lib1515.c (3951B)
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 /* 26 * Check for bugs #1303 and #1327: libcurl should never remove DNS entries 27 * created via CURLOPT_RESOLVE, neither after DNS_CACHE_TIMEOUT elapses 28 * (test1515) nor a dead connection is detected (test1616). 29 */ 30 31 #include "first.h" 32 33 #include "testtrace.h" 34 #include "memdebug.h" 35 36 #define DNS_TIMEOUT 1L 37 38 static CURLcode do_one_request(CURLM *m, char *URL, char *resolve) 39 { 40 CURL *curls; 41 struct curl_slist *resolve_list = NULL; 42 int still_running; 43 CURLcode res = CURLE_OK; 44 CURLMsg *msg; 45 int msgs_left; 46 47 resolve_list = curl_slist_append(resolve_list, resolve); 48 49 easy_init(curls); 50 51 easy_setopt(curls, CURLOPT_URL, URL); 52 easy_setopt(curls, CURLOPT_RESOLVE, resolve_list); 53 easy_setopt(curls, CURLOPT_DNS_CACHE_TIMEOUT, DNS_TIMEOUT); 54 55 libtest_debug_config.nohex = 1; 56 libtest_debug_config.tracetime = 1; 57 easy_setopt(curls, CURLOPT_DEBUGDATA, &libtest_debug_config); 58 easy_setopt(curls, CURLOPT_DEBUGFUNCTION, libtest_debug_cb); 59 easy_setopt(curls, CURLOPT_VERBOSE, 1L); 60 61 multi_add_handle(m, curls); 62 multi_perform(m, &still_running); 63 64 abort_on_test_timeout(); 65 66 while(still_running) { 67 struct timeval timeout; 68 fd_set fdread, fdwrite, fdexcep; 69 int maxfd = -99; 70 71 FD_ZERO(&fdread); 72 FD_ZERO(&fdwrite); 73 FD_ZERO(&fdexcep); 74 timeout.tv_sec = 1; 75 timeout.tv_usec = 0; 76 77 multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd); 78 select_test(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout); 79 80 abort_on_test_timeout(); 81 multi_perform(m, &still_running); 82 83 abort_on_test_timeout(); 84 } 85 86 do { 87 msg = curl_multi_info_read(m, &msgs_left); 88 if(msg && msg->msg == CURLMSG_DONE && msg->easy_handle == curls) { 89 res = msg->data.result; 90 break; 91 } 92 } while(msg); 93 94 test_cleanup: 95 96 curl_multi_remove_handle(m, curls); 97 curl_easy_cleanup(curls); 98 curl_slist_free_all(resolve_list); 99 100 return res; 101 } 102 103 static CURLcode test_lib1515(char *URL) 104 { 105 CURLM *multi = NULL; 106 CURLcode res = CURLE_OK; 107 char *address = libtest_arg2; 108 char *port = libtest_arg3; 109 char *path = URL; 110 char dns_entry[256]; 111 int i; 112 int count = 2; 113 114 curl_msnprintf(dns_entry, sizeof(dns_entry), "testserver.example.com:%s:%s", 115 port, address); 116 117 start_test_timing(); 118 119 global_init(CURL_GLOBAL_ALL); 120 curl_global_trace("all"); 121 multi_init(multi); 122 123 for(i = 1; i <= count; i++) { 124 char target_url[256]; 125 curl_msnprintf(target_url, sizeof(target_url), 126 "http://testserver.example.com:%s/%s%04d", port, path, i); 127 128 /* second request must succeed like the first one */ 129 res = do_one_request(multi, target_url, dns_entry); 130 if(res != CURLE_OK) { 131 curl_mfprintf(stderr, "request %s failed with %d\n", target_url, res); 132 goto test_cleanup; 133 } 134 135 if(i < count) 136 curlx_wait_ms((DNS_TIMEOUT + 1) * 1000); 137 } 138 139 test_cleanup: 140 141 curl_multi_cleanup(multi); 142 curl_global_cleanup(); 143 144 return res; 145 }