Added new tests with header fold

2 files changed, 1241 insertions, 0 deletions

diff --git a/src/testcurl/Makefile.am b/src/testcurl/Makefile.am
index 834c0775..930bedd3 100644
--- a/src/testcurl/Makefile.am
+++ b/src/testcurl/Makefile.am
@@ -137,6 +137,9 @@ check_PROGRAMS = \
   test_get_chunked_close_empty_forced \
   test_put_chunked \
   test_callback \
+  test_get_header_fold \
+  test_put_header_fold \
+  test_put_large_header_fold \
   $(EMPTY_ITEM)
 
 if ENABLE_COOKIE
@@ -629,3 +632,10 @@ test_put_broken_len_SOURCES = \
   test_put_broken_len.c mhd_has_in_name.h mhd_has_param.h
 
 test_put_broken_len10_SOURCES = $(test_put_broken_len_SOURCES)
+
+test_put_header_fold_SOURCES = \
+  test_put_header_fold.c mhd_has_in_name.h mhd_has_param.h
+
+test_put_large_header_fold_SOURCES = $(test_put_header_fold_SOURCES)
+
+test_get_header_fold_SOURCES = $(test_put_header_fold_SOURCES)
diff --git a/src/testcurl/test_put_header_fold.c b/src/testcurl/test_put_header_fold.c
new file mode 100644
index 00000000..f01b6762
--- /dev/null
+++ b/src/testcurl/test_put_header_fold.c
@@ -0,0 +1,1231 @@
+/*
+     This file is part of GNU libmicrohttpd
+     Copyright (C) 2010 Christian Grothoff
+     Copyright (C) 2016-2022 Evgeny Grin (Karlson2k)
+
+     GNU libmicrohttpd is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, or (at your
+     option) any later version.
+
+     GNU libmicrohttpd 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
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with libmicrohttpd; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
+*/
+
+/**
+ * @file testcurl/test_put_header_fold.c
+ * @brief  Testcase for requests with header fold
+ * @author Karlson2k (Evgeny Grin)
+ */
+
+#include "mhd_options.h"
+#include "platform.h"
+#include <curl/curl.h>
+#include <microhttpd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#ifndef _WIN32
+#include <sys/socket.h>
+#include <unistd.h>
+#endif
+
+#include "internal.h"
+#include "mhd_has_param.h"
+#include "mhd_has_in_name.h"
+
+/* The next macros are borrowed from memorypool.c
+   Keep them in sync! */
+
+/**
+ * Align to 2x word size (as GNU libc does).
+ */
+#define ALIGN_SIZE (2 * sizeof(void*))
+/**
+ * Round up 'n' to a multiple of ALIGN_SIZE.
+ */
+#define ROUND_TO_ALIGN(n) (((n) + (ALIGN_SIZE - 1)) \
+                           / (ALIGN_SIZE) *(ALIGN_SIZE))
+#ifndef MHD_ASAN_POISON_ACTIVE
+#define _MHD_RED_ZONE_SIZE (0)
+#else  /* MHD_ASAN_POISON_ACTIVE */
+#define _MHD_RED_ZONE_SIZE (ALIGN_SIZE)
+#endif /* MHD_ASAN_POISON_ACTIVE */
+
+#define ROUND_TO_ALIGN_PLUS_RED_ZONE(n) (ROUND_TO_ALIGN(n) + _MHD_RED_ZONE_SIZE)
+
+/* The previous macros are borrowed from memorypool.c
+   Keep them in sync! */
+
+#ifndef MHD_STATICSTR_LEN_
+/**
+ * Determine length of static string / macro strings at compile time.
+ */
+#define MHD_STATICSTR_LEN_(macro) (sizeof(macro) / sizeof(char) - 1)
+#endif /* ! MHD_STATICSTR_LEN_ */
+
+#ifndef CURL_VERSION_BITS
+#define CURL_VERSION_BITS(x,y,z) ((x) << 16 | (y) << 8 | (z))
+#endif /* ! CURL_VERSION_BITS */
+#ifndef CURL_AT_LEAST_VERSION
+#define CURL_AT_LEAST_VERSION(x,y,z) \
+  (LIBCURL_VERSION_NUM >= CURL_VERSION_BITS (x, y, z))
+#endif /* ! CURL_AT_LEAST_VERSION */
+
+#ifndef _MHD_INSTRMACRO
+/* Quoted macro parameter */
+#define _MHD_INSTRMACRO(a) #a
+#endif /* ! _MHD_INSTRMACRO */
+#ifndef _MHD_STRMACRO
+/* Quoted expanded macro parameter */
+#define _MHD_STRMACRO(a) _MHD_INSTRMACRO (a)
+#endif /* ! _MHD_STRMACRO */
+
+#if defined(HAVE___FUNC__)
+#define externalErrorExit(ignore) \
+  _externalErrorExit_func (NULL, __func__, __LINE__)
+#define externalErrorExitDesc(errDesc) \
+  _externalErrorExit_func (errDesc, __func__, __LINE__)
+#define libcurlErrorExit(ignore) \
+  _libcurlErrorExit_func (NULL, __func__, __LINE__)
+#define libcurlErrorExitDesc(errDesc) \
+  _libcurlErrorExit_func (errDesc, __func__, __LINE__)
+#define mhdErrorExit(ignore) \
+  _mhdErrorExit_func (NULL, __func__, __LINE__)
+#define mhdErrorExitDesc(errDesc) \
+  _mhdErrorExit_func (errDesc, __func__, __LINE__)
+#define checkCURLE_OK(libcurlcall) \
+  _checkCURLE_OK_func ((libcurlcall), _MHD_STRMACRO (libcurlcall), \
