[GNUnet-SVN] r22589 - gnunet/src/transport

[gnunet]

Author: wachs
Date: 2012-07-10 15:35:28 +0200 (Tue, 10 Jul 2012)
New Revision: 22589

Modified:
   gnunet/src/transport/plugin_transport_http.c
   gnunet/src/transport/plugin_transport_http_client.c
Log:
- improving client disconnect code to fix mantis 2486


Modified: gnunet/src/transport/plugin_transport_http.c
===================================================================
--- gnunet/src/transport/plugin_transport_http.c        2012-07-10 10:59:08 UTC 
(rev 22588)
+++ gnunet/src/transport/plugin_transport_http.c        2012-07-10 13:35:28 UTC 
(rev 22589)
@@ -585,12 +585,34 @@
   return GNUNET_NO;
 }
 
+/**
+ * Deleting the session
+ * Must not be used afterwards
+ */
 
 void
 delete_session (struct Session *s)
 {
+  struct Plugin *plugin = s->plugin;
   stop_session_timeout(s);
 
+  GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
+  struct HTTP_Message *msg = s->msg_head;
+  struct HTTP_Message *tmp = NULL;
+
+  while (msg != NULL)
+  {
+    tmp = msg->next;
+
+    GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
+    if (msg->transmit_cont != NULL)
+    {
+      msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
+    }
+    GNUNET_free (msg);
+    msg = tmp;
+  }
+
   if (s->msg_tk != NULL)
   {
     GNUNET_SERVER_mst_destroy (s->msg_tk);
@@ -669,11 +691,12 @@
 {
   struct Plugin *plugin = cls;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                   "Notifying transport about ending session %p\n");
+  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+                   "Notifying transport about ending session %p (`%s')\n",
+                   s,
+                   http_plugin_address_to_string(NULL, s->addr,s->addrlen));
 
   plugin->env->session_end (plugin->env->cls, peer, s);
-  GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
   delete_session (s);
 }
 
@@ -845,7 +868,7 @@
   struct Session *next = NULL;
   struct Session *s = plugin->head;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
                    "Transport tells me to disconnect `%s'\n",
                    GNUNET_i2s (target));
   while (s != NULL)
@@ -853,29 +876,15 @@
     next = s->next;
     if (0 == memcmp (target, &s->target, sizeof (struct GNUNET_PeerIdentity)))
     {
+      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+                       "Disconnecting %s session %p to `%s'\n",
+                       (s->inbound == GNUNET_NO) ? "outbound" : "inbound",
+                       s, GNUNET_i2s (target));
+
       if (s->inbound == GNUNET_NO)
         GNUNET_assert (GNUNET_OK == client_disconnect (s));
       else
         GNUNET_assert (GNUNET_OK == server_disconnect (s));
-      GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
-
-      struct HTTP_Message *msg = s->msg_head;
-      struct HTTP_Message *tmp = NULL;
-
-      while (msg != NULL)
-      {
-        tmp = msg->next;
-
-        GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
-        if (msg->transmit_cont != NULL)
-        {
-          msg->transmit_cont (msg->transmit_cont_cls, target, GNUNET_SYSERR);
-        }
-        GNUNET_free (msg);
-        msg = tmp;
-      }
-
-      delete_session (s);
     }
     s = next;
   }
@@ -1326,10 +1335,6 @@
   while (res > 0)
   {
     res--;
-#if 0
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, _("FREEING %s\n"),
-                     GNUNET_a2s (addrs[res], addrlens[res]));
-#endif
     GNUNET_assert (addrs[res] != NULL);
     GNUNET_free (addrs[res]);
   }
@@ -1500,7 +1505,17 @@
   return res;
 }
 
+#define TESTING GNUNET_NO
 
+#if TESTING
+#define TIMEOUT_LOG GNUNET_ERROR_TYPE_ERROR
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
+#else
+#define TIMEOUT_LOG GNUNET_ERROR_TYPE_DEBUG
+#define TIMEOUT GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
+#endif
+
+
 /**
  * Session was idle, so disconnect it
  */
@@ -1511,9 +1526,9 @@
   struct Session *s = cls;
 
   s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+  GNUNET_log (TIMEOUT_LOG,
               "Session %p was idle for %llu ms, disconnecting\n",
-              s, (unsigned long long) 
GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+              s, (unsigned long long) TIMEOUT.rel_value);
 
   /* call session destroy function */
   if (s->inbound == GNUNET_NO)
@@ -1531,12 +1546,12 @@
 {
  GNUNET_assert (NULL != s);
  GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
- s->timeout_task =  GNUNET_SCHEDULER_add_delayed 
(GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ s->timeout_task =  GNUNET_SCHEDULER_add_delayed (TIMEOUT,
                                                   &session_timeout,
                                                   s);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (TIMEOUT_LOG,
              "Timeout for session %p set to %llu ms\n",
-             s,  (unsigned long long) 
GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+             s,  (unsigned long long) TIMEOUT.rel_value);
 }
 
 
@@ -1550,12 +1565,12 @@
  GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
 
  GNUNET_SCHEDULER_cancel (s->timeout_task);
- s->timeout_task =  GNUNET_SCHEDULER_add_delayed 
(GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ s->timeout_task =  GNUNET_SCHEDULER_add_delayed (TIMEOUT,
                                                   &session_timeout,
                                                   s);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (TIMEOUT_LOG,
              "Timeout rescheduled for session %p set to %llu ms\n",
-             s, (unsigned long long) 
GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+             s, (unsigned long long) TIMEOUT.rel_value);
 }
 
