1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel (at) 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 res = 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 } 71
