Hosting the WCF service

1. Hosting the service in a managed application

We can create a .NET managed application and host a WCF service inside the
application. The hosting application can be a command-line application, a Windows
Forms application, or a web application. This hosting method gives you full control
over the lifetime of the WCF service. It is very easy to debug and deploy, and
supports all bindings and transports. The drawback of this hosting method is that
you have to start the hosting application manually and it has only limited support
for high availability, easy manageability, robustness, recoverability, versioning, and
deployment scenarios.

 2. Using Console as the Host App

the code for app.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IHelloWorldService" 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" establishSecurityContext="true" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <!--<endpoint address="http://localhost:8080/HostDevServer/HelloWorldService.svc"-->
            <endpoint address="http://localhost:8080/HostCmdLineApp/HelloWorldService/" 
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IHelloWorldService"
                contract="IHelloWorldService" name="WSHttpBinding_IHelloWorldService">
                <identity>
                    <userPrincipalName value="IT14\Administrator" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>
</configuration>

Your console service host code:

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

namespace HostCmdLineApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Type serviceType = typeof(HelloWCF.Service.HelloWorldService);

            string httpBaseAddress = ConfigurationManager.AppSettings["HTTPBaseAddress"];
            Uri[] baseAddress = new Uri[] { new Uri(httpBaseAddress) };

            ServiceHost host = new ServiceHost(serviceType, baseAddress);
            host.Open();
            Console.WriteLine("HelloWorldService is now running. ");
            Console.WriteLine("Press any key to stop it ...");
            Console.ReadKey();
            host.Close();
        }
    }
}

Need to modify the app.config in your client app:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IHelloWorldService" 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" establishSecurityContext="true" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <!--<endpoint address="http://localhost:8080/HostDevServer/HelloWorldService.svc"-->
            <endpoint address="http://localhost:8080/HostCmdLineApp/HelloWorldService/" 
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IHelloWorldService"
                contract="IHelloWorldService" name="WSHttpBinding_IHelloWorldService">
                <identity>
                    <userPrincipalName value="IT14\Administrator" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>
</configuration>

As you can see, I modified the address of the endpoint to the new address we have just declared in the app.config of the host

 http://localhost:8080/HostCmdLineApp/HelloWorldService/

Now run the host(Ctrl + F5), and then run the client(Ctrl + F5)

Result:

How are you doing David Gu!

BTW, you can also host the service in a windows service

The steps to create such a hosting application are very similar to what we did to
host a WCF service in a command-line application, except that you have to create an
installer to install the Windows service in the Service Control Manager (or you can
use the .NET Framework Installutil.exe utility)