-improve indentation, reduce duplication of PIDs in core's neighbour map
[oweals/gnunet.git] / src / transport / gnunet-service-transport_clients.c
index 310121268b27fd23d55aedc95f58cc19faf235c0..f00f7c93f403e4c44c59a4cbe5fa86ee220e8078 100644 (file)
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet.
-     (C) 2010-2014 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2010-2015 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
 
      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.
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
 */
 
 /**
  * @file transport/gnunet-service-transport_clients.c
- * @brief plugin management API
+ * @brief communication with clients (core service and monitors)
  * @author Christian Grothoff
  */
 #include "platform.h"
@@ -141,7 +141,9 @@ struct AddressToStringContext
 
 
 /**
- * Client monitoring changes of active addresses of our neighbours.
+ * Client monitoring changes of active addresses or validations
+ * of our neighbours. Which type is being monitored depends on the
+ * DLL this struct is in.
  */
 struct MonitoringClient
 {
@@ -182,12 +184,12 @@ static struct TransportClient *clients_tail;
 /**
  * Head of linked list of all pending address iterations
  */
-struct AddressToStringContext *a2s_head;
+static struct AddressToStringContext *a2s_head;
 
 /**
  * Tail of linked list of all pending address iterations
  */
-struct AddressToStringContext *a2s_tail;
+static struct AddressToStringContext *a2s_tail;
 
 /**
  * Head of linked list of monitoring clients.
@@ -373,10 +375,12 @@ setup_val_monitoring_client (struct GNUNET_SERVER_Client *client,
                    sizeof (struct GNUNET_PeerIdentity)))
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                 "Client %p started monitoring of the peer `%s'\n",
-                mc, GNUNET_i2s (peer));
+                mc,
+                GNUNET_i2s (peer));
   else
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "Client %p started monitoring all peers\n", mc);
+                "Client %p started monitoring all peers\n",
+                mc);
   return mc;
 }
 
@@ -466,8 +470,8 @@ unicast (struct TransportClient *tc,
   if ( (tc->message_count >= MAX_PENDING) &&
        (GNUNET_YES == may_drop) )
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                _("Dropping message of type %u and size %u, have %u/%u messages pending\n"),
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Dropping message of type %u and size %u, have %u/%u messages pending\n",
                 ntohs (msg->type),
                 ntohs (msg->size),
                 tc->message_count,
@@ -534,16 +538,20 @@ client_disconnect_notification (void *cls,
   tc = lookup_client (client);
   if (NULL == tc)
     return;
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
-              "Client %p disconnected, cleaning up.\n", tc);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Client %p disconnected, cleaning up.\n",
+              tc);
   while (NULL != (mqe = tc->message_queue_head))
   {
-    GNUNET_CONTAINER_DLL_remove (tc->message_queue_head, tc->message_queue_tail,
+    GNUNET_CONTAINER_DLL_remove (tc->message_queue_head,
+                                 tc->message_queue_tail,
                                  mqe);
     tc->message_count--;
     GNUNET_free (mqe);
   }
-  GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
+  GNUNET_CONTAINER_DLL_remove (clients_head,
+                               clients_tail,
+                               tc);
   GNUNET_SERVER_client_set_user_context (client, NULL);
   if (NULL != tc->th)
   {
@@ -577,21 +585,16 @@ notify_client_about_neighbour (void *cls,
                                struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
 {
   struct TransportClient *tc = cls;
-  struct ConnectInfoMessage *cim;
-  size_t size = sizeof (struct ConnectInfoMessage);
-  char buf[size] GNUNET_ALIGN;
+  struct ConnectInfoMessage cim;
 
   if (GNUNET_NO == GST_neighbours_test_connected (peer))
     return;
-
-  GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
-  cim = (struct ConnectInfoMessage *) buf;
-  cim->header.size = htons (size);
-  cim->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
-  cim->id = *peer;
-  cim->quota_in = bandwidth_in;
-  cim->quota_out = bandwidth_out;
-  unicast (tc, &cim->header, GNUNET_NO);
+  cim.header.size = htons (sizeof (struct ConnectInfoMessage));
+  cim.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
+  cim.id = *peer;
+  cim.quota_in = bandwidth_in;
+  cim.quota_out = bandwidth_out;
+  unicast (tc, &cim.header, GNUNET_NO);
 }
 
