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curl_easy_setopt.3: slight clarification of SEEKFUNCTION

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Daniel Stenberg 2013-09-30 14:58:06 +02:00
parent ca995010d0
commit c8b05b809e
1 changed files with 3 additions and 3 deletions
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docs/libcurl/curl_easy_setopt.3
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@ -260,9 +260,9 @@ used to fast forward a file in a resumed upload (instead of reading all
uploaded bytes with the normal read function/callback). It is also called to
rewind a stream when doing a HTTP PUT or POST with a multi-pass authentication
method. The function shall work like "fseek" or "lseek" and accepted SEEK_SET,
SEEK_CUR and SEEK_END as argument for origin, although (in 7.18.0) libcurl
only passes SEEK_SET. The callback must return 0 (CURL_SEEKFUNC_OK) on
success, 1 (CURL_SEEKFUNC_FAIL) to cause the upload operation to fail or 2
SEEK_CUR and SEEK_END as argument for origin, although libcurl currently only
passes SEEK_SET. The callback must return 0 (CURL_SEEKFUNC_OK) on success, 1
(CURL_SEEKFUNC_FAIL) to cause the upload operation to fail or 2
(CURL_SEEKFUNC_CANTSEEK) to indicate that while the seek failed, libcurl is
free to work around the problem if possible. The latter can sometimes be done
by instead reading from the input or similar.