towards handling suboperations during overlay connect
[oweals/gnunet.git] / src / testbed / gnunet-service-testbed.c
index c96512046e7dcc7a26f003bf80a14029173e6d34..05d296fee451ef07d68dd7175a5608ce56a30b8c 100644 (file)
  */
 #define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30)
 
-/**
- * Timeout of Transport try_connect requests
- */
-#define TRANSPORT_TRY_CONNECT_TIMEOUT                                   \
-  GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100)
-
 /**
  * The main context information associated with the client which started us
  */
@@ -85,7 +79,7 @@ struct Context
    * The TESTING system handle for starting peers locally
    */
   struct GNUNET_TESTING_System *system;
-
+  
   /**
    * Event mask of event to be responded in this context
    */
@@ -158,12 +152,18 @@ struct Route
   uint32_t dest;
 
   /**
-   * The host destination is reachable thru
+   * The destination host is reachable thru
    */
   uint32_t thru;
 };
 
 
+/**
+ * Context information used while linking controllers
+ */
+struct LinkControllersContext;
+
+
 /**
  * Structure representing a connected(directly-linked) controller
  */
@@ -179,6 +179,17 @@ struct Slave
    */
   struct GNUNET_TESTBED_Controller *controller;
 
+  /**
+   * The configuration of the slave. Cannot be NULL
+   */
+  struct GNUNET_CONFIGURATION_Handle *cfg;
+
+  /**
+   * handle to lcc which is associated with this slave startup. Should be set to
+   * NULL when the slave has successfully started up
+   */
+  struct LinkControllersContext *lcc;
+
   /**
    * The id of the host this controller is running on
    */
@@ -284,7 +295,7 @@ struct LCFContextQueue
 
 
 /**
- * A locally started peer
+ * A peer
  */
 struct Peer
 {
@@ -349,11 +360,6 @@ struct OverlayConnectContext
    */
   struct Peer *peer;
 
-  /**
-   * The other peer
-   */
-  struct Peer *other_peer;
-
   /**
    * Transport handle of the first peer to get its HELLO
    */
@@ -389,6 +395,11 @@ struct OverlayConnectContext
    */
   struct OperationContext *opc;
 
+  /**
+   * Controller of peer 2; NULL if the peer is local
+   */
+  struct GNUNET_TESTBED_Controller *peer2_controller;
+
   /**
    * The peer identity of the first peer
    */
@@ -415,6 +426,21 @@ struct OverlayConnectContext
    */
   GNUNET_SCHEDULER_TaskIdentifier timeout_task;
 
+  /**
+   * The id of peer A
+   */
+  uint32_t peer_id;
+
+  /**
+   * The id of peer B
+   */
+  uint32_t other_peer_id;
+
+  /**
+   * Number of times we tried to send hello; used to increase delay in offering
+   * hellos
+   */
+  uint16_t retries;
 };
 
 
@@ -451,6 +477,12 @@ struct RequestOverlayConnectContext
    */
   GNUNET_SCHEDULER_TaskIdentifier timeout_rocc_task_id;
   
+  /**
+   * Number of times we tried to send hello; used to increase delay in offering
+   * hellos
+   */
+  uint16_t retries;
+  
 };
 
 
@@ -502,10 +534,6 @@ struct LinkControllersContext
    */
   uint64_t operation_id;
 
-  /**
-   * Pointer to the slave handle if we are directly starting/connecting to the controller
-   */
-  struct Slave *slave;
 };
 
 
@@ -515,6 +543,11 @@ struct LinkControllersContext
  */
 static struct Context *master_context;
 
+/**
+ * Our hostname; we give this to all the peers we start
+ */
+static char *hostname;
+
 /***********/
 /* Handles */
 /***********/
@@ -564,7 +597,7 @@ static struct Route **route_list;
 static struct Slave **slave_list;
 
 /**
- * A list of peers we own locally
+ * A list of peers we know about
  */
 static struct Peer **peer_list;
 
@@ -690,7 +723,7 @@ TESTBED_realloc (void *ptr, size_t size, size_t new_size)
 {
   ptr = GNUNET_realloc (ptr, new_size);
   if (new_size > size)
-    ptr = memset (ptr + size, 0, new_size - size);
+    (void) memset (ptr + size, 0, new_size - size);
   return ptr;
 }
 
