[evolution-ews/gnome-3-16] Bug 746513 - Constant stream of invalid requests for subscription events

[Fabiano Fidêncio <ffidencio src gnome org>]

commit 813efa21c9b3399c7b04e5002211181f76425b01
Author: Fabiano Fidêncio <fidencio redhat com>
Date:   Mon Mar 30 08:39:22 2015 +0200

    Bug 746513 - Constant stream of invalid requests for subscription events
    
    Once an error happens in the streaming, cancel any pending operations
    instead of keeping sending bogus requests over and over again to the
    server.
    
    (cherry picked from commit 472064f8f6e62b971a32df6c5b6cfdb52eb6b539)

 src/server/e-ews-notification.c |   15 +++++++++++----
 1 files changed, 11 insertions(+), 4 deletions(-)
---
diff --git a/src/server/e-ews-notification.c b/src/server/e-ews-notification.c
index c45ecb2..674440f 100644
--- a/src/server/e-ews-notification.c
+++ b/src/server/e-ews-notification.c
@@ -589,7 +589,7 @@ ews_notification_handle_events_param (ESoapParameter *node,
        *events = g_slist_reverse (*events);
 }
 
-static void
+static gboolean
 ews_notification_fire_events_from_response (EEwsNotification *notification,
                                            ESoapResponse *response)
 {
@@ -605,7 +605,7 @@ ews_notification_fire_events_from_response (EEwsNotification *notification,
        if (error != NULL) {
                g_warning (G_STRLOC ": %s\n", error->message);
                g_error_free (error);
-               return;
+               return FALSE;
        }
 
        subparam = e_soap_parameter_get_first_child (param);
@@ -617,7 +617,7 @@ ews_notification_fire_events_from_response (EEwsNotification *notification,
                        g_warning (G_STRLOC ": %s\n", error->message);
                        g_error_free (error);
                        g_slist_free_full (events, (GDestroyNotify) e_ews_notification_event_free);
-                       return;
+                       return FALSE;
                }
 
                if (E_EWS_CONNECTION_UTILS_CHECK_ELEMENT (name, "GetStreamingEventsResponseMessage")) {
@@ -639,6 +639,8 @@ ews_notification_fire_events_from_response (EEwsNotification *notification,
                        g_signal_emit_by_name (notification->priv->connection, "server-notification", events);
                g_slist_free_full (events, (GDestroyNotify) e_ews_notification_event_free);
        }
+
+       return TRUE;
 }
 
 static void
@@ -693,7 +695,12 @@ ews_notification_soup_got_chunk (SoupMessage *msg,
                if (response == NULL)
                        break;
 
-               ews_notification_fire_events_from_response (notification, response);
+               if (!ews_notification_fire_events_from_response (notification, response)) {
+                       soup_session_abort (notification->priv->soup_session);
+
+                       g_object_unref (response);
+                       break;
+               }
                g_object_unref (response);
 
                notification->priv->chunk = g_byte_array_remove_range (notification->priv->chunk, 0, len);