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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.IO;
using System.ServiceModel.Diagnostics;
using System.Text;
using System.Xml;
using WebTD = System.ServiceModel.Web.Diagnostics.Application.TD;
class WebScriptMetadataMessageEncoderFactory : MessageEncoderFactory
{
const string applicationJavaScriptMediaType = "application/x-javascript";
WebScriptMetadataMessageEncoder messageEncoder;
public WebScriptMetadataMessageEncoderFactory(XmlDictionaryReaderQuotas quotas)
{
messageEncoder = new WebScriptMetadataMessageEncoder(quotas);
}
public override MessageEncoder Encoder
{
get { return messageEncoder; }
}
public override MessageVersion MessageVersion
{
get { return messageEncoder.MessageVersion; }
}
class WebScriptMetadataMessageEncoder : MessageEncoder
{
static UTF8Encoding UTF8EncodingWithoutByteOrderMark = new UTF8Encoding(false);
string contentType;
MessageEncoder innerReadMessageEncoder;
string mediaType;
XmlDictionaryReaderQuotas readerQuotas;
public WebScriptMetadataMessageEncoder(XmlDictionaryReaderQuotas quotas)
{
this.readerQuotas = new XmlDictionaryReaderQuotas();
quotas.CopyTo(this.readerQuotas);
this.mediaType = this.contentType = applicationJavaScriptMediaType;
this.innerReadMessageEncoder = new TextMessageEncodingBindingElement(MessageVersion.None, Encoding.UTF8).CreateMessageEncoderFactory().Encoder;
}
public override string ContentType
{
get { return contentType; }
}
public override string MediaType
{
get { return mediaType; }
}
public override MessageVersion MessageVersion
{
get { return MessageVersion.None; }
}
public override bool IsContentTypeSupported(string contentType)
{
return innerReadMessageEncoder.IsContentTypeSupported(contentType);
}
public override Message ReadMessage(ArraySegment<byte> buffer, BufferManager bufferManager, string contentType)
{
return innerReadMessageEncoder.ReadMessage(buffer, bufferManager, contentType);
}
public override Message ReadMessage(Stream stream, int maxSizeOfHeaders, string contentType)
{
return innerReadMessageEncoder.ReadMessage(stream, maxSizeOfHeaders, contentType);
}
public override ArraySegment<byte> WriteMessage(Message message, int maxMessageSize, BufferManager bufferManager, int messageOffset)
{
if (message == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("message"));
}
if (bufferManager == null)
{
throw TraceUtility.ThrowHelperError(new ArgumentNullException("bufferManager"), message);
}
if (maxMessageSize < 0)
{
throw TraceUtility.ThrowHelperError(new ArgumentOutOfRangeException("maxMessageSize", maxMessageSize,
SR2.GetString(SR2.ValueMustBeNonNegative)), message);
}
if (messageOffset < 0 || messageOffset > maxMessageSize)
{
throw TraceUtility.ThrowHelperError(new ArgumentOutOfRangeException("messageOffset", messageOffset,
SR2.GetString(SR2.JsonValueMustBeInRange, 0, maxMessageSize)), message);
}
ThrowIfMismatchedMessageVersion(message);
message.Properties.Encoder = this;
BufferedMessageWriter messageWriter = new WebScriptMetadataBufferedMessageWriter(this);
ArraySegment<byte> messageData = messageWriter.WriteMessage(message, bufferManager, messageOffset, maxMessageSize);
if (MessageLogger.LogMessagesAtTransportLevel)
{
MessageLogger.LogMessage(ref message, MessageLoggingSource.TransportSend);
}
if (System.ServiceModel.Diagnostics.Application.TD.MessageWrittenByEncoderIsEnabled() && messageData != null)
{
System.ServiceModel.Diagnostics.Application.TD.MessageWrittenByEncoder(EventTraceActivityHelper.TryExtractActivity(message), messageData.Count, this);
}
return messageData;
}
public override void WriteMessage(Message message, Stream stream)
{
if (message == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("message"));
}
if (stream == null)
{
throw TraceUtility.ThrowHelperError(new ArgumentNullException("stream"), message);
}
ThrowIfMismatchedMessageVersion(message);
message.Properties.Encoder = this;
XmlDictionaryWriter xmlWriter = CreateWriter(stream);
xmlWriter.WriteStartDocument();
message.WriteMessage(xmlWriter);
xmlWriter.WriteEndDocument();
xmlWriter.Flush();
xmlWriter.Close();
if (MessageLogger.LogMessagesAtTransportLevel)
{
MessageLogger.LogMessage(ref message, MessageLoggingSource.TransportSend);
}
}
XmlDictionaryWriter CreateWriter(Stream stream)
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;
settings.Encoding = UTF8EncodingWithoutByteOrderMark;
XmlWriter writer = XmlWriter.Create(stream, settings);
return XmlDictionaryWriter.CreateDictionaryWriter(writer);
}
class WebScriptMetadataBufferedMessageWriter : BufferedMessageWriter
{
WebScriptMetadataMessageEncoder messageEncoder;
public WebScriptMetadataBufferedMessageWriter(WebScriptMetadataMessageEncoder messageEncoder)
{
this.messageEncoder = messageEncoder;
}
protected override void OnWriteEndMessage(XmlDictionaryWriter writer)
{
}
protected override void OnWriteStartMessage(XmlDictionaryWriter writer)
{
}
protected override void ReturnXmlWriter(XmlDictionaryWriter writer)
{
writer.Close();
}
protected override XmlDictionaryWriter TakeXmlWriter(Stream stream)
{
return messageEncoder.CreateWriter(stream);
}
}
}
}
}
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