1 files changed, 1084 insertions, 0 deletions

diff --git a/src/scalarproduct/test_vectorproduct_api_4peers.c b/src/scalarproduct/test_vectorproduct_api_4peers.c
new file mode 100644
index 000000000..73ab634f9
--- /dev/null
+++ b/src/scalarproduct/test_vectorproduct_api_4peers.c
@@ -0,0 +1,1084 @@
+
+/*
+     This file is part of GNUnet.
+     (C) 2013 Christian Grothoff (and other contributing authors)
+
+     GNUnet 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 3, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * AIM OF THIS TEST
+ * 
+ * The aim for the extended test is to verify the queuing functionality in the 
+ * service and the API. The API queues requests received from the clients. The 
+ * service queues requests that are received from other services.
+ * 
+ * To test this, we create 4 peers. peer1 and peer2 are designated responders, 
+ * and peer3 and peer4 are designated as requesters. Each peer calls API for the
+ * vectorproduct service accordingly.
+ * 
+ * * peer1 tells the service to prepare response for requests with keys 
+ *   input_key_p1_p3(shared key b/w peer1 and peer3) and input_key_p1_p4. 
+ *   Similarly peer2 tells service to prepare response for requests with keys 
+ *   input_key_p2_p3, and input_key_p2_p4.
+ * * Simultaneously, peer3 tells its service to send a request to peer1 with key
+ *   input_key_p1_p3, and a request to peer2 with key input_key_p2_p3. Similarly, 
+ *   peer 4 sends requests with appropriate keys.
+ * 
+ * Each peer sends 2 requests to its service, which tests the queuing in API. 
+ * Each service receives 2 requests from other service, which tests the queuing 
+ * functionality in the service.
+ */
+
+
+/**
+ * @file vectorproduct/test_vectorproduct_api_4peers.c
+ * @brief Vectorproduct API testing between 4 peers using testing API
+ * @author Gaurav Kukreja
+ * @author Christian Fuchs
+ */
+
+#include <string.h>
+
+#include <inttypes.h>
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_testbed_service.h"
+#include "gnunet_common.h"
+#include "gnunet_vectorproduct_service.h"
+#include "gnunet_protocols.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "test-vectorproduct-api-4peers",__VA_ARGS__)
+
+#define NUM_PEERS 4
+
+/**
+ * Structure for holding peer's sockets and IO Handles
+ */
+struct PeerData
+{
+  /**
+   * Handle to testbed peer
+   */
+  struct GNUNET_TESTBED_Peer *peer;
+
+  /**
+   * The service connect operation to stream
+   */
+  struct GNUNET_TESTBED_Operation *op;
+
+  /**
+   * Our Peer id
+   */
+  struct GNUNET_PeerIdentity our_id;
+
+  /**
+   * Pointer to Vector Product Handle
+   */
+  struct GNUNET_VECTORPRODUCT_Handle *vh;
+
+  /**
+   * Input elements for peer
+   */
+  char * input_elements;
+
+  /**
+   * Input Mask for peer
+   */
+  char * input_mask;
+
+  /**
+   * 2 Input keys for peer for 2 sessions of each peer
+   */
+  char * input_keys[2];
+
+  /**
+   * Number of requests(or prepare_response) sent by the peer
+   */
+  int request_num;
+
+  /**
+   * Number of callbacks received by the peer
+   */
+  int callback_num;
+
+  /**
+   * PeerData of the peers, this peer will talk to 
+   */
+  struct PeerData * peers[2];
+
+
+};
+
+/**
+ * Different states in test setup
+ */
+enum SetupState
+{
+  /**
+   * Get the identity of peer 1
+   */
+  PEER1_GET_IDENTITY,
+
+  /**
+   * Get the identity of peer 2
+   */
+  PEER2_GET_IDENTITY,
+
+  /**
+   * Get the identity of peer 3
+   */
+  PEER3_GET_IDENTITY,
+
+  /**
+   * Get the identity of peer 4
+   */
+  PEER4_GET_IDENTITY,
+
+  /**
+   * Connect to stream service of peer 1
+   */
+  PEER1_VECTORPRODUCT_CONNECT,
+
+  /**
+   * Connect to stream service of peer 2
+   */
+  PEER2_VECTORPRODUCT_CONNECT,
+
+  /**
+   * Connect to stream service of peer 3
+   */
+  PEER3_VECTORPRODUCT_CONNECT,
