1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24 /* <DESC>
25 * using the multi interface to do a multipart formpost without blocking
26 * </DESC>
27 */
28
29 #include <stdio.h>
30 #include <string.h>
31
32 #include <curl/curl.h>
33
main(void)34 int main(void)
35 {
36 CURL *curl;
37
38 CURLM *multi_handle;
39 int still_running = 0;
40
41 curl_mime *form = NULL;
42 curl_mimepart *field = NULL;
43 struct curl_slist *headerlist = NULL;
44 static const char buf[] = "Expect:";
45
46 curl = curl_easy_init();
47 multi_handle = curl_multi_init();
48
49 if(curl && multi_handle) {
50 /* Create the form */
51 form = curl_mime_init(curl);
52
53 /* Fill in the file upload field */
54 field = curl_mime_addpart(form);
55 curl_mime_name(field, "sendfile");
56 curl_mime_filedata(field, "multi-post.c");
57
58 /* Fill in the filename field */
59 field = curl_mime_addpart(form);
60 curl_mime_name(field, "filename");
61 curl_mime_data(field, "multi-post.c", CURL_ZERO_TERMINATED);
62
63 /* Fill in the submit field too, even if this is rarely needed */
64 field = curl_mime_addpart(form);
65 curl_mime_name(field, "submit");
66 curl_mime_data(field, "send", CURL_ZERO_TERMINATED);
67
68 /* initialize custom header list (stating that Expect: 100-continue is not
69 wanted */
70 headerlist = curl_slist_append(headerlist, buf);
71
72 /* what URL that receives this POST */
73 curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/upload.cgi");
74 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
75
76 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
77 curl_easy_setopt(curl, CURLOPT_MIMEPOST, form);
78
79 curl_multi_add_handle(multi_handle, curl);
80
81 do {
82 CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
83
84 if(still_running)
85 /* wait for activity, timeout or "nothing" */
86 mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
87
88 if(mc)
89 break;
90 } while(still_running);
91
92 curl_multi_cleanup(multi_handle);
93
94 /* always cleanup */
95 curl_easy_cleanup(curl);
96
97 /* then cleanup the form */
98 curl_mime_free(form);
99
100 /* free slist */
101 curl_slist_free_all(headerlist);
102 }
103 return 0;
104 }
105
