HostedHttpTransportManager.cs source code in C# .NET

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                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / System.ServiceModel.Activation / System / ServiceModel / Activation / HostedHttpTransportManager.cs / 1305376 / HostedHttpTransportManager.cs
                        
                        
                            //---------------------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------------------
namespace System.ServiceModel.Activation
{ 
    using System.Diagnostics;
    using System.Globalization; 
    using System.Runtime; 
    using System.Runtime.Diagnostics;
    using System.Security; 
    using System.Security.Permissions;
    using System.ServiceModel;
    using System.ServiceModel.Channels;
    using System.ServiceModel.Diagnostics; 
    using System.Threading;
    using System.Web; 
 
    class HostedHttpTransportManager : HttpTransportManager
    { 
        string scheme;
        int port;
        string host;
 
        internal HostedHttpTransportManager(BaseUriWithWildcard baseAddress) :
            base(baseAddress.BaseAddress, baseAddress.HostNameComparisonMode) 
        { 
            base.IsHosted = true;
        } 

        internal override bool IsCompatible(HttpChannelListener factory)
        {
            return true; 
        }
 
        internal override void OnClose(TimeSpan timeout) 
        {
            // empty 
        }

        internal override void OnOpen()
        { 
            // empty
        } 
 
        internal override void OnAbort()
        { 
            // empty
        }

        internal override string Scheme 
        {
            get 
            { 
                return this.scheme ?? (this.scheme = this.ListenUri.Scheme);
            } 
        }

        internal string Host
        { 
            get
            { 
                return this.host ?? (this.host = this.ListenUri.Host); 
            }
        } 

        internal int Port
        {
            get 
            {
                return this.port == 0 ? (this.port = this.ListenUri.Port) : this.port; 
            } 
        }
 
        static bool canTraceConnectionInformation = true;
        public void TraceConnectionInformation(HostedHttpRequestAsyncResult result)
        {
            if (result != null && DiagnosticUtility.ShouldTraceInformation && canTraceConnectionInformation) 
            {
                try 
                { 
                    IServiceProvider provider = (IServiceProvider)result.Application.Context;
                    HttpWorkerRequest workerRequest = (HttpWorkerRequest)provider.GetService(typeof(HttpWorkerRequest)); 
                    string localAddress = string.Format(CultureInfo.InvariantCulture,
                        "{0}:{1}", workerRequest.GetLocalAddress(), workerRequest.GetLocalPort());
                    string remoteAddress = string.Format(CultureInfo.InvariantCulture,
                        "{0}:{1}", workerRequest.GetRemoteAddress(), workerRequest.GetRemotePort()); 
                    TraceUtility.TraceHttpConnectionInformation(localAddress, remoteAddress, this);
                } 
                catch (SecurityException e) 
                {
                    canTraceConnectionInformation = false; 

                    // not re-throwing on purpose
                    if (DiagnosticUtility.ShouldTraceWarning)
                    { 
                        DiagnosticUtility.ExceptionUtility.TraceHandledException(e, TraceEventType.Warning);
                    } 
                } 
            }
        } 

        [Fx.Tag.SecurityNote(Critical = "Calls getters with LinkDemands in ASP .NET objects.", Safe = "Only returns the activity, doesn't leak the ASP .NET objects.")]
        [SecuritySafeCritical]
        public ServiceModelActivity CreateReceiveBytesActivity(HostedHttpRequestAsyncResult result) 
        {
            ServiceModelActivity retval = null; 
            if (result != null) 
            {
                TraceMessageReceived(result.RequestUri); 
                if (DiagnosticUtility.ShouldUseActivity)
                {
                    IServiceProvider provider = (IServiceProvider)result.Application.Context;
                    retval = ServiceModelActivity.CreateBoundedActivity(GetRequestTraceIdentifier(provider)); 
                    StartReceiveBytesActivity(retval, result.RequestUri);
                } 
            } 
            return retval;
        } 

