File:  [ELWIX - Embedded LightWeight unIX -] / embedaddon / curl / docs / examples / httpcustomheader.c
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Wed Jun 3 10:01:15 2020 UTC (4 years, 10 months ago) by misho
Branches: curl, MAIN
CVS tags: v7_70_0p4, HEAD
curl

    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2019, 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.haxx.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:  ***************************************************************************/
   22: /* <DESC>
   23:  * HTTP request with custom modified, removed and added headers
   24:  * </DESC>
   25:  */
   26: #include <stdio.h>
   27: #include <curl/curl.h>
   28: 
   29: int main(void)
   30: {
   31:   CURL *curl;
   32:   CURLcode res;
   33: 
   34:   curl = curl_easy_init();
   35:   if(curl) {
   36:     struct curl_slist *chunk = NULL;
   37: 
   38:     /* Remove a header curl would otherwise add by itself */
   39:     chunk = curl_slist_append(chunk, "Accept:");
   40: 
   41:     /* Add a custom header */
   42:     chunk = curl_slist_append(chunk, "Another: yes");
   43: 
   44:     /* Modify a header curl otherwise adds differently */
   45:     chunk = curl_slist_append(chunk, "Host: example.com");
   46: 
   47:     /* Add a header with "blank" contents to the right of the colon. Note that
   48:        we're then using a semicolon in the string we pass to curl! */
   49:     chunk = curl_slist_append(chunk, "X-silly-header;");
   50: 
   51:     /* set our custom set of headers */
   52:     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
   53: 
   54:     curl_easy_setopt(curl, CURLOPT_URL, "localhost");
   55:     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
   56: 
   57:     res = curl_easy_perform(curl);
   58:     /* Check for errors */
   59:     if(res != CURLE_OK)
   60:       fprintf(stderr, "curl_easy_perform() failed: %s\n",
   61:               curl_easy_strerror(res));
   62: 
   63:     /* always cleanup */
   64:     curl_easy_cleanup(curl);
   65: 
   66:     /* free the custom headers */
   67:     curl_slist_free_all(chunk);
   68:   }
   69:   return 0;
   70: }

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