+                       __func__, __LINE__)
+#elif defined(HAVE___FUNCTION__)
+#define externalErrorExit(ignore) \
+  _externalErrorExit_func (NULL, __FUNCTION__, __LINE__)
+#define externalErrorExitDesc(errDesc) \
+  _externalErrorExit_func (errDesc, __FUNCTION__, __LINE__)
+#define libcurlErrorExit(ignore) \
+  _libcurlErrorExit_func (NULL, __FUNCTION__, __LINE__)
+#define libcurlErrorExitDesc(errDesc) \
+  _libcurlErrorExit_func (errDesc, __FUNCTION__, __LINE__)
+#define mhdErrorExit(ignore) \
+  _mhdErrorExit_func (NULL, __FUNCTION__, __LINE__)
+#define mhdErrorExitDesc(errDesc) \
+  _mhdErrorExit_func (errDesc, __FUNCTION__, __LINE__)
+#define checkCURLE_OK(libcurlcall) \
+  _checkCURLE_OK_func ((libcurlcall), _MHD_STRMACRO (libcurlcall), \
+                       __FUNCTION__, __LINE__)
+#else
+#define externalErrorExit(ignore) _externalErrorExit_func (NULL, NULL, __LINE__)
+#define externalErrorExitDesc(errDesc) \
+  _externalErrorExit_func (errDesc, NULL, __LINE__)
+#define libcurlErrorExit(ignore) _libcurlErrorExit_func (NULL, NULL, __LINE__)
+#define libcurlErrorExitDesc(errDesc) \
+  _libcurlErrorExit_func (errDesc, NULL, __LINE__)
+#define mhdErrorExit(ignore) _mhdErrorExit_func (NULL, NULL, __LINE__)
+#define mhdErrorExitDesc(errDesc) _mhdErrorExit_func (errDesc, NULL, __LINE__)
+#define checkCURLE_OK(libcurlcall) \
+  _checkCURLE_OK_func ((libcurlcall), _MHD_STRMACRO (libcurlcall), NULL, \
+                       __LINE__)
+#endif
+
+
+_MHD_NORETURN static void
+_externalErrorExit_func (const char *errDesc, const char *funcName, int lineNum)
+{
+  fflush (stdout);
+  if ((NULL != errDesc) && (0 != errDesc[0]))
+    fprintf (stderr, "%s", errDesc);
+  else
+    fprintf (stderr, "System or external library call failed");
+  if ((NULL != funcName) && (0 != funcName[0]))
+    fprintf (stderr, " in %s", funcName);
+  if (0 < lineNum)
+    fprintf (stderr, " at line %d", lineNum);
+
+  fprintf (stderr, ".\nLast errno value: %d (%s)\n", (int) errno,
+           strerror (errno));
+#ifdef MHD_WINSOCK_SOCKETS
+  fprintf (stderr, "WSAGetLastError() value: %d\n", (int) WSAGetLastError ());
+#endif /* MHD_WINSOCK_SOCKETS */
+  fflush (stderr);
+  exit (99);
+}
+
+
+static char libcurl_errbuf[CURL_ERROR_SIZE] = "";
+
+_MHD_NORETURN static void
+_libcurlErrorExit_func (const char *errDesc, const char *funcName, int lineNum)
+{
+  fflush (stdout);
+  if ((NULL != errDesc) && (0 != errDesc[0]))
+    fprintf (stderr, "%s", errDesc);
+  else
+    fprintf (stderr, "CURL library call failed");
+  if ((NULL != funcName) && (0 != funcName[0]))
+    fprintf (stderr, " in %s", funcName);
+  if (0 < lineNum)
+    fprintf (stderr, " at line %d", lineNum);
+
+  fprintf (stderr, ".\nLast errno value: %d (%s)\n", (int) errno,
+           strerror (errno));
+#ifdef MHD_WINSOCK_SOCKETS
+  fprintf (stderr, "WSAGetLastError() value: %d\n", (int) WSAGetLastError ());
+#endif /* MHD_WINSOCK_SOCKETS */
+  if (0 != libcurl_errbuf[0])
+    fprintf (stderr, "Last libcurl error description: %s\n", libcurl_errbuf);
+
+  fflush (stderr);
+  exit (99);
+}
+
+
+_MHD_NORETURN static void
+_mhdErrorExit_func (const char *errDesc, const char *funcName, int lineNum)
+{
+  fflush (stdout);
+  if ((NULL != errDesc) && (0 != errDesc[0]))
+    fprintf (stderr, "%s", errDesc);
+  else
+    fprintf (stderr, "MHD unexpected error");
+  if ((NULL != funcName) && (0 != funcName[0]))
+    fprintf (stderr, " in %s", funcName);
+  if (0 < lineNum)
+    fprintf (stderr, " at line %d", lineNum);
+
+  fprintf (stderr, ".\nLast errno value: %d (%s)\n", (int) errno,
+           strerror (errno));
+#ifdef MHD_WINSOCK_SOCKETS
+  fprintf (stderr, "WSAGetLastError() value: %d\n", (int) WSAGetLastError ());
+#endif /* MHD_WINSOCK_SOCKETS */
+
+  fflush (stderr);
+  exit (8);
+}
+
+
+/* Could be increased to facilitate debugging */
+#define TIMEOUTS_VAL 5
+
+#define TEST_UPLOAD_DATA_SIZE 2048U
+
+#define EXPECTED_URI_BASE_PATH  "/"
+
+#define URL_SCHEME "http:/" "/"
+
+#define URL_HOST "127.0.0.1"
+
+#define URL_SCHEME_HOST_PATH URL_SCHEME URL_HOST EXPECTED_URI_BASE_PATH
+
+#define RP_HEADER1_NAME "First"
+#define RP_HEADER1_VALUE "1st"
+#define RP_HEADER1 RP_HEADER1_NAME ": " RP_HEADER1_VALUE
