1--- 2c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. 3SPDX-License-Identifier: curl 4Title: curl_mime_headers 5Section: 3 6Source: libcurl 7See-also: 8 - curl_mime_addpart (3) 9 - curl_mime_name (3) 10--- 11 12# NAME 13 14curl_mime_headers - set a mime part's custom headers 15 16# SYNOPSIS 17 18~~~c 19#include <curl/curl.h> 20 21CURLcode curl_mime_headers(curl_mimepart *part, 22 struct curl_slist *headers, int take_ownership); 23~~~ 24 25# DESCRIPTION 26 27curl_mime_headers(3) sets a mime part's custom headers. 28 29*part* is the part's handle to assign the custom headers list to. 30 31*headers* is the head of a list of custom headers; it may be set to NULL 32to remove a previously attached custom header list. 33 34*take_ownership*: when non-zero, causes the list to be freed upon 35replacement or mime structure deletion; in this case the list must not be 36freed explicitly. 37 38Setting a part's custom headers list multiple times is valid: only the value 39set by the last call is retained. 40 41# EXAMPLE 42 43~~~c 44int main(void) 45{ 46 struct curl_slist *headers = NULL; 47 CURL *easy = curl_easy_init(); 48 curl_mime *mime; 49 curl_mimepart *part; 50 51 headers = curl_slist_append(headers, "Custom-Header: mooo"); 52 53 mime = curl_mime_init(easy); 54 part = curl_mime_addpart(mime); 55 56 /* use these headers in the part, takes ownership */ 57 curl_mime_headers(part, headers, 1); 58 59 /* pass on this data */ 60 curl_mime_data(part, "12345679", CURL_ZERO_TERMINATED); 61 62 /* set name */ 63 curl_mime_name(part, "numbers"); 64 65 /* Post and send it. */ 66 curl_easy_setopt(easy, CURLOPT_MIMEPOST, mime); 67 curl_easy_setopt(easy, CURLOPT_URL, "https://example.com"); 68 curl_easy_perform(easy); 69} 70~~~ 71 72# AVAILABILITY 73 74As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0. 75 76# RETURN VALUE 77 78CURLE_OK or a CURL error code upon failure. 79