Question

I would like to know, if there is any possibility to return anything, when I send data though WCF using streaming? I use netTcpBinding, client and server are in the same local network.

Here is my code:

[ServiceContract()]
public interface IFileTransferService
{
    [OperationContract(IsOneWay = true)]
    //[FaultContract(typeof(MyFaultException))] // I can't do that
    void Upload(FileTransferRequest request);
}

[MessageContract()]
public class FileTransferRequest
{
    [MessageHeader(MustUnderstand = true)]
    public string FileName;

    [MessageBodyMember(Order = 1)]
    public System.IO.Stream Data;

}

[DataContract]
public class MyFaultException
{
    private string _reason;
    [DataMember]
    public string Reason
    {
        get { return _reason; }
        set { _reason = value; }
    }
}

So, when using Message Contract, the transaction must be one way, I can’t return any value, I can’t throw exception. How Can I inform client, that operation was successful or not? And send him an error messages for example?

Answer 1

So, when using Message Contract, the transaction must be one way, I
can’t return any value, I can’t throw exception.

Where did you find such information? You can of course return a value – you can either return void or another message contract. Also what you mean by “transaction”?