mcs/class/corlib/System.Runtime.Remoting.Channels/ServerChannelSinkStack.cs

   1 //
   2 // System.Runtime.Remoting.Channels.ServerChannelSinkStack.cs
   3 //
   4 // Author: Rodrigo Moya (rodrigo@ximian.com)
   5 //         Lluis Sanchez (lsg@ctv.es)
   6 //
   7 // 2002 (C) Copyright, Ximian, Inc.
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.IO;
  34 using System.Runtime.Remoting.Messaging;
  35 using System.Collections;
  36
  37 namespace System.Runtime.Remoting.Channels
  38 {
  39         public class ServerChannelSinkStack : IServerChannelSinkStack, IServerResponseChannelSinkStack
  40         {
  41                 // The stack. It is a chain of ChanelSinkStackEntry.
  42                 ChanelSinkStackEntry _sinkStack = null;
  43
  44                 public ServerChannelSinkStack ()
  45                 {
  46                 }
  47
  48                 public Stream GetResponseStream (IMessage msg, ITransportHeaders headers)
  49             {
  50                         if (_sinkStack == null) throw new RemotingException ("The sink stack is empty");
  51                         return ((IServerChannelSink)_sinkStack.Sink).GetResponseStream (this, _sinkStack.State, msg, headers);
  52                 }
  53
  54                 public object Pop (IServerChannelSink sink)
  55                 {
  56                         // Pops until the sink is found
  57
  58                         while (_sinkStack != null)
  59                         {
  60                                 ChanelSinkStackEntry stackEntry = _sinkStack;
  61                                 _sinkStack = _sinkStack.Next;
  62                                 if (stackEntry.Sink == sink) return stackEntry.State;
  63                         }
  64                         throw new RemotingException ("The current sink stack is empty, or the specified sink was never pushed onto the current stack");
  65                 }
  66
  67                 public void Push (IServerChannelSink sink, object state)
  68                 {
  69                         _sinkStack = new ChanelSinkStackEntry (sink, state, _sinkStack);
  70                 }
  71
  72                 [MonoTODO]
  73                 public void ServerCallback (IAsyncResult ar)
  74                 {
  75                         throw new NotImplementedException ();
  76                 }
  77
  78                 [MonoTODO]
  79                 public void Store (IServerChannelSink sink, object state)
  80                 {
  81                         throw new NotImplementedException ();
  82                 }
  83
  84                 [MonoTODO]
  85                 public void StoreAndDispatch (IServerChannelSink sink, object state)
  86                 {
  87                         throw new NotImplementedException ();
  88                 }
  89
  90                 public void AsyncProcessResponse (IMessage msg, ITransportHeaders headers, Stream stream)
  91                 {
  92                         if (_sinkStack == null) throw new RemotingException ("The current sink stack is empty");
  93
  94                         ChanelSinkStackEntry stackEntry = _sinkStack;
  95                         _sinkStack = _sinkStack.Next;
  96                         ((IServerChannelSink)stackEntry.Sink).AsyncProcessResponse (this, stackEntry.State, msg, headers, stream);
  97
  98                         // Do not call AsyncProcessResponse for each sink in the stack.
  99                         // The sink must recursively call IServerChannelSinkStack.AsyncProcessResponse
 100                         // after its own processing
 101                 }
 102         }
 103 }