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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, 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 http://curl.haxx.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.
*
***************************************************************************/
#include "test.h"
#include <fcntl.h>
#include "testutil.h"
#include "warnless.h"
#include "memdebug.h"
#define TEST_HANG_TIMEOUT 30 * 1000
/* 500 milliseconds allowed. An extreme number but lets be really conservative
to allow old and slow machines to run this test too */
#define MAX_BLOCKED_TIME_US 500000
/* return the number of microseconds between two time stamps */
static int elapsed(struct timeval *before,
struct timeval *after)
{
ssize_t result;
result = (after->tv_sec - before->tv_sec) * 1000000 +
after->tv_usec - before->tv_usec;
if (result < 0)
result = 0;
return curlx_sztosi(result);
}
int test(char *URL)
{
CURL *handle = NULL;
CURLM *mhandle = NULL;
int res = 0;
int still_running = 0;
start_test_timing();
global_init(CURL_GLOBAL_ALL);
easy_init(handle);
easy_setopt(handle, CURLOPT_URL, URL);
easy_setopt(handle, CURLOPT_VERBOSE, 1L);
multi_init(mhandle);
multi_add_handle(mhandle, handle);
multi_perform(mhandle, &still_running);
abort_on_test_timeout();
while(still_running) {
struct timeval timeout;
fd_set fdread;
fd_set fdwrite;
fd_set fdexcep;
int maxfd = -99;
struct timeval before;
struct timeval after;
int e;
timeout.tv_sec = 0;
timeout.tv_usec = 100000L; /* 100 ms */
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
multi_fdset(mhandle, &fdread, &fdwrite, &fdexcep, &maxfd);
/* At this point, maxfd is guaranteed to be greater or equal than -1. */
select_test(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
abort_on_test_timeout();
fprintf(stderr, "ping\n");
before = tutil_tvnow();
multi_perform(mhandle, &still_running);
abort_on_test_timeout();
after = tutil_tvnow();
e = elapsed(&before, &after);
fprintf(stderr, "pong = %d\n", e);
if(e > MAX_BLOCKED_TIME_US) {
res = 100;
break;
}
}
test_cleanup:
/* undocumented cleanup sequence - type UA */
curl_multi_cleanup(mhandle);
curl_easy_cleanup(handle);
curl_global_cleanup();
return res;
}
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