 
@@ -610,44 +613,47 @@ clients_handle_start (void *cls,
                       const struct GNUNET_MessageHeader *message)
 {
   const struct StartMessage *start;
+  const struct GNUNET_MessageHeader *hello;
   struct TransportClient *tc;
   uint32_t options;
 
   tc = lookup_client (client);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
-              "Client %p sent START\n", tc);
-  if (tc != NULL)
+  if (NULL != tc)
   {
     /* got 'start' twice from the same client, not allowed */
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
-                "TransportClient %p ServerClient %p sent multiple START messages\n",
-                tc, tc->client);
     GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Client %p sent START\n",
+              client);
   start = (const struct StartMessage *) message;
   options = ntohl (start->options);
   if ((0 != (1 & options)) &&
       (0 !=
-       memcmp (&start->self, &GST_my_identity,
+       memcmp (&start->self,
+               &GST_my_identity,
                sizeof (struct GNUNET_PeerIdentity))))
   {
     /* client thinks this is a different peer, reject */
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                _("Rejecting control connection from peer `%s', which is not me!\n"),
-                GNUNET_i2s (&start->self));
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
   tc = setup_client (client);
   tc->send_payload = (0 != (2 & options));
-  unicast (tc,
-           GST_hello_get (),
-           GNUNET_NO);
-  GST_neighbours_iterate (&notify_client_about_neighbour, tc);
-  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+  hello = GST_hello_get ();
+  if (NULL != hello)
+    unicast (tc,
+             hello,
+             GNUNET_NO);
+  GST_neighbours_iterate (&notify_client_about_neighbour,
+                          tc);
+  GNUNET_SERVER_receive_done (client,
+                              GNUNET_OK);
 }
 
 
@@ -659,7 +665,8 @@ clients_handle_start (void *cls,
  * @param message the HELLO message
  */
 static void
-clients_handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
+clients_handle_hello (void *cls,
+                      struct GNUNET_SERVER_Client *client,
                       const struct GNUNET_MessageHeader *message)
 {
   GST_validation_handle_hello (message);
@@ -702,9 +709,6 @@ handle_send_transmit_continuation (void *cls,
   struct SendTransmitContinuationContext *stcc = cls;
   struct SendOkMessage send_ok_msg;
 
-  if (GNUNET_OK == success)
-    GST_neighbours_notify_payload_sent (&stcc->target,
-                                        bytes_payload);
   send_ok_msg.header.size = htons (sizeof (send_ok_msg));
   send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
   send_ok_msg.bytes_msg = htonl (bytes_payload);
@@ -743,7 +747,8 @@ clients_handle_send (void *cls,
   {
     /* client asked for transmission before 'START' */
     GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
 
@@ -752,7 +757,8 @@ clients_handle_send (void *cls,
       sizeof (struct OutboundMessage) + sizeof (struct GNUNET_MessageHeader))
   {
     GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
   obm = (const struct OutboundMessage *) message;
@@ -761,16 +767,11 @@ clients_handle_send (void *cls,
   if (msize < sizeof (struct GNUNET_MessageHeader))
   {
     GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Received `%s' request from client with target `%4s' and first message of type %u and total size %u\n",
-              "SEND",
-              GNUNET_i2s (&obm->peer),
-              ntohs (obmm->type),
-              msize);
   if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
   {
     /* not connected, not allowed to send; can happen due to asynchronous operations */
@@ -781,119 +782,99 @@ clients_handle_send (void *cls,
                               gettext_noop
                               ("# bytes payload dropped (other peer was not connected)"),
                               msize, GNUNET_NO);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_OK);
     return;
   }
-  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Received SEND request for `%s' and first message of type %u and total size %u\n",
+              GNUNET_i2s (&obm->peer),
+              ntohs (obmm->type),
+              msize);
+  GNUNET_SERVER_receive_done (client,
+                              GNUNET_OK);
   stcc = GNUNET_new (struct SendTransmitContinuationContext);
   stcc->target = obm->peer;
   stcc->client = client;
   GNUNET_SERVER_client_keep (client);
-  GST_manipulation_send (&obm->peer, obmm, msize,
-                       GNUNET_TIME_relative_ntoh (obm->timeout),
-                       &handle_send_transmit_continuation, stcc);
+  GST_manipulation_send (&obm->peer,
+                         obmm,
+                         msize,
+                         GNUNET_TIME_relative_ntoh (obm->timeout),
+                         &handle_send_transmit_continuation,
+                         stcc);
 }
 