+#define RP_HEADER1_CRLF RP_HEADER1 "\r\n"
+#define RP_HEADER2_NAME "Normal"
+#define RP_HEADER2_VALUE "it's fine"
+#define RP_HEADER2 RP_HEADER2_NAME ": " RP_HEADER2_VALUE
+#define RP_HEADER2_CRLF RP_HEADER2 "\r\n"
+
+#define RQ_HEADER1_NAME RP_HEADER1_NAME
+#define RQ_HEADER1_VALUE RP_HEADER1_VALUE
+#define RQ_HEADER1 RQ_HEADER1_NAME ": " RQ_HEADER1_VALUE
+#define RQ_HEADER2_NAME "Folded"
+#define RQ_HEADER2_VALUE_S "start"
+#define RQ_HEADER2_VALUE_E "end"
+#define RQ_HEADER2_VALUE RQ_HEADER2_VALUE_S "\r\n \r\n " RQ_HEADER2_VALUE_E
+#define RQ_HEADER2 RQ_HEADER2_NAME ": " RQ_HEADER2_VALUE
+#define RQ_HEADER3_NAME RP_HEADER2_NAME
+#define RQ_HEADER3_VALUE RP_HEADER2_VALUE
+#define RQ_HEADER3 RQ_HEADER3_NAME ": " RQ_HEADER3_VALUE
+
+/**
+ * The number of request headers: 3 custom headers + 2 automatic headers
+ */
+#define RQ_NUM_HEADERS (3 + 2)
+/**
+ * The extra size in the memory pool for pointers to the headers
+ */
+#define HEADERS_POINTERS_SIZE \
+  RQ_NUM_HEADERS * \
+  ROUND_TO_ALIGN_PLUS_RED_ZONE(sizeof(struct MHD_HTTP_Req_Header))
+
+#define PAGE \
+  "<html><head><title>libmicrohttpd demo page</title></head>" \
+  "<body>Success!</body></html>"
+
+/* Global parameters */
+static int verbose;
+static int oneone;                  /**< If false use HTTP/1.0 for requests*/
+static int use_get;
+static int use_put;
+static int use_put_large;
+
+/* Static data */
+static struct curl_slist *libcurl_headers = NULL;
+
+static char *put_data = NULL;
+
+/**
+ * Initialise headers for libcurl
+ *
+ * @return non-zero if succeed,
+ *         zero if failed
+ */
+static void
+libcurl_headers_init (void)
+{
+  libcurl_headers = curl_slist_append (NULL, RQ_HEADER1);
+  if (NULL == libcurl_headers)
+    libcurlErrorExitDesc ("curl_slist_append() failed");
+
+  libcurl_headers = curl_slist_append (libcurl_headers, RQ_HEADER2);
+  if (NULL == libcurl_headers)
+    libcurlErrorExitDesc ("curl_slist_append() failed");
+
+  libcurl_headers = curl_slist_append (libcurl_headers, RQ_HEADER3);
+  if (NULL == libcurl_headers)
+    libcurlErrorExitDesc ("curl_slist_append() failed");
+}
+
+
+static void
+init_put_data (void)
+{
+  size_t i;
+  put_data = malloc (TEST_UPLOAD_DATA_SIZE + 1);
+  if (NULL == put_data)
+    externalErrorExit ();
+
+  for (i = 0; i < (TEST_UPLOAD_DATA_SIZE - 1); ++i)
+  {
+    if (0 == (i % 7))
+      put_data[i] = ' ';
+    else if (0 == (i % 47))
+      put_data[i] = '\n';
+    else if (0 == (i % 11))
+      put_data[i] = (char) ('A' + i % ('Z' - 'A' + 1));
+    else
+      put_data[i] = (char) ('a' + i % ('z' - 'a' + 1));
+  }
+  put_data[TEST_UPLOAD_DATA_SIZE - 1] = '\n';
+  put_data[TEST_UPLOAD_DATA_SIZE] = 0;
+}
+
+
+static void
+test_global_init (void)
+{
+  libcurl_errbuf[0] = 0;
+
+  if (0 != curl_global_init (CURL_GLOBAL_WIN32))
+    externalErrorExit ();
+
+  init_put_data ();
+  libcurl_headers_init ();
+}
+
+
+static void
+test_global_cleanup (void)
+{
+  curl_slist_free_all (libcurl_headers);
+  curl_global_cleanup ();
+  if (NULL != put_data)
+    free (put_data);
+  put_data = NULL;
+}
+
+
+struct headers_check_result
+{
+  unsigned int expected_size;
+  int header1_found;
+  int header2_found;
+  unsigned int size_found;
+  unsigned int size_broken_found;
+};
+
+static size_t
+lcurl_hdr_callback (char *buffer, size_t size, size_t nitems,
+                    void *userdata)
+{
+  const size_t data_size = size * nitems;
+  struct headers_check_result *check_res =
+    (struct headers_check_result *) userdata;
+
+  if ((MHD_STATICSTR_LEN_ (RP_HEADER1_CRLF) == data_size) &&
+      (0 == memcmp (RP_HEADER1_CRLF, buffer, data_size)))
+    check_res->header1_found++;
+  else if ((MHD_STATICSTR_LEN_ (RP_HEADER2_CRLF) == data_size) &&
+           (0 == memcmp (RP_HEADER2_CRLF, buffer, data_size)))
+    check_res->header2_found++;
+  else if ((MHD_STATICSTR_LEN_ (MHD_HTTP_HEADER_CONTENT_LENGTH ": ")
+            < data_size) &&
+           (0 ==
+            memcmp (MHD_HTTP_HEADER_CONTENT_LENGTH ": ", buffer,
+                    MHD_STATICSTR_LEN_ (MHD_HTTP_HEADER_CONTENT_LENGTH ": "))))
+  {
+    char cmpbuf[256];
+    int res;
+    const unsigned int numbers_pos =
