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/*
     This file is part of libmicrohttpd
     Copyright (C) 2007, 2013 Christian Grothoff (and other contributing authors)

     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.

     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.

     You should have received a copy of the GNU Lesser General Public
     License along with this library; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
/**
 * @file benchmark_https.c
 * @brief minimal code to benchmark MHD GET performance with HTTPS
 * @author Christian Grothoff
 */

#include "platform.h"
#include <microhttpd.h>

#if defined(CPU_COUNT) && (CPU_COUNT + 0) < 2
#undef CPU_COUNT
#endif
#if ! defined(CPU_COUNT)
#define CPU_COUNT 2
#endif

#define PAGE \
  "<html><head><title>libmicrohttpd demo</title></head><body>libmicrohttpd demo</body></html>"


#define SMALL (1024 * 128)

/**
 * Number of threads to run in the thread pool.  Should (roughly) match
 * the number of cores on your system.
 */
#define NUMBER_OF_THREADS CPU_COUNT

static unsigned int small_deltas[SMALL];

static struct MHD_Response *response;


/**
 * Signature of the callback used by MHD to notify the
 * application about completed requests.
 *
 * @param cls client-defined closure
 * @param connection connection handle
 * @param con_cls value as set by the last call to
 *        the MHD_AccessHandlerCallback
 * @param toe reason for request termination
 * @see MHD_OPTION_NOTIFY_COMPLETED
 */
static void
completed_callback (void *cls,
                    struct MHD_Connection *connection,
                    void **con_cls,
                    enum MHD_RequestTerminationCode toe)
{
  struct timeval *tv = *con_cls;
  struct timeval tve;
  uint64_t delta;
  (void) cls;         /* Unused. Silent compiler warning. */
  (void) connection;  /* Unused. Silent compiler warning. */
  (void) toe;         /* Unused. Silent compiler warning. */

  if (NULL == tv)
    return;
  gettimeofday (&tve, NULL);

  delta = 0;
  if (tve.tv_usec >= tv->tv_usec)
    delta += (tve.tv_sec - tv->tv_sec) * 1000000LL
             + (tve.tv_usec - tv->tv_usec);
  else
    delta += (tve.tv_sec - tv->tv_sec) * 1000000LL
             - tv->tv_usec + tve.tv_usec;
  if (delta < SMALL)
    small_deltas[delta]++;
  else
    fprintf (stdout, "D: %llu 1\n", (unsigned long long) delta);
  free (tv);
}


static void *
uri_logger_cb (void *cls,
               const char *uri)
{
  struct timeval *tv = malloc (sizeof (struct timeval));
  (void) cls; /* Unused. Silent compiler warning. */
  (void) uri; /* Unused. Silent compiler warning. */

  if (NULL != tv)
    gettimeofday (tv, NULL);
  return tv;
}


static int
ahc_echo (void *cls,
          struct MHD_Connection *connection,
          const char *url,
          const char *method,
          const char *version,
          const char *upload_data, size_t *upload_data_size, void **ptr)
{
  (void) cls;               /* Unused. Silent compiler warning. */
  (void) url;               /* Unused. Silent compiler warning. */
  (void) version;           /* Unused. Silent compiler warning. */
  (void) upload_data;       /* Unused. Silent compiler warning. */
  (void) upload_data_size;  /* Unused. Silent compiler warning. */
  (void) ptr;               /* Unused. Silent compiler warning. */

  if (0 != strcmp (method, "GET"))
    return MHD_NO;              /* unexpected method */
  return MHD_queue_response (connection, MHD_HTTP_OK, response);
}