@@ -706,16 +739,19 @@ static int
 host_list_add (struct GNUNET_TESTBED_Host *host)
 {
   uint32_t host_id;
+  uint32_t orig_size;
 
   host_id = GNUNET_TESTBED_host_get_id_ (host);
+  orig_size = host_list_size;  
   if (host_list_size <= host_id)
   {
+    while (host_list_size <= host_id)
+      host_list_size += LIST_GROW_STEP;
     host_list =
         TESTBED_realloc (host_list,
-                         sizeof (struct GNUNET_TESTBED_Host *) * host_list_size,
-                         sizeof (struct GNUNET_TESTBED_Host *) *
-                         (host_list_size + LIST_GROW_STEP));
-    host_list_size += LIST_GROW_STEP;
+                         sizeof (struct GNUNET_TESTBED_Host *) * orig_size,
+                         sizeof (struct GNUNET_TESTBED_Host *)
+                        * host_list_size);
   }
   if (NULL != host_list[host_id])
   {
@@ -735,13 +771,17 @@ host_list_add (struct GNUNET_TESTBED_Host *host)
 static void
 route_list_add (struct Route *route)
 {
+  uint32_t orig_size;
+
+  orig_size = route_list_size;  
   if (route->dest >= route_list_size)
   {
+    while (route->dest >= route_list_size)
+      route_list_size += LIST_GROW_STEP;
     route_list =
-        TESTBED_realloc (route_list, sizeof (struct Route *) * route_list_size,
-                         sizeof (struct Route *) * (route_list_size +
-                                                    LIST_GROW_STEP));
-    route_list_size += LIST_GROW_STEP;
+        TESTBED_realloc (route_list,
+                        sizeof (struct Route *) * orig_size,
+                         sizeof (struct Route *) * route_list_size);
   }
   GNUNET_assert (NULL == route_list[route->dest]);
   route_list[route->dest] = route;
@@ -787,7 +827,7 @@ peer_list_add (struct Peer *peer)
     peer_list =
         TESTBED_realloc (peer_list, sizeof (struct Peer *) * orig_size,
                          sizeof (struct Peer *) * peer_list_size);
-  }
+  }  
   GNUNET_assert (NULL == peer_list[peer->id]);
   peer_list[peer->id] = peer;
 }
@@ -1102,7 +1142,7 @@ slave_event_callback (void *cls,
 /**
  * Callback to signal successfull startup of the controller process
  *
- * @param cls the closure from GNUNET_TESTBED_controller_start()
+ * @param cls the handle to the slave whose status is to be found here
  * @param cfg the configuration with which the controller has been started;
  *          NULL if status is not GNUNET_OK
  * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
@@ -1112,26 +1152,54 @@ static void
 slave_status_callback (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg,
                        int status)
 {
-  struct LinkControllersContext *lcc = cls;
+  struct Slave *slave = cls;
+  struct LinkControllersContext *lcc;
 
+  lcc = slave->lcc;
   if (GNUNET_SYSERR == status)
   {
-    lcc->slave->controller_proc = NULL;
+    slave->controller_proc = NULL;
+    slave_list[slave->host_id] = NULL;
+    if (NULL != slave->cfg)
+      GNUNET_CONFIGURATION_destroy (slave->cfg);
+    GNUNET_free (slave);
+    slave = NULL;
     LOG (GNUNET_ERROR_TYPE_WARNING, "Unexpected slave shutdown\n");
     GNUNET_SCHEDULER_shutdown ();       /* We too shutdown */
-    return;
+    goto clean_lcc;
   }
-  lcc->slave->controller =
-      GNUNET_TESTBED_controller_connect (cfg, host_list[lcc->slave->host_id],
+  slave->controller =
+      GNUNET_TESTBED_controller_connect (cfg, host_list[slave->host_id],
                                          master_context->event_mask,
-                                         &slave_event_callback, lcc->slave);
-  if (NULL != lcc->slave->controller)
+                                         &slave_event_callback, slave);
+  if (NULL != slave->controller)
+  {
     send_operation_success_msg (lcc->client, lcc->operation_id);
+    slave->cfg = GNUNET_CONFIGURATION_dup (cfg);
+  }
   else
+  {
     send_operation_fail_msg (lcc->client, lcc->operation_id,
                              "Could not connect to delegated controller");
-  GNUNET_SERVER_client_drop (lcc->client);
-  GNUNET_free (lcc);
+    GNUNET_TESTBED_controller_stop (slave->controller_proc);
+    slave_list[slave->host_id] = NULL;
+    GNUNET_free (slave);
+    slave = NULL;
+  }
+
+ clean_lcc:
+  if (NULL != lcc)
+  {
+    if (NULL != lcc->client)
+    {
+      GNUNET_SERVER_receive_done (lcc->client, GNUNET_OK);
+      GNUNET_SERVER_client_drop (lcc->client);
+      lcc->client = NULL;
+    }
+    GNUNET_free (lcc);
+  }
+  if (NULL != slave)
+    slave->lcc = NULL;
 }
 
