BaseAppDomainProtocolHandler.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / WasHosting / System / ServiceModel / WasHosting / BaseAppDomainProtocolHandler.cs / 1305376 / BaseAppDomainProtocolHandler.cs
                        
                        
                            //---------------------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------------------

namespace System.ServiceModel.WasHosting 
{
    using System; 
    using System.Diagnostics; 
    using System.Diagnostics.CodeAnalysis;
    using System.ServiceModel; 
    using System.ServiceModel.Channels;
    using System.Web;
    using System.Web.Hosting;
    using System.ServiceModel.Activation; 
    using System.ServiceModel.Diagnostics;
    using System.Runtime; 
    using System.Runtime.InteropServices; 

 
    abstract class BaseAppDomainProtocolHandler : AppDomainProtocolHandler
    {
        public readonly static TimeSpan DefaultStopTimeout = TimeSpan.FromSeconds(30);
 
        string protocolId;
        IListenerChannelCallback listenerChannelCallback; 
        protected ListenerChannelContext listenerChannelContext; 
        object syncRoot = new object();
 
        [SuppressMessage(FxCop.Category.Performance, FxCop.Rule.AvoidUncalledPrivateCode,
            Justification = "Instantiated by ASP.NET")]
        protected BaseAppDomainProtocolHandler(string protocolId)
            : base() 
        {
            this.protocolId = protocolId; 
        } 

        object ThisLock 
        {
            get
            {
                return this.syncRoot; 
            }
        } 
 
        protected void OnMessageReceived()
        { 
            try
            {
                IListenerChannelCallback callback = this.listenerChannelCallback;
                if (callback != null) 
                {
                    callback.ReportMessageReceived(); 
                } 
            }
            catch (COMException exception) 
            {
                if (DiagnosticUtility.ShouldTraceWarning)
                {
                    DiagnosticUtility.ExceptionUtility.TraceHandledException(exception, TraceEventType.Warning); 
                }
                // The listener adapter might have gone away. Ignore the error. 
            } 
        }
 
        // Start per-process listening for messages
        public override void StartListenerChannel(IListenerChannelCallback listenerChannelCallback)
        {
            Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel()"); 
            if (listenerChannelCallback == null)
            { 
                DiagnosticUtility.DebugAssert("listenerChannelCallback is null"); 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperInternal(false);
            } 

            this.listenerChannelCallback = listenerChannelCallback;

            int listenerChannelDataLength = listenerChannelCallback.GetBlobLength(); 
            byte[] listenerChannelData = new byte[listenerChannelDataLength];
            listenerChannelCallback.GetBlob(listenerChannelData, ref listenerChannelDataLength); 
            Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel() GetBlob() contains " + listenerChannelDataLength + " bytes"); 

            listenerChannelContext = ListenerChannelContext.Hydrate(listenerChannelData); 

            Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel() calling OnStart()");
#if DEBUG
            // Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel() waiting for you to attach the debugger to " + Process.GetCurrentProcess().ProcessName + " Pid: " + Process.GetCurrentProcess().Id); 
            // for (int sleepCount = 0; sleepCount < 30 && !Debugger.IsAttached && !ListenerUnsafeNativeMethods.IsDebuggerPresent(); sleepCount++) { Thread.Sleep(500); } Debugger.Break();
#endif 
            try 
            {
                OnStart(); 

                listenerChannelCallback.ReportStarted();
                Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel() called ReportStarted()");
            } 
            catch (CommunicationException exception)
            { 
                Debug.Print("BaseAppDomainProtocolHandler.StartListenerChannel() failed in OnStart():\r\n" + exception); 
                DiagnosticUtility.EventLog.LogEvent(TraceEventType.Error,
                    EventLogCategory.WebHost, 
                    EventLogEventId.WebHostFailedToListen,
                    listenerChannelContext.AppKey,
                    this.protocolId,
                    TraceUtility.CreateSourceString(this), 
                    exception.ToString());
 
                throw; 
            }
        } 

        protected virtual void OnStart() { }
        protected virtual void OnStop() { }
 
        public override void StopProtocol(bool immediate)
        { 
            Debug.Print("BaseAppDomainProtocolHandler.StopProtocol() immediate: " + immediate + " calling ReportStopped()"); 

            Stop(); 
            HostingEnvironment.UnregisterObject(this);
        }

        public override void StopListenerChannel(int listenerChannelId, bool immediate) 
        {
            Debug.Print("BaseAppDomainProtocolHandler.StopListenerChannel() listenerChannelId: " + listenerChannelId + " immediate: " + immediate + " calling ReportStopped()"); 
            if (listenerChannelId != listenerChannelContext.ListenerChannelId) 
            {
                DiagnosticUtility.DebugAssert("Invalid ListenerChannel ID!"); 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperInternal(false);
            }

            Stop(); 
        }
 
        void Stop() 
        {
            lock (ThisLock) 
            {
                if (this.listenerChannelCallback != null)
                {
                    OnStop(); 
                    this.listenerChannelCallback.ReportStopped(0);
                    this.listenerChannelCallback = null; 
                } 
            }
        } 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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BaseAppDomainProtocolHandler.cs source code in C# .NET

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