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.cs
E:\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。