+
+  /**
+   * Connect to stream service of peer 4
+   */
+  PEER4_VECTORPRODUCT_CONNECT
+
+};
+
+/******************************************************************************
+ *** Global Variables                            *****************************
+ ******************************************************************************/
+
+/**
+ * Maximum allowed message-ids we can check in one go (with one GNUNET_message)
+ */
+static unsigned int max_mids;
+
+/**
+ * Session Key used by both the test peers
+ */
+char input_key_p1_p3[103] = "111111111111111111111111111111111111111111111111113333333333333333333333333333333333333333333333333333";
+
+/**
+ * Session Key used by both the test peers
+ */
+char input_key_p1_p4[103] = "111111111111111111111111111111111111111111111111114444444444444444444444444444444444444444444444444444";
+
+/**
+ * Session Key used by both the test peers
+ */
+char input_key_p2_p3[103] = "222222222222222222222222222222222222222222222222223333333333333333333333333333333333333333333333333333";
+
+/**
+ * Session Key used by both the test peers
+ */
+char input_key_p2_p4[103] = "222222222222222222222222222222222222222222222222224444444444444444444444444444444444444444444444444444";
+
+/**
+ * Input elements for peer1
+ */
+//char input_elements_peer1[] = "11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11";
+char input_elements_peer1[] = "11,11,11";
+
+/**
+ * Input Mask for peer 1
+ */
+//char input_mask_peer1[] = "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
+char input_mask_peer1[] = "1,1,1";
+
+/**
+ * Input elements for peer2
+ */
+//char input_elements_peer2[] = "11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11";
+char input_elements_peer2[] = "11,11,11";
+/**
+ * Input Mask for peer 2
+ */
+//char input_mask_peer2[] = "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
+char input_mask_peer2[] = "1,1,1";
+
+/**
+ * Input elements for peer3
+ */
+//char input_elements_peer3[] = "11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11";
+char input_elements_peer3[] = "11,11,11";
+
+/**
+ * Input Mask for peer 3
+ */
+//char input_mask_peer3[] = "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
+char input_mask_peer3[] = "1,1,1";
+
+/**
+ * Input elements for peer4
+ */
+//char input_elements_peer4[] = "11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11";
+char input_elements_peer4[] = "11,11,11";
+/**
+ * Input Mask for peer 4
+ */
+//char input_mask_peer4[] = "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
+char input_mask_peer4[] = "1,1,1";
+
+
+/**
+ * Data context for peer 1
+ */
+static struct PeerData peer1;
+
+/**
+ * Data context for peer 2
+ */
+static struct PeerData peer2;
+
+/**
+ * Data context for peer 3
+ */
+static struct PeerData peer3;
+
+/**
+ * Data context for peer 4
+ */
+static struct PeerData peer4;
+
+/**
+ * Various states during test setup
+ */
+static enum SetupState setup_state;
+
+/**
+ * Testbed operation handle
+ */
+static struct GNUNET_TESTBED_Operation *op;
+
+/**
+ * Return value for the test
+ */
+static int ok;
+
+/**
+ * Abort Task for timeout
+ */
+static GNUNET_SCHEDULER_TaskIdentifier abort_task;
+/******************************************************************************
+ *** Static Functions                             *****************************
+ ******************************************************************************/
+
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+/**
+ * Close sockets and stop testing deamons nicely
+ */
+static void
+do_close (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  if (peer1.op != NULL)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, &peer1);
+
+  if (peer2.op != NULL)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, &peer2);
+
