Blame src/testcurl/test_quiesce.c

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/*
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     This file is part of libmicrohttpd
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     Copyright (C) 2013, 2015 Christian Grothoff
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     libmicrohttpd is free software; you can redistribute it and/or modify
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     it under the terms of the GNU General Public License as published
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     by the Free Software Foundation; either version 2, or (at your
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     option) any later version.
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     libmicrohttpd is distributed in the hope that it will be useful, but
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     WITHOUT ANY WARRANTY; without even the implied warranty of
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     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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     General Public License for more details.
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     You should have received a copy of the GNU General Public License
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     along with libmicrohttpd; see the file COPYING.  If not, write to the
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     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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     Boston, MA 02110-1301, USA.
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*/
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/**
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 * @file test_quiesce.c
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 * @brief  Testcase for libmicrohttpd quiescing
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 * @author Christian Grothoff
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 */
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#include "MHD_config.h"
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#include "platform.h"
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#include <curl/curl.h>
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#include <microhttpd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <sys/types.h>
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#include <pthread.h>
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#include "mhd_sockets.h" /* only macros used */
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#ifndef WINDOWS
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#include <unistd.h>
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#include <sys/socket.h>
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#endif
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#if defined(CPU_COUNT) && (CPU_COUNT+0) < 2
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#undef CPU_COUNT
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#endif
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#if !defined(CPU_COUNT)
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#define CPU_COUNT 2
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#endif
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struct CBC
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{
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  char *buf;
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  size_t pos;
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  size_t size;
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};
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static int port;
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static size_t
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copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx)
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{
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  struct CBC *cbc = ctx;
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  if (cbc->pos + size * nmemb > cbc->size)
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    return 0;                   /* overflow */
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  memcpy (&cbc->buf[cbc->pos], ptr, size * nmemb);
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  cbc->pos += size * nmemb;
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  return size * nmemb;
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}
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static int
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ahc_echo (void *cls,
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          struct MHD_Connection *connection,
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          const char *url,
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          const char *method,
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          const char *version,
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          const char *upload_data, size_t *upload_data_size,
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          void **unused)
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{
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  static int ptr;
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  const char *me = cls;
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  struct MHD_Response *response;
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  int ret;
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  (void)version;(void)upload_data;(void)upload_data_size;       /* Unused. Silent compiler warning. */
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  if (0 != strcmp (me, method))
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    return MHD_NO;              /* unexpected method */
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  if (&ptr != *unused)
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    {
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      *unused = &pt;;
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      return MHD_YES;
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    }
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  *unused = NULL;
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  response = MHD_create_response_from_buffer (strlen (url),
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  				      (void *) url,
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					      MHD_RESPMEM_MUST_COPY);
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  ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
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  MHD_destroy_response (response);
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  if (ret == MHD_NO)
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    abort ();
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  return ret;
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}
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static void
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request_completed (void *cls, struct MHD_Connection *connection,
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		   void **con_cls, enum MHD_RequestTerminationCode code)
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{
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  (void)connection;(void)con_cls;(void)code;    /* Unused. Silent compiler warning. */
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  int *done = (int *)cls;
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  *done = 1;
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}
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static void *
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ServeOneRequest(void *param)
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{
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  struct MHD_Daemon *d;
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  fd_set rs;
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  fd_set ws;
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  fd_set es;
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  MHD_socket fd, max;
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  time_t start;
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  struct timeval tv;
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  int done = 0;
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  fd = (MHD_socket) (intptr_t) param;
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  d = MHD_start_daemon (MHD_USE_ERROR_LOG,
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                        0, NULL, NULL, &ahc_echo, "GET",
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                        MHD_OPTION_LISTEN_SOCKET, fd,
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                        MHD_OPTION_NOTIFY_COMPLETED, &request_completed, &done,
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                        MHD_OPTION_END);
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  if (d == NULL)
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    return "MHD_start_daemon() failed";
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  start = time (NULL);
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  while ((time (NULL) - start < 5) && done == 0)
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    {
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      max = 0;
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      FD_ZERO (&rs);
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      FD_ZERO (&ws);
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      FD_ZERO (&es);
