more code cleanup
[oweals/gnunet.git] / src / transport / gnunet-service-transport.c
index eda1fec7efc1b3daa8638dd1dc1a6a63c8773f88..ae88b4f6f0fdb6be094f188f41db7548989ac7b1 100644 (file)
@@ -2014,6 +2014,9 @@ remove_session_validations (void *cls,
  * re-establish the connection or signal the disconnect
  * to the CORE.
  *
+ * Only signal CORE level disconnect if ALL addresses
+ * for the peer are exhausted.
+ *
  * @param p overall plugin context
  * @param nl neighbour that was disconnected
  */
@@ -2032,7 +2035,7 @@ try_fast_reconnect (struct TransportPlugin *p,
      So we should consider:
      1) ideally: our own willingness / need to connect
      2) prior failures to connect to this peer (by plugin)
-     3) ideally: reaons why other peer terminated (as far as knowable)
+     3) ideally: reasons why other peer terminated (as far as knowable)
      
      Most importantly, it must be POSSIBLE for another peer to terminate
      a connection for a while (without us instantly re-establishing it).
@@ -2045,8 +2048,20 @@ try_fast_reconnect (struct TransportPlugin *p,
 
      Finally, this needs to be tested throughly... */                                                          
 
+  /*
+   * GNUNET_NO in the call below makes transport disconnect the peer,
+   * even if only a single address (out of say, six) went away.  This
+   * function must be careful to ONLY disconnect if the peer is gone,
+   * not just a specifi address.
+   *
+   * More specifically, half the places it was used had it WRONG.
+   */
+
   /* No reconnect, signal disconnect instead! */
-  disconnect_neighbour (nl, GNUNET_NO);  
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+            "Disconnecting peer `%4s', %s\n", GNUNET_i2s(&nl->id),
+            "try_fast_reconnect");
+  disconnect_neighbour (nl, GNUNET_YES);
 }
 
 
@@ -2130,7 +2145,18 @@ plugin_env_session_end  (void *cls,
       pos = pos->next;
     }
   /* no valid addresses left, signal disconnect! */
-  disconnect_neighbour (nl, GNUNET_NO);  
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+            "Disconnecting peer `%4s', %s\n", GNUNET_i2s(&nl->id),
+            "plugin_env_session_end");
+  /* FIXME: This doesn't mean there are no addresses left for this PEER,
+   * it means there aren't any left for this PLUGIN/PEER combination! So
+   * calling disconnect_neighbor here with GNUNET_NO forces disconnect
+   * when it isn't necessary. Using GNUNET_YES at least checks to see
+   * if there are any addresses that work first, so as not to overdo it.
+   * --NE
+   */
+  disconnect_neighbour (nl, GNUNET_YES);
 }
 
 
@@ -2670,6 +2696,10 @@ add_hello_for_peer (void *cls,
 
   if (peer == NULL)
     {
+      GNUNET_STATISTICS_update (stats,
+                                gettext_noop ("# outstanding peerinfo iterate requests"),
+                                -1,
+                                GNUNET_NO);
       n->piter = NULL;
       return;
     } 
@@ -2751,6 +2781,14 @@ setup_new_neighbour (const struct GNUNET_PeerIdentity *peer,
                                                   &neighbour_timeout_task, n);
   if (do_hello)
     {
+      GNUNET_STATISTICS_update (stats,
+                                gettext_noop ("# peerinfo iterate requests"),
+                                1,
+                                GNUNET_NO);
+      GNUNET_STATISTICS_update (stats,
+                                gettext_noop ("# outstanding peerinfo iterate requests"),
+                                1,
+                                GNUNET_NO);
       n->piter = GNUNET_PEERINFO_iterate (peerinfo, peer,
                                          GNUNET_TIME_UNIT_FOREVER_REL,
                                          &add_hello_for_peer, n);
@@ -3021,7 +3059,12 @@ confirm_or_drop_neighbour (void *cls,
   struct NeighbourList * orig = cls;
 
   if (n == NULL)
-    disconnect_neighbour (orig, GNUNET_NO);
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Disconnecting peer `%4s', %s\n", GNUNET_i2s(&orig->id),
+              "confirm_or_drop_neighboUr");
+      disconnect_neighbour (orig, GNUNET_NO);
+    }
 }
 
