[GNUnet-SVN] r11507 - gnunet/src/core

[gnunet]

Author: grothoff
Date: 2010-05-25 17:54:02 +0200 (Tue, 25 May 2010)
New Revision: 11507

Modified:
   gnunet/src/core/gnunet-service-core.c
Log:
send SET_KEY and PING message together to transport, nicer handling of SET_KEY 
duplication

Modified: gnunet/src/core/gnunet-service-core.c
===================================================================
--- gnunet/src/core/gnunet-service-core.c       2010-05-25 15:53:50 UTC (rev 
11506)
+++ gnunet/src/core/gnunet-service-core.c       2010-05-25 15:54:02 UTC (rev 
11507)
@@ -362,6 +362,17 @@
   unsigned int priority;
 
   /**
+   * If this is a SET_KEY message, what was our connection status when this
+   * message was queued?
+   */
+  enum PeerStateMachine sender_status;
+
+  /**
+   * Is this a SET_KEY message?
+   */
+  int is_setkey;
+
+  /**
    * How long is the message? (number of bytes following
    * the "struct MessageEntry", but not including the
    * size of "struct MessageEntry" itself!)
@@ -381,11 +392,6 @@
    */
   int8_t got_slack;
 
-  /**
-   * Is this a SETKEY message?
-   */
-  int is_setkey;
-
 };
 
 
@@ -2276,7 +2282,15 @@
                  GNUNET_i2s (&n->peer));
       return 0;
     }
-  send_key (n);
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+             _("TRANSPORT connection to peer `%4s' is up, trying to establish 
CORE connection\n"),
+             GNUNET_i2s (&n->peer));
+  if (n->retry_set_key_task != GNUNET_SCHEDULER_NO_TASK)
+    GNUNET_SCHEDULER_cancel (sched,
+                            n->retry_set_key_task);
+  n->retry_set_key_task = GNUNET_SCHEDULER_add_now (sched, 
+                                                   &set_key_retry_task,
+                                                   n);
   return 0;
 }
 
@@ -2383,13 +2397,16 @@
              n->retry_set_key_task = GNUNET_SCHEDULER_NO_TASK;
            }      
          GNUNET_STATISTICS_update (stats,
-                                   gettext_noop ("# SETKEY messages deferred 
(need public key)"), 
+                                   gettext_noop ("# SET_KEY messages deferred 
(need public key)"), 
                                    -1, 
                                    GNUNET_NO);
          send_key (n);
        }
       else
        {
+         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                     _("Failed to obtain public key for peer `%4s', delaying 
processing of SET_KEY\n"),
+                     GNUNET_i2s (&n->peer));
          GNUNET_STATISTICS_update (stats,
                                    gettext_noop ("# Delayed connecting due to 
lack of public key"),
                                    1,
@@ -2479,7 +2496,7 @@
       if (NULL == n->th)
        {
          GNUNET_STATISTICS_update (stats, 
-                                   gettext_noop ("# Asking transport to 
connect (for SETKEY)"), 
+                                   gettext_noop ("# Asking transport to 
connect (for SET_KEY)"), 
                                    1, 
                                    GNUNET_NO);
          n->th = GNUNET_TRANSPORT_notify_transmit_ready (transport,
@@ -2518,24 +2535,59 @@
     {
       if (GNUNET_YES == pos->is_setkey)
        {
+         if (pos->sender_status == n->status)
+           {
 #if DEBUG_CORE
+             GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                         "`%s' message for `%4s' queued already\n",
+                         "SET_KEY",
+                         GNUNET_i2s (&n->peer));
+#endif
+             goto trigger_processing;
+           }
+         GNUNET_CONTAINER_DLL_remove (n->encrypted_head,
+                                      n->encrypted_tail,
+                                      pos);
+         GNUNET_free (pos);
+#if DEBUG_CORE
          GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                     "%s message for `%s' already in the queue, not adding 
another one\n",
-                     "SETKEY",
+                     "Removing queued `%s' message for `%4s', will create a 
new one\n",
+                     "SET_KEY",
                      GNUNET_i2s (&n->peer));
 #endif
-         return;
+         break;
        }
       pos = pos->next;
     }
 
