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Ho un metodo di servizio WCF che restituisce un array di byte [] grande con dimensioni di circa 2 MB. Tuttavia, quando eseguo quel metodo dal WcfTestClient, ottengo la seguente eccezione.Wcf System.InsufficientMemoryException. Impossibile allocare un buffer di memoria gestita di 536870912 byte
System.InsufficientMemoryException
Failed to allocate a managed memory buffer of 536870912 bytes. The amount of available memory may be low.
Ho cercato su google, e le persone sembrano avere questo problema, ma sto lottando per trovare una soluzione e la vera causa del perché è cercando di creare un enorme tampone quali, in primo luogo?
Di seguito sono riportate le impostazioni di configurazione. Ho impostato il maxItemsInObjectGraph = "2147483647", altrimenti è stata generata un'eccezione. Il resto è semplice, credo.
Server
<system.serviceModel>
<services>
<service behaviorConfiguration="Wcf.ServiceBehavior"
name="Wcf.WcfService">
<endpoint address="" binding="wsHttpBinding" contract="Wcf.IWcfService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="Wcf.ServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
<dataContractSerializer maxItemsInObjectGraph="2147483647" />
</behavior>
</serviceBehaviors>
</behaviors>
<diagnostics>
<messageLogging maxMessagesToLog="30000"
logEntireMessage="true"
logMessagesAtServiceLevel="true"
logMalformedMessages="true"
logMessagesAtTransportLevel="true">
</messageLogging>
</diagnostics>
</system.serviceModel>
WcfTestClient Config questo è il file di configurazione di default che viene caricato con WcfTestClient
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IWcfService" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
algorithmSuite="Default" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:4151/Service1.svc" binding="wsHttpBinding"
bindingConfiguration="WSHttpBinding_IWcfService" contract="IWcfService"
name="WSHttpBinding_IWcfService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</client>
</system.serviceModel>
</configuration>
Ecco l'eccezione dello stack
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent">
<System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system">
<EventID>131075</EventID>
<Type>3</Type>
<SubType Name="Error">0</SubType>
<Level>2</Level>
<TimeCreated SystemTime="2010-06-29T09:18:23.9616589Z" />
<Source Name="System.ServiceModel" />
<Correlation ActivityID="{7870ff09-e268-4e9d-a692-389fd03db1aa}" />
<Execution ProcessName="WebDev.WebServer20" ProcessID="4812"
ThreadID="17" />
<Channel />
<Computer>PC-008915</Computer>
</System>
<ApplicationData>
<TraceData>
<DataItem>
<TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord"
Severity="Error">
<TraceIdentifier>
http://msdn.microsoft.com/en-GB/library/System.ServiceModel.Diagnostics.ThrowingException.aspx</TraceIdentifier>
<Description>Throwing an exception.</Description>
<AppDomain>5ab4f443-1-129222741421051645</AppDomain>
<Exception>
<ExceptionType>System.InsufficientMemoryException,
mscorlib, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>Failed to allocate a managed memory buffer of
536870912 bytes. The amount of available memory may be
low.</Message>
<StackTrace>at
System.ServiceModel.Diagnostics.Utility.AllocateByteArray(Int32
size) at
System.ServiceModel.Channels.BufferManager.GCBufferManager.TakeBuffer(Int32
bufferSize) at
System.ServiceModel.Channels.BufferedOutputStream.AllocNextChunk(Int32
minimumChunkSize) at
System.ServiceModel.Channels.BufferedOutputStream.WriteCore(Byte[]
buffer, Int32 offset, Int32 size) at
System.ServiceModel.Channels.BufferedOutputStream.Write(Byte[]
buffer, Int32 offset, Int32 size) at
System.Xml.XmlStreamNodeWriter.FlushBuffer() at
System.Xml.XmlStreamNodeWriter.GetBuffer(Int32 count,
Int32& offset) at
System.Xml.XmlStreamNodeWriter.UnsafeWriteUTF8Chars(Char*
chars, Int32 charCount) at
System.Xml.XmlStreamNodeWriter.WriteUTF8Chars(String
value) at
System.Xml.XmlUTF8NodeWriter.WriteEndElement(String
prefix, String localName) at
System.Xml.XmlSigningNodeWriter.WriteEndElement(String
prefix, String localName) at
