我正在尝试实现一项服务，该服务将允许用户从 Windows Phone 7 客户端（类似于 youtube）观看视频并将其上传到 WCF 服务。现在，我有了将视频文件 (.wmv) 发送到客户端的服务的基本实现，该客户端具有 Silverlight 框架的 MediaElement 实现（与同一类的 .NET 实现有一些差异）。现在，每当我尝试在客户端本地播放视频时，都会收到 SecurityException is unhandled 错误。当我尝试将服务调用封装在 try/catch 块中时，应用程序就挂在那里。这是代码：
服务器端：
class TransferService: ITransferService
{
public FileStream DownloadFile(string filename)
{
//string FilePath = Path.Combine(@"c:\Uploads", filename);
FileStream result = File.Open(@"C:\Uploads\test.wmv", FileMode.Open, FileAccess.Read, FileShare.Read);
return result;
}
public void UploadFile(FileStream request)
{
//Not yet implemented
}
}
服务器端（web.config）：
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
<httpRuntime maxRequestLength="100240" />
</system.web>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="basicHttp" allowCookies="true"
maxReceivedMessageSize="20000000"
maxBufferSize="20000000"
maxBufferPoolSize="20000000" transferMode="Buffered">
<readerQuotas maxDepth="200000000"
maxArrayLength="200000000"
maxStringContentLength="200000000"
maxBytesPerRead="200000000"
maxNameTableCharCount="200000000"/>
</binding>
</basicHttpBinding>
</bindings>
<services>
<service name="VideoService.TransferService" behaviorConfiguration="VideoServiceTypeBehaviors" >
<endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" />
<endpoint contract="VideoService.ITransferService" binding="basicHttpBinding" address="basic" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/"/>
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="VideoServiceTypeBehaviors" >
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>
客户端：
public partial class Page1 : PhoneApplicationPage
{
TransferServiceClient sc;
public Page1()
{
InitializeComponent();
sc = new TransferServiceClient();
this.Loaded += new RoutedEventHandler(Page_Loaded);
}
void Page_Loaded(object sender, RoutedEventArgs e)
{
sc.DownloadFileCompleted += new EventHandler<DownloadFileCompletedEventArgs>(sc_DownloadFileCompleted); //I think the problem is here
sc.DownloadFileAsync("test.wmv");
}
void sc_DownloadFileCompleted(object sender, DownloadFileCompletedEventArgs e)
{
myMediaElement.SetSource(e.Result);
myMediaElement.Play();
}
客户端（ServiceReference.clientconfig）：
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_ITransferService" closeTimeout="00:02:00"
openTimeout="00:02:00" receiveTimeout="00:10:00" sendTimeout="00:02:00"
maxBufferSize="210005536" maxReceivedMessageSize="210005536"
textEncoding="utf-8">
<security mode="None" />
</binding>
<binding name="BasicHttpBinding_ITransferService1" maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
<security mode="None" />
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:53163/TransferService.svc/basic"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ITransferService1"
contract="TransferService.ITransferService" name="BasicHttpBinding_ITransferService" />
</client>
</system.serviceModel>
</configuration>
任何帮助或见解将不胜感激。谢谢