[lwip-devel] [patch #9500] Avoid sending Content-Length header if data is not ready yet

[Simon Goldschmidt]

Follow-up Comment #8, patch #9500 (project lwip):

I have understood that by now.

> My suggestion is to postpone the calculation of Content Length 
> header when httpd really needs it, so when the header is really 
> sent, that could be at a later time.

Implementing this would need a greater rework already: the header is sent
directly, even if using delayed read. So currently, content length *is*
"calculated" when it is needed.

That's why I proposed to implement delayed open. You could then even delay
searching for a file name. And of course in your case, you could delay open
until the file size is known.

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