 
@@ -1153,8 +1221,8 @@ handle_init (void *cls, struct GNUNET_SERVER_Client *client,
 
   if (NULL != master_context)
   {
-    GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    LOG_DEBUG ("We are being connected to laterally\n");
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
   msg = (const struct GNUNET_TESTBED_InitMessage *) message;
@@ -1179,7 +1247,7 @@ handle_init (void *cls, struct GNUNET_SERVER_Client *client,
   master_context->master_ip = GNUNET_strdup (controller_hostname);
   LOG_DEBUG ("Master Controller IP: %s\n", master_context->master_ip);
   master_context->system =
-      GNUNET_TESTING_system_create ("testbed", master_context->master_ip);
+      GNUNET_TESTING_system_create ("testbed", master_context->master_ip, hostname);
   host =
       GNUNET_TESTBED_host_create_with_id (master_context->host_id, NULL, NULL,
                                           0);
@@ -1400,7 +1468,8 @@ handle_link_controllers (void *cls, struct GNUNET_SERVER_Client *client,
   if ((delegated_host_id >= host_list_size) ||
       (NULL == host_list[delegated_host_id]))
   {
-    LOG (GNUNET_ERROR_TYPE_WARNING, "Delegated host not registered with us\n");
+    LOG (GNUNET_ERROR_TYPE_WARNING,
+        "Delegated host %u not registered with us\n", delegated_host_id);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
@@ -1476,7 +1545,7 @@ handle_link_controllers (void *cls, struct GNUNET_SERVER_Client *client,
           GNUNET_TESTBED_controller_connect (cfg, host_list[slave->host_id],
                                              master_context->event_mask,
                                              &slave_event_callback, slave);
-      GNUNET_CONFIGURATION_destroy (cfg);
+      slave->cfg = cfg;
       if (NULL != slave->controller)
         send_operation_success_msg (client, GNUNET_ntohll (msg->operation_id));
       else
@@ -1489,17 +1558,16 @@ handle_link_controllers (void *cls, struct GNUNET_SERVER_Client *client,
     lcc->operation_id = GNUNET_ntohll (msg->operation_id);
     GNUNET_SERVER_client_keep (client);
     lcc->client = client;
-    lcc->slave = slave;
+    slave->lcc = lcc;
     slave->controller_proc =
        GNUNET_TESTBED_controller_start (master_context->master_ip,
                                         host_list[slave->host_id], cfg,
-                                        &slave_status_callback, lcc);
+                                        &slave_status_callback, slave);
     GNUNET_CONFIGURATION_destroy (cfg);
     new_route = GNUNET_malloc (sizeof (struct Route));
     new_route->dest = delegated_host_id;
     new_route->thru = master_context->host_id;
     route_list_add (new_route);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
 
@@ -1535,11 +1603,24 @@ handle_link_controllers (void *cls, struct GNUNET_SERVER_Client *client,
     GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
   /* FIXME: Adding a new route should happen after the controllers are linked
    * successfully */
-  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+  if (1 != msg->is_subordinate)
+  {
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
+  if ((delegated_host_id < route_list_size)
+      && (NULL != route_list[delegated_host_id]))
+  {
+    GNUNET_break_op (0);       /* Are you trying to link delegated host twice
+                                  with is subordinate flag set to GNUNET_YES? */
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    return;
+  }
   new_route = GNUNET_malloc (sizeof (struct Route));
   new_route->dest = delegated_host_id;
   new_route->thru = route->dest;
   route_list_add (new_route);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
 