 
 /**
- * Try to initiate a connection to the given peer if the blacklist
- * allowed it.
+ * Handle request connect message
  *
- * @param cls closure (unused, NULL)
- * @param peer identity of peer that was tested
- * @param result #GNUNET_OK if the connection is allowed,
- *               #GNUNET_NO if not
+ * @param cls closure (always NULL)
+ * @param client identification of the client
+ * @param message the actual message
  */
 static void
-try_connect_if_allowed (void *cls,
-                        const struct GNUNET_PeerIdentity *peer,
-                        int result)
+clients_handle_request_connect (void *cls,
+                                struct GNUNET_SERVER_Client *client,
+                                const struct GNUNET_MessageHeader *message)
 {
-  if (GNUNET_OK != result)
+  const struct TransportRequestConnectMessage *trcm;
+
+  trcm = (const struct TransportRequestConnectMessage *) message;
+  GNUNET_break (0 == ntohl (trcm->reserved));
+  GNUNET_STATISTICS_update (GST_stats,
+                            gettext_noop
+                            ("# REQUEST CONNECT messages received"), 1,
+                            GNUNET_NO);
+  if (0 == memcmp (&trcm->peer,
+                   &GST_my_identity,
+                   sizeof (struct GNUNET_PeerIdentity)))
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                _("Blacklist refuses connection attempt to peer `%s'\n"),
-                GNUNET_i2s (peer));
-    return;                     /* not allowed */
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_OK);
+    return;
   }
-
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              _("Blacklist allows connection attempt to peer `%s'\n"),
-              GNUNET_i2s (peer));
-
-  GST_neighbours_try_connect (peer);
+              "Received a request connect message for peer `%s'\n",
+              GNUNET_i2s (&trcm->peer));
+  GST_neighbours_try_connect (&trcm->peer);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
 
