[lwip-users] Dealloc in fs_close_custom()?

[Giuseppe Modugno]

I read the examples in lwip-contrib, mainly genfiles_example.c. The 
dynamic memory allocated for the file content is freed in 
fs_close_custom(). However I couldn't explain why.

Indeed, mostly if the content is small, it is completely sent in 
http_recv()/http_send()/http_eof()/http_close_conn()/http_close_or_abort_conn()/http_state_free()/fs_close()/fs_close_custom().

tcp_write() is called in http_write() without TCP_WRITE_FLAG_COPY, at 
least it seems so to me. If I understood well, this means the content 
isn't copied in another buffer, so it *will* be sent from the original 
*dynamic* buffer. When fs_close_custom() is called, the content is 
pushed in the output queue, but it isn't actually sent over the wire.

So is it correct to free the dynamic buffer in fs_close_custom()?