WCF サービスを作成し、IIS にホストしました。クライアントマシンからサーバーにファイルをアップロードするために使用するこのWCFサービス。このサービスでは、複数の画像ファイルをサーバーにアップロードしますが、画像ファイルのサイズが MB (例: 6MB) の場合、「CommunicationException was Unhandled」というエラーが表示されます。
An error occurred while receiving the HTTP response to http://localhost:50904
/Transferservice.svc. This could be due to the service endpoint binding not using the HTTP
protocol. This could also be due to an HTTP request context being aborted by the server
(possibly due to the service shutting down). See server logs for more details.
スタックトレース
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at WindowsForms.TransferServiceReference1.ITransferService.UploadFile(RemoteFileInfo request)
at WindowsForms.TransferServiceReference1.TransferServiceClient.WindowsForms.TransferServiceReference1.ITransferService.UploadFile(RemoteFileInfo request) in F:\TransferServiceReference1\Reference.cs:line 206
at WindowsForms.Form1.btnUpload_Click(Object sender, EventArgs e) in F:\Project Under Amit Sir\WindowsForms\WindowsForms\Form1.cs:line 37
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at WindowsForms.Program.Main() in F:\Project Under Amit Sir\WindowsForms\WindowsForms\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
WCF サービス コード
ITransferService.cs
[ServiceContract]
public interface ITransferService
{
[OperationContract]
void UploadFile(RemoteFileInfo request);
}
[MessageContract]
public class RemoteFileInfo : IDisposable
{
[MessageHeader(MustUnderstand = true)]
public string FileName;
[MessageHeader(MustUnderstand = true)]
public long Length;
[MessageBodyMember(Order = 1)]
public System.IO.Stream FileByteStream;
public void Dispose()
{
if(FileByteStream != null)
{
FileByteStream.Close();
FileByteStream = null;
}
}
}
Service1.cs
public class Service1 : ITransferService
{
public void UploadFile(RemoteFileInfo request)
{
FileStream targetStream = null;
Stream sourceStream = request.FileByteStream;
string uploadFolder = @"D:\upload\FileName\";
string filePath = Path.Combine(uploadFolder, request.FileName);
using(targetStream = new FileStream(filePath, FileMode.Create,
FileAccess.Write, FileShare.None))
{
//read from the input stream in 65000 byte chunks
const int bufferLen = 65000;
byte[] buffer = new byte[bufferLen];
int count = 0;
while((count = sourceStream.Read(buffer, 0, bufferLen)) > 0)
{
// save to output stream
targetStream.Write(buffer, 0, count);
}
targetStream.Close();
sourceStream.Close();
}
}
}
Web.Config
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
<pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>
</system.web>
<system.serviceModel>
<!--<bindings>
<basicHttpBinding>
<binding name="TansferService.Service1Behavior" messageEncoding="Text" transferMode="Streamed" maxReceivedMessageSize="4294967294"
maxBufferSize="65536" maxBufferPoolSize="65536">
</binding>
</basicHttpBinding>
</bindings>-->
<services>
<service behaviorConfiguration="TansferService.Service1Behavior" name="TansferService.Service1">
<endpoint address="" binding="basicHttpBinding" contract="TansferService.ITransferService">
<identity>
<dns value="localhost"/>
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
<host>
<baseAddresses>
<add baseAddress="http://localhost/TransferService.svc"/>
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="TansferService.Service1Behavior">
<dataContractSerializer maxItemsInObjectGraph="2147483647" />
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
クライアント側のクライアント側コード は、単一のアップロード ボタンのみです。このアップロード ボタンは、WCF サービス コードを使用して複数のファイルをサーバーに転送します。
private void btnUpload_Click(object sender, EventArgs e)
{
DirectoryInfo dir = new DirectoryInfo(Application.StartupPath+@"\Upload Files");
TransferServiceClient obj = new TransferServiceClient();
ITransferService clientUpload = new TransferServiceClient();
RemoteFileInfo uploadRequestInfo = new RemoteFileInfo();
foreach (FileInfo fileInfo in dir.GetFiles())
{
string fileName = Path.Combine(fileInfo.DirectoryName , fileInfo.ToString());
using (FileStream stream = new System.IO.FileStream(fileName, FileMode.Open, FileAccess.Read))
{
uploadRequestInfo.FileName = fileInfo.ToString();
uploadRequestInfo.Length = fileInfo.Length;
uploadRequestInfo.FileByteStream = stream;
clientUpload.UploadFile(uploadRequestInfo);
}
}
}
App.Config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_ITransferService" 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="524288" maxReceivedMessageSize="4294967294"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
<binding name="BasicHttpBinding_ITransferService1" 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="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:50904/Transferservice.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ITransferService"
contract="TransferServiceReference.ITransferService" name="BasicHttpBinding_ITransferService" />
<endpoint address="http://localhost:50904/Transferservice.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ITransferService1"
contract="TransferServiceReference1.ITransferService" name="BasicHttpBinding_ITransferService1" />
</client>
</system.serviceModel>
</configuration>