 
@@ -3339,13 +3382,19 @@ handle_payload_message (const struct GNUNET_MessageHeader *message,
   msize = ntohs (message->size);
   if (n->received_pong == GNUNET_NO)
     {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                  "Received message of type %u and size %u from `%4s', but no pong yet!!\n",
+                  ntohs (message->type),
+                  ntohs (message->size),
+                  GNUNET_i2s (&n->id));
       GNUNET_free_non_null (n->pre_connect_message_buffer);
       n->pre_connect_message_buffer = GNUNET_malloc (msize);
       memcpy (n->pre_connect_message_buffer, message, msize);
       return;
     }
+
 #if DEBUG_TRANSPORT
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+  GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
              "Received message of type %u and size %u from `%4s', sending to all clients.\n",
              ntohs (message->type), 
              ntohs (message->size), 
@@ -3437,7 +3486,7 @@ check_pending_validation (void *cls,
   addr = (const char*) &pong[1];
   slen = strlen (ve->transport_name) + 1;
   if ( (ps - sizeof (struct TransportPongMessage) != ve->addrlen + slen) ||
-       (ve->challenge != challenge) ||       
+       (ve->challenge != challenge) ||
        (addr[slen-1] != '\0') ||
        (0 != strcmp (addr, ve->transport_name)) || 
        (ntohl (pong->purpose.size) 
@@ -3445,7 +3494,10 @@ check_pending_validation (void *cls,
        sizeof (uint32_t) +
        sizeof (struct GNUNET_TIME_AbsoluteNBO) +
        sizeof (struct GNUNET_PeerIdentity) + ve->addrlen + slen) )
-    return GNUNET_YES;
+    {
+      return GNUNET_YES;
+    }
+
   alen = ps - sizeof (struct TransportPongMessage) - slen;
   switch (ntohl (pong->purpose.purpose))
     {
@@ -3454,7 +3506,9 @@ check_pending_validation (void *cls,
           (0 != memcmp (&addr[slen],
                         ve->addr,
                         ve->addrlen)) )
-       return GNUNET_YES; /* different entry, keep trying! */
+        {
+          return GNUNET_YES; /* different entry, keep trying! */
+        }
       if (0 != memcmp (&pong->pid,
                       key,
                       sizeof (struct GNUNET_PeerIdentity))) 
@@ -3471,6 +3525,7 @@ check_pending_validation (void *cls,
          GNUNET_break_op (0);
          return GNUNET_NO;
        }
+
 #if DEBUG_TRANSPORT
       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                  "Confirmed validity of address, peer `%4s' has address `%s' (%s).\n",
@@ -3483,7 +3538,9 @@ check_pending_validation (void *cls,
       break;
     case GNUNET_SIGNATURE_PURPOSE_TRANSPORT_PONG_USING:
       if (ve->addrlen != 0) 
-       return GNUNET_YES; /* different entry, keep trying */
+        {
+          return GNUNET_YES; /* different entry, keep trying */
+        }
       if ( (0 != memcmp (&pong->pid,
                         &my_identity,
                         sizeof (struct GNUNET_PeerIdentity))) ||
@@ -3510,7 +3567,7 @@ check_pending_validation (void *cls,
        }
       if (oal == NULL)
        {
-         GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                      _("Not accepting PONG with address `%s' since I cannot confirm having this address.\n"),
                      a2s (ve->transport_name,
                           &addr[slen],
@@ -3526,6 +3583,7 @@ check_pending_validation (void *cls,
          GNUNET_break_op (0);
          return GNUNET_NO;
        }
+
 #if DEBUG_TRANSPORT
       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                  "Confirmed that peer `%4s' is talking to us using address `%s' (%s) for us.\n",
@@ -3930,6 +3988,10 @@ check_hello_validated (void *cls,
 
