curl_easy_setopt.3: prefer XFERINFOFUNCTION to PROGRESSFUNCTION

This commit is contained in:
Daniel Stenberg 2014-05-16 08:51:38 +02:00
parent 68f0166a92
commit 077366d0c6

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@ -347,6 +347,8 @@ Pass a pointer to a function that matches the following prototype:
\fBint function(void *clientp, double dltotal, double dlnow, double ultotal,
double ulnow);\fP
We encourage users to use \fICURLOPT_XFERINFOFUNCTION\fP instead, if you can.
This function gets called by libcurl instead of its internal equivalent with a
frequent interval. While data is being transferred it will be called very
frequently, and during slow periods like when nothing is being transferred it