Hi,
the documentation for CURLOPT_SEEKFUNCTION should mention that the seek function is also needed if an HTTP server closes an existing connection while curl is trying to reuse it.
I have attached a patch. Feel free to improve it :-) Regards, Michael
diff --git a/docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3 b/docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3 index 8747a17..94a52d7 100644 --- a/docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3 +++ b/docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3 @@ -43,8 +43,11 @@ shown above. This function gets called by libcurl to seek to a certain position in the input stream and can be 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 +function/callback). It is also called to rewind a stream when data has already +been sent to the server and needs to be sent again. This may happen when doing +a HTTP PUT or POST with a multi-pass authentication method, or when an +existing HTTP connection is reused too late and the server closes the +connection. The function shall work like fseek(3) or lseek(3) and it gets SEEK_SET, SEEK_CUR or SEEK_END as argument for \fIorigin\fP, although libcurl currently only passes SEEK_SET.
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