@@ -1960,8 +2041,20 @@ handle_peer_get_config (void *cls, struct GNUNET_SERVER_Client *client,
   peer = peer_list[peer_id];
   if (GNUNET_YES == peer->is_remote)
   {
-    /* FIXME: forward to sub controller */
-    GNUNET_break (0);
+    struct ForwardedOperationContext *fopc;
+    
+    fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
+    GNUNET_SERVER_client_keep (client);
+    fopc->client = client;
+    fopc->operation_id = GNUNET_ntohll (msg->operation_id);
+    fopc->opc =
+        GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.controller,
+                                               fopc->operation_id, &msg->header,
+                                               &forwarded_operation_reply_relay,
+                                               fopc);
+    fopc->timeout_task =
+        GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_operation_timeout,
+                                      fopc);    
     GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
@@ -2001,6 +2094,7 @@ occ_cleanup (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
   LOG_DEBUG ("Cleaning up occ\n");
   GNUNET_free_non_null (occ->emsg);
   GNUNET_free_non_null (occ->hello);
+  GNUNET_SERVER_client_drop (occ->client);
   if (NULL != occ->opc)
     GNUNET_TESTBED_forward_operation_msg_cancel_ (occ->opc);
   if (GNUNET_SCHEDULER_NO_TASK != occ->send_hello_task)
@@ -2031,7 +2125,6 @@ timeout_overlay_connect (void *cls,
 
   occ->timeout_task = GNUNET_SCHEDULER_NO_TASK;
   send_operation_fail_msg (occ->client, occ->op_id, occ->emsg);
-  GNUNET_SERVER_client_drop (occ->client);
   occ_cleanup (occ, tc);
 }
 
@@ -2096,11 +2189,10 @@ overlay_connect_notify (void *cls, const struct GNUNET_PeerIdentity *new_peer,
       htons (sizeof (struct GNUNET_TESTBED_ConnectionEventMessage));
   msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEERCONEVENT);
   msg->event_type = htonl (GNUNET_TESTBED_ET_CONNECT);
-  msg->peer1 = htonl (occ->peer->id);
-  msg->peer2 = htonl (occ->other_peer->id);
+  msg->peer1 = htonl (occ->peer_id);
+  msg->peer2 = htonl (occ->other_peer_id);
   msg->operation_id = GNUNET_htonll (occ->op_id);
   queue_message (occ->client, &msg->header);
-  GNUNET_SERVER_client_drop (occ->client);
   GNUNET_SCHEDULER_add_now (&occ_cleanup, occ);
 }
 
@@ -2123,7 +2215,7 @@ send_hello (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
     return;
   GNUNET_assert (NULL != occ->hello);
   other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
-  if (GNUNET_YES == occ->other_peer->is_remote)
+  if (NULL != occ->peer2_controller)
   {
     struct GNUNET_TESTBED_RequestConnectMessage *msg;
     uint16_t msize;
@@ -2136,13 +2228,12 @@ send_hello (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
     msg = GNUNET_malloc (msize);
     msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_REQUESTCONNECT);
     msg->header.size = htons (msize);
-    msg->peer = htonl (occ->other_peer->id);
+    msg->peer = htonl (occ->other_peer_id);
     msg->operation_id = GNUNET_htonll (occ->op_id);
     (void) memcpy (&msg->peer_identity, &occ->peer_identity,
                   sizeof (struct GNUNET_PeerIdentity));
     memcpy (msg->hello, occ->hello, hello_size);
-    GNUNET_TESTBED_queue_message_ (occ->other_peer->details.remote.controller,
-                                  &msg->header);
+    GNUNET_TESTBED_queue_message_ (occ->peer2_controller, &msg->header);
   }
   else
   {
@@ -2151,8 +2242,10 @@ send_hello (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
     GNUNET_TRANSPORT_offer_hello (occ->p2th, occ->hello, NULL, NULL);
     GNUNET_TRANSPORT_try_connect (occ->p2th, &occ->peer_identity);
     occ->send_hello_task =
-        GNUNET_SCHEDULER_add_delayed (TRANSPORT_TRY_CONNECT_TIMEOUT,
-                                      &send_hello, occ);
+        GNUNET_SCHEDULER_add_delayed
+        (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
+                                        100 * (pow (2, occ->retries++))),
+         &send_hello, occ);
   }
   GNUNET_free (other_peer_str);  
 }
@@ -2209,10 +2302,10 @@ hello_update_cb (void *cls, const struct GNUNET_MessageHeader *hello)
   GNUNET_TRANSPORT_disconnect (occ->p1th);
   occ->p1th = NULL;
   GNUNET_free_non_null (occ->emsg);
-  if (GNUNET_NO == occ->other_peer->is_remote)
+  if (NULL == occ->peer2_controller)
   {   
     occ->p2th =
-       GNUNET_TRANSPORT_connect (occ->other_peer->details.local.cfg,
+       GNUNET_TRANSPORT_connect (peer_list[occ->other_peer_id]->details.local.cfg,
                                  &occ->other_peer_identity, NULL, NULL, NULL,
                                  NULL);
     if (NULL == occ->p2th)
@@ -2333,6 +2426,8 @@ handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
   const struct GNUNET_CORE_MessageHandler no_handlers[] = {
     {NULL, 0, 0}
   };
+  struct Peer *peer;
+  uint64_t operation_id;
   uint32_t p1;
   uint32_t p2;
 