+  /* update status */
+  switch (n->status)
+    {
+    case PEER_STATE_DOWN:
+      n->status = PEER_STATE_KEY_SENT;
+      break;
+    case PEER_STATE_KEY_SENT:
+      break;
+    case PEER_STATE_KEY_RECEIVED:
+      break;
+    case PEER_STATE_KEY_CONFIRMED:
+      break;
+    default:
+      GNUNET_break (0);
+      break;
+    }
+  
+
   /* first, set key message */
   me = GNUNET_malloc (sizeof (struct MessageEntry) +
-                      sizeof (struct SetKeyMessage));
+                      sizeof (struct SetKeyMessage) +
+                     sizeof (struct PingMessage));
   me->deadline = GNUNET_TIME_relative_to_absolute (MAX_SET_KEY_DELAY);
   me->priority = SET_KEY_PRIORITY;
-  me->size = sizeof (struct SetKeyMessage);
+  me->size = sizeof (struct SetKeyMessage) + sizeof (struct PingMessage);
   me->is_setkey = GNUNET_YES;
+  me->got_slack = GNUNET_YES; /* do not defer this one! */
+  me->sender_status = n->status;
   GNUNET_CONTAINER_DLL_insert_after (n->encrypted_head,
                                     n->encrypted_tail,
                                     n->encrypted_tail,
@@ -2561,19 +2613,8 @@
                                             &sm->encrypted_key));
   GNUNET_assert (GNUNET_OK ==
                  GNUNET_CRYPTO_rsa_sign (my_private_key, &sm->purpose,
-                                         &sm->signature));
-  
-  /* second, encrypted PING message */
-  me = GNUNET_malloc (sizeof (struct MessageEntry) +
-                      sizeof (struct PingMessage));
-  me->deadline = GNUNET_TIME_relative_to_absolute (MAX_PING_DELAY);
-  me->priority = PING_PRIORITY;
-  me->size = sizeof (struct PingMessage);
-  GNUNET_CONTAINER_DLL_insert_after (n->encrypted_head,
-                                    n->encrypted_tail,
-                                    n->encrypted_tail,
-                                    me);
-  pm = (struct PingMessage *) &me[1];
+                                         &sm->signature));  
+  pm = (struct PingMessage *) &sm[1];
   pm->header.size = htons (sizeof (struct PingMessage));
   pm->header.type = htons (GNUNET_MESSAGE_TYPE_CORE_PING);
   pp.challenge = htonl (n->ping_challenge);
@@ -2592,24 +2633,8 @@
               &pm->challenge,
               sizeof (struct PingMessage) -
               sizeof (struct GNUNET_MessageHeader));
-  /* update status */
-  switch (n->status)
-    {
-    case PEER_STATE_DOWN:
-      n->status = PEER_STATE_KEY_SENT;
-      break;
-    case PEER_STATE_KEY_SENT:
-      break;
-    case PEER_STATE_KEY_RECEIVED:
-      break;
-    case PEER_STATE_KEY_CONFIRMED:
-      break;
-    default:
-      GNUNET_break (0);
-      break;
-    }
   GNUNET_STATISTICS_update (stats, 
-                           gettext_noop ("# SETKEY and PING messages 
created"), 
+                           gettext_noop ("# SET_KEY and PING messages 
created"), 
                            1, 
                            GNUNET_NO);
 #if DEBUG_CORE
@@ -2618,6 +2643,7 @@
              (unsigned long long) GNUNET_TIME_absolute_get_remaining 
(me->deadline).value,
              "SET_KEY");
 #endif
+ trigger_processing:
   /* trigger queue processing */
   process_encrypted_neighbour_queue (n);
   if ( (n->status != PEER_STATE_KEY_CONFIRMED) &&
@@ -2677,11 +2703,10 @@
        }
       else
        {
-#if DEBUG_CORE
-         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                     "Ignoring `%s' message due to lack of public key for peer 
(failed to obtain one).\n",
-                     "SET_KEY");
-#endif
+         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                     _("Ignoring `%s' message due to lack of public key for 
peer `%4s' (failed to obtain one).\n"),
+                     "SET_KEY",
+                     GNUNET_i2s (&n->peer));
        }
       GNUNET_free (sm);
       return;
@@ -2962,7 +2987,7 @@
                                         GNUNET_TIME_UNIT_MINUTES,
                                         &process_hello_retry_handle_set_key, 
n);
       GNUNET_STATISTICS_update (stats, 
-                               gettext_noop ("# SETKEY messages deferred (need 
public key)"), 
+                               gettext_noop ("# SET_KEY messages deferred 
(need public key)"), 
                                1, 
                                GNUNET_NO);
       return;
@@ -3017,7 +3042,7 @@
       return;
     }
   GNUNET_STATISTICS_update (stats, 
-                           gettext_noop ("# SETKEY messages decrypted"), 
+                           gettext_noop ("# SET_KEY messages decrypted"), 
                            1, 
                            GNUNET_NO);
   n->decrypt_key = k;
@@ -3574,7 +3599,12 @@
   unsigned long long distributable;
   uint64_t need_per_peer;
   uint64_t need_per_second;
-  
+
+#if DEBUG_CORE
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+             "Neighbour quota update calculation running for peer `%4s'\n"
+             GNUNET_i2s (&n->peer));  
+#endif
   n->quota_update_task = GNUNET_SCHEDULER_NO_TASK;
   /* calculate relative preference among all neighbours;
      divides by a bit more to avoid division by zero AND to