在net.tcp模式下,由SvcUtil.exe生成代理类文件和配置文件

WCF服务调用可以采用两个方法，由工具SvcUtil.exe生成本地代理服务类和配置文件方式，或者采用ChannelFactory直接创建服务代理对象。本文主要采用前面一种方式来进行。

SvcUtil.exe位于：C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin目录下，可以将本工具添加到VS2010的工具菜单中，以方便使用：

VS菜单-》工具-》外部工具-》添加-》在“命令”文本框选取其路径如下：C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin\SvcUtil.exe，在初始目录（这里是配置文件和代理类生成后放置的地方），我们选取“$(SolutionDir)”。

添加完成后，工具下拉菜单会出现SvcUtil，如何使用呢？

首先，对于Http类型的Uri来说，很容易搞定，直接在SvcUtil的输入框输入类似：http://localhost:22222/calService/metadata即可生成服务器端在客户端的代理类和配置文件，然后将这两个文件拷到项目中并将output.config改名为app.config就可以了。

如果遇到net.tcp（比如：net.tcp://localhost:22222/chatservice）该怎么进行呢？

其实很简单，我们只需要在服务入口处添加Service的EndPoint即可。

 Uri uri = new Uri(ConfigurationManager.AppSettings["addr"]);            using(ServiceHost host = new ServiceHost(typeof(NikeSoftChat.ChatService),uri))            {                ServiceMetadataBehavior smb = host.Description.Behaviors.Find<ServiceMetadataBehavior>();                if (smb == null)                {                    host.Description.Behaviors.Add(new ServiceMetadataBehavior());                }                host.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexTcpBinding(), "mex");                host.Open();                Console.WriteLine("Chat service listen on endpoint {0}", uri.ToString());                Console.WriteLine("Press ENTER to stop chat service...");                Console.ReadLine();                host.Abort();                host.Close();            }

注意，黄色标记很重要，它能够暴露出元数据出来，如果没有黄色标记部分，利用SvcUtil生成net.tcp的代理类和配置文件将是不可能的。

然后，将net.tcp://localhost:22222/chatservice输入SvcUtil.exe的输入框，然后点击生成，显示信息如下：

Microsoft (R) Service Model Metadata Tool[Microsoft (R) Windows (R) Communication Foundation，版本 3.0.4506.2152]版权所有(c) Microsoft Corporation。保留所有权利。正在尝试使用 WS-Metadata Exchange 从“net.tcp://localhost:22222/chatservice”下载元数据。此 URL 不支持 DISCO。正在生成文件...E:\WCF\WCF_ChatRoom\ChatService.csE:\WCF\WCF_ChatRoom\output.config请按任意键继续. . .

然后生成的文件为：ChatService.cs和output.config，内容如下：

ChatService.cs

//------------------------------------------------------------------------------// <auto-generated>//     此代码由工具生成。//     运行时版本:2.0.50727.5456////     对此文件的更改可能会导致不正确的行为，并且如果//     重新生成代码，这些更改将会丢失。// </auto-generated>//------------------------------------------------------------------------------[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")][System.ServiceModel.ServiceContractAttribute(ConfigurationName="IChat", CallbackContract=typeof(IChatCallback), SessionMode=System.ServiceModel.SessionMode.Required)]public interface IChat{        [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/IChat/Join", ReplyAction="http://tempuri.org/IChat/JoinResponse")]    string[] Join(string name);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, IsInitiating=false, Action="http://tempuri.org/IChat/Say")]    void Say(string msg);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, IsInitiating=false, Action="http://tempuri.org/IChat/Whisper")]    void Whisper(string to, string msg);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, IsTerminating=true, IsInitiating=false, Action="http://tempuri.org/IChat/Leave")]    void Leave();}[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]public interface IChatCallback{        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, Action="http://tempuri.org/IChat/Receive")]    void Receive(string senderName, string message);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, Action="http://tempuri.org/IChat/ReceiveWhisper")]    void ReceiveWhisper(string senderName, string message);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, Action="http://tempuri.org/IChat/UserEnter")]    void UserEnter(string name);        [System.ServiceModel.OperationContractAttribute(IsOneWay=true, Action="http://tempuri.org/IChat/UserLeave")]    void UserLeave(string name);}[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]public interface IChatChannel : IChat, System.ServiceModel.IClientChannel{}[System.Diagnostics.DebuggerStepThroughAttribute()][System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]public partial class ChatClient : System.ServiceModel.DuplexClientBase<IChat>, IChat{        public ChatClient(System.ServiceModel.InstanceContext callbackInstance) :             base(callbackInstance)    {    }        public ChatClient(System.ServiceModel.InstanceContext callbackInstance, string endpointConfigurationName) :             base(callbackInstance, endpointConfigurationName)    {    }        public ChatClient(System.ServiceModel.InstanceContext callbackInstance, string endpointConfigurationName, string remoteAddress) :             base(callbackInstance, endpointConfigurationName, remoteAddress)    {    }        public ChatClient(System.ServiceModel.InstanceContext callbackInstance, string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :             base(callbackInstance, endpointConfigurationName, remoteAddress)    {    }        public ChatClient(System.ServiceModel.InstanceContext callbackInstance, System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :             base(callbackInstance, binding, remoteAddress)    {    }        public string[] Join(string name)    {        return base.Channel.Join(name);    }        public void Say(string msg)    {        base.Channel.Say(msg);    }        public void Whisper(string to, string msg)    {        base.Channel.Whisper(to, msg);    }        public void Leave()    {        base.Channel.Leave();    }}

output.config:

<?xml version="1.0" encoding="utf-8"?><configuration>    <system.serviceModel>        <bindings>            <netTcpBinding>                <binding name="NetTcpBinding_IChat" closeTimeout="00:01:00" openTimeout="00:01:00"                    receiveTimeout="00:10:00" sendTimeout="00:01:00" transactionFlow="false"                    transferMode="Buffered" transactionProtocol="OleTransactions"                    hostNameComparisonMode="StrongWildcard" listenBacklog="10"                    maxBufferPoolSize="524288" maxBufferSize="65536" maxConnections="10"                    maxReceivedMessageSize="65536">                    <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"                        maxBytesPerRead="4096" maxNameTableCharCount="16384" />                    <reliableSession ordered="true" inactivityTimeout="00:10:00"                        enabled="true" />                    <security mode="None">                        <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />                        <message clientCredentialType="Windows" />                    </security>                </binding>            </netTcpBinding>        </bindings>        <client>            <endpoint address="net.tcp://localhost:22222/chatservice" binding="netTcpBinding"                bindingConfiguration="NetTcpBinding_IChat" contract="IChat"                name="NetTcpBinding_IChat" />        </client>    </system.serviceModel></configuration>

然后将ChatService.cs放入客户端的工程文件中，output.config改名为App.config,放到服务器端的工程文件中即可。