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      if (MHD_YES != MHD_get_fdset (d, &rs, &ws, &es, &max))
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        {
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          MHD_stop_daemon (d);
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          MHD_socket_close_chk_(fd);
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          return "MHD_get_fdset() failed";
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        }
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      tv.tv_sec = 0;
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      tv.tv_usec = 1000;
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      if (-1 == MHD_SYS_select_ (max + 1, &rs, &ws, &es, &tv))
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        {
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#ifdef MHD_POSIX_SOCKETS
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          if (EINTR != errno)
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            abort ();
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#else
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          if (WSAEINVAL != WSAGetLastError() || 0 != rs.fd_count || 0 != ws.fd_count || 0 != es.fd_count)
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            abort ();
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          Sleep (1000);
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#endif
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        }
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      MHD_run (d);
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    }
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  fd = MHD_quiesce_daemon (d);
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  if (MHD_INVALID_SOCKET == fd)
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    {
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      MHD_stop_daemon (d);
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      return "MHD_quiesce_daemon() failed in ServeOneRequest()";
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    }
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  MHD_stop_daemon (d);
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  return done ? NULL : "Requests was not served by ServeOneRequest()";
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}
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static CURL *
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setupCURL (void *cbc)
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{
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  CURL *c;
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  c = curl_easy_init ();
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  curl_easy_setopt (c, CURLOPT_URL, "http://127.0.0.1/hello_world");
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  curl_easy_setopt (c, CURLOPT_PORT, (long)port);
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  curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, &copyBuffer);
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  curl_easy_setopt (c, CURLOPT_WRITEDATA, cbc);
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  curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
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  curl_easy_setopt (c, CURLOPT_TIMEOUT_MS, 150L);
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  curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT_MS, 150L);
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  curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
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  /* NOTE: use of CONNECTTIMEOUT without also
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     setting NOSIGNAL results in really weird
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     crashes on my system!*/
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  curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
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  return c;
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}
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static int
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testGet (int type, int pool_count, int poll_flag)
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{
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  struct MHD_Daemon *d;
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  CURL *c;
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  char buf[2048];
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  struct CBC cbc;
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  CURLcode errornum;
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  MHD_socket fd;
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  pthread_t thrd;
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  const char *thrdRet;
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  if (MHD_NO != MHD_is_feature_supported (MHD_FEATURE_AUTODETECT_BIND_PORT))
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    port = 0;
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  else
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    port = 1480;
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  cbc.buf = buf;
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  cbc.size = 2048;
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  cbc.pos = 0;
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  if (pool_count > 0) {
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    d = MHD_start_daemon (type | MHD_USE_ERROR_LOG | MHD_USE_ITC | poll_flag,
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                          port, NULL, NULL, &ahc_echo, "GET",
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                          MHD_OPTION_THREAD_POOL_SIZE, pool_count, MHD_OPTION_END);
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  } else {
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    d = MHD_start_daemon (type | MHD_USE_ERROR_LOG | MHD_USE_ITC | poll_flag,
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                          port, NULL, NULL, &ahc_echo, "GET", MHD_OPTION_END);
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  }
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  if (d == NULL)
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    return 1;
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  if (0 == port)
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    {
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      const union MHD_DaemonInfo *dinfo;
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      dinfo = MHD_get_daemon_info (d, MHD_DAEMON_INFO_BIND_PORT);
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      if (NULL == dinfo || 0 == dinfo->port)
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        { MHD_stop_daemon (d); return 32; }
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      port = (int)dinfo->port;
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    }
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  c = setupCURL(&cbc);
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  if (CURLE_OK != (errornum = curl_easy_perform (c)))
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    {
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      fprintf (stderr,
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               "curl_easy_perform failed: `%s'\n",
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               curl_easy_strerror (errornum));
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 2;
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    }
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  if (cbc.pos != strlen ("/hello_world")) {
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    curl_easy_cleanup (c);
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    MHD_stop_daemon (d);
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    return 4;
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  }
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  if (0 != strncmp ("/hello_world", cbc.buf, strlen ("/hello_world"))) {
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    curl_easy_cleanup (c);
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    MHD_stop_daemon (d);
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    return 8;
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  }
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  fd = MHD_quiesce_daemon (d);
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  if (MHD_INVALID_SOCKET == fd)
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    {
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      fprintf (stderr,
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               "MHD_quiesce_daemon failed.\n");
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 2;
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    }
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  if (0 != pthread_create(&thrd, NULL, &ServeOneRequest, (void*)(intptr_t) fd))
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    {
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      fprintf (stderr, "pthread_create failed\n");
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 16;
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    }
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  cbc.pos = 0;
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  if (CURLE_OK != (errornum = curl_easy_perform (c)))
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    {
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      fprintf (stderr,
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               "curl_easy_perform failed: `%s'\n",
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               curl_easy_strerror (errornum));
