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 25/* <DESC> 26 * POP3 example showing how to retrieve only the headers of an email 27 * </DESC> 28 */ 29 30#include <stdio.h> 31#include <curl/curl.h> 32 33/* This is a simple example showing how to retrieve only the headers of a mail 34 * using libcurl's POP3 capabilities. 35 * 36 * Note that this example requires libcurl 7.26.0 or above. 37 */ 38 39int main(void) 40{ 41 CURL *curl; 42 CURLcode res = CURLE_OK; 43 44 curl = curl_easy_init(); 45 if(curl) { 46 /* Set username and password */ 47 curl_easy_setopt(curl, CURLOPT_USERNAME, "user"); 48 curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret"); 49 50 /* This is just the server URL */ 51 curl_easy_setopt(curl, CURLOPT_URL, "pop3://pop.example.com"); 52 53 /* Set the TOP command for message 1 to only include the headers */ 54 curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "TOP 1 0"); 55 56 /* Perform the custom request */ 57 res = curl_easy_perform(curl); 58 59 /* Check for errors */ 60 if(res != CURLE_OK) 61 fprintf(stderr, "curl_easy_perform() failed: %s\n", 62 curl_easy_strerror(res)); 63 64 /* Always cleanup */ 65 curl_easy_cleanup(curl); 66 } 67 68 return (int)res; 69} 70