Interesting. I seem to have resolved this case for now.
For anyone having the same issue as me, the way I got around this was by continuously callingthe curl_easy_send() until the last byte. For each call, I added however much I was able to send in the previouscall to the FILE stream pointer so it would start off sending the next buffer after the last sent byte.

> Date: Mon, 26 Oct 2009 15:59:22 +0100
> From: daniel_at_haxx.se
> To: curl-library_at_cool.haxx.se
> Subject: Re: curl_easy_send() maximum buffer size?
>
> On Fri, 23 Oct 2009, Yuichi Kuroda wrote:
>
> > Hi I'm able to transfer small binary buffers (60kb) with curl_easy_send()
> > but when I try to transfer a buffer of about 14 megabytes, the number of
> > sent bytes gets returned as 12kb. Is there a limit that this function can
> > take?
>
> No. It depends only on your system's and the underlying libraries'
> limitations.
>
> --
>
> / daniel.haxx.se
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Received on 2009-10-28