1 // This source code is dual-licensed under the Apache License, version
2 // 2.0, and the Mozilla Public License, version 1.1.
6 //---------------------------------------------------------------------------
7 // Copyright (C) 2007, 2008 LShift Ltd., Cohesive Financial
8 // Technologies LLC., and Rabbit Technologies Ltd.
10 // Licensed under the Apache License, Version 2.0 (the "License");
11 // you may not use this file except in compliance with the License.
12 // You may obtain a copy of the License at
14 // http://www.apache.org/licenses/LICENSE-2.0
16 // Unless required by applicable law or agreed to in writing, software
17 // distributed under the License is distributed on an "AS IS" BASIS,
18 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 // See the License for the specific language governing permissions and
20 // limitations under the License.
21 //---------------------------------------------------------------------------
25 //---------------------------------------------------------------------------
26 // The contents of this file are subject to the Mozilla Public License
27 // Version 1.1 (the "License"); you may not use this file except in
28 // compliance with the License. You may obtain a copy of the License at
29 // http://www.rabbitmq.com/mpl.html
31 // Software distributed under the License is distributed on an "AS IS"
32 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
33 // License for the specific language governing rights and limitations
36 // The Original Code is The RabbitMQ .NET Client.
38 // The Initial Developers of the Original Code are LShift Ltd.,
39 // Cohesive Financial Technologies LLC., and Rabbit Technologies Ltd.
41 // Portions created by LShift Ltd., Cohesive Financial Technologies
42 // LLC., and Rabbit Technologies Ltd. are Copyright (C) 2007, 2008
43 // LShift Ltd., Cohesive Financial Technologies LLC., and Rabbit
46 // All Rights Reserved.
48 // Contributor(s): ______________________________________.
50 //---------------------------------------------------------------------------
53 using RabbitMQ.Client;
54 using RabbitMQ.Client.Events;
55 using RabbitMQ.Client.Exceptions;
57 // We use spec version 0-9 for common constants such as frame types,
58 // error codes, and the frame end byte, since they don't vary *within
59 // the versions we support*. Obviously we may need to revisit this if
61 using CommonFraming = RabbitMQ.Client.Framing.v0_9;
63 namespace RabbitMQ.Client.Impl
65 ///<summary>Small ISession implementation used only for channel 0.</summary>
66 public class MainSession: Session
68 public bool m_closing = false;
69 public int m_closeClassId;
70 public int m_closeMethodId;
71 public int m_closeOkClassId;
72 public int m_closeOkMethodId;
74 public bool m_closeServerInitiated;
76 private readonly object m_closingLock = new object();
77 public delegate void SessionCloseDelegate();
78 public SessionCloseDelegate handler;
80 public MainSession(ConnectionBase connection)
84 connection.Protocol.CreateConnectionClose(0,"",
87 out m_closeOkMethodId);
88 m_closeClassId = request.Method.ProtocolClassId;
89 m_closeMethodId = request.Method.ProtocolMethodId;
92 ///<summary> Set channel 0 as quiescing </summary>
94 /// Method should be idempotent. Cannot use base.Close
95 /// method call because that would prevent us from
96 /// sending/receiving Close/CloseOk commands
98 public void SetSessionClosing(bool closeServerInitiated)
105 m_closeServerInitiated = closeServerInitiated;
110 public SessionCloseDelegate Handler
112 get { return handler; }
113 set { handler = new SessionCloseDelegate(value); }
116 public override void HandleFrame(Frame frame)
123 base.HandleFrame(frame);
128 if (!m_closeServerInitiated
129 && (frame.Type == CommonFraming.Constants.FrameMethod))
131 MethodBase method = Connection.Protocol.DecodeMethodFrom(frame.GetReader());
132 if ((method.ProtocolClassId == m_closeClassId)
133 && (method.ProtocolMethodId == m_closeMethodId))
135 base.HandleFrame(frame);
139 if ((method.ProtocolClassId == m_closeOkClassId)
140 && (method.ProtocolMethodId == m_closeOkMethodId))
142 // This is the reply (CloseOk) we were looking for
143 // Call any listener attached to this session
149 // Either a non-method frame, or not what we were looking
150 // for. Ignore it - we're quiescing.
154 public override void Transmit(Command cmd)
165 // Allow always for sending close ok
166 // Or if application initiated, allow also for sending close
167 MethodBase method = cmd.m_method;
168 if ( ((method.ProtocolClassId == m_closeOkClassId)
169 && (method.ProtocolMethodId == m_closeOkMethodId))
170 || (!m_closeServerInitiated && (
171 (method.ProtocolClassId == m_closeClassId) &&
172 (method.ProtocolMethodId == m_closeMethodId))