mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Simple/SimpleClientFormatterSink.cs

   1 //
   2 // System.Runtime.Remoting.Channels.Simple.SimpleClientFormatterSink.cs
   3 //
   4 // Author: Dietmar Maurer (dietmar@ximian.com)
   5 //
   6 // 2002 (C) Copyright, Ximian, Inc.
   7 //
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Collections;
  31 using System.IO;
  32 using System.Runtime.Remoting.Messaging;
  33 using System.Runtime.Remoting.Channels;
  34
  35 namespace System.Runtime.Remoting.Channels.Simple
  36 {
  37         public class SimpleClientFormatterSink : IClientFormatterSink,
  38                 IMessageSink, IClientChannelSink, IChannelSinkBase
  39         {
  40                 IClientChannelSink nextInChain;
  41                 SimpleWireFormat format = new SimpleWireFormat ();
  42
  43                 public SimpleClientFormatterSink (IClientChannelSink nextSink)
  44                 {
  45                         nextInChain = nextSink;
  46                 }
  47
  48                 public IClientChannelSink NextChannelSink
  49                 {
  50                         get {
  51                                 return nextInChain;
  52                         }
  53                 }
  54
  55                 public IMessageSink NextSink
  56                 {
  57                         get {
  58                                 return (IMessageSink) nextInChain;
  59                         }
  60                 }
  61
  62                 public IDictionary Properties
  63                 {
  64                         get {
  65                                 return null;
  66                         }
  67                 }
  68
  69                 public IMessageCtrl AsyncProcessMessage (IMessage msg,
  70                                                          IMessageSink replySink)
  71                 {
  72                         throw new NotImplementedException ();
  73                 }
  74
  75                 public void AsyncProcessRequest (IClientChannelSinkStack sinkStack,
  76                                                  IMessage msg,
  77                                                  ITransportHeaders headers,
  78                                                  Stream stream)
  79                 {
  80                         // never called because the formatter sink is
  81                         // always the first in the chain
  82                         throw new NotSupportedException ();
  83                 }
  84
  85                 [MonoTODO]
  86                 public void AsyncProcessResponse (IClientResponseChannelSinkStack sinkStack,
  87                                                   object state,
  88                                                   ITransportHeaders headers,
  89                                                   Stream stream)
  90                 {
  91                         throw new NotImplementedException ();
  92                 }
  93
  94                 public Stream GetRequestStream (IMessage msg,
  95                                                 ITransportHeaders headers)
  96                 {
  97                         // never called
  98                         throw new NotSupportedException ();
  99                 }
 100
 101                 public void ProcessMessage (IMessage msg,
 102                                             ITransportHeaders requestHeaders,
 103                                             Stream requestStream,
 104                                             out ITransportHeaders responseHeaders,
 105                                             out Stream responseStream)
 106                 {
 107                         // never called because the formatter sink is
 108                         // always the first in the chain
 109                         throw new NotSupportedException ();
 110                 }
 111
 112                 public IMessage SyncProcessMessage (IMessage msg)
 113                 {
 114                         IMethodCallMessage call = (IMethodCallMessage)msg;
 115
 116                         // we catch all exceptions to return them as message
 117                         try {
 118                                 // create a new header
 119                                 TransportHeaders req_headers = new TransportHeaders ();
 120                                 req_headers[CommonTransportKeys.RequestUri] = call.Uri;
 121
 122                                 //fixme: set some header values
 123
 124                                 Stream out_stream = new MemoryStream ();
 125
 126                                 // serialize msg to the stream
 127                                 format.SerializeRequest (out_stream, msg);
 128
 129                                 // call the next sink
 130                                 ITransportHeaders resp_headers;
 131                                 Stream resp_stream;
 132                                 nextInChain.ProcessMessage (msg, req_headers, out_stream, out resp_headers,
 133                                                             out resp_stream);
 134
 135                                 // deserialize resp_stream
 136                                 IMessage result = (IMessage) format.DeserializeResponse (resp_stream, call);
 137
 138                                 // it's save to close the stream now
 139                                 resp_stream.Close ();
 140
 141                                 return result;
 142
 143                         } catch (Exception e) {
 144                                  return new ReturnMessage (e, call);
 145                         }
 146                 }
 147         }
 148 }