using System.IO;

 using System.ServiceModel;

 namespace Wcf_Stream_Service

 {

     // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IMediaService”。

     [ServiceContract]

     public interface IMediaService

     {

         [OperationContract]

         string[] GetMediaList();

         [OperationContract]

         Stream GetMedia(string mediaName);

     }

 }

 using System;

 using System.IO;

 namespace Wcf_Stream_Service

 {

     // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的类名“MediaService”。

     public class MediaService : IMediaService

     {

         public Stream GetMedia(string mediaName)

         {

             string filePath = @"F:\Projects\Learn4Soft\Wcf_Stream_Service\bin\Debug\" + mediaName + ".txt";

             if (!File.Exists(filePath))

             {

                 throw new Exception("不存在文件");

             }

             Stream s = null;

             try

             {

                 s = new FileStream(filePath, FileMode.Open, FileAccess.Read);

             }

             catch (Exception)

             {

                 //如果发生异常了 我们就将流关闭释放

                 s.Close();

             }

             return s;

         }

         public string[] GetMediaList()

         {

             string[] mediaList = new string[];

             mediaList[] = "lemon tree";

             mediaList[] = "yesterday";

             mediaList[] = "500 miles";

             return mediaList;

         }

     }

 }

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

    <startup>

        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />

    </startup>

    <system.serviceModel>

        <behaviors>

            <serviceBehaviors>

                <behavior name="">

                    <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />

                    <serviceDebug includeExceptionDetailInFaults="true" />

                </behavior>

            </serviceBehaviors>

        </behaviors>

      <!--bindings节点为自己新增的，旨在添加两个Streamed的传输，另外设置了最长信息接收量 最后为binding定义了一个名字-->

      <bindings>

        <basicHttpBinding>

          <binding name="newBasicHttpBinding" transferMode="Streamed" maxReceivedMessageSize="200000" />

        </basicHttpBinding>

        <netTcpBinding>

          <binding name="newNetTcpBinding" transferMode="Streamed" maxReceivedMessageSize="200000">

            <!--设置无安全-->

            <security mode ="None" />

          </binding>

        </netTcpBinding>

      </bindings>

        <services>

            <service name="Wcf_Stream_Service.MediaService">

              <!--端点取了名字 以及制定了bindingConfiguration-->

                <endpoint address=""

                          binding="basicHttpBinding"

                          bindingConfiguration="newBasicHttpBinding"

                          name="basicHttpBinding_IMetadataExchange"

                          contract="Wcf_Stream_Service.IMediaService">

                    <identity>

                        <dns value="localhost" />

                    </identity>

                </endpoint>

              <endpoint address=""

                        binding="netTcpBinding"

                        bindingConfiguration="newNetTcpBinding"

                        name="NetTcpBinding_IMetadataExchange"

                        contract="Wcf_Stream_Service.IMediaService" />

                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />

                <host>

                    <baseAddresses>

                        <add baseAddress="http://localhost:8733/MediaService" />

                      <!--为tcp协议定义一个地址-->

                        <add baseAddress="net.tcp://localhost:8734/tcp" />

                    </baseAddresses>

                </host>

            </service>

        </services>

    </system.serviceModel>

</configuration>

 using System;

 using System.ServiceModel;

 namespace Wcf_Stream_Service

 {

     class Program

     {

         static void Main(string[] args)

         {

             ServiceHost host = new ServiceHost(typeof(MediaService));

             host.Open();

             Console.WriteLine("服务已经启动");

             Console.ReadKey();

         }

     }

 }

 using System;

 using System.IO;

 namespace Wcf_Stream_Client

 {

     class Program

     {

         static void Main(string[] args)

         {

             ServiceReference_Stream.MediaServiceClient client = new ServiceReference_Stream.MediaServiceClient("NetTcpBinding_IMetadataExchange");

             string mediaName=client.GetMediaList()[];

             Console.WriteLine(mediaName);

             Stream s = client.GetMedia(mediaName);

             //var num = s.Length;

             byte[] bytes = new byte[];

             s.Read(bytes, , bytes.Length);

             //s.Seek(0, SeekOrigin.Begin);

             FileStream fs = new FileStream("new_" + mediaName + ".txt", FileMode.Create);

             BinaryWriter writer = new BinaryWriter(fs);

             writer.Write(bytes);

             writer.Close();

             fs.Close();

             Console.ReadKey();

         }

     }

 }