C# WCF未发送流（net.tcp绑定）

我无法使用net.tcp绑定发送流。我有MessageContract来发送数据，WCF正在传递文件名，但流FileByTestStream是空的

[MessageContract]
public class FileUploadMessage
{
    [MessageHeader(MustUnderstand = true)]
    public string Filename;
    [MessageBodyMember(Order = 1)]
    public Stream FileByteStream;
}

我的服务：

[ServiceContract]
public interface ISlaveService
{
    [OperationContract]
    FileUploadMessage SendPattern(FileUploadMessage image);
}

服务实现（发送和返回流都不工作）：

启动服务：

public static void StartService()
{
    try
    {
        Uri tcpUrl = new Uri("net.tcp://localhost:" + Config.Instance().LocalPort + "/SlaveService");

        host = new ServiceHost(typeof(SlaveService), tcpUrl);

        NetTcpBinding tcpbinding = new NetTcpBinding();
        tcpbinding.Security.Mode = SecurityMode.None;
        tcpbinding.TransferMode = TransferMode.Streamed;
        tcpbinding.MaxReceivedMessageSize = 2147483647;
        tcpbinding.ReaderQuotas.MaxArrayLength = 2147483647;
        tcpbinding.ReaderQuotas.MaxBytesPerRead = 2147483647;
        tcpbinding.ReaderQuotas.MaxStringContentLength = 2147483647;
        tcpbinding.ReaderQuotas.MaxDepth = 2147483647;
        host.AddServiceEndpoint(typeof(ISlaveService), tcpbinding, "net.tcp://localhost:" + Config.Instance().LocalPort + "/SlaveService");

        ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
        smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15;
        host.Description.Behaviors.Add(smb);

        host.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexTcpBinding(),
        "net.tcp://localhost:" + Config.Instance().LocalPort + "/SlaveService/mex");

        host.Open();
    }
    catch (Exception ex)
    {
        //TO DO: Logger.Add("Failed to start Slave service. " + ex.Message);
    }
}

客户端连接：

public bool Connect(string address)
{
    NetTcpBinding tcpbinding = new NetTcpBinding();
    tcpbinding.Security.Mode = SecurityMode.None;
    tcpbinding.TransferMode = TransferMode.Streamed;
    tcpbinding.MaxReceivedMessageSize = 2147483647;
    tcpbinding.ReaderQuotas.MaxArrayLength = 2147483647;
    tcpbinding.ReaderQuotas.MaxBytesPerRead = 2147483647;
    tcpbinding.ReaderQuotas.MaxStringContentLength = 2147483647;
    tcpbinding.ReaderQuotas.MaxDepth = 2147483647;

    EndpointAddress endpoint = new EndpointAddress("net.tcp://" + address + "/SlaveService");
    var channelFactory = new ChannelFactory<ISlaveService>(tcpbinding, endpoint);
    client = null;

    try
    {
        client = channelFactory.CreateChannel();
    }
    catch (Exception e)
    {
        Logger.Add("Exception occured while trying to connect. " + e.Message);
        if (client != null)
        {
            ((ICommunicationObject)client).Abort();
        }

        return false;
    }

    return true;
}

public bool Connect（字符串地址）
{
NetTcpBinding=新的NetTcpBinding（）；
tcpbinding.Security.Mode=SecurityMode.None；
tcpbinding.TransferMode=传输模式。流式传输；
tcpbinding.MaxReceivedMessageSize=2147483647；
tcpbinding.ReaderQuotas.MaxArrayLength=2147483647；
tcpbinding.ReaderQuotas.MaxBytesPerRead=2147483647；
tcpbinding.ReaderQuotas.MaxStringContentLength=2147483647；
tcpbinding.ReaderQuotas.MaxDepth=2147483647；
EndpointAddress endpoint=新的EndpointAddress（“net.tcp://“+address+”/SlaveService”）；
var channelFactory=新的channelFactory（tcpbinding，端点）；
client=null；
尝试
{
client=channelFactory.CreateChannel（）；
}
捕获（例外e）
{
添加（“尝试连接时发生异常。”+e.Message）；
如果（客户端！=null）
{
（（ICommunicationObject）client.Abort（）；
}
返回false；
}
返回true；
}

我可以发送文本和数字，但当我试图发送流时，它发送的是一个空流。我在论坛上说MaxReceivedMessageSize应该是一个解决方案，但它并不能解决我的问题。

---

请帮助

合同应为：

    [OperationContract]
    FileUploadMessage SendPattern(Stream image);

---

我尝试了这个，在使用流之后添加了FileUploadMessage。当我将文件作为字节数组而不是流发送时，这段代码可以正常工作。我不知道为什么

    [OperationContract]
    FileUploadMessage SendPattern(Stream image);