ServiceDiscoveryBehavior.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.ServiceModel.Discovery / System / ServiceModel / Discovery / ServiceDiscoveryBehavior.cs / 1305376 / ServiceDiscoveryBehavior.cs

                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System.ServiceModel.Discovery 
{
    using System.Collections.Generic; 
    using System.Collections.ObjectModel; 
    using System.Diagnostics.CodeAnalysis;
    using System.Runtime; 
    using System.ServiceModel.Channels;
    using System.ServiceModel.Description;
    using System.ServiceModel.Dispatcher;
 
    [Fx.Tag.XamlVisible(false)]
    public class ServiceDiscoveryBehavior : IServiceBehavior 
    { 
        NonNullItemCollection announcementEndpoints;
 
        public ServiceDiscoveryBehavior()
        {
            this.announcementEndpoints = new NonNullItemCollection();
        } 

        public Collection AnnouncementEndpoints 
        { 
            get
            { 
                return this.announcementEndpoints;
            }
        }
 
        [SuppressMessage(FxCop.Category.Design, FxCop.Rule.InterfaceMethodsShouldBeCallableByChildTypes)]
        void IServiceBehavior.AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, Collection endpoints, 
            BindingParameterCollection bindingParameters) 
        {
        } 

        [SuppressMessage(FxCop.Category.Design, FxCop.Rule.InterfaceMethodsShouldBeCallableByChildTypes)]
        void IServiceBehavior.Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
        { 
            if (serviceDescription == null)
            { 
                throw FxTrace.Exception.ArgumentNull("serviceDescription"); 
            }
            if (serviceHostBase == null) 
            {
                throw FxTrace.Exception.ArgumentNull("serviceHostBase");
            }
 
            List appEndpoints = this.GetApplicationEndpoints(serviceDescription);
 
            DiscoveryServiceExtension discoveryServiceExtension = 
                serviceHostBase.Extensions.Find();
 
            if (discoveryServiceExtension == null)
            {
                if (serviceDescription.Endpoints.Count > appEndpoints.Count)
                { 
                    discoveryServiceExtension =
                        new DefaultDiscoveryServiceExtension(DiscoveryDefaults.DuplicateMessageHistoryLength); 
                } 
                else
                { 
                    discoveryServiceExtension =
                        new DefaultDiscoveryServiceExtension(0);
                }
 
                serviceHostBase.Extensions.Add(discoveryServiceExtension);
            } 
 
            for (int i = 0; i < appEndpoints.Count; i++)
            { 
                appEndpoints[i].Behaviors.Add(
                    new EndpointDiscoveryMetadataInitializer(
                    discoveryServiceExtension.InternalPublishedEndpoints));
            } 
        }
 
        [SuppressMessage(FxCop.Category.Design, FxCop.Rule.InterfaceMethodsShouldBeCallableByChildTypes)] 
        void IServiceBehavior.ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
        { 
            if (serviceDescription == null)
            {
                throw FxTrace.Exception.ArgumentNull("serviceDescription");
            } 
            if (serviceHostBase == null)
            { 
                throw FxTrace.Exception.ArgumentNull("serviceHostBase"); 
            }
 
            DiscoveryServiceExtension discoveryServiceExtension = serviceHostBase.Extensions.Find();
            if (discoveryServiceExtension != null)
            {
                DiscoveryService discoveryService = discoveryServiceExtension.ValidateAndGetDiscoveryService(); 

                ServiceDiscoveryBehavior.SetDiscoveryImplementation(serviceHostBase, discoveryService); 
 
                if (this.announcementEndpoints.Count > 0)
                { 
                    serviceHostBase.ChannelDispatchers.Add(
                        new OnlineAnnouncementChannelDispatcher(
                        serviceHostBase,
                        this.announcementEndpoints, 
                        discoveryServiceExtension.InternalPublishedEndpoints,
                        discoveryService.MessageSequenceGenerator)); 
 
                    serviceHostBase.ChannelDispatchers.Insert(0,
                        new OfflineAnnouncementChannelDispatcher( 
                        serviceHostBase,
                        this.announcementEndpoints,
                        discoveryServiceExtension.InternalPublishedEndpoints,
                        discoveryService.MessageSequenceGenerator)); 
                }
            } 
        } 

        static void SetDiscoveryImplementation(ServiceHostBase host, DiscoveryService discoveryService) 
        {
            foreach (ChannelDispatcherBase channelDispatcherBase in host.ChannelDispatchers)
            {
                ChannelDispatcher channelDispatcher = channelDispatcherBase as ChannelDispatcher; 
                if (channelDispatcher != null)
                { 
                    foreach (EndpointDispatcher endpointDispatcher in channelDispatcher.Endpoints) 
                    {
                        if ((endpointDispatcher != null) && EndpointDiscoveryMetadata.IsDiscoverySystemEndpoint(endpointDispatcher)) 
                        {
                            SetDiscoveryImplementation(endpointDispatcher, discoveryService);
                        }
                    } 
                }
            } 
        } 

        static void SetDiscoveryImplementation(EndpointDispatcher endpointDispatcher, DiscoveryService discoveryService) 
        {
            DispatchRuntime dispatchRuntime = endpointDispatcher.DispatchRuntime;
            dispatchRuntime.SynchronizationContext = null;
            dispatchRuntime.ConcurrencyMode = ConcurrencyMode.Multiple; 
            ServiceDiscoveryInstanceContextProvider provider = new ServiceDiscoveryInstanceContextProvider(discoveryService);
            dispatchRuntime.InstanceContextProvider = provider; 
            dispatchRuntime.InstanceProvider = provider; 
            dispatchRuntime.Type = discoveryService.GetType();
        } 

        List GetApplicationEndpoints(ServiceDescription serviceDescription)
        {
            List appEndpoints = new List(serviceDescription.Endpoints.Count); 
            foreach (ServiceEndpoint endpoint in serviceDescription.Endpoints)
            { 
                if (!EndpointDiscoveryMetadata.IsDiscoverySystemEndpoint(endpoint)) 
                {
                    appEndpoints.Add(endpoint); 
                }
            }

            return appEndpoints; 
        }
 
        class EndpointDiscoveryMetadataInitializer : IEndpointBehavior 
        {
            Collection publishedEndpointCollection; 

            internal EndpointDiscoveryMetadataInitializer(Collection publishedEndpointCollection)
            {
                this.publishedEndpointCollection = publishedEndpointCollection; 
            }
 
            void IEndpointBehavior.AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters) 
            {
            } 

            void IEndpointBehavior.ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
            {
            } 

            void IEndpointBehavior.ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) 
            { 
                EndpointDiscoveryMetadata endpointDiscoveryMetadata = EndpointDiscoveryMetadata.FromServiceEndpoint(endpoint, endpointDispatcher);
 
                if (endpointDiscoveryMetadata != null)
                {
                    this.publishedEndpointCollection.Add(endpointDiscoveryMetadata);
                } 
            }
 
            void IEndpointBehavior.Validate(ServiceEndpoint endpoint) 
            {
            } 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK