//
// System.Runtime.Remoting.Channels.BinaryServerFormatterSink.cs
//
// Author: Duncan Mak (duncan@ximian.com)
// Lluis Sanchez Gual (lluis@ideary.com)
//
// 2002 (C) Copyright, Ximian, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.IO;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.InteropServices;
namespace System.Runtime.Remoting.Channels{
public class BinaryServerFormatterSink : IServerChannelSink, IChannelSinkBase
{
[Serializable]
public enum Protocol
{
Http = 0,
Other = 1,
}
BinaryCore _binaryCore = BinaryCore.DefaultInstance;
IServerChannelSink next_sink;
Protocol protocol;
IChannelReceiver receiver;
public BinaryServerFormatterSink (BinaryServerFormatterSink.Protocol protocol,
IServerChannelSink nextSink,
IChannelReceiver receiver)
{
this.protocol = protocol;
this.next_sink = nextSink;
this.receiver = receiver;
}
internal BinaryCore BinaryCore
{
get { return _binaryCore; }
set { _binaryCore = value; }
}
public IServerChannelSink NextChannelSink {
get {
return next_sink;
}
}
public IDictionary Properties {
get {
return null;
}
}
#if NET_1_1
[ComVisible(false)]
public TypeFilterLevel TypeFilterLevel
{
get { return _binaryCore.TypeFilterLevel; }
set
{
IDictionary props = (IDictionary) ((ICloneable)_binaryCore.Properties).Clone ();
props ["typeFilterLevel"] = value;
_binaryCore = new BinaryCore (this, props, BinaryServerFormatterSinkProvider.AllowedProperties);
}
}
#endif
public void AsyncProcessResponse (IServerResponseChannelSinkStack sinkStack, object state,
IMessage msg, ITransportHeaders headers, Stream stream)
{
ITransportHeaders responseHeaders = new TransportHeaders();
if (sinkStack != null) stream = sinkStack.GetResponseStream (msg, responseHeaders);
if (stream == null) stream = new MemoryStream();
_binaryCore.Serializer.Serialize (stream, msg, null);
if (stream is MemoryStream) stream.Position = 0;
sinkStack.AsyncProcessResponse (msg, responseHeaders, stream);
}
public Stream GetResponseStream (IServerResponseChannelSinkStack sinkStack, object state,
IMessage msg, ITransportHeaders headers)
{
return null;
}
public ServerProcessing ProcessMessage (IServerChannelSinkStack sinkStack,
IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream,
out IMessage responseMsg, out ITransportHeaders responseHeaders, out Stream responseStream)
{
// Check whether the request was already processed by another
// formatter sink and pass the request to the next sink if so.
if (requestMsg != null)
return next_sink.ProcessMessage (sinkStack,
requestMsg,
requestHeaders,
requestStream,
out responseMsg,
out responseHeaders,
out responseStream);
// Check whether the request is suitable for this formatter
// and pass the request to the next sink if not.
// Note that a null content-type is handled as suitable,
// otherwise no other sink will be able to handle the request.
string contentType = requestHeaders["Content-Type"] as string;
if (contentType != null && contentType != "application/octet-stream") {
try {
return next_sink.ProcessMessage (sinkStack,
requestMsg,
requestHeaders,
requestStream,
out responseMsg,
out responseHeaders,
out responseStream);
} catch {
// Let this formatter handle the exception.
}
}
sinkStack.Push (this, null);
ServerProcessing res;
try
{
string url = (string)requestHeaders[CommonTransportKeys.RequestUri];
string uri;
receiver.Parse (url, out uri);
if (uri == null) uri = url;
MethodCallHeaderHandler mhh = new MethodCallHeaderHandler(uri);
requestMsg = (IMessage) _binaryCore.Deserializer.Deserialize (requestStream, new HeaderHandler(mhh.HandleHeaders));
res = next_sink.ProcessMessage (sinkStack, requestMsg, requestHeaders, null, out responseMsg, out responseHeaders, out responseStream);
}
catch (Exception ex)
{
responseMsg = new ReturnMessage (ex, (IMethodCallMessage)requestMsg);
res = ServerProcessing.Complete;
responseHeaders = null;
responseStream = null;
}
if (res == ServerProcessing.Complete)
{
for (int n=0; n<3; n++) {
responseStream = null;
responseHeaders = new TransportHeaders();
if (sinkStack != null) responseStream = sinkStack.GetResponseStream (responseMsg, responseHeaders);
if (responseStream == null) responseStream = new MemoryStream();
try {
_binaryCore.Serializer.Serialize (responseStream, responseMsg);
break;
} catch (Exception ex) {
if (n == 2) throw ex;
else responseMsg = new ReturnMessage (ex, (IMethodCallMessage)requestMsg);
}
}
if (responseStream is MemoryStream) responseStream.Position = 0;
sinkStack.Pop (this);
}
return res;
}
}
internal class MethodCallHeaderHandler
{
string _uri;
public MethodCallHeaderHandler (string uri)
{
_uri = uri;
}
public object HandleHeaders (Header[] headers)
{
return _uri;
}
}
}
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