+  if (peer3.op != NULL)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, &peer3);
+
+  if (peer4.op != NULL)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, &peer4);
+
+  if (GNUNET_SCHEDULER_NO_TASK != abort_task)
+    GNUNET_SCHEDULER_cancel (abort_task);
+
+  GNUNET_SCHEDULER_shutdown (); /* For shutting down testbed */
+}
+
+
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  static int shutdown;
+  shutdown++;
+  struct PeerData* peer = (struct PeerData*) cls;
+
+  if (peer == &peer1)
+    LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down Peer 1!!! \n");
+  else if (peer == &peer2)
+    LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down Peer 2!!! \n");
+  else if (peer == &peer3)
+    LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down Peer 3!!! \n");
+  else if (peer == &peer4)
+    LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down Peer 4!!! \n");
+
+  // peer->op contains handle to the TESTBED_connect_service operation
+  // calling operation done, leads to call to vectorproduct_da
+  GNUNET_TESTBED_operation_done (peer->op);
+  peer->op = NULL;
+
+  if (shutdown == 4)
+    GNUNET_SCHEDULER_add_now (&do_close, NULL);
+}
+
+
+/**
+ * Something went wrong and timed out. Kill everything and set error flag
+ */
+static void
+do_abort (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "test: ABORT due to Timeout\n");
+  ok = GNUNET_SYSERR;
+  abort_task = 0;
+  do_close (cls, tc);
+}
+
+
+/**
+ * Controller event callback
+ *
+ * @param cls NULL
+ * @param event the controller event
+ */
+static void
+controller_event_cb (void *cls,
+                     const struct GNUNET_TESTBED_EventInformation *event)
+{
+  switch (event->type)
+    {
+    case GNUNET_TESTBED_ET_OPERATION_FINISHED:
+      switch (setup_state)
+        {
+        case PEER1_VECTORPRODUCT_CONNECT:
+        case PEER2_VECTORPRODUCT_CONNECT:
+          GNUNET_assert (NULL == event->details.operation_finished.emsg);
+          break;
+        default:
+          GNUNET_assert (0);
+        }
+      break;
+    default:
+      GNUNET_assert (0);
+    }
+}
+
+
+static void
+responder_callback (void *cls,
+                    const struct GNUNET_HashCode * key,
+                    enum GNUNET_VECTORPRODUCT_ResponseStatus status)
+{
+  struct PeerData * peer = cls;
+
+  peer->callback_num++;
+
+  if (peer == &peer1)
+    {
+        LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer1 received callback!!!\n");
+    }
+  else if (peer == &peer2)
+    {
+        LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer2 received callback!!!\n");
+    }
+  else
+    LOG (GNUNET_ERROR_TYPE_ERROR, "Requester callback received, but peer is neither peer1 nor peer2!!!\n");
+
+
+  if (status == GNUNET_VECTORPRODUCT_Status_Failure)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Responder Client received status failure\n");
+      ok = -1;
+    }
+  else if (status == GNUNET_VECTORPRODUCT_Status_InvalidResponse)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Responder Client received status invalid response\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_Timeout == status)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Responder Client received timeout occured\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_ServiceDisconnected == status)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Responder Client received service disconnected!!\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_Success == status)
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG, "Responder Client expected response received!\n");
+      ok = 1;
+    }
+  else
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Responder Client status = %d!\n", (int) status);
+      ok = -1;
+    }
+
+  // TODO : Responder Session Complete. Shutdown Test Cleanly!!!