/* test server key */
const char srv_signed_key_pem[] = "-----BEGIN RSA PRIVATE KEY-----\n"
                                  "MIIEowIBAAKCAQEAvfTdv+3fgvVTKRnP/HVNG81cr8TrUP/iiyuve/THMzvFXhCW\n"
                                  "+K03KwEku55QvnUndwBfU/ROzLlv+5hotgiDRNFT3HxurmhouySBrJNJv7qWp8IL\n"
                                  "q4sw32vo0fbMu5BZF49bUXK9L3kW2PdhTtSQPWHEzNrCxO+YgCilKHkY3vQNfdJ0\n"
                                  "20Q5EAAEseD1YtWCIpRvJzYlZMpjYB1ubTl24kwrgOKUJYKqM4jmF4DVQp4oOK/6\n"
                                  "QYGGh1QmHRPAy3CBII6sbb+sZT9cAqU6GYQVB35lm4XAgibXV6KgmpVxVQQ69U6x\n"
                                  "yoOl204xuekZOaG9RUPId74Rtmwfi1TLbBzo2wIDAQABAoIBADu09WSICNq5cMe4\n"
                                  "+NKCLlgAT1NiQpLls1gKRbDhKiHU9j8QWNvWWkJWrCya4QdUfLCfeddCMeiQmv3K\n"
                                  "lJMvDs+5OjJSHFoOsGiuW2Ias7IjnIojaJalfBml6frhJ84G27IXmdz6gzOiTIer\n"
                                  "DjeAgcwBaKH5WwIay2TxIaScl7AwHBauQkrLcyb4hTmZuQh6ArVIN6+pzoVuORXM\n"
                                  "bpeNWl2l/HSN3VtUN6aCAKbN/X3o0GavCCMn5Fa85uJFsab4ss/uP+2PusU71+zP\n"
                                  "sBm6p/2IbGvF5k3VPDA7X5YX61sukRjRBihY8xSnNYx1UcoOsX6AiPnbhifD8+xQ\n"
                                  "Tlf8oJUCgYEA0BTfzqNpr9Wxw5/QXaSdw7S/0eP5a0C/nwURvmfSzuTD4equzbEN\n"
                                  "d+dI/s2JMxrdj/I4uoAfUXRGaabevQIjFzC9uyE3LaOyR2zhuvAzX+vVcs6bSXeU\n"
                                  "pKpCAcN+3Z3evMaX2f+z/nfSUAl2i4J2R+/LQAWJW4KwRky/m+cxpfUCgYEA6bN1\n"
                                  "b73bMgM8wpNt6+fcmS+5n0iZihygQ2U2DEud8nZJL4Nrm1dwTnfZfJBnkGj6+0Q0\n"
                                  "cOwj2KS0/wcEdJBP0jucU4v60VMhp75AQeHqidIde0bTViSRo3HWKXHBIFGYoU3T\n"
                                  "LyPyKndbqsOObnsFXHn56Nwhr2HLf6nw4taGQY8CgYBoSW36FLCNbd6QGvLFXBGt\n"
                                  "2lMhEM8az/K58kJ4WXSwOLtr6MD/WjNT2tkcy0puEJLm6BFCd6A6pLn9jaKou/92\n"
                                  "SfltZjJPb3GUlp9zn5tAAeSSi7YMViBrfuFiHObij5LorefBXISLjuYbMwL03MgH\n"
                                  "Ocl2JtA2ywMp2KFXs8GQWQKBgFyIVv5ogQrbZ0pvj31xr9HjqK6d01VxIi+tOmpB\n"
                                  "4ocnOLEcaxX12BzprW55ytfOCVpF1jHD/imAhb3YrHXu0fwe6DXYXfZV4SSG2vB7\n"
                                  "IB9z14KBN5qLHjNGFpMQXHSMek+b/ftTU0ZnPh9uEM5D3YqRLVd7GcdUhHvG8P8Q\n"
                                  "C9aXAoGBAJtID6h8wOGMP0XYX5YYnhlC7dOLfk8UYrzlp3xhqVkzKthTQTj6wx9R\n"
                                  "GtC4k7U1ki8oJsfcIlBNXd768fqDVWjYju5rzShMpo8OCTS6ipAblKjCxPPVhIpv\n"
                                  "tWPlbSn1qj6wylstJ5/3Z+ZW5H4wIKp5jmLiioDhcP0L/Ex3Zx8O\n"
                                  "-----END RSA PRIVATE KEY-----\n";