@@ -2341,19 +2436,77 @@ handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
   p2 = ntohl (msg->peer2);
   GNUNET_assert (p1 < peer_list_size);
   GNUNET_assert (NULL != peer_list[p1]);
-  GNUNET_assert (p2 < peer_list_size);
-  GNUNET_assert (NULL != peer_list[p2]);
-  /* FIXME: Add cases where we have to forward overlay connect message to sub
-   * controllers */
-  GNUNET_assert (GNUNET_NO == peer_list[p1]->is_remote);
+  peer = peer_list[p1];
+  operation_id = GNUNET_ntohll (msg->operation_id);
+  if (GNUNET_YES == peer->is_remote)
+  {
+    struct ForwardedOperationContext *fopc;
+
+    fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
+    GNUNET_SERVER_client_keep (client);
+    fopc->client = client;
+    fopc->operation_id = operation_id;
+    LOG_DEBUG ("Forwarding overlay connect\n");
+    fopc->opc = 
+       GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.controller,
+                                              operation_id, message,
+                                              &forwarded_operation_reply_relay,
+                                              fopc);
+    fopc->timeout_task =
+       GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_operation_timeout,
+                                     fopc);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
   occ = GNUNET_malloc (sizeof (struct OverlayConnectContext));
   GNUNET_SERVER_client_keep (client);
   occ->client = client;
+  occ->peer_id = p1;
+  occ->other_peer_id = p2;
   occ->peer = peer_list[p1];
-  occ->other_peer = peer_list[p2];
-  occ->op_id = GNUNET_ntohll (msg->operation_id);
+  occ->op_id = GNUNET_ntohll (msg->operation_id);  
+  if ((p2 >= peer_list_size) || (NULL == peer_list[p2]))
+  {
+    uint32_t peer2_host_id;
+
+    peer2_host_id = ntohl (msg->peer2_host_id);
+    if ((peer2_host_id >= slave_list_size)
+       || (NULL ==slave_list[peer2_host_id]))
+    {
+      struct GNUNET_TESTBED_NeedControllerConfig *reply;
+
+      GNUNET_free (occ);
+      reply = GNUNET_malloc (sizeof (struct
+                                     GNUNET_TESTBED_NeedControllerConfig)); 
+      reply->header.size = htons (sizeof (struct
+                                          GNUNET_TESTBED_NeedControllerConfig));
+      reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_NEEDCONTROLLERCONFIG);
+      reply->controller_host_id = msg->peer2_host_id;
+      reply->operation_id = msg->operation_id;
+      queue_message (client, &reply->header);      
+      GNUNET_SERVER_receive_done (client, GNUNET_OK);
+      return;
+    }
+    else
+    {
+      occ->peer2_controller = slave_list[peer2_host_id]->controller;
+      if (NULL == occ->peer2_controller)
+      {
+        GNUNET_break (0);       /* What's going on? */
+        GNUNET_SERVER_client_drop (client);
+        GNUNET_free (occ);
+        GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+        return;
+      }
+    }
+  }
+  else
+  {
+    if (GNUNET_YES == peer_list[occ->other_peer_id]->is_remote)
+      occ->peer2_controller = peer_list[occ->other_peer_id]->details.remote.controller;
+  }
   /* Get the identity of the second peer */
-  if (GNUNET_YES == occ->other_peer->is_remote)
+  if (NULL != occ->peer2_controller)
   {
     struct GNUNET_TESTBED_PeerGetConfigurationMessage cmsg;
 
