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Annotation of embedaddon/curl/docs/examples/httpcustomheader.c, revision 1.1.1.1

1.1       misho       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: }