+      MHD_STATICSTR_LEN_ (MHD_HTTP_HEADER_CONTENT_LENGTH ": ");
+    res = snprintf (cmpbuf, sizeof(cmpbuf), "%u", check_res->expected_size);
+    if ((res <= 0) || (res > ((int) (sizeof(cmpbuf) - 1))))
+      externalErrorExit ();
+    if (data_size - numbers_pos <= 2)
+    {
+      fprintf (stderr, "Broken Content-Length.\n");
+      check_res->size_broken_found++;
+    }
+    else if ((((size_t) res + 2) != data_size - numbers_pos) ||
+             (0 != memcmp (buffer + numbers_pos, cmpbuf, (size_t) res)))
+    {
+      fprintf (stderr, "Wrong Content-Length. "
+               "Expected: %u. "
+               "Received: %.*s.\n",
+               check_res->expected_size,
+               (int) (data_size - numbers_pos - 2),
+               buffer + numbers_pos);
+      check_res->size_broken_found++;
+    }
+    else if (0 != memcmp ("\r\n", buffer + data_size - 2, 2))
+    {
+      fprintf (stderr, "The Content-Length header is not "
+               "terminated by CRLF.\n");
+      check_res->size_broken_found++;
+    }
+    else
+      check_res->size_found++;
+  }
+
+  return data_size;
+}
+
+
+struct CBC
+{
+  /* Upload members */
+  size_t up_pos;
+  size_t up_size;
+  /* Download members */
+  char *dn_buf;
+  size_t dn_pos;
+  size_t dn_buf_size;
+};
+
+
+static size_t
+copyBuffer (void *ptr,
+            size_t size,
+            size_t nmemb,
+            void *ctx)
+{
+  struct CBC *cbc = ctx;
+
+  if (cbc->dn_pos + size * nmemb > cbc->dn_buf_size)
+    return 0;                   /* overflow */
+  memcpy (&cbc->dn_buf[cbc->dn_pos], ptr, size * nmemb);
+  cbc->dn_pos += size * nmemb;
+  return size * nmemb;
+}
+
+
+static size_t
+libcurlUploadDataCB (void *stream, size_t item_size, size_t nitems, void *ctx)
+{
+  size_t to_fill;
+  struct CBC *cbc = ctx;
+
+  to_fill = cbc->up_size - cbc->up_pos;
+  if (to_fill > item_size * nitems)
+    to_fill = item_size * nitems;
+
+  /* Avoid libcurl magic numbers */
+#ifdef CURL_READFUNC_PAUSE
+  if (CURL_READFUNC_ABORT == to_fill)
+    to_fill -= 2;
+#endif /* CURL_READFUNC_PAUSE */
+#ifdef CURL_READFUNC_ABORT
+  if (CURL_READFUNC_ABORT == to_fill)
+    --to_fill;
+#endif /* CURL_READFUNC_ABORT */
+
+  memcpy (stream, put_data + cbc->up_pos, to_fill);
+  cbc->up_pos += to_fill;
+  return to_fill;
+}
+
+
+static int
+libcurl_debug_cb (CURL *handle,
+                  curl_infotype type,
+                  char *data,
+                  size_t size,
+                  void *userptr)
+{
+  static const char excess_mark[] = "Excess found";
+  static const size_t excess_mark_len = MHD_STATICSTR_LEN_ (excess_mark);
+
+  (void) handle;
+  (void) userptr;
+
+#ifdef _DEBUG
+  switch (type)
+  {
+  case CURLINFO_TEXT:
+    fprintf (stderr, "* %.*s", (int) size, data);
+    break;
+  case CURLINFO_HEADER_IN:
+    fprintf (stderr, "< %.*s", (int) size, data);
+    break;
+  case CURLINFO_HEADER_OUT:
+    fprintf (stderr, "> %.*s", (int) size, data);
+    break;
+  case CURLINFO_DATA_IN:
+#if 0
+    fprintf (stderr, "<| %.*s\n", (int) size, data);
+#endif
+    break;
+  case CURLINFO_DATA_OUT:
+  case CURLINFO_SSL_DATA_IN:
+  case CURLINFO_SSL_DATA_OUT:
+  case CURLINFO_END:
+  default:
+    break;
+  }
+#endif /* _DEBUG */
+  if (CURLINFO_TEXT == type)
+  {
+    if ((size >= excess_mark_len) &&
+        (0 == memcmp (data, excess_mark, excess_mark_len)))
+      mhdErrorExitDesc ("Extra data has been detected in MHD reply");
+  }
+  return 0;
+}
+
+
+static CURL *
+setupCURL (void *cbc, uint16_t port,
+           struct headers_check_result *hdr_chk_result)
+{
+  CURL *c;
+
+  c = curl_easy_init ();
+  if (NULL == c)
+    libcurlErrorExitDesc ("curl_easy_init() failed");
+
+  if ((CURLE_OK != curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1L)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_WRITEFUNCTION,
+                                     &copyBuffer)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_WRITEDATA, cbc)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT,
+                                     ((long) TIMEOUTS_VAL))) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_HTTP_VERSION,
+                                     (oneone) ?
