From 367b78473897b6eb72593cd55191077951a69487 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Fri, 29 Aug 2014 08:10:38 +0200 Subject: curl_formadd.3: setting CURLFORM_CONTENTSLENGTH 0 zero means strlen --- docs/libcurl/curl_formadd.3 | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/docs/libcurl/curl_formadd.3 b/docs/libcurl/curl_formadd.3 index b27e61ddf..3e48149ef 100644 --- a/docs/libcurl/curl_formadd.3 +++ b/docs/libcurl/curl_formadd.3 @@ -86,6 +86,10 @@ you must set its length with \fBCURLFORM_CONTENTSLENGTH\fP. .IP CURLFORM_CONTENTSLENGTH followed by a long giving the length of the contents. Note that for \fICURLFORM_STREAM\fP contents, this option is mandatory. + +If you pass a 0 (zero) for this option, libcurl will instead do a strlen() on +the contents to figure out the size. If you really want to send a zero byte +content then you must make sure strlen() on the data pointer returns zero. .IP CURLFORM_FILECONTENT followed by a filename, causes that file to be read and its contents used as data in this part. This part does \fInot\fP automatically become a file -- cgit v1.2.3