如何在运行时添加WCF服务

Question

How can i add wcf service at runtime in my winform UI. I created a wcf service which return running processes of hosted machine. I want to add the hosted machine service in my winform application.

Answer 1

You need to change endpoints dynamically at runtime, so You need WCF Discovery .

Structure :

WCF Consumer(s) <---> WCF Discovery Service <---> WCF Service(s)

Implementation :

1. How to: Implement a Discovery Proxy
2. How to: Implement a Discoverable Service that Registers with the Discovery Proxy
3. How to: Implement a Client Application that Uses the Discovery Proxy to Find a Service

Topology :

• Start Discovery Service [ Structure BackBone ]
• Start Service(s) [ Every Service will ANNOUNCE its startup to the Discovery Service ]
• Start Client(s) [ Every Client will DISCOVER ( FIND & RESOLVE ) Services' endpoints from the Discovery Service ]

Notes :

• Discovery process uses UDP ( Check your Firewall, It can block connections )
• Services MUST announce their startup, thus Self-Hosted services is OK, but IIS-Hosted 5/6 ones is NOT because they started automatically when 1st invoke happends !

Solving IIS-Hosted 5/6 Issue :

• By Extending Hosting Using ServiceHostFactory

So that you can start your IIS-Hosted 5/6 services manually without being invoked for the first time

---

You can also use WCF Routing Service .

BROTHER TIP :
Don't go far for a Serverless ( No-BackBone, No-BootleNeck, Fully-Distributed, .. etc ) ideal topology, this'll blowup your head and got you crazy :D

For a beginner, I suggest you this tutorial [ WCF Tutorials ]

Answer 2

not sure what you are trying to do here. But you need to know two things to call the WCF service 1) Service Contract 2) End Point. Now there is no escaping from Service Contract as you need to know what all operations you can consume. However, with WCF 4 there is a new feature called WCF discovery which helps you determine the end point dynamically ie at RunTime. Refer to following link http://msdn.microsoft.com/en-us/library/dd456791.aspx

Answer 3

If I understand you question properly you need some code that will add service in run-time without using any configuration in *.config file and *.svc files.

See that sample:

    Uri baseAddress = new Uri("http://localhost:8080/hello");
    // Create the ServiceHost.
    using (ServiceHost host = new ServiceHost(typeof(HelloWorldService), baseAddress))
    {
        // Enable metadata publishing.
    ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
    smb.HttpGetEnabled = true;
    smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15;
    host.Description.Behaviors.Add(smb);

    // Open the ServiceHost to start listening for messages. Since
    // no endpoints are explicitly configured, the runtime will create
    // one endpoint per base address for each service contract implemented
    // by the service.
    host.Open();

    Console.WriteLine("The service is ready at {0}", baseAddress);
    Console.WriteLine("Press <Enter> to stop the service.");
    Console.ReadLine();

    // Close the ServiceHost.
    host.Close();
}

It creates self-hosted service in console app.

http://msdn.microsoft.com/en-us/library/ms731758.aspx

Is that what you asked?