+                                     CURL_HTTP_VERSION_1_1 :
+                                     CURL_HTTP_VERSION_1_0)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_TIMEOUT,
+                                     ((long) TIMEOUTS_VAL))) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_HEADERFUNCTION,
+                                     lcurl_hdr_callback)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_HEADERDATA,
+                                     hdr_chk_result)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_ERRORBUFFER,
+                                     libcurl_errbuf)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_FAILONERROR, 0L)) ||
+#ifdef _DEBUG
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_VERBOSE, 1L)) ||
+#endif /* _DEBUG */
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_DEBUGFUNCTION,
+                                     &libcurl_debug_cb)) ||
+#if CURL_AT_LEAST_VERSION (7, 19, 4)
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_PROTOCOLS, CURLPROTO_HTTP)) ||
+#endif /* CURL_AT_LEAST_VERSION (7, 19, 4) */
+#if CURL_AT_LEAST_VERSION (7, 45, 0)
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_DEFAULT_PROTOCOL, "http")) ||
+#endif /* CURL_AT_LEAST_VERSION (7, 45, 0) */
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_URL,
+                                     URL_SCHEME_HOST_PATH)) ||
+      (CURLE_OK != curl_easy_setopt (c, CURLOPT_PORT, ((long) port))))
+    libcurlErrorExitDesc ("curl_easy_setopt() failed");
+
+  if (CURLE_OK != curl_easy_setopt (c, CURLOPT_HTTPHEADER, libcurl_headers))
+    libcurlErrorExitDesc ("Failed to set request headers");
+
+  if (use_put)
+  {
+    if ((CURLE_OK != curl_easy_setopt (c, CURLOPT_UPLOAD, 1L)) ||
+        (CURLE_OK != curl_easy_setopt (c, CURLOPT_READFUNCTION,
+                                       libcurlUploadDataCB)) ||
+        (CURLE_OK != curl_easy_setopt (c, CURLOPT_READDATA,
+                                       cbc)))
+      libcurlErrorExitDesc ("Failed to configure the PUT upload");
+  }
+
+  return c;
+}
+
+
+struct ahc_cls_type
+{
+  const char *rq_method;
+  const char *rq_url;
+
+  unsigned int num_req;
+  /* Position in the upload data, not compatible with parallel requests */
+  size_t up_pos;
+  size_t expected_upload_size;
+  unsigned int req_check_error;
+};
+
+
+static enum MHD_Result
+ahcCheck (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 **req_cls)
+{
+  static int marker;
+  struct MHD_Response *response;
+  enum MHD_Result ret;
+  struct ahc_cls_type *const param = (struct ahc_cls_type *) cls;
+
+  if (NULL == param)
+    mhdErrorExitDesc ("cls parameter is NULL");
+
+  if (oneone)
+  {
+    if (0 != strcmp (version, MHD_HTTP_VERSION_1_1))
+      mhdErrorExitDesc ("Unexpected HTTP version");
+  }
+  else
+  {
+    if (0 != strcmp (version, MHD_HTTP_VERSION_1_0))
+      mhdErrorExitDesc ("Unexpected HTTP version");
+  }
+
+  if (0 != strcmp (url, param->rq_url))
+    mhdErrorExitDesc ("Unexpected URI");
+
+  if (0 != strcmp (param->rq_method, method))
+    mhdErrorExitDesc ("Unexpected request method");
+
+  if (NULL == upload_data_size)
+    mhdErrorExitDesc ("'upload_data_size' pointer is NULL");
+
+  if (NULL != upload_data)
+  {
+    size_t report_processed_size;
+    if (0 == *upload_data_size)
+      mhdErrorExitDesc ("'*upload_data_size' value is zero");
+    report_processed_size = *upload_data_size;
+    /* The next checks are not compatible with parallel requests */
+    if (*upload_data_size > param->expected_upload_size - param->up_pos)
+    {
+      fprintf (stderr, "Unexpected *upload_data_size value: %lu. "
+               "Already processed data size: %lu. "
+               "Total expected upload size: %lu. "
+               "Expected unprocessed upload size: %lu. "
+               "The upload data cannot be checked.\n",
+               (unsigned long) *upload_data_size,
+               (unsigned long) param->up_pos,
+               (unsigned long) param->expected_upload_size,
+               (unsigned long) (param->expected_upload_size - param->up_pos));
+      param->req_check_error++;
+    }
+    else
+    {
+      if (0 != memcmp (upload_data, put_data + param->up_pos,
+                       *upload_data_size))
+      {
+        fprintf (stderr, "Wrong upload data.\n"
+                 "Expected: '%.*s'\n"
+                 "Received: '%.*s'.\n",
+                 (int) *upload_data_size, upload_data,
+                 (int) *upload_data_size, put_data + param->up_pos);
+        param->req_check_error++;
+      }
+      if (use_put_large &&
+          (report_processed_size > param->expected_upload_size / 10))
+        report_processed_size = param->expected_upload_size / 10;
+
+      param->up_pos += report_processed_size;
+    }
+    *upload_data_size -= report_processed_size;
+    return MHD_YES;
+  }
+  else
+  {
+    if (0 != *upload_data_size)
+      mhdErrorExitDesc ("'*upload_data_size' value is not zero");
+  }
+
+  if (1)
+  {
+    /* Check headers */
+    const char *value;
+    size_t value_len;
+    unsigned int header_check_error;
+
+    header_check_error = 0;
+
+    value = MHD_lookup_connection_value (connection, MHD_HEADER_KIND,
+                                         RQ_HEADER1_NAME);
+    if (NULL == value)
+    {
+      fprintf (stderr, "Request header '" RQ_HEADER1_NAME "' not found.\n");
+      header_check_error++;
+    }
+    else
