curl/docs/libcurl/curl_mime_headers.3
Daniel Gustafsson 2df67e93c3 docs: clarify data replacement policy for MIME API
The API documentation for the MIME functions specify that the parts
can be set twice, with the last call winning.  While true, the user
can set the parts n times for n > 2, reword to specify multiple API
calls instead.

Closes: #8860
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2022-05-16 20:32:38 +02:00

67 lines
2.4 KiB
Groff

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.TH curl_mime_headers 3 "22 August 2017" "libcurl 7.56.0" "libcurl Manual"
.SH NAME
curl_mime_headers - set a mime part's custom headers
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_mime_headers(curl_mimepart *part,
struct curl_slist *headers, int take_ownership);
.fi
.SH DESCRIPTION
\fIcurl_mime_headers(3)\fP sets a mime part's custom headers.
\fIpart\fP is the part's handle to assign the custom headers list to.
\fIheaders\fP is the head of a list of custom headers; it may be set to NULL
to remove a previously attached custom header list.
\fItake_ownership\fP: when non-zero, causes the list to be freed upon
replacement or mime structure deletion; in this case the list must not be
freed explicitly.
Setting a part's custom headers list multiple times is valid: only the value
set by the last call is retained.
.SH EXAMPLE
.nf
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Custom-Header: mooo");
/* use these headers, please take ownership */
curl_mime_headers(part, headers, TRUE);
/* pass on this data */
curl_mime_data(part, "12345679", CURL_ZERO_TERMINATED);
/* set name */
curl_mime_name(part, "numbers");
.fi
.SH AVAILABILITY
As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.
.SH RETURN VALUE
CURLE_OK or a CURL error code upon failure.
.SH "SEE ALSO"
.BR curl_mime_addpart "(3)"