@@ -2363,7 +2516,7 @@ handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
     cmsg.peer_id = msg->peer2;
     cmsg.operation_id = msg->operation_id;
     occ->opc = 
-       GNUNET_TESTBED_forward_operation_msg_ (occ->other_peer->details.remote.controller,
+       GNUNET_TESTBED_forward_operation_msg_ (occ->peer2_controller,
                                               occ->op_id, &cmsg.header,
                                               &overlay_connect_get_config,
                                               occ);
@@ -2376,7 +2529,7 @@ handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
     GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
-  GNUNET_TESTING_peer_get_identity (occ->other_peer->details.local.peer,
+  GNUNET_TESTING_peer_get_identity (peer_list[occ->other_peer_id]->details.local.peer,
                                    &occ->other_peer_identity);
   /* Connect to the core of 1st peer and wait for the 2nd peer to connect */
   occ->emsg = GNUNET_strdup ("Timeout while connecting to CORE");
@@ -2449,9 +2602,7 @@ transport_connect_notify (void *cls, const struct GNUNET_PeerIdentity *new_peer,
 
   LOG_DEBUG ("Request Overlay connect notify\n");
   if (0 != memcmp (new_peer, &rocc->a_id, sizeof (struct GNUNET_PeerIdentity)))
-  {
     return;
-  }
   LOG_DEBUG ("Peer %4s connected\n", GNUNET_i2s (&rocc->a_id));
   cleanup_rocc (rocc);
 }
@@ -2473,8 +2624,10 @@ attempt_connect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
   GNUNET_TRANSPORT_offer_hello (rocc->th, rocc->hello, NULL, NULL);
   GNUNET_TRANSPORT_try_connect (rocc->th, &rocc->a_id);
   rocc->attempt_connect_task_id = 
-      GNUNET_SCHEDULER_add_delayed (TRANSPORT_TRY_CONNECT_TIMEOUT,
-                                    &attempt_connect_task, rocc);
+      GNUNET_SCHEDULER_add_delayed 
+      (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
+                                      100 * (pow (2, rocc->retries++))),
+       &attempt_connect_task, rocc);
 }
 
 
@@ -2525,10 +2678,14 @@ handle_overlay_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  if (GNUNET_NO != peer->is_remote)
+  if (GNUNET_YES == peer->is_remote)
   {
-    GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    struct GNUNET_MessageHeader *msg2;
+    
+    msg2 = GNUNET_malloc (msize);
+    (void) memcpy (msg2, message, msize);
+    GNUNET_TESTBED_queue_message_ (peer->details.remote.controller, msg2);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
   rocc = GNUNET_malloc (sizeof (struct RequestOverlayConnectContext));
@@ -2545,8 +2702,6 @@ handle_overlay_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
           sizeof (struct GNUNET_PeerIdentity));
   rocc->hello = GNUNET_malloc (hsize);
   memcpy (rocc->hello, msg->hello, hsize);
-  /* GNUNET_TRANSPORT_offer_hello (th, msg->hello, NULL, NULL); */
-  /* GNUNET_TRANSPORT_try_connect (th, &msg->peer_identity); */
   rocc->attempt_connect_task_id =
       GNUNET_SCHEDULER_add_now (&attempt_connect_task, rocc);
   rocc->timeout_rocc_task_id =
@@ -2555,6 +2710,64 @@ handle_overlay_request_connect (void *cls, struct GNUNET_SERVER_Client *client,
 }
 
