1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2012, 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 http://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_US 500000
35
36 /* return the number of microseconds between two time stamps */
elapsed(struct timeval * before,struct timeval * after)37 static int elapsed(struct timeval *before,
38 struct timeval *after)
39 {
40 ssize_t result;
41
42 result = (after->tv_sec - before->tv_sec) * 1000000 +
43 after->tv_usec - before->tv_usec;
44 if (result < 0)
45 result = 0;
46
47 return curlx_sztosi(result);
48 }
49
50
test(char * URL)51 int test(char *URL)
52 {
53 CURL *handle = NULL;
54 CURLM *mhandle = NULL;
55 int res = 0;
56 int still_running = 0;
57
58 start_test_timing();
59
60 global_init(CURL_GLOBAL_ALL);
61
62 easy_init(handle);
63
64 easy_setopt(handle, CURLOPT_URL, URL);
65 easy_setopt(handle, CURLOPT_VERBOSE, 1L);
66
67 multi_init(mhandle);
68
69 multi_add_handle(mhandle, handle);
70
71 multi_perform(mhandle, &still_running);
72
73 abort_on_test_timeout();
74
75 while(still_running) {
76 struct timeval timeout;
77 fd_set fdread;
78 fd_set fdwrite;
79 fd_set fdexcep;
80 int maxfd = -99;
81 struct timeval before;
82 struct timeval after;
83 int e;
84
85 timeout.tv_sec = 0;
86 timeout.tv_usec = 100000L; /* 100 ms */
87
88 FD_ZERO(&fdread);
89 FD_ZERO(&fdwrite);
90 FD_ZERO(&fdexcep);
91
92 multi_fdset(mhandle, &fdread, &fdwrite, &fdexcep, &maxfd);
93
94 /* At this point, maxfd is guaranteed to be greater or equal than -1. */
95
96 select_test(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
97
98 abort_on_test_timeout();
99
100 fprintf(stderr, "ping\n");
101 before = tutil_tvnow();
102
103 multi_perform(mhandle, &still_running);
104
105 abort_on_test_timeout();
106
107 after = tutil_tvnow();
108 e = elapsed(&before, &after);
109 fprintf(stderr, "pong = %d\n", e);
110
111 if(e > MAX_BLOCKED_TIME_US) {
112 res = 100;
113 break;
114 }
115 }
116
117 test_cleanup:
118
119 /* undocumented cleanup sequence - type UA */
120
121 curl_multi_cleanup(mhandle);
122 curl_easy_cleanup(handle);
123 curl_global_cleanup();
124
125 return res;
126 }
127