+  if (peer->callback_num == 2)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, peer);
+}
+
+
+static void
+requester_callback (void *cls,
+                    const struct GNUNET_HashCode * key,
+                    const struct GNUNET_PeerIdentity * peer,
+                    enum GNUNET_VECTORPRODUCT_ResponseStatus status,
+                    const struct GNUNET_VECTORPRODUCT_client_response *msg)
+{
+  struct PeerData * peer_ = cls;
+  uint32_t product_len;
+
+  peer_->callback_num++;
+  
+  if (peer_ == &peer3)
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer3 received callback!!!\n");
+    }
+  else if (peer_ == &peer4)
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer4 received callback!!!\n");
+    }
+  else
+    LOG (GNUNET_ERROR_TYPE_ERROR, "Requester callback received, but peer is neither peer3 nor peer4!!!\n");
+
+
+  if (status == GNUNET_VECTORPRODUCT_Status_Failure)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Requester Client received status failure\n");
+      ok = -1;
+    }
+  else if (status == GNUNET_VECTORPRODUCT_Status_InvalidResponse)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Requester Client received status invalid response\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_Timeout == status)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Requester Client timeout occured\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_ServiceDisconnected == status)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Requester Client service disconnected!!\n");
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_Success != status)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR, "Requester Client Status = %d\n", (int) status);
+      ok = -1;
+    }
+  else if (GNUNET_VECTORPRODUCT_Status_Success == status)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Requester client received status successful!\n");
+      product_len = ntohl (msg->product_length);
+
+      if (0 < product_len)
+        {
+          gcry_mpi_t result;
+          gcry_error_t ret = 0;
+          size_t read = 0;
+
+          ret = gcry_mpi_scan (&result, GCRYMPI_FMT_USG, (void*) &(msg[1]), product_len, &read);
+
+          if (0 != ret)
+            {
+              GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not convert to mpi to value!\n");
+            }
+          else
+            {
+              gcry_mpi_release (result);
+            }
+          ok = 1;
+        }
+      else
+        { 
+          //currently not used, but if we get more info due to MESH we will need this
+          LOG (GNUNET_ERROR_TYPE_ERROR, "Error during computation of vector product, return code: %d\n", product_len);
+          ok = -1;
+        }
+    }
+
+  if (peer_->callback_num == 2)
+    GNUNET_SCHEDULER_add_now (&do_shutdown, peer_);
+}
+
+
+static struct GNUNET_VECTORPRODUCT_QueueEntry *
+requester_request (char * input_elements,
+                   char * input_mask,
+                   char * input_key,
+                   struct PeerData * peer,
+                   struct PeerData * to_peer)
+{
+  
+
+  unsigned int i;
+  uint16_t element_count = 0;
+  int32_t * elements = NULL;
+  uint16_t mask_length = 0;
+  unsigned char * mask = NULL;
+  int32_t element;
+  struct GNUNET_VECTORPRODUCT_QueueEntry *qe;
+  struct GNUNET_HashCode key;
+  int exit_loop;
+  char * begin = input_elements;
+  char * end;
+  
+  GNUNET_assert (peer->vh != NULL);
+  
+  GNUNET_CRYPTO_hash_from_string (input_key, &key);
+  
+  exit_loop = 0;
+  /* Read input_elements, and put in elements array */
+  do
+    {
+      unsigned int mcount = element_count;
+      //ignore empty rows of ,,,,,,
+      while (*begin == ',')
+        begin++;
+      // get the length of the current element and replace , with null
+      for (end = begin; *end && *end != ','; end++);
+
+      if (*end == '\0')
+        exit_loop = 1;
+
+
+      if (1 != sscanf (begin, "%" SCNd32, &element))
+        {
+          FPRINTF (stderr, _ ("Could not convert `%s' to int32_t.\n"), begin);
+          ok = -1;
+          return NULL;
+        }
+      
+      GNUNET_array_append (elements, mcount, element);
+      element_count++;
+
+      begin = ++end;
+    }
+  while (!exit_loop && element_count < max_mids);
+  GNUNET_assert (elements != NULL);
+  GNUNET_assert (element_count >= 1);
+  
+  /* Read input_mask and read in mask array */
+  mask_length = element_count / 8 + (element_count % 8 ? 1 : 0);
+  mask = GNUNET_malloc ((element_count / 8) + 2);
+  GNUNET_assert (NULL != mask);
+  if (NULL != input_mask)
+    {
+      begin = input_mask;
+      unsigned short mask_count = 0;
+      int exit_loop = 0;
+
+      do
+        {
+          //ignore empty rows of ,,,,,,
+          while (* begin == ',')
+            begin++;
+          // get the length of the current element and replace , with null
+          // gnunet_ascii-armor uses base32, thus we can use , as separator!