        [Fx.Tag.SecurityNote(Critical = "Uses the HttpWorkerRequest to get the trace identifier, which Demands UnamangedCode.", Safe = "Only returns the trace id, doesn't leak the HttpWorkerRequest.")]
        [SecuritySafeCritical]
        [SecurityPermission(SecurityAction.Assert, UnmanagedCode = true)] 
        static Guid GetRequestTraceIdentifier(IServiceProvider provider)
        { 
            return ((HttpWorkerRequest)provider.GetService(typeof(HttpWorkerRequest))).RequestTraceIdentifier; 
        }
 
        internal void HttpContextReceived(HostedHttpRequestAsyncResult result)
        {
            using (DiagnosticUtility.ShouldUseActivity ? ServiceModelActivity.BoundOperation(this.Activity) : null)
            { 
                using (this.CreateReceiveBytesActivity(result))
                { 
                    this.TraceConnectionInformation(result); 
                    HttpChannelListener listener;
                    if (base.TryLookupUri(result.RequestUri, result.GetHttpMethod(), 
                        this.HostNameComparisonMode, out listener))
                    {
                        HostedHttpContext hostedContext = new HostedHttpContext(listener, result);
                        listener.HttpContextReceived(hostedContext, null); 
                        return;
                    } 
 
                    if (DiagnosticUtility.ShouldTraceError)
                    { 
                        TraceUtility.TraceEvent(TraceEventType.Error, TraceCode.HttpChannelMessageReceiveFailed, SR.TraceCodeHttpChannelMessageReceiveFailed,
                            new StringTraceRecord("IsRecycling", ServiceHostingEnvironment.IsRecycling.ToString(CultureInfo.CurrentCulture)),
                            this, null);
                    } 

                    if (ServiceHostingEnvironment.IsRecycling) 
                    { 
                        throw FxTrace.Exception.AsError(
                            new EndpointNotFoundException(SR.Hosting_ListenerNotFoundForActivationInRecycling(result.RequestUri.ToString()))); 
                    }
                    else
                    {
                        throw FxTrace.Exception.AsError( 
                            new EndpointNotFoundException(SR.Hosting_ListenerNotFoundForActivation(result.RequestUri.ToString())));
                    } 
                } 
            }
        } 
    }

    [Fx.Tag.SecurityNote(Critical = "Captures HttpContext.Current on construction, then can apply that state at a later time and reset on Dispose."
        + "Whole object is critical because where it was initially constructed can be used to control HttpContext.set_Current later and HttpContext.set_Current requires an elevation")] 
#pragma warning disable 618 // have not moved to the v4 security model yet
    [SecurityCritical(SecurityCriticalScope.Everything)] 
#pragma warning restore 618 
    class HostedThreadData
    { 
        CultureInfo cultureInfo;
        CultureInfo uiCultureInfo;
        HttpContext httpContext;
 
        public HostedThreadData()
        { 
            this.cultureInfo = CultureInfo.CurrentCulture; 
            this.uiCultureInfo = CultureInfo.CurrentUICulture;
            this.httpContext = HttpContext.Current; 
        }

        public IDisposable CreateContext()
        { 
            return new HostedAspNetContext(this);
        } 
 
        [SecurityPermission(SecurityAction.Assert, Unrestricted = true)]
        static void UnsafeApplyData(HostedThreadData data) 
        {
            // We set the CallContext.HostContext directly instead of setting HttpContext.Current because
            // the latter uses a demand instead of a link demand, which is very expensive in partial trust.
            System.Runtime.Remoting.Messaging.CallContext.HostContext = data.httpContext; 

            Thread currentThread = Thread.CurrentThread; 
            if (currentThread.CurrentCulture != data.cultureInfo) 
            {
                currentThread.CurrentCulture = data.cultureInfo; 
            }

            if (currentThread.CurrentUICulture != data.uiCultureInfo)
            { 
                currentThread.CurrentUICulture = data.uiCultureInfo;
            } 
        } 

        class HostedAspNetContext : IDisposable 
        {
            HostedThreadData oldData;

            public HostedAspNetContext(HostedThreadData newData) 
            {
                oldData = new HostedThreadData(); 
                HostedThreadData.UnsafeApplyData(newData); 
            }
 
            public void Dispose()
            {
                HostedThreadData.UnsafeApplyData(oldData);
            } 
        }
 
    } 
}

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

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