System.Xml.XmlBaseWriter.WriteEndElement() at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteString(XmlWriterDelegator
xmlWriter, String value, XmlDictionaryString name,
XmlDictionaryString ns) at
WritePropertyDtoToXml(XmlWriterDelegator , Object ,
XmlObjectSerializerWriteContext , ClassDataContract)
at
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator
xmlWriter, Object obj, XmlObjectSerializerWriteContext
context) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
WriteArrayOfPropertyDtoToXml(XmlWriterDelegator ,
Object , XmlObjectSerializerWriteContext ,
CollectionDataContract) at
System.Runtime.Serialization.CollectionDataContract.WriteXmlValue(XmlWriterDelegator
xmlWriter, Object obj, XmlObjectSerializerWriteContext
context) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
WriteEntityTypeDtoToXml(XmlWriterDelegator , Object ,
XmlObjectSerializerWriteContext , ClassDataContract)
at
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator
xmlWriter, Object obj, XmlObjectSerializerWriteContext
context) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
WriteNodeTypeDtoToXml(XmlWriterDelegator , Object ,
XmlObjectSerializerWriteContext , ClassDataContract)
at
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator
xmlWriter, Object obj, XmlObjectSerializerWriteContext
context) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator
xmlWriter, Object obj, Boolean isDeclaredType, Boolean
writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle
declaredTypeHandle) at
WriteArrayOfNodeTypeDtoToXml(XmlWriterDelegator ,
Object , XmlObjectSerializerWriteContext ,
CollectionDataContract) at
System.Runtime.Serialization.CollectionDataContract.WriteXmlValue(XmlWriterDelegator
xmlWriter, Object obj, XmlObjectSerializerWriteContext
context) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract
dataContract, XmlWriterDelegator xmlWriter, Object obj,
RuntimeTypeHandle declaredTypeHandle) at
System.Runtime.Serialization.DataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator
writer, Object graph) at
System.Runtime.Serialization.DataContractSerializer.InternalWriteObject(XmlWriterDelegator
writer, Object graph) at
System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator
writer, Object graph) at
System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter
writer, Object graph) at
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameterPart(XmlDictionaryWriter
writer, PartInfo part, Object graph) at
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameter(XmlDictionaryWriter
writer, PartInfo part, Object graph) at
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeBody(XmlDictionaryWriter
writer, MessageVersion version, String action,
MessageDescription messageDescription, Object
returnValue, Object[] parameters, Boolean isRequest) at
System.ServiceModel.Dispatcher.OperationFormatter.SerializeBodyContents(XmlDictionaryWriter
writer, MessageVersion version, Object[] parameters,
Object returnValue, Boolean isRequest) at
System.ServiceModel.Dispatcher.OperationFormatter.OperationFormatterMessage.OperationFormatterBodyWriter.OnWriteBodyContents(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.BodyWriter.WriteBodyContents(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.BodyWriterMessage.OnWriteBodyContents(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.Message.WriteBodyContents(XmlDictionaryWriter
writer) at
System.ServiceModel.Security.SecurityAppliedMessage.WriteBodyToSignThenEncryptWithFragments(Stream
stream, Boolean includeComments, String[]
inclusivePrefixes, EncryptedData encryptedData,
SymmetricAlgorithm algorithm, XmlDictionaryWriter
writer) at
System.ServiceModel.Security.WSSecurityOneDotZeroSendSecurityHeader.ApplyBodySecurity(XmlDictionaryWriter
writer, IPrefixGenerator prefixGenerator) at
System.ServiceModel.Security.SecurityAppliedMessage.OnWriteMessage(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.Message.WriteMessage(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.BufferedMessageWriter.WriteMessage(Message
message, BufferManager bufferManager, Int32
initialOffset, Int32 maxSizeQuota) at
System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.WriteMessage(Message
