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         [System.Runtime.InteropServices.ComVisible (true)]
  40         public class ServerChannelSinkStack : IServerChannelSinkStack, IServerResponseChannelSinkStack
  41         {
  42                 // The stack. It is a chain of ChanelSinkStackEntry.
  43                 ChanelSinkStackEntry _sinkStack = null;
  44
  45                 public ServerChannelSinkStack ()
  46                 {
  47                 }
  48
  49                 public Stream GetResponseStream (IMessage msg, ITransportHeaders headers)
  50             {
  51                         if (_sinkStack == null) throw new RemotingException ("The sink stack is empty");
  52                         return ((IServerChannelSink)_sinkStack.Sink).GetResponseStream (this, _sinkStack.State, msg, headers);
  53                 }
  54
  55                 public object Pop (IServerChannelSink sink)
  56                 {
  57                         // Pops until the sink is found
  58
  59                         while (_sinkStack != null)
  60                         {
  61                                 ChanelSinkStackEntry stackEntry = _sinkStack;
  62                                 _sinkStack = _sinkStack.Next;
  63                                 if (stackEntry.Sink == sink) return stackEntry.State;
  64                         }
  65                         throw new RemotingException ("The current sink stack is empty, or the specified sink was never pushed onto the current stack");
  66                 }
  67
  68                 public void Push (IServerChannelSink sink, object state)
  69                 {
  70                         _sinkStack = new ChanelSinkStackEntry (sink, state, _sinkStack);
  71                 }
  72
  73                 [MonoTODO]
  74                 public void ServerCallback (IAsyncResult ar)
  75                 {
  76                         throw new NotImplementedException ();
  77                 }
  78
  79                 [MonoTODO]
  80                 public void Store (IServerChannelSink sink, object state)
  81                 {
  82                         throw new NotImplementedException ();
  83                 }
  84
  85                 [MonoTODO]
  86                 public void StoreAndDispatch (IServerChannelSink sink, object state)
  87                 {
  88                         throw new NotImplementedException ();
  89                 }
  90
  91                 public void AsyncProcessResponse (IMessage msg, ITransportHeaders headers, Stream stream)
  92                 {
  93                         if (_sinkStack == null) throw new RemotingException ("The current sink stack is empty");
  94
  95                         ChanelSinkStackEntry stackEntry = _sinkStack;
  96                         _sinkStack = _sinkStack.Next;
  97                         ((IServerChannelSink)stackEntry.Sink).AsyncProcessResponse (this, stackEntry.State, msg, headers, stream);
  98
  99                         // Do not call AsyncProcessResponse for each sink in the stack.
 100                         // The sink must recursively call IServerChannelSinkStack.AsyncProcessResponse
 101                         // after its own processing
 102                 }
 103         }
 104 }