+    {
+      if (0 != strcmp (value, RQ_HEADER1_VALUE))
+      {
+        fprintf (stderr, "Wrong header '" RQ_HEADER1_NAME "'value. "
+                 "Expected: '%s'. Received: '%s'.\n",
+                 RQ_HEADER1_VALUE, value);
+        header_check_error++;
+      }
+    }
+
+    if (MHD_YES !=
+        MHD_lookup_connection_value_n (connection, MHD_HEADER_KIND,
+                                       RQ_HEADER2_NAME,
+                                       MHD_STATICSTR_LEN_ (RQ_HEADER2_NAME),
+                                       &value, &value_len))
+    {
+      fprintf (stderr, "Request header '" RQ_HEADER2_NAME "' not found.\n");
+      header_check_error++;
+    }
+    else
+    {
+      if (NULL == value)
+        mhdErrorExitDesc ("The 'value' pointer is NULL");
+      if (strlen (value) != value_len)
+        mhdErrorExitDesc ("The 'value' length does not match strlen(value)");
+
+      if (value_len < MHD_STATICSTR_LEN_ (RQ_HEADER2_VALUE_S)
+          + MHD_STATICSTR_LEN_ (RQ_HEADER2_VALUE_E))
+      {
+        fprintf (stderr, "The value_len is too short. The value: '%s'.\n",
+                 value);
+        header_check_error++;
+      }
+      if (0 != memcmp (value, RQ_HEADER2_VALUE_S,
+                       MHD_STATICSTR_LEN_ (RQ_HEADER2_VALUE_S)))
+      {
+        fprintf (stderr, "The 'value' does not start with '"
+                 RQ_HEADER2_VALUE_S "'. The 'value' is '%s'. ",
+                 value);
+        header_check_error++;
+      }
+      if (0 != memcmp (value
+                       + value_len - MHD_STATICSTR_LEN_ (RQ_HEADER2_VALUE_E),
+                       RQ_HEADER2_VALUE_E,
+                       MHD_STATICSTR_LEN_ (RQ_HEADER2_VALUE_E)))
+      {
+        fprintf (stderr, "The 'value' does not end with '"
+                 RQ_HEADER2_VALUE_E "'. The 'value' is '%s'. ",
+                 value);
+        header_check_error++;
+      }
+    }
+
+    value = MHD_lookup_connection_value (connection, MHD_HEADER_KIND,
+                                         RQ_HEADER3_NAME);
+    if (NULL == value)
+    {
+      fprintf (stderr, "Request header '" RQ_HEADER3_NAME "' not found.\n");
+      header_check_error++;
+    }
+    else
+    {
+      if (0 != strcmp (value, RQ_HEADER3_VALUE))
+      {
+        fprintf (stderr, "Wrong header '" RQ_HEADER3_NAME "'value. "
+                 "Expected: '%s'. Received: '%s'.\n",
+                 RQ_HEADER3_VALUE, value);
+        header_check_error++;
+      }
+    }
+    param->req_check_error += header_check_error;
+  }
+
+  if (&marker != *req_cls)
+  {
+    *req_cls = &marker;
+    if (param->num_req)
+      mhdErrorExitDesc ("Got unexpected second request");
+    param->num_req++;
+    return MHD_YES;
+  }
+  *req_cls = NULL;
+
+  if (0 != strcmp (url, EXPECTED_URI_BASE_PATH))
+  {
+    fprintf (stderr, "Unexpected URI: '%s'. ", url);
+    mhdErrorExitDesc ("Unexpected URI found");
+  }
+
+  response =
+    MHD_create_response_from_buffer_static (MHD_STATICSTR_LEN_ (PAGE),
+                                            PAGE);
+  if (NULL == response)
+    mhdErrorExitDesc ("Failed to create response");
+
+  if (MHD_YES != MHD_add_response_header (response,
+                                          RP_HEADER1_NAME,
+                                          RP_HEADER1_VALUE))
+    mhdErrorExitDesc ("Cannot add header1");
+  if (MHD_YES != MHD_add_response_header (response,
+                                          RP_HEADER2_NAME,
+                                          RP_HEADER2_VALUE))
+    mhdErrorExitDesc ("Cannot add header2");
+
+  ret = MHD_queue_response (connection,
+                            MHD_HTTP_OK,
+                            response);
+  MHD_destroy_response (response);
+  if (MHD_YES != ret)
+    mhdErrorExitDesc ("Failed to queue response");
+
+  return ret;
+}
+
+
+static CURLcode
+performQueryExternal (struct MHD_Daemon *d, CURL *c, CURLM **multi_reuse)
+{
+  CURLM *multi;
+  time_t start;
+  struct timeval tv;
+  CURLcode ret;
+  int libcurl_finished;
+
+  ret = CURLE_FAILED_INIT; /* will be replaced with real result */
+  if (NULL != *multi_reuse)
+    multi = *multi_reuse;
+  else
+  {
+    multi = curl_multi_init ();
+    if (multi == NULL)
+      libcurlErrorExitDesc ("curl_multi_init() failed");
+    *multi_reuse = multi;
+  }
+  if (CURLM_OK != curl_multi_add_handle (multi, c))
+    libcurlErrorExitDesc ("curl_multi_add_handle() failed");
+  libcurl_finished = 0;
+
+  start = time (NULL);
+  while (time (NULL) - start <= TIMEOUTS_VAL)
+  {
+    fd_set rs;
+    fd_set ws;
+    fd_set es;
+    MHD_socket maxMhdSk;
+    int maxCurlSk;
+
+    maxMhdSk = MHD_INVALID_SOCKET;
+    maxCurlSk = -1;
+    FD_ZERO (&rs);
+    FD_ZERO (&ws);
+    FD_ZERO (&es);
+    if (! libcurl_finished)
+    {
+      int running;
+      curl_multi_perform (multi, &running);
+      if (0 == running)
+      {
+        struct CURLMsg *msg;
+        int msgLeft;
+        int totalMsgs = 0;
+        do
+        {
+          msg = curl_multi_info_read (multi, &msgLeft);
+          if (NULL == msg)
+            libcurlErrorExitDesc ("curl_multi_info_read() failed");
+          totalMsgs++;
+          if (CURLMSG_DONE == msg->msg)
+            ret = msg->data.result;
+        } while (msgLeft > 0);
+        if (1 != totalMsgs)
+        {
+          fprintf (stderr,
+                   "curl_multi_info_read returned wrong "
