WCF教學(8) - 使用Windows Service裝載服務

實作服務並不能讓服務執行，你需要能接聽特定port的請求，並將請求傳給服務。WCF中的HOST可以接聽多個port，並視需求使用不同通訊類型。Host負責建立Endpoint，接聽請求，把請求傳到服務的operation。
以下步驟介紹如何建立Windows Service類型的程式來當作WCF Host裝載服務，並利用NetNamedPipeBinding和用戶端溝通。

• File->New->Project，建立Windows Service專案，名稱 WindowsServiceHost
• File->Add->New Project 加入WCF Service Library類型專案，名稱MyWCFService ，使用預設的服務介面和程式碼來完成這個練習。
• WindowsServiceHost ，加入MyWCFService參考

• WindowsServiceHost ，加入System.ServiceModel.dll參考

• WindowsServiceHost ，Service1.cs，在OnStart方法啟動接聽，使用NetNamedPipeBinding

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.ServiceModel;
namespace WindowsServiceHost
{
    public partial class Service1 : ServiceBase
    {
        private ServiceHost myHost;        public Service1()
        {
            InitializeComponent();
        }
        protected override void OnStart(string[] args)
        {
            myHost = new ServiceHost(typeof(MyWCFService.Service1));
            myHost.AddServiceEndpoint(typeof(MyWCFService.IService1),
                new NetNamedPipeBinding(),
                "net.pipe://localhost/complex"
                );
            myHost.Open();        }
        protected override void OnStop()
        {
           myHost.Close();        }
    }
}

• WindowsServiceHost ，加入Installer

• WindowsServiceHost專案 ，ServiceInstaller1，StartType Property 設 Automatic

• WindowsServiceHost 專案，ServiceProcessInstaller1，Account property 設 LocalSystem

• WindowsServiceHost ，Build
• 在Visual Studio 2010 Command Prompt安裝服務 ，執行 installutil WindowsServiceHost.exe

• 在OS服務工具，Start the Service1

• 加一個Console Application當Client，名稱ConClient
• ConClient，Add Service Reference，產生proxy

• ConClient，Edit app.config

• ConClient，新增Client Endpoint

• ConClient，設定呼叫資訊

• ConClient，CTRL+S存檔，config檔看起來如下

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IService1" closeTimeout="00:01:00"
                    openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                    bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
                    maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                    messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
                    allowCookies="false">
                    <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                        maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                    <reliableSession ordered="true" inactivityTimeout="00:10:00"
                        enabled="false" />
                    <security mode="Message">
                        <transport clientCredentialType="Windows" proxyCredentialType="None"
                            realm="" />
                        <message clientCredentialType="Windows" negotiateServiceCredential="true"
                            algorithmSuite="Default" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://localhost:8732/Design_Time_Addresses/MyWCFService/Service1/"
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IService1"
                contract="ServiceReference1.IService1" name="WSHttpBinding_IService1">
                <identity>
                    <dns value="localhost" />
                </identity>
            </endpoint>
            <endpoint address="net.pipe://localhost/complex" binding="netNamedPipeBinding"
                bindingConfiguration="" contract="ServiceReference1.IService1"
                name="WinBinding" />        </client>
    </system.serviceModel>
</configuration>

• ConClient，修改Program.cs file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConClient
{
    class Program
    {
        static void Main(string[] args)
        {
            ServiceReference1.IService1 proxy =
                new ServiceReference1.Service1Client("WinBinding");
            Console.WriteLine(proxy.GetData(10));
            Console.ReadLine();
        }
    }
}

• 設ConClient為起始專案，因為裝載服務的WindowsServiceHost.exe已手動Run了

• CTRL+F5執行，若跳出任何視窗，按yes，ConClient會印出You entered: 10，代表成功叫用服務