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CURLOPT_WRITEFUNCTION.md: mention redirects

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Reported-by: BazaarAcc32 on github
Fixes #21945
Closes #21950
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Daniel Stenberg 2026-06-10 14:01:11 +02:00
parent a6971ce90a
commit 74096802ee
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9
docs/libcurl/opts/CURLOPT_WRITEFUNCTION.md
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@ -47,6 +47,11 @@ defined in the curl.h header file: *CURL_MAX_WRITE_SIZE* (the usual default is
the write callback, you can get up to *CURL_MAX_HTTP_HEADER* bytes of header
data passed into it. This usually means 100K.
The CURLOPT_WRITEFUNCTION(3) callback receives the final response payload.
When CURLOPT_FOLLOWLOCATION(3) is enabled, libcurl automatically handles
intermediate 3xx redirects, meaning their HTTP bodies are skipped and not
passed to this callback.
This function may be called with zero bytes data if the transferred file is
empty.
@ -60,8 +65,8 @@ aborted and the libcurl function used returns *CURLE_WRITE_ERROR*.
You can also abort the transfer by returning CURL_WRITEFUNC_ERROR (added in
7.87.0), which makes *CURLE_WRITE_ERROR* get returned.
If the callback function returns CURL_WRITEFUNC_PAUSE it pauses this
transfer. See curl_easy_pause(3) for further details.
If the callback function returns CURL_WRITEFUNC_PAUSE it pauses this transfer.
See curl_easy_pause(3) for further details.
Set this option to NULL to get the internal default function used instead of
your callback. The internal default function writes the data to the FILE *