基于TCP协议传输大文件

 不建议用WCF做文件传输
参考以下代码（VS2008下测试通过）
Service端：

C# code

   
   

    
    
    
    using
    
     System;

    
    using
    
     System.Collections.Generic;

    
    using
    
     System.Linq;

    
    using
    
     System.Text;

    
    using
    
     System.ServiceModel;

    
    using
    
     System.IO;

    
    using
    
     System.ServiceModel.Dispatcher;

    
    using
    
     System.ServiceModel.Description;

    
    using
    
     System.ServiceModel.Channels;

    
    namespace
    
     FSDownloadService
{
    [MessageContract]
    
    
    public
    
     
    
    class
    
     MyFileInfo
    {
        [MessageHeader]
        
    
    public
    
     
    
    string
    
     FileName;
        [MessageHeader]
        
    
    public
    
     
    
    long
    
     FileSize;
        [MessageBodyMember]
        
    
    public
    
     Stream Stream;
        
    
    public
    
     MyFileInfo() { }
        
    
    public
    
     MyFileInfo(Stream stream, 
    
    string
    
     fileName, 
    
    long
    
     fileSize)
        {
            
    
    this
    
    .Stream 
    
    =
    
     stream;
            
    
    this
    
    .FileSize 
    
    =
    
     fileSize;
            
    
    this
    
    .FileName 
    
    =
    
     fileName;
        }
    }

    [MessageContract]
    
    
    public
    
     
    
    class
    
     DownloadFileRequest
    {
        [MessageBodyMember]
        
    
    public
    
     
    
    readonly
    
     
    
    string
    
     FileName;
        
    
    public
    
     DownloadFileRequest() { }
        
    
    public
    
     DownloadFileRequest(
    
    string
    
     fileName)
        {
            
    
    this
    
    .FileName 
    
    =
    
     fileName;
        }
    }
    [ServiceContract]
    
    
    public
    
     
    
    interface
    
     IFileManager
    {
        [OperationContract]
        MyFileInfo DownloadFile(DownloadFileRequest request);       
    }
    [ServiceBehavior(IncludeExceptionDetailInFaults 
    
    =
    
     
    
    true
    
    )]
    
    
    public
    
     
    
    class
    
     MyService : IFileManager
    {
        
    
    public
    
     MyFileInfo DownloadFile(DownloadFileRequest request)
        {
            FileInfo fi 
    
    =
    
     
    
    new
    
     FileInfo(request.FileName);
            MyFileInfo result 
    
    =
    
     
    
    new
    
     MyFileInfo(File.OpenRead(request.FileName), request.FileName, fi.Length);
            
    
    return
    
     result;
        } 
    }

    
    
    public
    
     
    
    class
    
     MyHost
    {   
        
    
    static
    
     ServiceHost host 
    
    =
    
     
    
    null
    
    ;
        
    
    public
    
     
    
    static
    
     
    
    void
    
     Open()
        {
            
    
    string
    
     baseAddress 
    
    =
    
     
    
    "
    
    net.tcp://localhost:2008/FileService
    
    "
    
    ;
            host 
    
    =
    
     
    
    new
    
     ServiceHost(
    
    typeof
    
    (MyService), 
    
    new
    
     Uri(baseAddress));
            host.AddServiceEndpoint(
    
    typeof
    
    (IFileManager), GetTcpBinding(), 
    
    ""
    
    );
            host.Open();
        }
        
    
    public
    
     
    
    static
    
     
    
    void
    
     Close()
        {
            
    
    if
    
     (host 
    
    !=
    
     
    
    null
    
     
    
    &&
    
     host.State 
    
    ==
    
     CommunicationState.Opened)
            {
                host.Close();
            }
            host 
    
    =
    
     
    
    null
    
    ;
        }        
        
    
    public
    
     
    
    static
    
     Binding GetTcpBinding()
        {
            NetTcpBinding binding 
    
    =
    
     
    
    new
    
     NetTcpBinding();            
            binding.TransferMode 
    
    =
    
     TransferMode.Streamed;
            binding.MaxReceivedMessageSize 
    
    =
    
     
    
    int
    
    .MaxValue;
            
    
    return
    
     binding;
        }
    }
}

   
   

