ListenerAdapterBase.cs source code in C# .NET

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

namespace System.ServiceModel.Activation 
{
    using System; 
    using System.ComponentModel; 
    using System.Diagnostics;
    using System.Reflection; 
    using System.Runtime.InteropServices;
    using System.Security.Principal;
    using System.ServiceModel;
    using System.Threading; 
    using System.ServiceModel.Diagnostics;
    using System.Globalization; 
    using System.ServiceModel.Activation.Diagnostics; 

    abstract class ListenerAdapterBase 
    {
        WebHostUnsafeNativeMethods.WebhostListenerCallbacks listenerCallbacks;
        int protocolHandle = 0;
        int closed; 
        protected string protocolName = null;
 
        const int WebhostMajorVersion = 7; 
        const int WebhostMinorVersion = 0;
        static WebHostUnsafeNativeMethods.SafeFreeLibrary webHostIpm; 
        static WebHostUnsafeNativeMethods.WebhostGetVersion webhostGetVersion;
        static WebHostUnsafeNativeMethods.WebhostRegisterProtocol webhostRegisterProtocol;
        static WebHostUnsafeNativeMethods.WebhostOpenListenerChannelInstance webhostOpenListenerChannelInstance;
        static WebHostUnsafeNativeMethods.WebhostCloseAllListenerChannelInstances webhostCloseAllListenerChannelInstances; 
        static WebHostUnsafeNativeMethods.WebhostUnregisterProtocol webhostUnregisterProtocol;
 
        static ListenerAdapterBase() 
        {
#pragma warning suppress 56523 // [....], the Win32Exception ctor calls Marshal.GetLastWin32Error 
            webHostIpm = WebHostUnsafeNativeMethods.LoadLibraryEx(SMSvcHost.ListenerAdapterNativeLibrary, IntPtr.Zero, WebHostUnsafeNativeMethods.LOAD_WITH_ALTERED_SEARCH_PATH);
            if (webHostIpm.IsInvalid)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception()); 
            }
 
            webhostGetVersion = (WebHostUnsafeNativeMethods.WebhostGetVersion)GetProcDelegate(webHostIpm, "WebhostGetVersion"); 
            webhostRegisterProtocol = (WebHostUnsafeNativeMethods.WebhostRegisterProtocol)GetProcDelegate(webHostIpm, "WebhostRegisterProtocol");
            webhostUnregisterProtocol = (WebHostUnsafeNativeMethods.WebhostUnregisterProtocol)GetProcDelegate(webHostIpm, "WebhostUnregisterProtocol"); 
            webhostOpenListenerChannelInstance = (WebHostUnsafeNativeMethods.WebhostOpenListenerChannelInstance)GetProcDelegate(webHostIpm, "WebhostOpenListenerChannelInstance");
            webhostCloseAllListenerChannelInstances = (WebHostUnsafeNativeMethods.WebhostCloseAllListenerChannelInstances)GetProcDelegate(webHostIpm,
                "WebhostCloseAllListenerChannelInstances");
        } 

        protected ListenerAdapterBase(string protocolName) 
        { 
            if (string.IsNullOrEmpty(protocolName))
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("protocolName"));
            }
            this.protocolName = protocolName;
            listenerCallbacks = new WebHostUnsafeNativeMethods.WebhostListenerCallbacks(); 
            listenerCallbacks.dwBytesInCallbackStructure = Marshal.SizeOf(listenerCallbacks);
            listenerCallbacks.webhostListenerConfigManagerConnected = new WebHostUnsafeNativeMethods.WebhostListenerConfigManagerConnected(onConfigManagerConnected); 
            listenerCallbacks.webhostListenerConfigManagerDisconnected = new WebHostUnsafeNativeMethods.WebhostListenerConfigManagerDisconnected(onConfigManagerDisconnected); 
            listenerCallbacks.webhostListenerConfigManagerInitializationCompleted = new WebHostUnsafeNativeMethods.WebhostListenerConfigManagerInitializationCompleted(onConfigManagerInitializationCompleted);
            listenerCallbacks.webhostListenerApplicationPoolCreated = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolCreated(onApplicationPoolCreated); 
            listenerCallbacks.webhostListenerApplicationPoolDeleted = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolDeleted(onApplicationPoolDeleted);
            listenerCallbacks.webhostListenerApplicationPoolIdentityChanged = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolIdentityChanged(onApplicationPoolIdentityChanged);
            listenerCallbacks.webhostListenerApplicationPoolStateChanged = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolStateChanged(onApplicationPoolStateChanged);
            listenerCallbacks.webhostListenerApplicationPoolCanOpenNewListenerChannelInstance = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolCanOpenNewListenerChannelInstance(onApplicationPoolCanLaunchQueueInstance); 
            listenerCallbacks.webhostListenerApplicationPoolAllListenerChannelInstancesStopped = new WebHostUnsafeNativeMethods.WebhostListenerApplicationPoolAllListenerChannelInstancesStopped(onApplicationPoolAllQueueInstancesStopped);
            listenerCallbacks.webhostListenerApplicationCreated = new WebHostUnsafeNativeMethods.WebhostListenerApplicationCreated(onApplicationCreated); 
            listenerCallbacks.webhostListenerApplicationDeleted = new WebHostUnsafeNativeMethods.WebhostListenerApplicationDeleted(onApplicationDeleted); 
            listenerCallbacks.webhostListenerApplicationBindingsChanged = new WebHostUnsafeNativeMethods.WebhostListenerApplicationBindingsChanged(onApplicationBindingsChanged);
            listenerCallbacks.webhostListenerApplicationAppPoolChanged = new WebHostUnsafeNativeMethods.WebhostListenerApplicationAppPoolChanged(onApplicationAppPoolChanged); 
            listenerCallbacks.webhostListenerApplicationRequestsBlockedChanged = new WebHostUnsafeNativeMethods.WebhostListenerApplicationRequestsBlockedChanged(onApplicationRequestsBlockedChanged);
        }