   if (peer == NULL)
     {
+      GNUNET_STATISTICS_update (stats,
+                                gettext_noop ("# outstanding peerinfo iterate requests"),
+                                -1,
+                                GNUNET_NO);
       chvc->piter = NULL;
       if (GNUNET_NO == chvc->hello_known)
        {
@@ -4130,6 +4192,14 @@ process_hello (struct TransportPlugin *plugin,
                               chvc);
   /* finally, check if HELLO was previously validated
      (continuation will then schedule actual validation) */
+  GNUNET_STATISTICS_update (stats,
+                            gettext_noop ("# peerinfo iterate requests"),
+                            1,
+                            GNUNET_NO);
+  GNUNET_STATISTICS_update (stats,
+                            gettext_noop ("# outstanding peerinfo iterate requests"),
+                            1,
+                            GNUNET_NO);
   chvc->piter = GNUNET_PEERINFO_iterate (peerinfo,
                                          &target,
                                          HELLO_VERIFICATION_TIMEOUT,
@@ -4147,9 +4217,9 @@ process_hello (struct TransportPlugin *plugin,
  * gone.
  *
  * @param n the neighbour list entry for the peer
- * @param check should we just check if all plugins
- *        disconnected or must we ask all plugins to
- *        disconnect?
+ * @param check GNUNET_YES to check if ALL addresses for this peer
+ *              are gone, GNUNET_NO to force a disconnect of the peer
+ *              regardless of whether other addresses exist.
  */
 static void
 disconnect_neighbour (struct NeighbourList *n, int check)
@@ -4170,7 +4240,12 @@ disconnect_neighbour (struct NeighbourList *n, int check)
           while (peer_addresses != NULL)
             {
               if (GNUNET_YES == peer_addresses->connected)
-                return;             /* still connected */
+                {
+                  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                            "NOT Disconnecting from `%4s', still have live addresses!\n",
+                            GNUNET_i2s (&n->id));
+                  return;             /* still connected */
+                }
               peer_addresses = peer_addresses->next;
             }
           rpos = rpos->next;
@@ -4261,6 +4336,10 @@ disconnect_neighbour (struct NeighbourList *n, int check)
   if (n->piter != NULL)
     {
       GNUNET_PEERINFO_iterate_cancel (n->piter);
+      GNUNET_STATISTICS_update (stats,
+                                gettext_noop ("# outstanding peerinfo iterate requests"),
+                                -1,
+                                GNUNET_NO);
       n->piter = NULL;
     }
   /* finally, free n itself */
@@ -4554,7 +4633,6 @@ plugin_env_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
   uint16_t msize;
   struct NeighbourList *n;
   struct GNUNET_TIME_Relative ret;
-
   if (is_blacklisted (peer, plugin))
     return GNUNET_TIME_UNIT_FOREVER_REL;
 
@@ -4617,6 +4695,7 @@ plugin_env_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
                                    GNUNET_NO);
          return GNUNET_CONSTANTS_QUOTA_VIOLATION_TIMEOUT;
        }
+
 #if DEBUG_PING_PONG
           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                       "Received message of type %u and size %u from `%4s', sending to all clients.\n",
@@ -4647,7 +4726,7 @@ plugin_env_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
   ret = GNUNET_BANDWIDTH_tracker_get_delay (&n->in_tracker, 0);
   if (ret.value > 0)
     {
-      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                  "Throttling read (%llu bytes excess at %u b/s), waiting %llums before reading more.\n",
                  (unsigned long long) n->in_tracker.consumption_since_last_update__,
                  (unsigned int) n->in_tracker.available_bytes_per_s__,
@@ -4915,7 +4994,12 @@ handle_set_quota (void *cls,
   GNUNET_BANDWIDTH_tracker_update_quota (&n->in_tracker,
                                         qsm->quota);
   if (0 == ntohl (qsm->quota.value__)) 
-    disconnect_neighbour (n, GNUNET_NO);    
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Disconnecting peer `%4s', %s\n", GNUNET_i2s(&n->id),
+                "SET_QUOTA");
+      disconnect_neighbour (n, GNUNET_NO);
+    }
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
@@ -5022,6 +5106,7 @@ create_environment (struct TransportPlugin *plug)
   plug->env.cfg = cfg;
   plug->env.sched = sched;
   plug->env.my_identity = &my_identity;
+  plug->env.our_hello = &our_hello;
   plug->env.cls = plug;
   plug->env.receive = &plugin_env_receive;
   plug->env.notify_address = &plugin_env_notify_address;
@@ -5172,7 +5257,12 @@ shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
   struct CheckHelloValidatedContext *chvc;
 
   while (neighbours != NULL)
-    disconnect_neighbour (neighbours, GNUNET_NO);
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Disconnecting peer `%4s', %s\n", GNUNET_i2s(&neighbours->id),
+              "SHUTDOWN_TASK");
+      disconnect_neighbour (neighbours, GNUNET_NO);
+    }
 #if DEBUG_TRANSPORT
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Transport service is unloading plugins...\n");
@@ -5211,7 +5301,13 @@ shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
     {
       chvc_head = chvc->next;
       if (chvc->piter != NULL)
-       GNUNET_PEERINFO_iterate_cancel (chvc->piter);      
+        {
+          GNUNET_PEERINFO_iterate_cancel (chvc->piter);
+          GNUNET_STATISTICS_update (stats,
+                                    gettext_noop ("# outstanding peerinfo iterate requests"),
+                                    -1,
+                                    GNUNET_NO);
+        }
       else
        GNUNET_break (0);
       GNUNET_assert (chvc->ve_count == 0);