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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
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      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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 #include "test.h"
     23 
     24 #include <fcntl.h>
     25 
     26 #include "testutil.h"
     27 #include "warnless.h"
     28 #include "memdebug.h"
     29 
     30 #define TEST_HANG_TIMEOUT 30 * 1000
     31 
     32 /* 500 milliseconds allowed. An extreme number but lets be really conservative
     33    to allow old and slow machines to run this test too */
     34 #define MAX_BLOCKED_TIME_MS 500
     35 
     36 int test(char *URL)
     37 {
     38   CURL *handle = NULL;
     39   CURLM *mhandle = NULL;
     40   int res = 0;
     41   int still_running = 0;
     42 
     43   start_test_timing();
     44 
     45   global_init(CURL_GLOBAL_ALL);
     46 
     47   easy_init(handle);
     48 
     49   easy_setopt(handle, CURLOPT_URL, URL);
     50   easy_setopt(handle, CURLOPT_VERBOSE, 1L);
     51 
     52   multi_init(mhandle);
     53 
     54   multi_add_handle(mhandle, handle);
     55 
     56   multi_perform(mhandle, &still_running);
     57 
     58   abort_on_test_timeout();
     59 
     60   while(still_running) {
     61     struct timeval timeout;
     62     fd_set fdread;
     63     fd_set fdwrite;
     64     fd_set fdexcep;
     65     int maxfd = -99;
     66     struct timeval before;
     67     struct timeval after;
     68     long e;
     69 
     70     timeout.tv_sec = 0;
     71     timeout.tv_usec = 100000L; /* 100 ms */
     72 
     73     FD_ZERO(&fdread);
     74     FD_ZERO(&fdwrite);
     75     FD_ZERO(&fdexcep);
     76 
     77     multi_fdset(mhandle, &fdread, &fdwrite, &fdexcep, &maxfd);
     78 
     79     /* At this point, maxfd is guaranteed to be greater or equal than -1. */
     80 
     81     select_test(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
     82 
     83     abort_on_test_timeout();
     84 
     85     fprintf(stderr, "ping\n");
     86     before = tutil_tvnow();
     87 
     88     multi_perform(mhandle, &still_running);
     89 
     90     abort_on_test_timeout();
     91 
     92     after = tutil_tvnow();
     93     e = tutil_tvdiff(after, before);
     94     fprintf(stderr, "pong = %ld\n", e);
     95 
     96     if(e > MAX_BLOCKED_TIME_MS) {
     97       res = 100;
     98       break;
     99     }
    100   }
    101 
    102 test_cleanup:
    103 
    104   /* undocumented cleanup sequence - type UA */
    105 
    106   curl_multi_cleanup(mhandle);
    107   curl_easy_cleanup(handle);
    108   curl_global_cleanup();
    109 
    110   return res;
    111 }
    112