 
+/**
+ * Handler for GNUNET_MESSAGE_TYPE_TESTBED_GETSLAVECONFIG messages
+ *
+ * @param cls NULL
+ * @param client identification of the client
+ * @param message the actual message
+ */
+static void
+handle_slave_get_config (void *cls, struct GNUNET_SERVER_Client *client,
+                        const struct GNUNET_MessageHeader *message)
+{
+  struct GNUNET_TESTBED_SlaveGetConfigurationMessage *msg;
+  struct Slave *slave;  
+  struct GNUNET_TESTBED_SlaveConfiguration *reply;
+  char *config;
+  char *xconfig;
+  size_t config_size;
+  size_t xconfig_size;
+  size_t reply_size;
+  uint64_t op_id;
+  uint32_t slave_id;
+
+  msg = (struct GNUNET_TESTBED_SlaveGetConfigurationMessage *) message;
+  slave_id = ntohl (msg->slave_id);
+  op_id = GNUNET_ntohll (msg->operation_id);
+  if ((slave_list_size <= slave_id) || (NULL == slave_list[slave_id]))
+  {
+    send_operation_fail_msg (client, op_id, "Slave not found");
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
+  slave = slave_list[slave_id];
+  if (NULL == slave->cfg)
+  {
+    send_operation_fail_msg (client, op_id,
+                            "Configuration not found (slave not started by me)");
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
+  config = GNUNET_CONFIGURATION_serialize (slave->cfg, &config_size);
+  xconfig_size = GNUNET_TESTBED_compress_config_ (config, config_size, 
+                                                 &xconfig);
+  GNUNET_free (config);  
+  reply_size = xconfig_size + sizeof (struct GNUNET_TESTBED_SlaveConfiguration);
+  GNUNET_break (reply_size <= UINT16_MAX);
+  GNUNET_break (config_size <= UINT16_MAX);
+  reply = GNUNET_realloc (xconfig, reply_size);
+  (void) memmove (&reply[1], reply, xconfig_size);
+  reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SLAVECONFIG);
+  reply->header.size = htons ((uint16_t) reply_size);
+  reply->slave_id = msg->slave_id;
+  reply->operation_id = msg->operation_id;
+  reply->config_size = htons ((uint16_t) config_size);
+  queue_message (client, &reply->header);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
 /**
  * Iterator over hash map entries.
  *
@@ -2641,11 +2854,15 @@ shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
   for (id = 0; id < slave_list_size; id++)
     if (NULL != slave_list[id])
     {
+      if (NULL != slave_list[id]->cfg)
+       GNUNET_CONFIGURATION_destroy (slave_list[id]->cfg);
       if (NULL != slave_list[id]->controller)
         GNUNET_TESTBED_controller_disconnect (slave_list[id]->controller);
       if (NULL != slave_list[id]->controller_proc)
         GNUNET_TESTBED_controller_stop (slave_list[id]->controller_proc);
+      GNUNET_free (slave_list[id]);
     }
+  GNUNET_free_non_null (slave_list);
   if (NULL != master_context)
   {
     GNUNET_free_non_null (master_context->master_ip);
@@ -2654,6 +2871,7 @@ shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
     GNUNET_free (master_context);
     master_context = NULL;
   }
+  GNUNET_free_non_null (hostname);
 }
 
 
@@ -2713,12 +2931,16 @@ testbed_run (void *cls, struct GNUNET_SERVER_Handle *server,
      sizeof (struct GNUNET_TESTBED_OverlayConnectMessage)},
     {&handle_overlay_request_connect, NULL, GNUNET_MESSAGE_TYPE_TESTBED_REQUESTCONNECT,
      0},
+    {handle_slave_get_config, NULL, GNUNET_MESSAGE_TYPE_TESTBED_GETSLAVECONFIG,
+     sizeof (struct GNUNET_TESTBED_SlaveGetConfigurationMessage)},
     {NULL}
   };
 
+  GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string 
+                (cfg, "testbed", "HOSTNAME", &hostname));
   GNUNET_SERVER_add_handlers (server, message_handlers);
   GNUNET_SERVER_disconnect_notify (server, &client_disconnect_cb, NULL);
-  ss_map = GNUNET_CONTAINER_multihashmap_create (5);
+  ss_map = GNUNET_CONTAINER_multihashmap_create (5, GNUNET_NO);
   shutdown_task_id =
       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
                                     &shutdown_task, NULL);