[lwip-users] LWIP_HTTPD_FS_ASYNC_READ, LWIP_HTTPD_DYNAMIC_FILE_READ

[Ben Stuyts]

Hi all,

While browsing the httpd sources I came across the LWIP_HTTPD_FS_ASYNC_READ and 
LWIP_HTTPD_DYNAMIC_FILE_READ define. In fs.h I read for 
LWIP_HTTPD_FS_ASYNC_READ: support asynchronous read operations (fs_read_async 
returns FS_READ_DELAYED and calls a callback when finished). And for 
LWIP_HTTPD_DYNAMIC_FILE_READ: support fs_read() to dynamically read file data. 
Without this (default=off), only one-block files are supported, and the 
contents must be ready after fs_open().

This sounds like something I could use to soften the ram requirements on my 
http server when serving pages from a serial flash chip. Currently I'm copying 
all open files into ram.

I looked for examples or log messages (in git) on how to use these feature, but 
couldn't find any information. Google doesn't turn up anything either. So my 
first question is: has this been tested and is it working? And the second 
question: are there any examples?

Thanks!
Ben