Question

我有一个客户端 - 服务器WCF上传器/下载器。

以无限循环下载/上传文件（获取文件列表并上传/下载文件，直到有人停止）。

客户端的创建方式如下：

ChannelFactory<IContract> scf = new ChannelFactory<IContract>(
    this._endPoint.Binding, this._endPoint.AddressFull);

this.Channel = scf.CreateChannel();
this.channelFactory = scf;

并且它的绑定是TCP客户端/服务器，并且是这样创建的：

public static CustomBinding GetCustomTcpBinding(TransferMode mode, long MaxBufferBufferPoolSize,  long MaxReceivedMessageSize, int MaxBufferSize, TimeoutHelper Timeouts, StreamerType st)
{
    MtomMessageEncodingBindingElement binaryEncoding = new MtomMessageEncodingBindingElement();

    System.Xml.XmlDictionaryReaderQuotas rq = binaryEncoding.ReaderQuotas;

    SetReaderQuotas(ref rq, int.MaxValue, int.MaxValue, int.MaxValue,  int.MaxValue, int.MaxValue);

    TcpTransportBindingElement tcpTransport = new TcpTransportBindingElement();

    tcpTransport.MaxReceivedMessageSize = 2147483647;// MaxReceivedMessageSize;
    tcpTransport.MaxBufferSize = 2147483647;// MaxBufferSize;
    tcpTransport.MaxBufferPoolSize = 2147483647;// MaxBufferBufferPoolSize;
    tcpTransport.TransferMode = mode;

    switch(st)
    {
        case StreamerType.Client:
        {
            //tcpTransport.ConnectionBufferSize = Consts.TCP_CLIENT_CONNECTION_BUFFER_SIZE;
            break;
        }
        case StreamerType.Server:
        {
            tcpTransport.ConnectionBufferSize = Consts.TCP_SERVER_CONNECTION_BUFFER_SIZE;
            tcpTransport.MaxOutputDelay = TimeSpan.FromSeconds(30);
            break;
        }
    }        

    BindingElementCollection elements = new BindingElementCollection();

    elements.Add(binaryEncoding);
    elements.Add(tcpTransport);

    CustomBinding binding = new CustomBinding(elements)
    {
        Name = "TcpUserNameBinding"
    };

    binding.SetTimeouts(Timeouts);

    //binding.SetDefaultQuotas();

    return binding;
}

和

 long MaxBufferBufferPoolSize = 65536 * 4;
 long MaxReceivedMessageSize = 2147483647;
 int MaxBufferSize = 65536;

服务器是：

 long MaxBufferBufferPoolSize = 65536 * 4;
 long MaxReceivedMessageSize = 2147483647;
 int MaxBufferSize = 65536;

下载/上传以块的形式流式传输，如果超过每个块大小，则在每次读取检查时流式传输，并允许获取更多或结束。

每个块大约2MB，然后进行下一次调用。

客户端的来电方式如下：

public void Call(Action<IContract> action)
{
    var channel = this.Channel;

    if (channel == null)
    {
        return;
    }

    action(channel);
    return;           
}

问题是有些调用速度较慢，有些调用较快，而我无法预测导致问题的原因。

要下载我使用：

using (fs = new Streamer.Common.StreamWithProgress(fsTemp = new   FileStream(System.IO.Path.Combine(folder, fileName), System.IO.FileMode.OpenOrCreate)))
{
    fs.Position = position;

    var res = ClientConn.SafeCall(a => a.UploadFile(new Streamer.Common.RemoteFileInfo() { FileName = fileName, Length = length, Position = position, FileByteStream = fs }), true, position == 0);

    position = res.Position;
    hasNextChunk = res.HasNextChunk;
}

在块方法调用中的WCF .net流减慢速度

0 个答案: