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Re: length/size of data received/written with CURLOPT_WRITEFUNCTION

From: Ray Satiro via curl-library <>
Date: Thu, 28 Mar 2024 15:26:14 -0400

On 3/28/2024 2:24 PM, R C via curl-library wrote:
> How can one 'find' the total number of bytes reveived and written 
> with a callback_write function with CURLOPT_WRITEFUNCTION

Keep track of it yourself by using CURLOPT_WRITEDATA to set the user
pointer. See the CURLOPT_WRITEFUNCTION example [1]. There is also
CURLINFO_SIZE_DOWNLOAD_T [2] which is usually the same but not always,
since it's used for statistics and counts body bytes that in certain
unusual situations must be ignored and are not passed to the write callback.


Received on 2024-03-28