        static Delegate GetProcDelegate(WebHostUnsafeNativeMethods.SafeFreeLibrary library, string procName) 
        {
#pragma warning suppress 56523 // [....], the Win32Exception ctor calls Marshal.GetLastWin32Error 
            IntPtr funcPtr = WebHostUnsafeNativeMethods.GetProcAddress(library, procName); 
            if (funcPtr == IntPtr.Zero)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(SR.GetString(SR.WebHostProcNotFound,
                    procName, SMSvcHost.ListenerAdapterNativeLibrary)));
            }
 
            return Marshal.GetDelegateForFunctionPointer(funcPtr, typeof(TDelegate));
        } 
 
        protected string[] ParseBindings(IntPtr bindingsMultiSz, int numberOfBindings)
        { 
            if (bindingsMultiSz == IntPtr.Zero)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("bindingsMultiSz"));
            } 
            if (numberOfBindings < 0)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException("numberOfBindings")); 
            }
            string[] bindings = new string[numberOfBindings]; 
            unsafe
            {
                ushort* bindingsBufferPtr = (ushort*)bindingsMultiSz;
                for (int i = 0; i < numberOfBindings; i++) 
                {
                    string bindingString = Marshal.PtrToStringUni((IntPtr)bindingsBufferPtr); 
                    if (string.IsNullOrEmpty(bindingString)) 
                    {
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException("bindingsMultiSz")); 
                    }
                    bindings[i] = bindingString;
                    bindingsBufferPtr += bindingString.Length + 1;
                } 
            }
            return bindings; 
        } 

        void onApplicationAppPoolChanged(IntPtr context, string appKey, string appPoolId) 
        {
            this.OnApplicationAppPoolChanged(appKey, appPoolId);
        }
        protected abstract void OnApplicationAppPoolChanged(string appKey, string appPoolId); 

        void onApplicationBindingsChanged(IntPtr context, string appKey, IntPtr bindingsMultiSz, int numberOfBindings) 
        { 
            this.OnApplicationBindingsChanged(appKey, bindingsMultiSz, numberOfBindings);
        } 
        protected abstract void OnApplicationBindingsChanged(string appKey, IntPtr bindingsMultiSz, int numberOfBindings);

        void onApplicationCreated(IntPtr context, string appKey, string path, int siteId, string appPoolId, IntPtr bindingsMultiSz, int numberOfBindings, bool requestsBlocked)
        { 
            this.OnApplicationCreated(appKey, path, siteId, appPoolId, bindingsMultiSz, numberOfBindings, requestsBlocked);
        } 
        protected abstract void OnApplicationCreated(string appKey, string path, int siteId, string appPoolId, IntPtr bindingsMultiSz, int numberOfBindings, bool requestsBlocked); 

        void onApplicationDeleted(IntPtr context, string appKey) 
        {
            this.OnApplicationDeleted(appKey);
        }
        protected abstract void OnApplicationDeleted(string appKey); 

        void onApplicationPoolAllQueueInstancesStopped(IntPtr context, string appPoolId, int listenerChannelId) 
        { 
            this.OnApplicationPoolAllQueueInstancesStopped(appPoolId, listenerChannelId);
        } 
        protected abstract void OnApplicationPoolAllQueueInstancesStopped(string appPoolId, int listenerChannelId);

