PeerDuplexChannel.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Channels / PeerDuplexChannel.cs / 1 / PeerDuplexChannel.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.ServiceModel.Channels 
{
    using System; 
    using System.Diagnostics; 
    using System.ServiceModel;
    using System.ServiceModel.Diagnostics; 
    using System.ServiceModel.Dispatcher;
    using System.ServiceModel.Security;
    using System.Threading;
 
    class PeerDuplexChannel : DuplexChannel
    { 
        EndpointAddress to; 
        Uri via;
        PeerNode peerNode; 
        bool released = false;
        SecurityProtocol securityProtocol;
        ChannelManagerBase channelManager;
        PeerMessageDispatcher messageDispatcher; 

        public PeerDuplexChannel(PeerNodeImplementation peerNode, PeerNodeImplementation.Registration registration, ChannelManagerBase channelManager, 
                                 EndpointAddress localAddress, Uri via) 
            : base(channelManager, localAddress)
        { 
            PeerNodeImplementation.ValidateVia(via);
            if(registration != null)
            {
                peerNode = PeerNodeImplementation.Get(via, registration); 
            }
            this.peerNode = new PeerNode(peerNode); 
            this.to = localAddress; 
            this.via = via;
            this.channelManager = channelManager; 
        }

        public override EndpointAddress RemoteAddress
        { 
            get { return this.to; }
        } 
 
        public override Uri Via
        { 
            get { return this.via; }
        }

        public PeerNodeImplementation InnerNode 
        {
            get { return this.peerNode.InnerNode; } 
        } 

        internal PeerMessageDispatcher Dispatcher 
        {
            get
            {
                return this.messageDispatcher; 
            }
            set 
            { 
                DiagnosticUtility.DebugAssert(this.State < CommunicationState.Opened, "Can not change the dispatcher on DuplexChannel after Open.");
                this.messageDispatcher = value; 
            }
        }

        // add headers to an outgoing message 
        protected override void AddHeadersTo(Message message)
        { 
            base.AddHeadersTo(message); 

            if (this.to != null) 
            {
                this.to.ApplyTo(message);
            }
        } 

        public override T GetProperty() 
        { 
            if(typeof(T) == typeof(PeerNode))
            { 
                return (T) (object) this.peerNode;
            }
            else if(typeof(T) == typeof(PeerNodeImplementation))
            { 
                return  (T) (object) this.peerNode.InnerNode;
            } 
            else if(typeof(T) == typeof(IOnlineStatus)) 
            {
                return (T) (object) this.peerNode; 
            }
            else if (typeof(T) == typeof(FaultConverter))
            {
                return (T)(object)FaultConverter.GetDefaultFaultConverter(MessageVersion.Soap12WSAddressing10); 
            }
            return base.GetProperty(); 
        } 

        protected override void OnAbort() 
        {
            base.OnAbort();
            if (this.State < CommunicationState.Closed)
            { 
                try
                { 
                    this.peerNode.InnerNode.Abort(); 
                }
                catch(Exception e) 
                {
                    if(DiagnosticUtility.IsFatal(e)) throw;
                    DiagnosticUtility.ExceptionUtility.TraceHandledException(e, TraceEventType.Information);
                } 
            }
        } 
 
        protected override IAsyncResult OnBeginClose(TimeSpan timeout, AsyncCallback callback, object state)
        { 
            return this.peerNode.InnerNode.BeginClose(timeout, callback, state);
        }

        protected override IAsyncResult OnBeginOpen(TimeSpan timeout, AsyncCallback callback, object state) 
        {
            IAsyncResult result = this.peerNode.InnerNode.BeginOpen(timeout, callback, state, true); 
            return result; 
        }
 
        protected override void OnClose(TimeSpan timeout)
        {
            TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
            this.peerNode.InnerNode.Close(timeoutHelper.RemainingTime()); 
            base.OnClose(timeoutHelper.RemainingTime());
        } 
 
        protected override void OnClosing()
        { 
            base.OnClosing();
            ReleaseNode();
        }
 
        void ReleaseNode()
        { 
            if (!this.released) 
            {
                bool release = false; 
                lock(ThisLock)
                {
                    if (!this.released)
                    { 
                        release = this.released = true;
                    } 
                } 
                if (release && (this.peerNode != null))
                { 
                    if(this.messageDispatcher != null)
                        this.messageDispatcher.Unregister(false);
                    this.peerNode.InnerNode.Release();
                } 
            }
        } 
 
        protected override void OnEndClose(IAsyncResult result)
        { 
            PeerNodeImplementation.EndClose(result);
        }

        protected override void OnEndOpen(IAsyncResult result) 
        {
            PeerNodeImplementation.EndOpen(result); 
        } 

        protected override void OnEnqueueItem(Message message) 
        {
            // set the message's via to the uri on which it was received
            message.Properties.Via = via;
 
            if (DiagnosticUtility.ShouldTraceInformation)
            { 
                TraceUtility.TraceEvent(TraceEventType.Information, TraceCode.PeerChannelMessageReceived, this, message); 
            }
        } 

        protected override void OnOpen(TimeSpan timeout)
        {
            this.peerNode.OnOpen(); 
            this.peerNode.InnerNode.Open(timeout, true);
        } 
 
        protected override void OnFaulted()
        { 
            base.OnFaulted();
            ReleaseNode();
        }
 
        protected override void OnSend(Message message, TimeSpan timeout)
        { 
            EndSend(BeginSend(message, timeout, null, null)); 
        }
 
        protected override IAsyncResult OnBeginSend(Message message, TimeSpan timeout, AsyncCallback callback, object state)
        {
            TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
            DiagnosticUtility.DebugAssert(message.Headers.Action != message.Version.Addressing.DefaultFaultAction, "fault action in duplex.send"); 

            if (this.securityProtocol == null) 
            { 
                lock(ThisLock)
                { 
                    if (this.securityProtocol == null)
                    {
                        this.securityProtocol = ((IPeerFactory)channelManager).SecurityManager.CreateSecurityProtocol(this.to, timeoutHelper.RemainingTime());
                    } 
                }
            } 
            return this.peerNode.InnerNode.BeginSend(this, message, this.via, (ITransportFactorySettings)Manager, 
                timeoutHelper.RemainingTime(), callback, state, this.securityProtocol);
        } 

        protected override void OnEndSend(IAsyncResult result)
        {
            PeerNodeImplementation.EndSend(result); 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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PeerDuplexChannel.cs source code in C# .NET

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