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) 2007-2010 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 before 22-Nov-2008 00:00:00 GMT by LShift Ltd,
42 // Cohesive Financial Technologies LLC, or Rabbit Technologies Ltd
43 // are Copyright (C) 2007-2008 LShift Ltd, Cohesive Financial
44 // Technologies LLC, and Rabbit Technologies Ltd.
46 // Portions created by LShift Ltd are Copyright (C) 2007-2010 LShift
47 // Ltd. Portions created by Cohesive Financial Technologies LLC are
48 // Copyright (C) 2007-2010 Cohesive Financial Technologies
49 // LLC. Portions created by Rabbit Technologies Ltd are Copyright
50 // (C) 2007-2010 Rabbit Technologies Ltd.
52 // All Rights Reserved.
54 // Contributor(s): ______________________________________.
56 //---------------------------------------------------------------------------
59 using RabbitMQ.Client;
60 using RabbitMQ.Client.Events;
61 using RabbitMQ.Client.Exceptions;
63 // We use spec version 0-9 for common constants such as frame types,
64 // error codes, and the frame end byte, since they don't vary *within
65 // the versions we support*. Obviously we may need to revisit this if
67 using CommonFraming = RabbitMQ.Client.Framing.v0_9;
69 namespace RabbitMQ.Client.Impl
71 ///<summary>Small ISession implementation used only for channel 0.</summary>
72 public class MainSession: Session
74 public bool m_closing = false;
75 public int m_closeClassId;
76 public int m_closeMethodId;
77 public int m_closeOkClassId;
78 public int m_closeOkMethodId;
80 public bool m_closeServerInitiated;
82 private readonly object m_closingLock = new object();
83 public delegate void SessionCloseDelegate();
84 public SessionCloseDelegate m_handler;
86 public MainSession(ConnectionBase connection)
90 connection.Protocol.CreateConnectionClose(0,"",
93 out m_closeOkMethodId);
94 m_closeClassId = request.Method.ProtocolClassId;
95 m_closeMethodId = request.Method.ProtocolMethodId;
98 ///<summary> Set channel 0 as quiescing </summary>
100 /// Method should be idempotent. Cannot use base.Close
101 /// method call because that would prevent us from
102 /// sending/receiving Close/CloseOk commands
104 public void SetSessionClosing(bool closeServerInitiated)
111 m_closeServerInitiated = closeServerInitiated;
116 public SessionCloseDelegate Handler
118 get { return m_handler; }
119 set { m_handler = value; }
122 public override void HandleFrame(Frame frame)
129 base.HandleFrame(frame);
134 if (!m_closeServerInitiated
135 && (frame.Type == CommonFraming.Constants.FrameMethod))
137 MethodBase method = Connection.Protocol.DecodeMethodFrom(frame.GetReader());
138 if ((method.ProtocolClassId == m_closeClassId)
139 && (method.ProtocolMethodId == m_closeMethodId))
141 base.HandleFrame(frame);
145 if ((method.ProtocolClassId == m_closeOkClassId)
146 && (method.ProtocolMethodId == m_closeOkMethodId))
148 // This is the reply (CloseOk) we were looking for
149 // Call any listener attached to this session
155 // Either a non-method frame, or not what we were looking
156 // for. Ignore it - we're quiescing.
160 public override void Transmit(Command cmd)
171 // Allow always for sending close ok
172 // Or if application initiated, allow also for sending close
173 MethodBase method = cmd.m_method;
174 if ( ((method.ProtocolClassId == m_closeOkClassId)
175 && (method.ProtocolMethodId == m_closeOkMethodId))
176 || (!m_closeServerInitiated && (
177 (method.ProtocolClassId == m_closeClassId) &&
178 (method.ProtocolMethodId == m_closeMethodId))