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POWCF Service hosted on IIS website with TransferMode = Streamed throws w3wp.exe OutOfMemory exception?
 

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  1. POWCF Service hosted on IIS website with TransferMode = Streamed throws w3wp.exe OutOfMemory exception?
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    <p>I have build a WCF service to upload and download files.</p> <p>Service: Hosted on IIS asp.net website:</p> <pre><code>[ServiceContract] public interface IFileTransferService { [OperationContract(IsOneWay = true)] void Upload(FileTransferRequest request); } [MessageContract()] public class FileTransferRequest { [MessageHeader(MustUnderstand = true)] public string FileName; [MessageBodyMember(Order = 1)] public System.IO.Stream Data; } [AspNetCompatibilityRequirements(RequirementsMode= AspNetCompatibilityRequirementsMode.Required)] public class FileTransferService : IFileTransferService { public FileTransferService() { HttpContext httpContext = HttpContext.Current; if (httpContext != null) { httpContext.Response.BufferOutput = false; } } public void Upload(FileTransferRequest request) { string fileName = System.Guid.NewGuid().ToString() + request.FileName; if (ConfigurationManager.AppSettings["UploadPath"] == null) { throw new ApplicationException("Missing upload path"); } string uploadPath = "/OutputFeeds"; string filePath = Path.Combine(Path.GetFullPath(HttpContext.Current.Server.MapPath(uploadPath)), fileName); FileStream fs = null; try { fs = File.Create(filePath); byte[] buffer = new byte[1024]; int read = 0; while ((read = request.Data.Read(buffer, 0, buffer.Length)) != 0) { fs.Write(buffer, 0, read); } } finally { if (fs != null) { fs.Close(); fs.Dispose(); } if (request.Data != null) { request.Data.Close(); request.Data.Dispose(); } } } } </code></pre> <p>Server config:</p> <pre><code>&lt;system.serviceModel&gt; &lt;serviceHostingEnvironment aspNetCompatibilityEnabled="true"&gt; &lt;/serviceHostingEnvironment&gt; &lt;bindings&gt; &lt;basicHttpBinding&gt; &lt;binding name="HttpBinding_MTOM" messageEncoding="Mtom" transferMode="Streamed" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647"&gt; &lt;security mode="None"&gt; &lt;transport clientCredentialType="None" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/bindings&gt; &lt;services&gt; &lt;service behaviorConfiguration="FileTransferServiceBehavior" name="FileTransferService"&gt; &lt;endpoint address="" binding="basicHttpBinding" bindingConfiguration="HttpBinding_MTOM" contract="IFileTransferService"&gt; &lt;identity&gt; &lt;dns value="localhost" /&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="FileTransferServiceBehavior"&gt; &lt;serviceMetadata httpGetEnabled="true" /&gt; &lt;serviceDebug includeExceptionDetailInFaults="false" /&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; </code></pre> <p>Client: Calling the above service from console application:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;basicHttpBinding&gt; &lt;binding name="BasicHttpBinding_IFileTransferService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Mtom" textEncoding="utf-8" transferMode="Streamed" useDefaultWebProxy="true"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /&gt; &lt;security mode="None"&gt; &lt;transport clientCredentialType="None" proxyCredentialType="None" realm=""&gt; &lt;extendedProtectionPolicy policyEnforcement="Never" /&gt; &lt;/transport&gt; &lt;message clientCredentialType="UserName" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/basicHttpBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint address="http://ht/FileTransferService.svc" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IFileTransferService" contract="HobbyTown.IFileTransferService" name="BasicHttpBinding_IFileTransferService" /&gt; &lt;/client&gt; &lt;/system.serviceModel&gt; &lt;/configuration&gt; </code></pre> <p>Client Upload Code:</p> <pre><code> string inputFile = @"C:\Client\InputFeeds\FullInventory.zip"; using (FileStream fs = new FileStream(inputFile, FileMode.Open)) { FileTransferServiceClient proxy = new FileTransferServiceClient(); proxy.Upload("Inventory.Zip", fs); //proxy.Upload(trIn); } </code></pre> <p>Note: If I change transfer mode to buffered in the client it works and however if Make the transfer mode on the client to Streamed it doesn't and throws outofmemory error.</p> <p>Another <a href="http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/d36bf53e-dcb1-4df4-b26a-f692e85e6637" rel="nofollow">post for same problem</a> </p>
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    1. USLadislav Mrnka
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    1. COWhat happens if you don't use `using` for the file stream on the client?
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      1. USLadislav Mrnka
 

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