+          for (end = begin; *end && *end != ','; end++);
+
+          if (*end == '\0')
+            exit_loop = 1;
+
+
+          if (1 != sscanf (begin, "%" SCNd32, &element))
+            {
+              FPRINTF (stderr, _ ("Could not convert `%s' to int32_t.\n"), begin);
+              ok = -1;
+              return NULL;
+            }
+
+          GNUNET_assert (mask_count <= element_count);
+
+          if (element)
+            mask[mask_count / 8] = mask[mask_count / 8] | 1 << (mask_count % 8);
+
+          mask_count++;
+          begin = ++end;
+        }
+      while (!exit_loop);
+      // +1 to see if we would have more data, which would indicate malformed/superficial input
+      GNUNET_assert (mask_count == element_count);
+    }
+  else
+    {
+      for (i = 0; i <= mask_length; i++)
+        mask[i] = UCHAR_MAX; // all 1's
+    }
+  
+  qe = GNUNET_VECTORPRODUCT_request (peer->vh,
+                                     &key,
+                                     &to_peer->our_id,
+                                     element_count,
+                                     mask_length,
+                                     elements, mask,
+                                     GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60),
+                                     &requester_callback,
+                                     peer);
+
+  if (qe == NULL)
+    {
+      LOG(GNUNET_ERROR_TYPE_WARNING, "Could not send request to vectorproduct service! Exitting!");
+      ok = -1;
+      return NULL;
+    }
+
+  return qe;
+}
+
+
+/**
+ * Function prepares the message to be sent by peer1 to its vectorproduct service
+ * to prepare response, and wait for a request session to be initiated by peer1
+ */
+static struct GNUNET_VECTORPRODUCT_QueueEntry *
+responder_prepare_response (char * input_elements,
+                            char * input_mask,
+                            char * input_key,
+                            struct PeerData * peer)
+{
+  GNUNET_assert (peer->vh != NULL);
+
+  unsigned int i;
+  uint16_t element_count = 0;
+  int32_t * elements = NULL;
+  unsigned short mask_length = 0;
+  unsigned char * mask = NULL;
+  int32_t element;
+  struct GNUNET_VECTORPRODUCT_QueueEntry *qe;
+  struct GNUNET_HashCode key;
+  int exit_loop;
+  char * begin;
+  char * end;
+  
+  GNUNET_CRYPTO_hash_from_string (input_key, &key);
+  
+  /* Read input_elements, and put in elements array */
+  exit_loop = 0;
+  begin = input_elements;
+  do
+    {
+      unsigned int mcount = element_count;
+      //ignore empty rows of ,,,,,,
+      while (*begin == ',')
+        begin++;
+      // get the length of the current element and replace , with null
+      for (end = begin; *end && *end != ','; end++);
+
+      if (*end == '\0')
+        exit_loop = 1;
+
+      if (1 != sscanf (begin, "%" SCNd32, &element))
+        {
+          FPRINTF (stderr, _ ("Could not convert `%s' to int32_t.\n"), begin);
+          ok = -1;
+          return NULL;
+        }
+
+      GNUNET_array_append (elements, mcount, element);
+      element_count++;
+
+      begin = ++end;
+    }
+  while (!exit_loop && element_count < max_mids);
+  GNUNET_assert (elements != NULL);
+  GNUNET_assert (element_count >= 1);
+  
+  /* Read input_mask and read in mask array */
+  mask_length = element_count / 8 + (element_count % 8 ? 1 : 0);
+  mask = GNUNET_malloc ((element_count / 8) + 2);
+  GNUNET_assert (NULL != mask);
+  if (NULL != input_mask)
+    {
+      begin = input_mask;
+      unsigned short mask_count = 0;
+      int exit_loop = 0;
+
+      do
+        {
+          //ignore empty rows of ,,,,,,
+          while (* begin == ',')
+            begin++;
+          // get the length of the current element and replace , with null
+          // gnunet_ascii-armor uses base32, thus we can use , as separator!
