Am 31.01.2017 um 16:48 schrieb Viallard Anthony:
On Tue, 31 Jan 2017 15:26:24 +0100
Reindl Harald <[email protected]> wrote:
normally large static files should not make it to the memory at all
https://linux.die.net/man/2/sendfile
Actually, I send the file in a "multipart/form-data" http message
because I need to send other informations at the same time. So, I fill
an evbuffer with differents values and the file separated by a
delimiter. I open the file and I read/write 5KB to the evbuffer.
Therefore, I don't think I use sendfile() and this is why I have this
memory problem. Maybe if I use an other kind of http message instead of
"multipart/form-data", put the values from the http body to the query
string and use the function evbuffer_add_file(), I can hope not having
this issue ?
not sure about the internals and specific case but even if it needs to
create tempfiles you really need to avoid holding the whole file in
memory, that won't scale in most environments not only embedded when you
consider a webserver which has 20 parallel requests to a 500 MB file
which also would mean that these buffers are last very long until the
clients have received and finished the request while other clients still
connect to the machine
Am 31.01.2017 um 14:11 schrieb Ryan Daum:
You could implement range support if your client supports them. I don't
believe there is content-range support built into libevent, but I wrote
my own (can't share, company IP) implementation for libevent. It wasn't
that difficult to write. The RFC is pretty clear.
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