quickjs-tart

quickjs-based runtime for wallet-core logic
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multi-formadd.c (3600B)

      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 /*
     30  * Warning: this example uses the deprecated form api. See "multi-post.c"
     31  *          for a similar example using the mime api.
     32  */
     33 
     34 #include <stdio.h>
     35 #include <string.h>
     36 
     37 #include <curl/curl.h>
     38 
     39 int main(void)
     40 {
     41   CURL *curl;
     42 
     43   CURLM *multi_handle;
     44   int still_running = 0;
     45 
     46   struct curl_httppost *formpost = NULL;
     47   struct curl_httppost *lastptr = NULL;
     48   struct curl_slist *headerlist = NULL;
     49   static const char buf[] = "Expect:";
     50 
     51   CURL_IGNORE_DEPRECATION(
     52     /* Fill in the file upload field. This makes libcurl load data from
     53        the given file name when curl_easy_perform() is called. */
     54     curl_formadd(&formpost,
     55                  &lastptr,
     56                  CURLFORM_COPYNAME, "sendfile",
     57                  CURLFORM_FILE, "multi-formadd.c",
     58                  CURLFORM_END);
     59 
     60     /* Fill in the filename field */
     61     curl_formadd(&formpost,
     62                  &lastptr,
     63                  CURLFORM_COPYNAME, "filename",
     64                  CURLFORM_COPYCONTENTS, "multi-formadd.c",
     65                  CURLFORM_END);
     66 
     67     /* Fill in the submit field too, even if this is rarely needed */
     68     curl_formadd(&formpost,
     69                  &lastptr,
     70                  CURLFORM_COPYNAME, "submit",
     71                  CURLFORM_COPYCONTENTS, "send",
     72                  CURLFORM_END);
     73   )
     74 
     75   curl = curl_easy_init();
     76   multi_handle = curl_multi_init();
     77 
     78   /* initialize custom header list (stating that Expect: 100-continue is not
     79      wanted */
     80   headerlist = curl_slist_append(headerlist, buf);
     81   if(curl && multi_handle) {
     82 
     83     /* what URL that receives this POST */
     84     curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/upload.cgi");
     85     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
     86 
     87     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
     88     CURL_IGNORE_DEPRECATION(
     89       curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
     90     )
     91 
     92     curl_multi_add_handle(multi_handle, curl);
     93 
     94     do {
     95       CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
     96 
     97       if(still_running)
     98         /* wait for activity, timeout or "nothing" */
     99         mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
    100 
    101       if(mc)
    102         break;
    103 
    104     } while(still_running);
    105 
    106     curl_multi_cleanup(multi_handle);
    107 
    108     /* always cleanup */
    109     curl_easy_cleanup(curl);
    110 
    111     CURL_IGNORE_DEPRECATION(
    112       /* then cleanup the formpost chain */
    113       curl_formfree(formpost);
    114     )
    115 
    116     /* free slist */
    117     curl_slist_free_all(headerlist);
    118   }
    119   return 0;
    120 }