quickjs-tart

quickjs-based runtime for wallet-core logic
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headerapi.c (2582B)

      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  * Extract headers post transfer with the header API
     26  * </DESC>
     27  */
     28 #include <stdio.h>
     29 #include <curl/curl.h>
     30 
     31 static size_t write_cb(char *data, size_t n, size_t l, void *userp)
     32 {
     33   /* take care of the data here, ignored in this example */
     34   (void)data;
     35   (void)userp;
     36   return n*l;
     37 }
     38 
     39 int main(void)
     40 {
     41   CURL *curl;
     42 
     43   curl = curl_easy_init();
     44   if(curl) {
     45     CURLcode res;
     46     struct curl_header *header;
     47     curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
     48     /* example.com is redirected, so we tell libcurl to follow redirection */
     49     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
     50 
     51     /* this example just ignores the content */
     52     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
     53 
     54     /* Perform the request, res gets the return code */
     55     res = curl_easy_perform(curl);
     56     /* Check for errors */
     57     if(res != CURLE_OK)
     58       fprintf(stderr, "curl_easy_perform() failed: %s\n",
     59               curl_easy_strerror(res));
     60 
     61     if(CURLHE_OK == curl_easy_header(curl, "Content-Type", 0, CURLH_HEADER,
     62                                      -1, &header))
     63       printf("Got content-type: %s\n", header->value);
     64 
     65     printf("All server headers:\n");
     66     {
     67       struct curl_header *h;
     68       struct curl_header *prev = NULL;
     69       do {
     70         h = curl_easy_nextheader(curl, CURLH_HEADER, -1, prev);
     71         if(h)
     72           printf(" %s: %s (%u)\n", h->name, h->value, (int)h->amount);
     73         prev = h;
     74       } while(h);
     75 
     76     }
     77     /* always cleanup */
     78     curl_easy_cleanup(curl);
     79   }
     80   return 0;
     81 }