 /**
- * Handle request connect message
+ * Handle request disconnect message
  *
  * @param cls closure (always NULL)
  * @param client identification of the client
  * @param message the actual message
  */
 static void
-clients_handle_request_connect (void *cls,
-                                struct GNUNET_SERVER_Client *client,
-                                const struct GNUNET_MessageHeader *message)
+clients_handle_request_disconnect (void *cls,
+                                   struct GNUNET_SERVER_Client *client,
+                                   const struct GNUNET_MessageHeader *message)
 {
-  const struct TransportRequestConnectMessage *trcm =
-      (const struct TransportRequestConnectMessage *) message;
-
-  if (GNUNET_YES == ntohl (trcm->connect))
-  {
-    GNUNET_STATISTICS_update (GST_stats,
-                              gettext_noop
-                              ("# REQUEST CONNECT messages received"), 1,
-                              GNUNET_NO);
-
-    if (0 == memcmp (&trcm->peer, &GST_my_identity,
-                  sizeof (struct GNUNET_PeerIdentity)))
-    {
-      GNUNET_break_op (0);
-      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                  "Received a request connect message myself `%s'\n",
-                  GNUNET_i2s (&trcm->peer));
-    }
-    else
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                  _("Received a request connect message for peer `%s'\n"),
-                  GNUNET_i2s (&trcm->peer));
-
-      (void) GST_blacklist_test_allowed (&trcm->peer, NULL, &try_connect_if_allowed,
-                                       NULL);
-    }
-  }
-  else if (GNUNET_NO == ntohl (trcm->connect))
-  {
-    GNUNET_STATISTICS_update (GST_stats,
-                              gettext_noop
-                              ("# REQUEST DISCONNECT messages received"), 1,
-                              GNUNET_NO);
-
-    if (0 == memcmp (&trcm->peer, &GST_my_identity,
-                  sizeof (struct GNUNET_PeerIdentity)))
-    {
-      GNUNET_break_op (0);
-      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                  "Received a request disconnect message myself `%s'\n",
-                  GNUNET_i2s (&trcm->peer));
-    }
-    else
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                  _("Received a request disconnect message for peer `%s'\n"),
-                  GNUNET_i2s (&trcm->peer));
-      (void) GST_neighbours_force_disconnect (&trcm->peer);
-    }
-  }
-  else
+  const struct TransportRequestDisconnectMessage *trdm;
+
+  trdm = (const struct TransportRequestDisconnectMessage *) message;
+  GNUNET_break (0 == ntohl (trdm->reserved));
+  GNUNET_STATISTICS_update (GST_stats,
+                            gettext_noop
+                            ("# REQUEST DISCONNECT messages received"), 1,
+                            GNUNET_NO);
+  if (0 == memcmp (&trdm->peer,
+                   &GST_my_identity,
+                   sizeof (struct GNUNET_PeerIdentity)))
   {
-    GNUNET_break_op (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Received a request disconnect message for peer `%s'\n",
+              GNUNET_i2s (&trdm->peer));
+  (void) GST_neighbours_force_disconnect (&trdm->peer);
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
@@ -1028,6 +1009,9 @@ clients_handle_address_to_string (void *cls,
   papi = GST_plugins_printer_find (plugin_name);
   if (NULL == papi)
   {
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                "Failed to find plugin `%s'\n",
+                plugin_name);
     atsm.header.size = ntohs (sizeof (struct AddressToStringResultMessage));
     atsm.header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
     atsm.res = htonl (GNUNET_SYSERR);
@@ -1047,6 +1031,10 @@ clients_handle_address_to_string (void *cls,
   actx->tc = tc;
   GNUNET_CONTAINER_DLL_insert (a2s_head, a2s_tail, actx);
   GNUNET_SERVER_disable_receive_done_warning (client);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Pretty-printing address of %u bytes using plugin `%s'\n",
+              address_len,
+              plugin_name);
   papi->address_pretty_printer (papi->cls,
                                 plugin_name,
                                 address, address_len,
@@ -1081,7 +1069,10 @@ compose_address_iterate_response_message (const struct GNUNET_PeerIdentity *peer
     alen = address->address_length;
   }
   else
-    tlen = alen = 0;
+  {
+    tlen = 0;
+    alen = 0;
+  }
   size = (sizeof (struct PeerIterateResponseMessage) + alen + tlen);
   msg = GNUNET_malloc (size);
   msg->header.size = htons (size);
@@ -1127,7 +1118,10 @@ compose_validation_iterate_response_message (const struct GNUNET_PeerIdentity *p
     alen = address->address_length;
   }
   else
-    tlen = alen = 0;
+  {
+    tlen = 0;
+    alen = 0;
+  }
   size = (sizeof (struct ValidationIterateResponseMessage) + alen + tlen);
   msg = GNUNET_malloc (size);
   msg->header.size = htons (size);
@@ -1176,7 +1170,6 @@ struct IterationContext
  * Output information of validation entries to the given client.
  *
  * @param cls the `struct IterationContext *`
- * @param peer identity of the neighbour
  * @param address the address
  * @param last_validation point in time when last validation was performed
  * @param valid_until point in time how long address is valid
@@ -1185,7 +1178,6 @@ struct IterationContext
  */
 static void
 send_validation_information (void *cls,
-                             const struct GNUNET_PeerIdentity *peer,
                              const struct GNUNET_HELLO_Address *address,
                              struct GNUNET_TIME_Absolute last_validation,
                              struct GNUNET_TIME_Absolute valid_until,
@@ -1195,20 +1187,20 @@ send_validation_information (void *cls,
   struct IterationContext *pc = cls;
   struct ValidationIterateResponseMessage *msg;
 