+          for (end = begin; *end && *end != ','; end++);
+
+          if (*end == '\0')
+            exit_loop = 1;
+
+          if (1 != sscanf (begin, "%" SCNd32, &element))
+            {
+              FPRINTF (stderr, _ ("Could not convert `%s' to int32_t.\n"), begin);
+              ok = -1;
+              return NULL;
+            }
+
+          GNUNET_assert (mask_count <= element_count);
+
+          if (element)
+            mask[mask_count / 8] = mask[mask_count / 8] | 1 << (mask_count % 8);
+
+          mask_count++;
+          begin = ++end;
+        }
+      while (!exit_loop);
+      // +1 to see if we would have more data, which would indicate malformed/superficial input
+      GNUNET_assert (mask_count == element_count);
+    }
+  else
+    {
+      for (i = 0; i <= mask_length; i++)
+        mask[i] = UCHAR_MAX; // all 1's
+    }
+
+  qe = GNUNET_VECTORPRODUCT_prepare_response (peer->vh,
+                                              &key,
+                                              element_count,
+                                              elements,
+                                              GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60),
+                                              &responder_callback,
+                                              peer);
+
+  if (qe == NULL)
+    {
+      LOG(GNUNET_ERROR_TYPE_ERROR, "Could not send request to vectorproduct service! Exitting!");
+      ok = -1;
+      return NULL;
+    }
+
+  return qe;
+}
+
+
+static void
+request_task (void *cls,
+              const struct GNUNET_SCHEDULER_TaskContext
+              * tc)
+{
+  struct PeerData * peer = cls;
+
+  requester_request (peer->input_elements, peer->input_mask, peer->input_keys[peer->request_num], peer, peer->peers[peer->request_num]);
+  peer->request_num++;
+  return;
+}
+
+
+static void
+prepare_response_task (void *cls,
+                       const struct GNUNET_SCHEDULER_TaskContext
+                       * tc)
+{
+  struct PeerData * peer = cls;
+
+  responder_prepare_response (peer->input_elements, peer->input_mask, peer->input_keys[peer->request_num], peer);
+  peer->request_num++;
+  return;
+}
+
+
+/**
+ * Adapter function called to destroy a connection to
+ * a service. This function is called when GNUNET_TESTBED_operation_done is
+ * called for peer->op, which holds the handle for GNUNET_TESTBED_service_connect
+ * operation.
+ * 
+ * @param cls closure
+ * @param op_result service handle returned from the connect adapter
+ */
+static void
+vectorproduct_da (void *cls, void *op_result)
+{
+  struct PeerData* peer = (struct PeerData*) cls;
+
+  GNUNET_VECTORPRODUCT_disconnect (peer->vh);
+  return;
+
+  GNUNET_assert (0);
+}
+
+
+/**
+ * Adapter function called to establish a connection to
+ * a service. This function is called to by GNUNET_TESTBED_service_connect.
+ * 
+ * @param cls closure
+ * @param cfg configuration of the peer to connect to; will be available until
+ *          GNUNET_TESTBED_operation_done() is called on the operation returned
+ *          from GNUNET_TESTBED_service_connect()
+ * @return service handle to return in 'op_result', NULL on error
+ */
+static void *
+vectorproduct_ca (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  struct PeerData *p = cls;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer %u (`%s') started\n", (&peer1 == p) ? 1 : 2,
+              GNUNET_i2s (&p->our_id));
+
+  switch (setup_state)
+    {
+    case PEER1_VECTORPRODUCT_CONNECT:
+      /* Connect peer 2 to vectorproduct service */
+      {
+        peer2.op = GNUNET_TESTBED_service_connect (&peer2, peer2.peer, "vectorproduct",
+                                                   NULL, NULL, vectorproduct_ca,
+                                                   vectorproduct_da, &peer2);
+        setup_state = PEER2_VECTORPRODUCT_CONNECT;
+      }
+
+      peer1.vh = GNUNET_VECTORPRODUCT_connect (cfg);
+      return peer1.vh;
+
+    case PEER2_VECTORPRODUCT_CONNECT:
+      /* Connect peer 3 to vectorproduct service */
+      {
+        peer3.op = GNUNET_TESTBED_service_connect (&peer3, peer3.peer, "vectorproduct",
+                                                   NULL, NULL, vectorproduct_ca,
+                                                   vectorproduct_da, &peer3);
+        setup_state = PEER3_VECTORPRODUCT_CONNECT;
+      }
+
+      peer2.vh = GNUNET_VECTORPRODUCT_connect (cfg);
+      return peer2.vh;
+
+    case PEER3_VECTORPRODUCT_CONNECT:
+      /* Connect peer 4 to vectorproduct service */
+      {
+        peer4.op = GNUNET_TESTBED_service_connect (&peer4, peer4.peer, "vectorproduct",
+                                                   NULL, NULL, vectorproduct_ca,
+                                                   vectorproduct_da, &peer4);
+        setup_state = PEER4_VECTORPRODUCT_CONNECT;
+      }
+
+      peer3.vh = GNUNET_VECTORPRODUCT_connect (cfg);
+      return peer3.vh;
+
+    case PEER4_VECTORPRODUCT_CONNECT:
+      peer4.vh = GNUNET_VECTORPRODUCT_connect (cfg);
+
+      /* Schedule the tasks to issue prepare_response calls from peer1 and peer2
+       * for peer3 and peer4.