+                   "number of results (%d).\n",
+                   totalMsgs);
+          externalErrorExit ();
+        }
+        curl_multi_remove_handle (multi, c);
+        libcurl_finished = ! 0;
+      }
+      else
+      {
+        if (CURLM_OK != curl_multi_fdset (multi, &rs, &ws, &es, &maxCurlSk))
+          libcurlErrorExitDesc ("curl_multi_fdset() failed");
+      }
+    }
+    if (libcurl_finished)
+    { /* libcurl has finished, check whether MHD still needs to perform cleanup */
+      if (0 != MHD_get_timeout64s (d))
+        break; /* MHD finished as well */
+    }
+    if (MHD_YES != MHD_get_fdset (d, &rs, &ws, &es, &maxMhdSk))
+      mhdErrorExitDesc ("MHD_get_fdset() failed");
+    tv.tv_sec = 0;
+    tv.tv_usec = 200000;
+    if (0 == MHD_get_timeout64s (d))
+      tv.tv_usec = 0;
+    else
+    {
+      long curl_to = -1;
+      curl_multi_timeout (multi, &curl_to);
+      if (0 == curl_to)
+        tv.tv_usec = 0;
+    }
+#ifdef MHD_POSIX_SOCKETS
+    if (maxMhdSk > maxCurlSk)
+      maxCurlSk = maxMhdSk;
+#endif /* MHD_POSIX_SOCKETS */
+    if (-1 == select (maxCurlSk + 1, &rs, &ws, &es, &tv))
+    {
+#ifdef MHD_POSIX_SOCKETS
+      if (EINTR != errno)
+        externalErrorExitDesc ("Unexpected select() error");
+#else
+      if ((WSAEINVAL != WSAGetLastError ()) ||
+          (0 != rs.fd_count) || (0 != ws.fd_count) || (0 != es.fd_count) )
+        externalErrorExitDesc ("Unexpected select() error");
+      Sleep ((unsigned long) tv.tv_usec / 1000);
+#endif
+    }
+    if (MHD_YES != MHD_run_from_select (d, &rs, &ws, &es))
+      mhdErrorExitDesc ("MHD_run_from_select() failed");
+  }
+
+  return ret;
+}
+
+
+/**
+ * Check request result
+ * @param curl_code the CURL easy return code
+ * @param pcbc the pointer struct CBC
+ * @return non-zero if success, zero if failed
+ */
+static unsigned int
+check_result (CURLcode curl_code, CURL *c, long expected_code,
+              struct CBC *pcbc, struct headers_check_result *hdr_res,
+              struct ahc_cls_type *ahc_cls)
+{
+  long code;
+  unsigned int ret;
+
+  fflush (stderr);
+  fflush (stdout);
+  if (CURLE_OK != curl_code)
+  {
+    fflush (stdout);
+    if (0 != libcurl_errbuf[0])
+      fprintf (stderr, "Request failed. "
+               "libcurl error: '%s'.\n"
+               "libcurl error description: '%s'.\n",
+               curl_easy_strerror (curl_code),
+               libcurl_errbuf);
+    else
+      fprintf (stderr, "Request failed. "
+               "libcurl error: '%s'.\n",
+               curl_easy_strerror (curl_code));
+    return 0;
+  }
+
+  if (CURLE_OK != curl_easy_getinfo (c, CURLINFO_RESPONSE_CODE, &code))
+    libcurlErrorExit ();
+
+  if (expected_code != code)
+  {
+    fprintf (stderr, "The response has wrong HTTP code: %ld\tExpected: %ld.\n",
+             code, expected_code);
+    return 0;
+  }
+  else if (verbose)
+    printf ("The response has expected HTTP code: %ld\n", expected_code);
+
+  ret = 1;
+
+  if (ahc_cls->req_check_error)
+  {
+    fprintf (stderr, "One or more errors have been detected by access "
+             "handler callback.\n");
+    ret = 0;
+  }
+  if (ahc_cls->expected_upload_size != ahc_cls->up_pos)
+  {
+    fprintf (stderr, "Upload size does not match expected. "
+             "Expected: %lu. "
+             "Received: %lu.\n",
+             (unsigned long) ahc_cls->expected_upload_size,
+             (unsigned long) ahc_cls->up_pos);
+    ret = 0;
+  }
+
+  if (1 != hdr_res->header1_found)
+  {
+    if (0 == hdr_res->header1_found)
+      fprintf (stderr, "Response header1 was not found.\n");
+    else
+      fprintf (stderr, "Response header1 was found %d times "
+               "instead of one time only.\n", hdr_res->header1_found);
+    ret = 0;
+  }
+  else if (verbose)
+    printf ("Header1 is present in the response.\n");
+  if (1 != hdr_res->header2_found)
+  {
+    if (0 == hdr_res->header2_found)
+      fprintf (stderr, "Response header2 was not found.\n");
+    else
+      fprintf (stderr, "Response header2 was found %d times "
+               "instead of one time only.\n", hdr_res->header2_found);
+    ret = 0;
+  }
+  else if (verbose)
+    printf ("Header2 is present in the response.\n");
+  if (1 != hdr_res->size_found)
+  {
+    if (0 == hdr_res->size_found)
+      fprintf (stderr, "Correct response 'Content-Length' header "
+               "was not found.\n");
+    else
+      fprintf (stderr, "Correct response 'Content-Length' header "
+               "was found %u times instead of one time only.\n",
+               hdr_res->size_found);
+    ret = 0;
+  }
+  else if (verbose)
+    printf ("'Content-Length' header with correct value "
+            "is present in the response.\n");
+  if (0 != hdr_res->size_broken_found)
+  {
+    fprintf (stderr, "Wrong response 'Content-Length' header was found "
+             "%u times.\n", hdr_res->size_broken_found);
+    ret = 0;
+  }
+
+  if (pcbc->dn_pos != MHD_STATICSTR_LEN_ (PAGE))
+  {
+    fprintf (stderr, "Got %u bytes ('%.*s'), expected %u bytes. ",
+             (unsigned) pcbc->dn_pos, (int) pcbc->dn_pos, pcbc->dn_buf,
+             (unsigned) MHD_STATICSTR_LEN_ (PAGE));
+    mhdErrorExitDesc ("Wrong returned data length");
+  }
+  if (0 != memcmp (PAGE, pcbc->dn_buf, pcbc->dn_pos))
+  {
+    fprintf (stderr, "Got invalid response '%.*s'. ",
+             (int) pcbc->dn_pos, pcbc->dn_buf);
+    mhdErrorExitDesc ("Wrong returned data");
+  }