message, Int32 maxMessageSize, BufferManager
bufferManager, Int32 messageOffset) at
System.ServiceModel.Channels.HttpOutput.SerializeBufferedMessage(Message
message) at
System.ServiceModel.Channels.HttpOutput.Send(TimeSpan
timeout) at
System.ServiceModel.Channels.HttpRequestContext.OnReply(Message
message, TimeSpan timeout) at
System.ServiceModel.Activation.HostedHttpContext.OnReply(Message
message, TimeSpan timeout) at
System.ServiceModel.Channels.RequestContextBase.Reply(Message
message, TimeSpan timeout) at
System.ServiceModel.Security.SecuritySessionServerSettings.SecuritySessionRequestContext.OnReply(Message
message, TimeSpan timeout) at
System.ServiceModel.Channels.RequestContextBase.Reply(Message
message, TimeSpan timeout) at
System.ServiceModel.Channels.RequestContextBase.Reply(Message
message) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.Reply(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessageCleanup(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc&
rpc) at
System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean
isOperationContextSet) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.Dispatch(MessageRpc&
rpc, Boolean isOperationContextSet) at
System.ServiceModel.Dispatcher.ChannelHandler.DispatchAndReleasePump(RequestContext
request, Boolean cleanThread, OperationContext
currentOperationContext) at
System.ServiceModel.Dispatcher.ChannelHandler.HandleRequest(RequestContext
request, OperationContext currentOperationContext) at
System.ServiceModel.Dispatcher.ChannelHandler.AsyncMessagePump(IAsyncResult
result) at
System.ServiceModel.Dispatcher.ChannelHandler.OnContinueAsyncReceive(Object
state) at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.Invoke2()
at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.OnSecurityContextCallback(Object
o) at
System.Security.SecurityContext.Run(SecurityContext
securityContext, ContextCallback callback, Object
state) at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.Invoke()
at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.ProcessCallbacks()
at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.CompletionCallback(Object
state) at
System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.ScheduledOverlapped.IOCallback(UInt32
errorCode, UInt32 numBytes, NativeOverlapped*
nativeOverlapped) at
System.ServiceModel.Diagnostics.Utility.IOCompletionThunk.UnhandledExceptionFrame(UInt32
error, UInt32 bytesRead, NativeOverlapped*
nativeOverlapped) at
System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32
errorCode, UInt32 numBytes, NativeOverlapped*
pOVERLAP)</StackTrace>
<ExceptionString>System.InsufficientMemoryException:
Failed to allocate a managed memory buffer of 536870912
bytes. The amount of available memory may be low.
---> System.OutOfMemoryException: Exception of type
'System.OutOfMemoryException' was thrown. at
System.ServiceModel.Diagnostics.Utility.AllocateByteArray(Int32
size) --- End of inner exception stack trace
---</ExceptionString>
<InnerException>
<ExceptionType>System.OutOfMemoryException, mscorlib,
Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>Exception of type
'System.OutOfMemoryException' was thrown.</Message>
<StackTrace>at
System.ServiceModel.Diagnostics.Utility.AllocateByteArray(Int32
size)</StackTrace>
<ExceptionString>System.OutOfMemoryException:
Exception of type 'System.OutOfMemoryException' was
thrown. at
System.ServiceModel.Diagnostics.Utility.AllocateByteArray(Int32
size)</ExceptionString>
</InnerException>
</Exception>
</TraceRecord>
</DataItem>
</TraceData>
</ApplicationData>
</E2ETraceEvent>
In attesa di Nabeel
Ho a che fare con lo stesso errore. Potresti pubblicare il tuo stacktrace in modo che possa vedere se ci sono delle somiglianze tra i nostri casi? http://stackoverflow.com/questions/3016446/how-to-best-transfer-large-payloads-of-data-using-wshttp-with-wcf-with-message-se – jpierson
possibile duplicato di [Impossibile allocare un buffer di memoria gestita di 134217728 byte. La quantità di memoria disponibile può essere bassa] (http: // stackoverflow.it/questions/20209641/failed-to-allocate-a-managed-memoria-buffer-di-134217728-byte-l'-importo-di-ava) – Liam