+       */
+      GNUNET_SCHEDULER_add_now (&prepare_response_task, &peer1);
+      GNUNET_SCHEDULER_add_now (&prepare_response_task, &peer1);
+      GNUNET_SCHEDULER_add_now (&prepare_response_task, &peer2);
+      GNUNET_SCHEDULER_add_now (&prepare_response_task, &peer2);
+
+      /* 
+       * Schedule the tasks to issue requests calls from peer3 and peer4
+       * to peer1 and peer2
+       */
+      GNUNET_SCHEDULER_add_now (&request_task, &peer3);
+      GNUNET_SCHEDULER_add_now (&request_task, &peer3);
+      GNUNET_SCHEDULER_add_now (&request_task, &peer4);
+      GNUNET_SCHEDULER_add_now (&request_task, &peer4);
+
+      return peer2.vh;
+    default:
+      GNUNET_assert (0);
+    }
+}
+
+
+/**
+ * Callback to be called when the requested peer information is available
+ *
+ * @param cb_cls the closure from GNUNET_TETSBED_peer_get_information()
+ * @param op the operation this callback corresponds to
+ * @param pinfo the result; will be NULL if the operation has failed
+ * @param emsg error message if the operation has failed; will be NULL if the
+ *          operation is successfull
+ */
+static void
+peerinfo_cb (void *cb_cls, struct GNUNET_TESTBED_Operation *op_,
+             const struct GNUNET_TESTBED_PeerInformation *pinfo,
+             const char *emsg)
+{
+  GNUNET_assert (NULL == emsg);
+  GNUNET_assert (op == op_);
+  switch (setup_state)
+    {
+    case PEER1_GET_IDENTITY:
+      {
+        memcpy (&peer1.our_id, pinfo->result.id,
+                sizeof (struct GNUNET_PeerIdentity));
+        GNUNET_TESTBED_operation_done (op);
+
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer 1 id: %s\n", GNUNET_i2s_full
+                    (&peer1.our_id));
+
+        /* Request for peer id of peer 2*/
+        op = GNUNET_TESTBED_peer_get_information (peer2.peer,
+                                                  GNUNET_TESTBED_PIT_IDENTITY,
+                                                  &peerinfo_cb, NULL);
+        setup_state = PEER2_GET_IDENTITY;
+      }
+      break;
+    case PEER2_GET_IDENTITY:
+      {
+        memcpy (&peer2.our_id, pinfo->result.id,
+                sizeof (struct GNUNET_PeerIdentity));
+        GNUNET_TESTBED_operation_done (op);
+
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer 2 id: %s\n", GNUNET_i2s_full
+                    (&peer2.our_id));
+
+        /* Request for peer id of peer 3*/
+        op = GNUNET_TESTBED_peer_get_information (peer3.peer,
+                                                  GNUNET_TESTBED_PIT_IDENTITY,
+                                                  &peerinfo_cb, NULL);
+        setup_state = PEER3_GET_IDENTITY;
+      }
+      break;
+    case PEER3_GET_IDENTITY:
+      {
+        memcpy (&peer3.our_id, pinfo->result.id,
+                sizeof (struct GNUNET_PeerIdentity));
+        GNUNET_TESTBED_operation_done (op);
+
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer 3 id: %s\n", GNUNET_i2s_full
+                    (&peer3.our_id));
+
+        /* Request for peer id of peer 4*/
+        op = GNUNET_TESTBED_peer_get_information (peer4.peer,
+                                                  GNUNET_TESTBED_PIT_IDENTITY,
+                                                  &peerinfo_cb, NULL);
+        setup_state = PEER4_GET_IDENTITY;
+      }
+      break;
+    case PEER4_GET_IDENTITY:
+      {
+        memcpy (&peer4.our_id, pinfo->result.id,
+                sizeof (struct GNUNET_PeerIdentity));
+        GNUNET_TESTBED_operation_done (op);
+
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer 2 id: %s\n", GNUNET_i2s_full
+                    (&peer2.our_id));
+
+        /* Connect peer 1 to vectorproduct service */
+        peer1.op = GNUNET_TESTBED_service_connect (&peer1, peer1.peer, "vectorproduct",
+                                                   NULL, NULL, vectorproduct_ca,
+                                                   vectorproduct_da, &peer1);
+        setup_state = PEER1_VECTORPRODUCT_CONNECT;
+      }
+      break;
+    default:
+      GNUNET_assert (0);
+    }
+}
+
+
+/**
+ * Signature of a main function for a testcase.