+  fflush (stderr);
+  fflush (stdout);
+  return ret;
+}
+
+
+static unsigned int
+performCheck (void)
+{
+  struct MHD_Daemon *d;
+  uint16_t port;
+  struct CBC cbc;
+  struct ahc_cls_type ahc_param;
+  struct headers_check_result rp_headers_check;
+  char buf[2048];
+  CURL *c;
+  CURLM *multi_reuse;
+  int failed = 0;
+
+  if (MHD_NO != MHD_is_feature_supported (MHD_FEATURE_AUTODETECT_BIND_PORT))
+    port = 0;
+  else
+  {
+    port =  UINT16_C (4220);
+    if (! oneone)
+      port += UINT16_C (1);
+    if (use_put)
+      port += UINT16_C (2);
+    if (use_put_large)
+      port += UINT16_C (4);
+    port = (uint16_t) 4220;
+  }
+
+  if (1)
+  {
+    size_t mem_limit;
+    if (use_put_large)
+      mem_limit = (size_t) (TEST_UPLOAD_DATA_SIZE / 2 + HEADERS_POINTERS_SIZE);
+    else
+      mem_limit = (size_t) ((TEST_UPLOAD_DATA_SIZE * 4) / 3 + 2 +
+                            HEADERS_POINTERS_SIZE);
+
+    d = MHD_start_daemon (MHD_USE_ERROR_LOG,
+                          port, NULL, NULL,
+                          &ahcCheck, &ahc_param,
+                          MHD_OPTION_CONNECTION_MEMORY_LIMIT, mem_limit,
+                          MHD_OPTION_END);
+  }
+  if (d == NULL)
+    return 1;
+  if (0 == port)
+  {
+    const union MHD_DaemonInfo *dinfo;
+
+    dinfo = MHD_get_daemon_info (d,
+                                 MHD_DAEMON_INFO_BIND_PORT);
+    if ( (NULL == dinfo) ||
+         (0 == dinfo->port) )
+      mhdErrorExitDesc ("MHD_get_daemon_info() failed");
+    port = dinfo->port;
+  }
+
+  /* First request */
+  ahc_param.rq_method = use_put ? MHD_HTTP_METHOD_PUT : MHD_HTTP_METHOD_GET;
+  ahc_param.rq_url = EXPECTED_URI_BASE_PATH;
+  ahc_param.expected_upload_size = use_put ? TEST_UPLOAD_DATA_SIZE : 0;
+  ahc_param.req_check_error = 0;
+  ahc_param.num_req = 0;
+  ahc_param.up_pos = 0;
+  rp_headers_check.expected_size = MHD_STATICSTR_LEN_ (PAGE);
+  rp_headers_check.header1_found = 0;
+  rp_headers_check.header2_found = 0;
+  rp_headers_check.size_found = 0;
+  rp_headers_check.size_broken_found = 0;
+  cbc.dn_buf = buf;
+  cbc.dn_buf_size = sizeof (buf);
+  cbc.dn_pos = 0;
+  memset (cbc.dn_buf, 0, cbc.dn_buf_size);
+  cbc.up_size = TEST_UPLOAD_DATA_SIZE;
+  cbc.up_pos = 0;
+  c = setupCURL (&cbc, port, &rp_headers_check);
+  multi_reuse = NULL;
+  /* First request */
+  if (check_result (performQueryExternal (d, c, &multi_reuse), c,
+                    MHD_HTTP_OK, &cbc, &rp_headers_check, &ahc_param))
+  {
+    fflush (stderr);
+    if (verbose)
+      printf ("Got first expected response.\n");
+    fflush (stdout);
+  }
+  else
+  {
+    fprintf (stderr, "First request FAILED.\n");
+    fflush (stderr);
+    failed = 1;
+  }
+  /* Second request */
+  ahc_param.req_check_error = 0;
+  ahc_param.num_req = 0;
+  ahc_param.up_pos = 0;
+  rp_headers_check.header1_found = 0;
+  rp_headers_check.header2_found = 0;
+  rp_headers_check.size_found = 0;
+  rp_headers_check.size_broken_found = 0;
+  /* Reset buffer position */
+  cbc.dn_pos = 0;
+  memset (cbc.dn_buf, 0, cbc.dn_buf_size);
+  cbc.up_pos = 0;
+  if (check_result (performQueryExternal (d, c, &multi_reuse), c,
+                    MHD_HTTP_OK, &cbc, &rp_headers_check, &ahc_param))
+  {
+    fflush (stderr);
+    if (verbose)
+      printf ("Got second expected response.\n");
+    fflush (stdout);
+  }
+  else
+  {
+    fprintf (stderr, "Second request FAILED.\n");
+    fflush (stderr);
+    failed = 1;
+  }
+  /* Third request */
+  ahc_param.req_check_error = 0;
+  ahc_param.num_req = 0;
+  ahc_param.up_pos = 0;
+  rp_headers_check.header1_found = 0;
+  rp_headers_check.header2_found = 0;
+  rp_headers_check.size_found = 0;
+  rp_headers_check.size_broken_found = 0;
+  /* Reset buffer position */
+  cbc.dn_pos = 0;
+  memset (cbc.dn_buf, 0, cbc.dn_buf_size);
+  cbc.up_pos = 0;
+  if (NULL != multi_reuse)
+    curl_multi_cleanup (multi_reuse);
+  multi_reuse = NULL; /* Force new connection */
+  if (check_result (performQueryExternal (d, c, &multi_reuse), c,
+                    MHD_HTTP_OK, &cbc, &rp_headers_check, &ahc_param))
+  {
+    fflush (stderr);
+    if (verbose)
+      printf ("Got third expected response.\n");
+    fflush (stdout);
+  }
+  else
+  {
+    fprintf (stderr, "Third request FAILED.\n");
+    fflush (stderr);
+    failed = 1;
+  }
+
+  curl_easy_cleanup (c);
+  if (NULL != multi_reuse)
+    curl_multi_cleanup (multi_reuse);
+
+  MHD_stop_daemon (d);
+  return failed ? 1 : 0;
+}
+
+
+int
+main (int argc, char *const *argv)
+{
+  unsigned int errorCount = 0;
+
+  /* Test type and test parameters */
+  verbose = ! (has_param (argc, argv, "-q") ||
+               has_param (argc, argv, "--quiet") ||
+               has_param (argc, argv, "-s") ||
+               has_param (argc, argv, "--silent"));
+  oneone = ! has_in_name (argv[0], "10");
+
+  use_get = has_in_name (argv[0], "_get");
+  use_put = has_in_name (argv[0], "_put");
+
+  use_put_large = has_in_name (argv[0], "_put_large");
+
+  if (1 !=
+      ((use_get ? 1 : 0) + (use_put ? 1 : 0)))
+  {
+    fprintf (stderr, "Wrong test name '%s': no or multiple indications "
+             "for the test type.\n", argv[0] ? argv[0] : "(NULL)");
+    return 99;
+  }
+
+  test_global_init ();
+
+  errorCount += performCheck ();
+  if (errorCount != 0)
+    fprintf (stderr, "Error (code: %u)\n", errorCount);
+  test_global_cleanup ();
+  return (0 == errorCount) ? 0 : 1;       /* 0 == pass */
+}