-  if ( (GNUNET_YES == pc->all) ||
-       (0 == memcmp (peer, &pc->id, sizeof (pc->id))) )
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-        "Sending information about for validation entry for peer `%s' using address `%s'\n",
-        GNUNET_i2s(peer), (address != NULL) ? GST_plugins_a2s (address) : "<none>");
-    msg = compose_validation_iterate_response_message (peer, address);
-    msg->last_validation = GNUNET_TIME_absolute_hton(last_validation);
-    msg->valid_until = GNUNET_TIME_absolute_hton(valid_until);
-    msg->next_validation = GNUNET_TIME_absolute_hton(next_validation);
-    msg->state = htonl ((uint32_t) state);
-    GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
-    GNUNET_free (msg);
-  }
+  if ( (GNUNET_YES != pc->all) &&
+       (0 != memcmp (&address->peer, &pc->id, sizeof (pc->id))) )
+    return;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Sending information about for validation entry for peer `%s' using address `%s'\n",
+              GNUNET_i2s (&address->peer),
+              (NULL != address) ? GST_plugins_a2s (address) : "<none>");
+  msg = compose_validation_iterate_response_message (&address->peer, address);
+  msg->last_validation = GNUNET_TIME_absolute_hton(last_validation);
+  msg->valid_until = GNUNET_TIME_absolute_hton(valid_until);
+  msg->next_validation = GNUNET_TIME_absolute_hton(next_validation);
+  msg->state = htonl ((uint32_t) state);
+  GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
+  GNUNET_free (msg);
 }
 
 
@@ -1235,20 +1227,19 @@ send_peer_information (void *cls,
   struct IterationContext *pc = cls;
   struct PeerIterateResponseMessage *msg;
 
-  if ( (GNUNET_YES == pc->all) ||
-       (0 == memcmp (peer, &pc->id, sizeof (pc->id))) )
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-        "Sending information about `%s' using address `%s' in state `%s'\n",
-        GNUNET_i2s(peer),
-        (address != NULL) ? GST_plugins_a2s (address) : "<none>",
-        GNUNET_TRANSPORT_ps2s (state));
-    msg = compose_address_iterate_response_message (peer, address);
-    msg->state = htonl (state);
-    msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
-    GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
-    GNUNET_free (msg);
-  }
+  if ( (GNUNET_YES != pc->all) &&
+       (0 != memcmp (peer, &pc->id, sizeof (pc->id))) )
+    return;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Sending information about `%s' using address `%s' in state `%s'\n",
+              GNUNET_i2s(peer),
+              (NULL != address) ? GST_plugins_a2s (address) : "<none>",
+              GNUNET_TRANSPORT_ps2s (state));
+  msg = compose_address_iterate_response_message (peer, address);
+  msg->state = htonl (state);
+  msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
+  GNUNET_SERVER_transmit_context_append_message (pc->tc, &msg->header);
+  GNUNET_free (msg);
 }
 
 
@@ -1274,11 +1265,9 @@ clients_handle_monitor_peers (void *cls,
        (NULL != lookup_monitoring_client (peer_monitoring_clients_head,
                                           client)) )
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
-               "ServerClient %p tried to start monitoring twice\n",
-               client);
     GNUNET_break (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    GNUNET_SERVER_receive_done (client,
+                                GNUNET_SYSERR);
     return;
   }
   GNUNET_SERVER_disable_receive_done_warning (client);
@@ -1286,7 +1275,9 @@ clients_handle_monitor_peers (void *cls,
   pc.tc = tc = GNUNET_SERVER_transmit_context_create (client);
 
   /* Send initial list */
-  if (0 == memcmp (&msg->peer, &all_zeros, sizeof (struct GNUNET_PeerIdentity)))
+  if (0 == memcmp (&msg->peer,
+                   &all_zeros,
+                   sizeof (struct GNUNET_PeerIdentity)))
   {
     /* iterate over all neighbours */
     pc.all = GNUNET_YES;
@@ -1298,19 +1289,23 @@ clients_handle_monitor_peers (void *cls,
     pc.all = GNUNET_NO;
     pc.id = msg->peer;
   }
-  GST_neighbours_iterate (&send_peer_information, &pc);
+  GST_neighbours_iterate (&send_peer_information,
+                          &pc);
 
   if (GNUNET_YES != ntohl (msg->one_shot))
   {
-    setup_peer_monitoring_client (client, &msg->peer);
+    setup_peer_monitoring_client (client,
+                                  &msg->peer);
   }
   else
   {
-    GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
-        GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE);
+    GNUNET_SERVER_transmit_context_append_data (tc,
+                                                NULL,
+                                                0,
+                                                GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE);
   }
-
-  GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
+  GNUNET_SERVER_transmit_context_run (tc,
+                                      GNUNET_TIME_UNIT_FOREVER_REL);
 }
 
