server supporting > 64-bit values here.


Happy hacking!

Christian

--

Silvio Clécio