mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.MetadataServices/SdlChannelSink.cs

   1 //
   2 // System.Runtime.Remoting.MetadataServices.SdlChannelSink
   3 //
   4 // Authors:
   5 //      Martin Willemoes Hansen (mwh@sysrq.dk)
   6 //
   7 // (C) 2003 Martin Willemoes Hansen
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Runtime.Remoting.Channels;
  32 using System.Runtime.Remoting.Messaging;
  33 using System.IO;
  34 using System.Collections;
  35 using System.Text;
  36
  37 namespace System.Runtime.Remoting.MetadataServices
  38 {
  39         public class SdlChannelSink : IServerChannelSink, IChannelSinkBase
  40         {
  41                 IServerChannelSink _next;
  42                 IChannelReceiver _channel;
  43
  44                 public SdlChannelSink (IChannelReceiver channel, IServerChannelSink next)
  45                 {
  46                         _next = next;
  47                         _channel = channel;
  48                 }
  49
  50                 public IServerChannelSink NextChannelSink
  51                 {
  52                         get { return _next; }
  53                 }
  54
  55                 public IDictionary Properties
  56                 {
  57                         get { return null; }
  58                 }
  59
  60                 public void AsyncProcessResponse (IServerResponseChannelSinkStack sinkStack,
  61                                                   object state,
  62                                                   IMessage msg,
  63                                                   ITransportHeaders headers,
  64                                                   Stream stream)
  65                 {
  66                         throw new NotSupportedException ();     // Never called
  67                 }
  68
  69                 public Stream GetResponseStream (IServerResponseChannelSinkStack sinkStack,
  70                                                  object state,
  71                                                  IMessage msg,
  72                                                  ITransportHeaders headers)
  73                 {
  74                         return null;
  75                 }
  76
  77                 public ServerProcessing ProcessMessage (IServerChannelSinkStack sinkStack,
  78                                                         IMessage requestMsg,
  79                                                         ITransportHeaders requestHeaders,
  80                                                         Stream requestStream,
  81                                                         out IMessage responseMsg,
  82                                                         out ITransportHeaders responseHeaders,
  83                                                         out Stream responseStream)
  84                 {
  85                         responseMsg = null;
  86                         responseStream = null;
  87                         responseHeaders = null;
  88                         string verb = requestHeaders [CommonTransportKeys.RequestVerb] as string;
  89                         string uri = (string) requestHeaders [CommonTransportKeys.RequestUri];
  90
  91                         if (verb == "GET" && uri.EndsWith ("?wsdl"))
  92                         {
  93                                 try
  94                                 {
  95                                         uri = uri.Substring (0, uri.Length - 5);
  96                                         Type type = RemotingServices.GetServerTypeForUri (uri);
  97
  98                                         string url = _channel.GetUrlsForUri (uri)[0];
  99                                         ServiceType st = new ServiceType (type, url);
 100
 101                                         responseStream = new MemoryStream ();
 102                                         MetaData.ConvertTypesToSchemaToStream (new ServiceType[] {st}, SdlType.Wsdl, responseStream);
 103                                         responseStream.Position = 0;
 104                                         responseMsg = null;
 105                                         responseHeaders = new TransportHeaders ();
 106                                         responseHeaders [CommonTransportKeys.ContentType] = "text/xml";
 107                                 }
 108                                 catch (Exception ex)
 109                                 {
 110                                         responseHeaders = new TransportHeaders ();
 111                                         responseHeaders [CommonTransportKeys.HttpStatusCode] = "500";
 112                                         responseStream = new MemoryStream (Encoding.UTF8.GetBytes (ex.ToString ()));
 113                                 }
 114                                 return ServerProcessing.Complete;
 115                         }
 116                         else
 117                                 return _next.ProcessMessage (sinkStack, requestMsg, requestHeaders, requestStream, out responseMsg, out responseHeaders, out responseStream);
 118                 }
 119         }
 120 }