        void onApplicationPoolCanLaunchQueueInstance(IntPtr context, string appPoolId, int listenerChannelId)
        { 
            this.OnApplicationPoolCanLaunchQueueInstance(appPoolId, listenerChannelId);
        } 
        protected abstract void OnApplicationPoolCanLaunchQueueInstance(string appPoolId, int listenerChannelId); 

        void onApplicationPoolCreated(IntPtr context, string appPoolId, IntPtr sid) 
        {
            this.OnApplicationPoolCreated(appPoolId, new SecurityIdentifier(sid));
        }
        protected abstract void OnApplicationPoolCreated(string appPoolId, SecurityIdentifier sid); 

        void onApplicationPoolDeleted(IntPtr context, string appPoolId) 
        { 
            this.OnApplicationPoolDeleted(appPoolId);
        } 
        protected abstract void OnApplicationPoolDeleted(string appPoolId);

        void onApplicationPoolIdentityChanged(IntPtr context, string appPoolId, IntPtr sid)
        { 
            this.OnApplicationPoolIdentityChanged(appPoolId, new SecurityIdentifier(sid));
        } 
        protected abstract void OnApplicationPoolIdentityChanged(string appPoolId, SecurityIdentifier sid); 

        void onApplicationPoolStateChanged(IntPtr context, string appPoolId, bool isEnabled) 
        {
            this.OnApplicationPoolStateChanged(appPoolId, isEnabled);
        }
        protected abstract void OnApplicationPoolStateChanged(string appPoolId, bool isEnabled); 

        void onApplicationRequestsBlockedChanged(IntPtr context, string appKey, bool requestsBlocked) 
        { 
            this.OnApplicationRequestsBlockedChanged(appKey, requestsBlocked);
        } 
        protected abstract void OnApplicationRequestsBlockedChanged(string appKey, bool requestsBlocked);

        void onConfigManagerConnected(IntPtr context)
        { 
            this.OnConfigManagerConnected();
        } 
 
        protected abstract void OnConfigManagerConnected();
 
        void onConfigManagerDisconnected(IntPtr context, int hresult)
        {
            this.OnConfigManagerDisconnected(hresult);
        } 
        protected abstract void OnConfigManagerDisconnected(int hresult);
 
        void onConfigManagerInitializationCompleted(IntPtr context) 
        {
            this.OnConfigManagerInitializationCompleted(); 
        }
        protected abstract void OnConfigManagerInitializationCompleted();

        protected void Close() 
        {
            if (Interlocked.Increment(ref closed) > 1) 
            { 
                return;
            } 
            int hresult = webhostUnregisterProtocol(protocolHandle);
            if (hresult != 0)
            {
                if (DiagnosticUtility.ShouldTraceError) 
                {
                    ListenerTraceUtility.TraceEvent(TraceEventType.Error, TraceCode.WasWebHostAPIFailed, 
                        new StringTraceRecord("HRESULT", SR.GetString(SR.TraceCodeWasWebHostAPIFailed, "WebhostUnregisterProtocol", 
                        hresult.ToString(CultureInfo.CurrentCulture))), this, null);
                } 
            }
        }

        protected int OpenListenerChannelInstance(string appPoolId, int listenerChannelId, byte[] queueBlob) 
        {
            DiagnosticUtility.DebugAssert(appPoolId != null, ""); 
 
            int queueBlobLength = (queueBlob != null) ? queueBlob.Length : 0;
            return webhostOpenListenerChannelInstance(protocolHandle, appPoolId, listenerChannelId, queueBlob, queueBlobLength); 
        }

        internal virtual void Open()
        { 
            int major, minor;
            int hresult = webhostGetVersion(out major, out minor); 
            if (hresult != 0) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(hresult)); 
            }

            if (major != WebhostMajorVersion ||
                minor != WebhostMinorVersion) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new PlatformNotSupportedException( 
                    SR.GetString(SR.WebHostVersionMismatch, WebhostMajorVersion, WebhostMinorVersion, 
                    major, minor)));
            } 

            hresult = webhostRegisterProtocol(protocolName, ref listenerCallbacks, IntPtr.Zero, out protocolHandle);
            if (hresult != 0 || protocolHandle == 0)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(hresult));
            } 
        } 

        protected int CloseAllListenerChannelInstances(string appPoolId, int listenerChannelId) 
        {
            if (string.IsNullOrEmpty(appPoolId))
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("appPoolId")); 
            }
            return webhostCloseAllListenerChannelInstances(protocolHandle, appPoolId, listenerChannelId); 
        } 
    }
} 


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

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