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 2;
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    }
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  if (0 != pthread_join(thrd, (void**)&thrdRet))
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    {
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      fprintf (stderr, "pthread_join failed\n");
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 16;
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    }
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  if (NULL != thrdRet)
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    {
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      fprintf (stderr, "ServeOneRequest() error: %s\n", thrdRet);
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 16;
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    }
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  if (cbc.pos != strlen ("/hello_world"))
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    {
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      fprintf(stderr, "%s\n", cbc.buf);
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      MHD_socket_close_chk_(fd);
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      return 4;
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    }
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  if (0 != strncmp ("/hello_world", cbc.buf, strlen ("/hello_world")))
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    {
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      fprintf(stderr, "%s\n", cbc.buf);
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      MHD_socket_close_chk_(fd);
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      return 8;
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    }
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  /* at this point, the forked server quit, and the new
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   * server has quiesced, so new requests should fail
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   */
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  if (CURLE_OK == (errornum = curl_easy_perform (c)))
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    {
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      fprintf (stderr, "curl_easy_perform should fail\n");
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      MHD_socket_close_chk_(fd);
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      return 2;
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    }
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  curl_easy_cleanup (c);
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  MHD_stop_daemon (d);
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  MHD_socket_close_chk_(fd);
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  return 0;
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}
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static int
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testExternalGet ()
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{
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  struct MHD_Daemon *d;
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  CURL *c;
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  char buf[2048];
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  struct CBC cbc;
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  CURLM *multi;
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  CURLMcode mret;
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  fd_set rs;
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  fd_set ws;
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  fd_set es;
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  MHD_socket maxsock;
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#ifdef MHD_WINSOCK_SOCKETS
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  int maxposixs; /* Max socket number unused on W32 */
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#else  /* MHD_POSIX_SOCKETS */
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#define maxposixs maxsock
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#endif /* MHD_POSIX_SOCKETS */
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  int running;
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  struct CURLMsg *msg;
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  time_t start;
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  struct timeval tv;
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  int i;
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  MHD_socket fd;
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  if (MHD_NO != MHD_is_feature_supported (MHD_FEATURE_AUTODETECT_BIND_PORT))
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    port = 0;
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  else
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    port = 1481;
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  multi = NULL;
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  cbc.buf = buf;
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  cbc.size = 2048;
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  cbc.pos = 0;
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  d = MHD_start_daemon (MHD_USE_ERROR_LOG,
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                        port,
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                        NULL, NULL,
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                        &ahc_echo, "GET",
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                        MHD_OPTION_END);
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  if (d == NULL)
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    return 256;
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  if (0 == port)
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    {
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      const union MHD_DaemonInfo *dinfo;
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      dinfo = MHD_get_daemon_info (d, MHD_DAEMON_INFO_BIND_PORT);
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      if (NULL == dinfo || 0 == dinfo->port)
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        { MHD_stop_daemon (d); return 32; }
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      port = (int)dinfo->port;
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    }
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  c = setupCURL(&cbc);
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  multi = curl_multi_init ();
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  if (multi == NULL)
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    {
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 512;
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    }
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  mret = curl_multi_add_handle (multi, c);
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  if (mret != CURLM_OK)
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    {
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      curl_multi_cleanup (multi);
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      curl_easy_cleanup (c);
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      MHD_stop_daemon (d);
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      return 1024;
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    }
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  for (i = 0; i < 2; i++)
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    {
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      start = time (NULL);
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      while ( (time (NULL) - start < 5) &&
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              (NULL != multi) )
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        {
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          maxsock = MHD_INVALID_SOCKET;
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          maxposixs = -1;
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          FD_ZERO (&rs);
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          FD_ZERO (&ws);
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          FD_ZERO (&es);
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          curl_multi_perform (multi, &running);
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          mret = curl_multi_fdset (multi, &rs, &ws, &es, &maxposixs);
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          if (mret != CURLM_OK)
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            {
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              curl_multi_remove_handle (multi, c);
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              curl_multi_cleanup (multi);
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              curl_easy_cleanup (c);
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              MHD_stop_daemon (d);
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              return 2048;
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            }
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          if (MHD_YES != MHD_get_fdset (d, &rs, &ws, &es, &maxsock))
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            {
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              curl_multi_remove_handle (multi, c);
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              curl_multi_cleanup (multi);
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              curl_easy_cleanup (c);
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              MHD_stop_daemon (d);