 
@@ -1347,9 +1342,6 @@ clients_handle_monitor_validation (void *cls,
   if ( (GNUNET_YES != ntohl (msg->one_shot)) &&
        (NULL != lookup_monitoring_client (val_monitoring_clients_head, client)) )
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
-                "ServerClient %p tried to start monitoring twice\n",
-                client);
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
@@ -1359,7 +1351,9 @@ clients_handle_monitor_validation (void *cls,
   pc.tc = tc = GNUNET_SERVER_transmit_context_create (client);
 
   /* Send initial list */
-  if (0 == memcmp (&msg->peer, &all_zeros, sizeof (struct GNUNET_PeerIdentity)))
+  if (0 == memcmp (&msg->peer,
+                   &all_zeros,
+                   sizeof (struct GNUNET_PeerIdentity)))
   {
     /* iterate over all neighbours */
     pc.all = GNUNET_YES;
@@ -1371,8 +1365,8 @@ clients_handle_monitor_validation (void *cls,
     pc.all = GNUNET_NO;
     pc.id = msg->peer;
   }
-
-  GST_validation_iterate (&send_validation_information, &pc);
+  GST_validation_iterate (&send_validation_information,
+                          &pc);
 
   if (GNUNET_YES != ntohl (msg->one_shot))
   {
@@ -1381,7 +1375,7 @@ clients_handle_monitor_validation (void *cls,
   else
   {
     GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
-        GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_RESPONSE);
+                                                GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_VALIDATION_RESPONSE);
   }
   GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
 }
@@ -1414,8 +1408,8 @@ plugin_session_info_cb (void *cls,
 
   if (0 == GNUNET_SERVER_notification_context_get_size (plugin_nc))
   {
-    fprintf (stderr, "UNSUB!\n");
-    GST_plugins_monitor_subscribe (NULL, NULL);
+    GST_plugins_monitor_subscribe (NULL,
+                                   NULL);
     return;
   }
   if ( (NULL == info) &&
@@ -1461,9 +1455,13 @@ plugin_session_info_cb (void *cls,
   msg->plugin_name_len = htons (slen);
   msg->plugin_address_len = htons (alen);
   name = (char *) &msg[1];
-  memcpy (name, info->address->transport_name, slen);
-  addr = &name[slen + 1];
-  memcpy (addr, info->address->address, alen);
+  memcpy (name,
+          info->address->transport_name,
+          slen);
+  addr = &name[slen];
+  memcpy (addr,
+          info->address->address,
+          alen);
   if (NULL != sync_client)
     GNUNET_SERVER_notification_context_unicast (plugin_nc,
                                                 sync_client,
@@ -1491,9 +1489,12 @@ clients_handle_monitor_plugins (void *cls,
 {
   GNUNET_SERVER_client_mark_monitor (client);
   GNUNET_SERVER_disable_receive_done_warning (client);
-  GNUNET_SERVER_notification_context_add (plugin_nc, client);
+  GNUNET_SERVER_notification_context_add (plugin_nc,
+                                          client);
+  GNUNET_assert (NULL == sync_client);
   sync_client = client;
-  GST_plugins_monitor_subscribe (&plugin_session_info_cb, NULL);
+  GST_plugins_monitor_subscribe (&plugin_session_info_cb,
+                                 NULL);
 }
 
