On 8/13/2017 9:34 PM, Daniel Stenberg wrote:
libcurl delivers the data to the callback or reads it with a callback
in a streaming fashion and will not keep the entire file in memory
either on upload nor download. The size of the internal buffers for
download and uploads is 16KB by default but can in fact be somewhat
controlled with CURLOPT_BUFFERSIZE in modern libcurl versions.
Thanks Daniel. Now its very clear. Also I missed the checking of whether
the file is already opened or not.
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