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71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/* <DESC>
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* Use CURLOPT_CONNECT_TO to connect to "wrong" hostname
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* </DESC>
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*/
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#include <stdio.h>
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#include <curl/curl.h>
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int main(void)
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{
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CURL *curl;
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CURLcode res = CURLE_OK;
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/*
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Each single string should be written using the format
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HOST:PORT:CONNECT-TO-HOST:CONNECT-TO-PORT where HOST is the host of the
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request, PORT is the port of the request, CONNECT-TO-HOST is the host name
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to connect to, and CONNECT-TO-PORT is the port to connect to.
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*/
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/* instead of curl.se:443, it resolves and uses example.com:443 but in other
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aspects work as if it still is curl.se */
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struct curl_slist *host = curl_slist_append(NULL,
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"curl.se:443:example.com:443");
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curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_CONNECT_TO, host);
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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curl_easy_setopt(curl, CURLOPT_URL, "https://curl.se/");
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/* since this connects to the wrong host, checking the host name in the
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server certificate fails, so unless we disable the check libcurl
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returns CURLE_PEER_FAILED_VERIFICATION */
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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/* Letting the wrong host name in the certificate be okay, the transfer
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goes through but (most likely) causes a 404 or similar because it sends
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an unknown name in the Host: header field */
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res = curl_easy_perform(curl);
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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curl_slist_free_all(host);
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return (int)res;
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}
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