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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/* <DESC>
* using the multi interface to do a multipart formpost without blocking
* </DESC>
*/
/*
* Warning: this example uses the deprecated form API. See "multi-post.c"
* for a similar example using the mime API.
*/
#include <stdio.h>
#include <string.h>
#include <curl/curl.h>
int main(void)
{
CURL *curl;
struct curl_httppost *formpost = NULL;
struct curl_httppost *lastptr = NULL;
struct curl_slist *headerlist = NULL;
static const char buf[] = "Expect:";
CURLcode result = curl_global_init(CURL_GLOBAL_ALL);
if(result)
return (int)result;
CURL_IGNORE_DEPRECATION(
/* Fill in the file upload field. This makes libcurl load data from
the given filename when curl_easy_perform() is called. */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "sendfile",
CURLFORM_FILE, "multi-formadd.c",
CURLFORM_END);
/* Fill in the filename field */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "filename",
CURLFORM_COPYCONTENTS, "multi-formadd.c",
CURLFORM_END);
/* Fill in the submit field too, even if this is rarely needed */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "submit",
CURLFORM_COPYCONTENTS, "send",
CURLFORM_END);
)
/* initialize custom header list (stating that Expect: 100-continue is not
wanted */
headerlist = curl_slist_append(headerlist, buf);
curl = curl_easy_init();
if(curl) {
CURLM *multi;
multi = curl_multi_init();
if(multi) {
int still_running = 0;
/* what URL that receives this POST */
curl_easy_setopt(curl, CURLOPT_URL,
"https://www.example.com/upload.cgi");
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
CURL_IGNORE_DEPRECATION(
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
)
curl_multi_add_handle(multi, curl);
do {
CURLMcode mresult = curl_multi_perform(multi, &still_running);
if(still_running)
/* wait for activity, timeout or "nothing" */
mresult = curl_multi_poll(multi, NULL, 0, 1000, NULL);
if(mresult)
break;
} while(still_running);
curl_multi_cleanup(multi);
}
/* always cleanup */
curl_easy_cleanup(curl);
}
CURL_IGNORE_DEPRECATION(
/* then cleanup the formpost chain */
curl_formfree(formpost);
)
/* free slist */
curl_slist_free_all(headerlist);
curl_global_cleanup();
return 0;
}
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