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              return 4096;
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            }
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          tv.tv_sec = 0;
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          tv.tv_usec = 1000;
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          if (-1 == select (maxposixs + 1, &rs, &ws, &es, &tv))
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            {
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#ifdef MHD_POSIX_SOCKETS
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              if (EINTR != errno)
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                abort ();
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#else
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              if (WSAEINVAL != WSAGetLastError() || 0 != rs.fd_count || 0 != ws.fd_count || 0 != es.fd_count)
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                abort ();
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              Sleep (1000);
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#endif
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            }
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          curl_multi_perform (multi, &running);
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          if (0 == running)
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            {
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              msg = curl_multi_info_read (multi, &running);
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              if (NULL == msg)
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                break;
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              if (msg->msg == CURLMSG_DONE)
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                {
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                  if (i == 0 && msg->data.result != CURLE_OK)
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                    printf ("%s failed at %s:%d: `%s'\n",
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                            "curl_multi_perform",
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                            __FILE__,
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                            __LINE__,
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                            curl_easy_strerror (msg->data.result));
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                  else if ( (i == 1) &&
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                            (msg->data.result == CURLE_OK) )
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                    printf ("%s should have failed at %s:%d\n",
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                            "curl_multi_perform",
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                            __FILE__,
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                            __LINE__);
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                  curl_multi_remove_handle (multi, c);
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                  curl_multi_cleanup (multi);
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                  curl_easy_cleanup (c);
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                  c = NULL;
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                  multi = NULL;
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                }
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            }
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          MHD_run (d);
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        }
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      if (0 == i)
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        {
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          /* quiesce the daemon on the 1st iteration, so the 2nd should fail */
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          fd = MHD_quiesce_daemon(d);
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          if (MHD_INVALID_SOCKET == fd)
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            {
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              fprintf (stderr,
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                       "MHD_quiesce_daemon failed.\n");
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              curl_multi_remove_handle (multi, c);
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              curl_multi_cleanup (multi);
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              curl_easy_cleanup (c);
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              MHD_stop_daemon (d);
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              return 2;
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            }
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          c = setupCURL (&cbc);
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          multi = curl_multi_init ();
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          mret = curl_multi_add_handle (multi, c);
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          if (mret != CURLM_OK)
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            {
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              curl_multi_remove_handle (multi, c);
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              curl_multi_cleanup (multi);
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              curl_easy_cleanup (c);
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              MHD_stop_daemon (d);
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              return 32768;
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            }
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        }
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    }
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  if (NULL != multi)
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    {
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      curl_multi_remove_handle (multi, c);
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      curl_easy_cleanup (c);
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      curl_multi_cleanup (multi);
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    }
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  MHD_stop_daemon (d);
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  MHD_socket_close_chk_ (fd);
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  if (cbc.pos != strlen ("/hello_world"))
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    return 8192;
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  if (0 != strncmp ("/hello_world", cbc.buf, strlen ("/hello_world")))
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    return 16384;
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  return 0;
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}
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int
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main (int argc, char *const *argv)
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{
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  unsigned int errorCount = 0;
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  (void)argc; (void)argv; /* Unused. Silent compiler warning. */
Packit 875988
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  if (0 != curl_global_init (CURL_GLOBAL_WIN32))
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    return 2;
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  errorCount += testGet (MHD_USE_INTERNAL_POLLING_THREAD, 0, 0);
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  errorCount += testGet (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD, 0, 0);
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  errorCount += testGet (MHD_USE_INTERNAL_POLLING_THREAD, CPU_COUNT, 0);
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  errorCount += testExternalGet ();
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  if (MHD_YES == MHD_is_feature_supported(MHD_FEATURE_POLL))
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    {
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      errorCount += testGet(MHD_USE_INTERNAL_POLLING_THREAD, 0, MHD_USE_POLL);
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      errorCount += testGet (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD, 0, MHD_USE_POLL);
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      errorCount += testGet (MHD_USE_INTERNAL_POLLING_THREAD, CPU_COUNT, MHD_USE_POLL);
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    }
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  if (MHD_YES == MHD_is_feature_supported(MHD_FEATURE_EPOLL))
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    {
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      errorCount += testGet (MHD_USE_INTERNAL_POLLING_THREAD, 0, MHD_USE_EPOLL);
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      errorCount += testGet (MHD_USE_INTERNAL_POLLING_THREAD, CPU_COUNT, MHD_USE_EPOLL);
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    }
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  if (errorCount != 0)
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    fprintf (stderr, "Error (code: %u)\n", errorCount);
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  curl_global_cleanup ();
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  return errorCount != 0;       /* 0 == pass */
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}