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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>
*/
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <curl/curl.h>
int main(void)
{
CURL *curl;
CURLM *multi_handle;
int still_running = 0;
curl_mime *form = NULL;
curl_mimepart *field = NULL;
struct curl_slist *headerlist = NULL;
static const char buf[] = "Expect:";
curl = curl_easy_init();
multi_handle = curl_multi_init();
if(curl && multi_handle) {
/* Create the form */
form = curl_mime_init(curl);
/* Fill in the file upload field */
field = curl_mime_addpart(form);
curl_mime_name(field, "sendfile");
curl_mime_filedata(field, "multi-post.c");
/* Fill in the filename field */
field = curl_mime_addpart(form);
curl_mime_name(field, "filename");
curl_mime_data(field, "multi-post.c", CURL_ZERO_TERMINATED);
/* Fill in the submit field too, even if this is rarely needed */
field = curl_mime_addpart(form);
curl_mime_name(field, "submit");
curl_mime_data(field, "send", CURL_ZERO_TERMINATED);
/* initialize custom header list (stating that Expect: 100-continue is not
wanted */
headerlist = curl_slist_append(headerlist, buf);
/* 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_easy_setopt(curl, CURLOPT_MIMEPOST, form);
curl_multi_add_handle(multi_handle, curl);
do {
CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
if(still_running)
/* wait for activity, timeout or "nothing" */
mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
if(mc)
break;
} while(still_running);
curl_multi_cleanup(multi_handle);
/* always cleanup */
curl_easy_cleanup(curl);
/* then cleanup the form */
curl_mime_free(form);
/* free slist */
curl_slist_free_all(headerlist);
}
return 0;
}
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