[lwip-devel] [bug #54814] httpd dynamic file read

[Vua Hoa]

Follow-up Comment #2, bug #54814 (project lwip):

First, sorry for the wrong comments, it should be 'fs_read_custom' instead of
'fs_open_custom'.
I think the two options work as following: 
1. LWIP_HTTPD_CUSTOM_FILES = 1 -> user app should provide fs_open_custom to
feed file data buffer to the file->data pointer, and the httpd can use
file->data directly.
2. LWIP_HTTPD_DYNAMIC_FILE_READ = 1 -> the httpd should ALWAYS call
fs_read_custom to feed data before each sending, it should NOT use file->data.
User App can set file->data to a specific value (maybe used later in the
fs_read_custom), and httpd shall NOT use it.

The bug I see here is for the 2nd options (LWIP_HTTPD_DYNAMIC_FILE_READ = 1):
when file->data != NULL, httpd use this pointer to send out data, it does not
call fs_read_custom.

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