Annotation of embedaddon/curl/docs/examples/smtp-vrfy.c, revision 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:
! 23: /* <DESC>
! 24: * SMTP example showing how to verify an e-mail address
! 25: * </DESC>
! 26: */
! 27:
! 28: #include <stdio.h>
! 29: #include <string.h>
! 30: #include <curl/curl.h>
! 31:
! 32: /* This is a simple example showing how to verify an e-mail address from an
! 33: * SMTP server.
! 34: *
! 35: * Notes:
! 36: *
! 37: * 1) This example requires libcurl 7.34.0 or above.
! 38: * 2) Not all email servers support this command and even if your email server
! 39: * does support it, it may respond with a 252 response code even though the
! 40: * address doesn't exist.
! 41: */
! 42:
! 43: int main(void)
! 44: {
! 45: CURL *curl;
! 46: CURLcode res;
! 47: struct curl_slist *recipients = NULL;
! 48:
! 49: curl = curl_easy_init();
! 50: if(curl) {
! 51: /* This is the URL for your mailserver */
! 52: curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com");
! 53:
! 54: /* Note that the CURLOPT_MAIL_RCPT takes a list, not a char array */
! 55: recipients = curl_slist_append(recipients, "<recipient@example.com>");
! 56: curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
! 57:
! 58: /* Perform the VRFY */
! 59: res = curl_easy_perform(curl);
! 60:
! 61: /* Check for errors */
! 62: if(res != CURLE_OK)
! 63: fprintf(stderr, "curl_easy_perform() failed: %s\n",
! 64: curl_easy_strerror(res));
! 65:
! 66: /* Free the list of recipients */
! 67: curl_slist_free_all(recipients);
! 68:
! 69: /* Curl won't send the QUIT command until you call cleanup, so you should
! 70: * be able to re-use this connection for additional requests. It may not be
! 71: * a good idea to keep the connection open for a very long time though
! 72: * (more than a few minutes may result in the server timing out the
! 73: * connection) and you do want to clean up in the end.
! 74: */
! 75: curl_easy_cleanup(curl);
! 76: }
! 77:
! 78: return 0;
! 79: }
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