1 files changed, 59 insertions, 0 deletions
diff --git a/qpid/dotnet/Qpid.Messaging/IConnectionListener.cs b/qpid/dotnet/Qpid.Messaging/IConnectionListener.cs
new file mode 100644
index 0000000000..02d9eb38da
--- /dev/null
+++ b/qpid/dotnet/Qpid.Messaging/IConnectionListener.cs
@@ -0,0 +1,59 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+namespace Apache.Qpid.Messaging
+{
+    public interface IConnectionListener
+    {
+        /// <summary>
+        /// Called when bytes have been transmitted to the server
+        /// </summary>
+        /// <param>count the number of bytes sent in total since the connection was opened</param>     
+        void BytesSent(long count);
+
+        /// <summary>
+        /// Called when some bytes have been received on a connection
+        /// </summary>
+        /// <param>count the number of bytes received in total since the connection was opened</param>         
+        void BytesReceived(long count);
+
+        /// <summary>
+        /// Called after the infrastructure has detected that failover is required but before attempting failover.
+        /// </summary>
+        /// <param>redirect true if the broker requested redirect. false if failover is occurring due to a connection error.</param>
+        /// <return>true to continue failing over, false to veto failover and raise a connection exception</return>         
+        bool PreFailover(bool redirect);
+
+        /// <summary>
+        /// Called after connection has been made to another broker after failover has been started but before
+        /// any resubscription has been done.
+        /// <return> true to continue with resubscription, false to prevent automatic resubscription. This is useful in
+        /// cases where the application wants to handle resubscription. Note that in the latter case all sessions, producers
+        /// and consumers are invalidated.
+        /// </return
+        bool PreResubscribe();
+
+        /// <summary>
+        /// Called once failover has completed successfully. This is called irrespective of whether the client has
+        /// vetoed automatic resubscription.
+        /// </summary>
+        void FailoverComplete();
+    }
+}