 
@@ -1515,6 +1516,9 @@ GST_clients_start (struct GNUNET_SERVER_Handle *server)
     {&clients_handle_request_connect, NULL,
      GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_CONNECT,
      sizeof (struct TransportRequestConnectMessage)},
+    {&clients_handle_request_disconnect, NULL,
+     GNUNET_MESSAGE_TYPE_TRANSPORT_REQUEST_DISCONNECT,
+     sizeof (struct TransportRequestDisconnectMessage)},
     {&clients_handle_address_to_string, NULL,
      GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING, 0},
     {&clients_handle_monitor_peers, NULL,
@@ -1530,7 +1534,8 @@ GST_clients_start (struct GNUNET_SERVER_Handle *server)
      GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
      sizeof (struct BlacklistMessage)},
     {&GST_manipulation_set_metric, NULL,
-     GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC, 0},
+     GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC,
+     sizeof (struct TrafficMetricMessage) },
     {&clients_handle_monitor_plugins, NULL,
      GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START,
      sizeof (struct GNUNET_MessageHeader) },
@@ -1590,6 +1595,10 @@ GST_clients_broadcast (const struct GNUNET_MessageHeader *msg,
 {
   struct TransportClient *tc;
 
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Asked to broadcast message of type %u with %u bytes\n",
+              (unsigned int) ntohs (msg->type),
+              (unsigned int) ntohs (msg->size));
   for (tc = clients_head; NULL != tc; tc = tc->next)
   {
     if ( (GNUNET_YES == may_drop) &&
@@ -1641,23 +1650,19 @@ GST_clients_broadcast_peer_notification (const struct GNUNET_PeerIdentity *peer,
   msg = compose_address_iterate_response_message (peer, address);
   msg->state = htonl (state);
   msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
-  mc = peer_monitoring_clients_head;
-  while (mc != NULL)
-  {
+  for (mc = peer_monitoring_clients_head; NULL != mc; mc = mc->next)
     if ((0 == memcmp (&mc->peer, &all_zeros,
                       sizeof (struct GNUNET_PeerIdentity))) ||
         (0 == memcmp (&mc->peer, peer,
                       sizeof (struct GNUNET_PeerIdentity))))
-    {
-      GNUNET_SERVER_notification_context_unicast (peer_nc, mc->client,
-                                                  &msg->header, GNUNET_NO);
-    }
-
-    mc = mc->next;
-  }
+      GNUNET_SERVER_notification_context_unicast (peer_nc,
+                                                  mc->client,
+                                                  &msg->header,
+                                                  GNUNET_NO);
   GNUNET_free (msg);
 }
 
+
 /**
  * Broadcast the new validation changes to all clients monitoring the peer.
  *
@@ -1681,27 +1686,22 @@ GST_clients_broadcast_validation_notification (const struct GNUNET_PeerIdentity
 
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Sending information about for validation entry for peer `%s' using address `%s'\n",
-              GNUNET_i2s(peer), (address != NULL) ? GST_plugins_a2s (address) : "<none>");
-
+              GNUNET_i2s(peer),
+              (address != NULL) ? GST_plugins_a2s (address) : "<none>");
   msg = compose_validation_iterate_response_message (peer, address);
   msg->last_validation = GNUNET_TIME_absolute_hton(last_validation);
   msg->valid_until = GNUNET_TIME_absolute_hton(valid_until);
   msg->next_validation = GNUNET_TIME_absolute_hton(next_validation);
   msg->state = htonl ((uint32_t) state);
-  mc = val_monitoring_clients_head;
-  while (mc != NULL)
-  {
+  for (mc = val_monitoring_clients_head; NULL != mc; mc = mc->next)
     if ((0 == memcmp (&mc->peer, &all_zeros,
                       sizeof (struct GNUNET_PeerIdentity))) ||
         (0 == memcmp (&mc->peer, peer,
                       sizeof (struct GNUNET_PeerIdentity))))
-    {
-      GNUNET_SERVER_notification_context_unicast (val_nc, mc->client,
-                                                  &msg->header, GNUNET_NO);
-
-    }
-    mc = mc->next;
-  }
+      GNUNET_SERVER_notification_context_unicast (val_nc,
+                                                  mc->client,
+                                                  &msg->header,
+                                                  GNUNET_NO);
   GNUNET_free (msg);
 }