quickjs-tart

quickjs-based runtime for wallet-core logic
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threaded-ssl.c (3266B)

      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 /* <DESC>
     25  * Show the required mutex callback setups for GnuTLS and OpenSSL when using
     26  * libcurl multi-threaded.
     27  * </DESC>
     28  */
     29 /* A multi-threaded example that uses pthreads and fetches 4 remote files at
     30  * once over HTTPS.
     31  *
     32  * Recent versions of OpenSSL and GnuTLS are thread safe by design, assuming
     33  * support for the underlying OS threading API is built-in. Older revisions
     34  * of this example demonstrated locking callbacks for the SSL library, which
     35  * are no longer necessary. An older revision with callbacks can be found at
     36  * https://github.com/curl/curl/blob/curl-7_88_1/docs/examples/threaded-ssl.c
     37  */
     38 
     39 #define USE_OPENSSL /* or USE_GNUTLS accordingly */
     40 
     41 #include <stdio.h>
     42 #include <pthread.h>
     43 #include <curl/curl.h>
     44 
     45 #define NUMT 4
     46 
     47 /* List of URLs to fetch.*/
     48 static const char * const urls[]= {
     49   "https://www.example.com/",
     50   "https://www2.example.com/",
     51   "https://www3.example.com/",
     52   "https://www4.example.com/",
     53 };
     54 
     55 static void *pull_one_url(void *url)
     56 {
     57   CURL *curl;
     58 
     59   curl = curl_easy_init();
     60   curl_easy_setopt(curl, CURLOPT_URL, url);
     61   /* this example does not verify the server's certificate, which means we
     62      might be downloading stuff from an impostor */
     63   curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
     64   curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
     65   curl_easy_perform(curl); /* ignores error */
     66   curl_easy_cleanup(curl);
     67 
     68   return NULL;
     69 }
     70 
     71 int main(int argc, char **argv)
     72 {
     73   pthread_t tid[NUMT];
     74   int i;
     75   (void)argc; /* we do not use any arguments in this example */
     76   (void)argv;
     77 
     78   /* Must initialize libcurl before any threads are started */
     79   curl_global_init(CURL_GLOBAL_ALL);
     80 
     81   for(i = 0; i < NUMT; i++) {
     82     int error = pthread_create(&tid[i],
     83                                NULL, /* default attributes please */
     84                                pull_one_url,
     85                                (void *)urls[i]);
     86     if(0 != error)
     87       fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
     88     else
     89       fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]);
     90   }
     91 
     92   /* now wait for all threads to terminate */
     93   for(i = 0; i < NUMT; i++) {
     94     pthread_join(tid[i], NULL);
     95     fprintf(stderr, "Thread %d terminated\n", i);
     96   }
     97 
     98   return 0;
     99 }