/* test server CA signed certificates */
const char srv_signed_cert_pem[] = "-----BEGIN CERTIFICATE-----\n"
                                   "MIIDGzCCAgWgAwIBAgIES0KCvTALBgkqhkiG9w0BAQUwFzEVMBMGA1UEAxMMdGVz\n"
                                   "dF9jYV9jZXJ0MB4XDTEwMDEwNTAwMDcyNVoXDTQ1MDMxMjAwMDcyNVowFzEVMBMG\n"
                                   "A1UEAxMMdGVzdF9jYV9jZXJ0MIIBHzALBgkqhkiG9w0BAQEDggEOADCCAQkCggEA\n"
                                   "vfTdv+3fgvVTKRnP/HVNG81cr8TrUP/iiyuve/THMzvFXhCW+K03KwEku55QvnUn\n"
                                   "dwBfU/ROzLlv+5hotgiDRNFT3HxurmhouySBrJNJv7qWp8ILq4sw32vo0fbMu5BZ\n"
                                   "F49bUXK9L3kW2PdhTtSQPWHEzNrCxO+YgCilKHkY3vQNfdJ020Q5EAAEseD1YtWC\n"
                                   "IpRvJzYlZMpjYB1ubTl24kwrgOKUJYKqM4jmF4DVQp4oOK/6QYGGh1QmHRPAy3CB\n"
                                   "II6sbb+sZT9cAqU6GYQVB35lm4XAgibXV6KgmpVxVQQ69U6xyoOl204xuekZOaG9\n"
                                   "RUPId74Rtmwfi1TLbBzo2wIDAQABo3YwdDAMBgNVHRMBAf8EAjAAMBMGA1UdJQQM\n"
                                   "MAoGCCsGAQUFBwMBMA8GA1UdDwEB/wQFAwMHIAAwHQYDVR0OBBYEFOFi4ilKOP1d\n"
                                   "XHlWCMwmVKr7mgy8MB8GA1UdIwQYMBaAFP2olB4s2T/xuoQ5pT2RKojFwZo2MAsG\n"
                                   "CSqGSIb3DQEBBQOCAQEAHVWPxazupbOkG7Did+dY9z2z6RjTzYvurTtEKQgzM2Vz\n"
                                   "GQBA+3pZ3c5mS97fPIs9hZXfnQeelMeZ2XP1a+9vp35bJjZBBhVH+pqxjCgiUflg\n"
                                   "A3Zqy0XwwVCgQLE2HyaU3DLUD/aeIFK5gJaOSdNTXZLv43K8kl4cqDbMeRpVTbkt\n"
                                   "YmG4AyEOYRNKGTqMEJXJoxD5E3rBUNrVI/XyTjYrulxbNPcMWEHKNeeqWpKDYTFo\n"
                                   "Bb01PCthGXiq/4A2RLAFosadzRa8SBpoSjPPfZ0b2w4MJpReHqKbR5+T2t6hzml6\n"
                                   "4ToyOKPDmamiTuN5KzLN3cw7DQlvWMvqSOChPLnA3Q==\n"
                                   "-----END CERTIFICATE-----\n";


int
main (int argc, char *const *argv)
{
  struct MHD_Daemon *d;
  unsigned int i;

  if (argc != 2)
  {
    printf ("%s PORT\n", argv[0]);
    return 1;
  }
  response = MHD_create_response_from_buffer (strlen (PAGE),
                                              (void *) PAGE,
                                              MHD_RESPMEM_PERSISTENT);
  d = MHD_start_daemon (MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_TLS
#ifdef EPOLL_SUPPORT
                        | MHD_USE_EPOLL | MHD_USE_TURBO
#endif
                        ,
                        atoi (argv[1]),
                        NULL, NULL, &ahc_echo, NULL,
                        MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 120,
                        MHD_OPTION_THREAD_POOL_SIZE, (unsigned
                                                      int) NUMBER_OF_THREADS,
                        MHD_OPTION_URI_LOG_CALLBACK, &uri_logger_cb, NULL,
                        MHD_OPTION_NOTIFY_COMPLETED, &completed_callback, NULL,
                        MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 1000,
                        /* Optionally, the gnutls_load_file() can be used to
                           load the key and the certificate from file. */
                        MHD_OPTION_HTTPS_MEM_KEY, srv_signed_key_pem,
                        MHD_OPTION_HTTPS_MEM_CERT, srv_signed_cert_pem,
                        MHD_OPTION_END);
  if (d == NULL)
    return 1;
  (void) getc (stdin);
  MHD_stop_daemon (d);
  MHD_destroy_response (response);
  for (i = 0; i<SMALL; i++)
    if (0 != small_deltas[i])
      fprintf (stdout, "D: %d %u\n", i, small_deltas[i]);
  return 0;
}