/*************************************************************************** * _ _ ____ _ * 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; }