JsonBufferedMessageWriter TakeBufferedWriter()
{
if (bufferedWriterPool == null)
{
lock (ThisLock)
{
if (bufferedWriterPool == null)
{
bufferedWriterPool = new SynchronizedPool <JsonBufferedMessageWriter>(maxWritePoolSize);
}
}
}
JsonBufferedMessageWriter messageWriter = bufferedWriterPool.Take();
if (messageWriter == null)
{
messageWriter = new JsonBufferedMessageWriter(this);
}
return(messageWriter);
}
void ReturnMessageWriter(JsonBufferedMessageWriter messageWriter)
{
bufferedWriterPool.Return(messageWriter);
}
JsonBufferedMessageWriter TakeBufferedWriter()
{
if (bufferedWriterPool == null)
{
lock (ThisLock)
{
if (bufferedWriterPool == null)
{
bufferedWriterPool = new SynchronizedPool<JsonBufferedMessageWriter>(maxWritePoolSize);
}
}
}
JsonBufferedMessageWriter messageWriter = bufferedWriterPool.Take();
if (messageWriter == null)
{
messageWriter = new JsonBufferedMessageWriter(this);
}
return messageWriter;
}
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);
}
EventTraceActivity eventTraceActivity = null;
if (WebTD.JsonMessageEncodingStartIsEnabled())
{
eventTraceActivity = EventTraceActivityHelper.TryExtractActivity(message);
WebTD.JsonMessageEncodingStart(eventTraceActivity);
}
ThrowIfMismatchedMessageVersion(message);
message.Properties.Encoder = this;
JsonBufferedMessageWriter messageWriter = TakeBufferedWriter();
JavascriptCallbackResponseMessageProperty javascriptResponseMessageProperty;
if (message.Properties.TryGetValue <JavascriptCallbackResponseMessageProperty>(JavascriptCallbackResponseMessageProperty.Name, out javascriptResponseMessageProperty) &&
javascriptResponseMessageProperty != null)
{
if (this.crossDomainScriptAccessEnabled)
{
messageWriter.SetJavascriptCallbackProperty(javascriptResponseMessageProperty);
}
else
{
throw TraceUtility.ThrowHelperError(new InvalidOperationException(SR2.JavascriptCallbackNotEnabled), message);
}
}
ArraySegment <byte> messageData = messageWriter.WriteMessage(message, bufferManager, messageOffset, maxMessageSize);
ReturnMessageWriter(messageWriter);
if (SMTD.MessageWrittenByEncoderIsEnabled() && messageData != null)
{
SMTD.MessageWrittenByEncoder(
eventTraceActivity ?? EventTraceActivityHelper.TryExtractActivity(message),
messageData.Count,
this);
}
if (MessageLogger.LogMessagesAtTransportLevel)
{
XmlDictionaryReader xmlDictionaryReader = JsonReaderWriterFactory.CreateJsonReader(
messageData.Array, messageData.Offset, messageData.Count, null, XmlDictionaryReaderQuotas.Max, null);
MessageLogger.LogMessage(ref message, xmlDictionaryReader, MessageLoggingSource.TransportSend);
}
return(messageData);
}
void ReturnMessageWriter(JsonBufferedMessageWriter messageWriter)
{
bufferedWriterPool.Return(messageWriter);
}
