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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/*
* Check for bugs #1303 and #1327: libcurl should never remove DNS entries
* created via CURLOPT_RESOLVE, neither after DNS_CACHE_TIMEOUT elapses
* (test1515) nor a dead connection is detected (test1616).
*/
#include "first.h"
#include "testtrace.h"
#define DNS_TIMEOUT 1L
static CURLcode do_one_request(CURLM *multi, const char *URL,
const char *resolve)
{
CURL *curl;
struct curl_slist *resolve_list = NULL;
int still_running;
CURLcode result = CURLE_OK;
CURLMsg *msg;
int msgs_left;
resolve_list = curl_slist_append(resolve_list, resolve);
easy_init(curl);
easy_setopt(curl, CURLOPT_URL, URL);
easy_setopt(curl, CURLOPT_RESOLVE, resolve_list);
easy_setopt(curl, CURLOPT_DNS_CACHE_TIMEOUT, DNS_TIMEOUT);
debug_config.nohex = TRUE;
debug_config.tracetime = TRUE;
easy_setopt(curl, CURLOPT_DEBUGDATA, &debug_config);
easy_setopt(curl, CURLOPT_DEBUGFUNCTION, libtest_debug_cb);
easy_setopt(curl, CURLOPT_VERBOSE, 1L);
multi_add_handle(multi, curl);
multi_perform(multi, &still_running);
abort_on_test_timeout();
while(still_running) {
struct timeval timeout;
fd_set fdread, fdwrite, fdexcep;
int maxfd = -99;
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
timeout.tv_sec = 1;
timeout.tv_usec = 0;
multi_fdset(multi, &fdread, &fdwrite, &fdexcep, &maxfd);
select_test(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
abort_on_test_timeout();
multi_perform(multi, &still_running);
abort_on_test_timeout();
}
do {
msg = curl_multi_info_read(multi, &msgs_left);
if(msg && msg->msg == CURLMSG_DONE && msg->easy_handle == curl) {
result = msg->data.result;
break;
}
} while(msg);
test_cleanup:
curl_multi_remove_handle(multi, curl);
curl_easy_cleanup(curl);
curl_slist_free_all(resolve_list);
return result;
}
static CURLcode test_lib1515(const char *URL)
{
CURLM *multi = NULL;
CURLcode result = CURLE_OK;
const char *path = URL;
const char *address = libtest_arg2;
const char *port = libtest_arg3;
char dns_entry[256];
int i;
int count = 2;
curl_msnprintf(dns_entry, sizeof(dns_entry), "testserver.example.com:%s:%s",
port, address);
start_test_timing();
global_init(CURL_GLOBAL_ALL);
curl_global_trace("all");
multi_init(multi);
for(i = 1; i <= count; i++) {
char target_url[256];
curl_msnprintf(target_url, sizeof(target_url),
"http://testserver.example.com:%s/%s%04d", port, path, i);
/* second request must succeed like the first one */
result = do_one_request(multi, target_url, dns_entry);
if(result != CURLE_OK) {
curl_mfprintf(stderr, "request %s failed with %d\n", target_url, result);
goto test_cleanup;
}
if(i < count)
curlx_wait_ms((DNS_TIMEOUT + 1) * 1000);
}
test_cleanup:
curl_multi_cleanup(multi);
curl_global_cleanup();
return result;
}
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