+ *
+ * @param cls closure
+ * @param num_peers number of peers in 'peers'
+ * @param peers handle to peers run in the testbed
+ */
+static void
+test_master (void *cls, unsigned int num_peers,
+             struct GNUNET_TESTBED_Peer **peers)
+{
+  GNUNET_assert (NULL != peers);
+  GNUNET_assert (NULL != peers[0]);
+  GNUNET_assert (NULL != peers[1]);
+  GNUNET_assert (NULL != peers[2]);
+  GNUNET_assert (NULL != peers[3]);
+  peer1.peer = peers[0];
+  peer1.input_elements = input_elements_peer1;
+  peer1.input_mask = input_mask_peer1;
+  peer1.request_num = 0;
+  peer1.callback_num = 0;
+  peer1.input_keys[0] = input_key_p1_p3;
+  peer1.input_keys[1] = input_key_p1_p4;
+
+  peer2.peer = peers[1];
+  peer2.input_elements = input_elements_peer2;
+  peer2.input_mask = input_mask_peer2;
+  peer2.request_num = 0;
+  peer2.callback_num = 0;
+  peer2.input_keys[0] = input_key_p2_p3;
+  peer2.input_keys[1] = input_key_p2_p4;
+
+  peer3.peer = peers[2];
+  peer3.input_elements = input_elements_peer3;
+  peer3.input_mask = input_mask_peer3;
+  peer3.request_num = 0;
+  peer3.callback_num = 0;
+  peer3.input_keys[0] = input_key_p1_p3;
+  peer3.input_keys[1] = input_key_p2_p3;
+  peer3.peers[0] = &peer1;
+  peer3.peers[1] = &peer2;
+
+
+  peer4.peer = peers[3];
+  peer4.input_elements = input_elements_peer4;
+  peer4.input_mask = input_mask_peer4;
+  peer4.request_num = 0;
+  peer4.callback_num = 0;
+  peer4.input_keys[0] = input_key_p1_p4;
+  peer4.input_keys[1] = input_key_p2_p4;
+  peer4.peers[0] = &peer1;
+  peer4.peers[1] = &peer2;
+  
+  /* Get the peer identity and configuration of peer 1 */
+  op = GNUNET_TESTBED_peer_get_information (peer1.peer,
+                                            GNUNET_TESTBED_PIT_IDENTITY,
+                                            &peerinfo_cb, NULL);
+  setup_state = PEER1_GET_IDENTITY;
+  abort_task =
+          GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
+                                        (GNUNET_TIME_UNIT_SECONDS, 120), &do_abort,
+                                        NULL);
+}
+
+
+/**
+ * Main function
+ */
+int
+main (int argc, char **argv)
+{
+  uint64_t event_mask;
+
+  ok = GNUNET_NO;
+  event_mask = 0;
+  event_mask |= (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED);
+  max_mids = (GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof (struct GNUNET_MessageHeader))
+          / sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1;
+  (void) GNUNET_TESTBED_test_run ("test_vectorproduct_api_4peers",
+                                  "test_vectorproduct_api_data.conf",
+                                  NUM_PEERS, event_mask, &controller_event_cb,
+                                  NULL,
+                                  &test_master, NULL);
+  if (GNUNET_SYSERR == ok)
+    return 1;
+  return 0;
+}