Host到Console

C# code

   
   

    
    
    
    using
    
     System;

    
    using
    
     System.Collections.Generic;

    
    using
    
     System.Linq;

    
    using
    
     System.Text;

    
    namespace
    
     FSDownloadService
{
    
    
    class
    
     Program
    {
        
    
    static
    
     
    
    void
    
     Main(
    
    string
    
    [] args)
        {
            System.Console.WriteLine(
    
    "
    
    Press <ENTER> to start the service.
    
    "
    
    );
            System.Console.ReadLine();
            MyHost.Open();
            System.Console.WriteLine(
    
    "
    
    The service is started.
    
    "
    
    );
            System.Console.WriteLine(
    
    "
    
    Press <ENTER> to stop the service.
    
    "
    
    );
            System.Console.ReadLine();
            MyHost.Close();
        }
    }
}
   
   

Client端代码如下

C# code

   
   

    
    
    
    using
    
     System;

    
    using
    
     System.Collections.Generic;

    
    using
    
     System.Linq;

    
    using
    
     System.Text;

    
    using
    
     System.ServiceModel;

    
    using
    
     System.IO;

    
    using
    
     System.ServiceModel.Dispatcher;

    
    using
    
     System.ServiceModel.Description;

    
    using
    
     System.ServiceModel.Channels;

    
    using
    
     FSDownloadService;

    
    namespace
    
     FSDownloadClient
{
    
    
    class
    
     Program
    {
        
    
    static
    
     
    
    void
    
     Main(
    
    string
    
    [] args)
        {
            System.Console.WriteLine(
    
    "
    
    Press <ENTER> to start the download.
    
    "
    
    );
            System.Console.ReadLine();
            
    
    string
    
     baseAddress 
    
    =
    
     
    
    "
    
    net.tcp://localhost:2008/FileService
    
    "
    
    ;
            ChannelFactory
    
    <
    
    IFileManager
    
    >
    
     factory 
    
    =
    
     
    
    new
    
     ChannelFactory
    
    <
    
    IFileManager
    
    >
    
    (MyHost.GetTcpBinding(), 
    
    new
    
     EndpointAddress(baseAddress));
            IFileManager manager 
    
    =
    
     factory.CreateChannel();
            
    
    string
    
     remoteFileName 
    
    =
    
     
    
    "
    
    11.rar
    
    "
    
    ;
            MyFileInfo fileInfo 
    
    =
    
     manager.DownloadFile(
    
    new
    
     DownloadFileRequest(remoteFileName));
            FileStream fs 
    
    =
    
     File.Create(
    
    "
    
    Client_
    
    "
    
     
    
    +
    
     fileInfo.FileName);
            
    
    int
    
     bytesRead 
    
    =
    
     
    
    0
    
    ;
            
    
    long
    
     totalBytesRead 
    
    =
    
     
    
    0
    
    ;
            
    
    byte
    
    [] buffer 
    
    =
    
     
    
    new
    
     
    
    byte
    
    [
    
    10000
    
    ];
            
    
    do
    
    
            {
                bytesRead 
    
    =
    
     fileInfo.Stream.Read(buffer, 
    
    0
    
    , buffer.Length);
                fs.Write(buffer, 
    
    0
    
    , bytesRead);
                totalBytesRead 
    
    +=
    
     bytesRead;
                
    
    double
    
     currentProgress 
    
    =
    
     ((
    
    double
    
    )totalBytesRead) 
    
    /
    
     fileInfo.FileSize;
                Console.WriteLine(
    
    "
    
    Read so far {0:.00}% of the file
    
    "
    
    , currentProgress 
    
    *
    
     
    
    100
    
    );
            } 
    
    while
    
     (bytesRead 
    
    >
    
     
    
    0
    
    );
            ((IClientChannel)manager).Close();
            factory.Close();
        }
    }
}
   
   

 
 

  
   备注：未经测试