Re: [lwip-users] httpserver(-raw) and large files

[Louis Wells]

Hello,

To my knowledge it does support external file systems. 

The way that I have the webserver running, fsdata.c contains all of my web pages. fsdata.c is in external flash. 

When http_find_file runs and calls fs_open to find your file you get a file struct with length variables and a pointer to your file which is still sitting in external memory. These variables are then added into the hs struct. 

Afterwards http_send_data and http_write get called, finally passing your pointer into tcp_write(it is still pointing at external mem at this point). In tcp_write, your webpage from external memory gets copied into pbufs, which exist in ram and the internal lwip stuff sends your data out.

I just ran through this in my debugger, so I am pretty sure this is how it works. You should be able to just use the normal fs functions. If anyone sees anything wrong with what I said please point it out.

Hope that helps. 

On Tue, Feb 26, 2013 at 2:16 AM, Philipp Tölke <address@hidden> wrote:

Hello everyone,

Am 21.02.2013 17:41, schrieb Louis Wells:

> I do not believe that it is necessary to even use fs_custom in this
> situation.

Is it correct that the httpserver_raw does not support "external"
filesystems and files that do not fit into the RAM?

Regards,
--
Philipp Tölke, M.Sc. - Software-Developer - fos4X GmbH - www.fos4x.de
Thalkirchner Str. 210, Geb. 6 - D-81371 München; AG München HRB 189 218
T +49 89 999 542 58 - F +49 89 999 542 01
Managing Directors: Dr. Lars Hoffmann, Dr. Mathias Müller

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