 
@@ -1571,9 +1586,9 @@
  {
    GNUNET_SCHEDULER_cancel (s->timeout_task);
    s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-               "Timeout stopped for session %p canceled\n",
-               s, (unsigned long long) 
GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+   GNUNET_log (TIMEOUT_LOG,
+               "Timeout stopped for session %p\n",
+               s);
  }
 }
 
@@ -1680,6 +1695,7 @@
   struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
   struct Plugin *plugin = api->cls;
   struct Session *s;
+  struct Session *next;
 
   if (NULL == plugin)
   {
@@ -1694,13 +1710,14 @@
   s = plugin->head;
   while (s != NULL)
   {
+    next = s->next;
     GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
                      "Disconnecting `%s' \n", GNUNET_i2s (&s->target));
     if (s->inbound == GNUNET_NO)
       GNUNET_assert (GNUNET_OK == client_disconnect (s));
     else
       GNUNET_assert (GNUNET_OK == server_disconnect (s));
-    s = s->next;
+    s = next;
   }
 
   GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Stopping server\n");
@@ -1711,34 +1728,6 @@
   /* Stop client */
   client_stop (plugin);
 
-  /* deleting up sessions */
-  s = plugin->head;
-  while (s != NULL)
-  {
-    struct Session *t = s->next;
-
-    GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
-
-    struct HTTP_Message *msg = s->msg_head;
-    struct HTTP_Message *tmp = NULL;
-
-    while (msg != NULL)
-    {
-      tmp = msg->next;
-
-      GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
-      if (msg->transmit_cont != NULL)
-      {
-        msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
-      }
-      GNUNET_free (msg);
-      msg = tmp;
-    }
-
-    delete_session (s);
-    s = t;
-  }
-
   GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
                    "Plugin `%s' unloaded\n", plugin->name);
   GNUNET_free_non_null (plugin->server_addr_v4);

Modified: gnunet/src/transport/plugin_transport_http_client.c
===================================================================
--- gnunet/src/transport/plugin_transport_http_client.c 2012-07-10 10:59:08 UTC 
(rev 22588)
+++ gnunet/src/transport/plugin_transport_http_client.c 2012-07-10 13:35:28 UTC 
(rev 22589)
@@ -200,10 +200,9 @@
       struct Session *s = NULL;
       char *d = (char *) s;
 
-
-      //GNUNET_assert (easy_h != NULL);
       if (easy_h == NULL)
       {
+        GNUNET_break (0);
         GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
                          "Client: connection to ended with reason %i: `%s', %i 
handles running\n",
                          msg->data.result,
@@ -222,7 +221,6 @@
       }
 
       GNUNET_assert (s != NULL);
-
       if (msg->msg == CURLMSG_DONE)
       {
         GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
@@ -233,13 +231,8 @@
                          msg->data.result,
                          curl_easy_strerror (msg->data.result));
 
+        /* Disconnect other transmission direction and tell transport */
         client_disconnect (s);
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 
-                        plugin->name,
-                        "Notifying about ended session to peer `%s' `%s'\n", 
-                        GNUNET_i2s (&s->target), 
-                        http_plugin_address_to_string (plugin, s->addr, 
s->addrlen));
-        notify_session_end (plugin, &s->target, s);
       }
     }
   }
@@ -266,13 +259,14 @@
   if (s->client_put != NULL)
   {
     GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Client: %p Deleting outbound PUT session to peer `%s'\n",
-                     s->client_put, GNUNET_i2s (&s->target));
+                     "Client: %p / %p Deleting outbound PUT session to peer 
`%s'\n",
+                     s, s->client_put, GNUNET_i2s (&s->target));
 
+    /* remove curl handle from multi handle */
     mret = curl_multi_remove_handle (plugin->client_mh, s->client_put);
     if (mret != CURLM_OK)
     {
-      curl_easy_cleanup (s->client_put);
+      /* clean up easy handle, handle is now invalid and free'd */
       res = GNUNET_SYSERR;
       GNUNET_break (0);
     }
@@ -290,13 +284,15 @@
   if (s->client_get != NULL)
   {
     GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Client: %p Deleting outbound GET session to peer `%s'\n",
+                     "Client: %p / %p Deleting outbound GET session to peer 
`%s'\n",
+                     s,
                      s->client_get, GNUNET_i2s (&s->target));
 
+    /* remove curl handle from multi handle */
     mret = curl_multi_remove_handle (plugin->client_mh, s->client_get);
     if (mret != CURLM_OK)
     {
-      curl_easy_cleanup (s->client_get);
+      /* clean up easy handle, handle is now invalid and free'd */
       res = GNUNET_SYSERR;
       GNUNET_break (0);
     }
@@ -317,6 +313,8 @@
 
   plugin->cur_connections -= 2;
 
+  notify_session_end (plugin, &s->target, s);
+
   GNUNET_assert (plugin->outbound_sessions > 0);
   plugin->outbound_sessions --;
   GNUNET_STATISTICS_set (plugin->env->stats,
@@ -330,7 +328,6 @@
     GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
     plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
   }
-
   client_schedule (plugin, GNUNET_YES);
 
   return res;