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Commit Graph

8 Commits

Author SHA1 Message Date
Daniel Stenberg
946a71a14f
CURLOPT_WRITEFUNCTION.3: add inline example and new see-also
Closes #5192
2020-04-07 00:07:49 +02:00
Daniel Stenberg
ae7a09db20
CURLOPT_WRITEFUNCTION.3: spell out that it gets called many times 2018-11-23 16:55:33 +01:00
Christopher Head
9526cbe6bc
docs/CURLOPT_WRITEFUNCTION: size is always 1
For compatibility with `fwrite`, the `CURLOPT_WRITEFUNCTION` callback is
passed two `size_t` parameters which, when multiplied, designate the
number of bytes of data passed in. In practice, CURL always sets the
first parameter (`size`) to 1.

This practice is also enshrined in documentation and cannot be changed
in future. The documentation states that the default callback is
`fwrite`, which means `fwrite` must be a suitable function for this
purpose. However, the documentation also states that the callback must
return the number of *bytes* it successfully handled, whereas ISO C
`fwrite` returns the number of items (each of size `size`) which it
wrote. The only way these numbers can be equal is if `size` is 1.

Since `size` is 1 and can never be changed in future anyway, document
that fact explicitly and let users rely on it.

Closes #2787
2018-07-26 16:24:43 +02:00
Daniel Stenberg
4af40b3646 URLs: change all http:// URLs to https:// 2016-02-03 00:19:02 +01:00
Daniel Stenberg
bb71f1aa25 CURLOPT_WRITEFUNCTION: changed the order of some sentences
First explain the data then describe what the callback should return.
2014-06-17 00:02:22 +02:00
Daniel Stenberg
b203377df7 CURLOPT_WRITEFUNCTION.3: improved language
Suggestions-by: Jeff Pohlmeyer
2014-06-16 23:55:30 +02:00
Daniel Stenberg
a5e498b543 CURLOPT_WRITEFUNCTION: add RETURN VALUE and DEFAULT sections 2014-06-16 22:01:08 +02:00
Daniel Stenberg
e810ddbb70 CURLOPT_WRITEFUNCTION: initial man page 2014-06-16 20:27:37 +02:00