Code:
/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Channels / TransportManager.cs / 1 / TransportManager.cs
//---------------------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All rights reserved. //--------------------------------------------------------------------------- namespace System.ServiceModel.Channels { using System.Collections.Generic; using System.ServiceModel; using System.Diagnostics; using System.IO; using System.Net; using System.ServiceModel.Diagnostics; using System.Text; using System.Threading; using System.Web; using System.Web.Hosting; abstract class TransportManager { ServiceModelActivity activity; int openCount; object thisLock = new object(); protected ServiceModelActivity Activity { get { return this.activity; } } internal abstract string Scheme { get;} internal object ThisLock { get { return this.thisLock; } } internal void Close(TransportChannelListener channelListener) { using (ServiceModelActivity.BoundOperation(this.Activity)) { this.Unregister(channelListener); } lock (ThisLock) { if (openCount <= 0) { DiagnosticUtility.DebugAssert("Invalid Open/Close state machine."); throw DiagnosticUtility.ExceptionUtility.ThrowHelperInternal(false); } openCount--; if (openCount == 0) { // Wrap the final close here with transfers. using (ServiceModelActivity.BoundOperation(this.Activity, true)) { OnClose(); } if (this.Activity != null) { this.Activity.Dispose(); } } } } internal static void EnsureRegistered(UriPrefixTable addressTable, TChannelListener channelListener, HostNameComparisonMode registeredComparisonMode) where TChannelListener : TransportChannelListener { TChannelListener existingFactory; if (!addressTable.TryLookupUri(channelListener.Uri, registeredComparisonMode, out existingFactory) || (existingFactory != channelListener)) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString( SR.ListenerFactoryNotRegistered, channelListener.Uri))); } } // Must be called under lock(ThisLock). protected void Fault (UriPrefixTable addressTable, Exception exception) where TChannelListener : ChannelListenerBase { foreach (KeyValuePair pair in addressTable.GetAll()) { TChannelListener listener = pair.Value; listener.Fault(exception); listener.Abort(); } } internal abstract void OnClose(); internal abstract void OnOpen(); internal void Open(TransportChannelListener channelListener) { if (DiagnosticUtility.ShouldUseActivity) { if (this.activity == null) { this.activity = ServiceModelActivity.CreateActivity(true); if (DiagnosticUtility.ShouldUseActivity) { DiagnosticUtility.DiagnosticTrace.TraceTransfer(this.Activity.Id); ServiceModelActivity.Start(this.Activity, SR.GetString(SR.ActivityListenAt, channelListener.Uri.ToString()), ActivityType.ListenAt); } } channelListener.Activity = this.Activity; } using (ServiceModelActivity.BoundOperation(this.Activity)) { if (DiagnosticUtility.ShouldTraceInformation) { DiagnosticUtility.DiagnosticTrace.TraceEvent(TraceEventType.Information, TraceCode.TransportListen, SR.GetString(SR.TraceCodeTransportListen, channelListener.Uri.ToString()), null, null, this); } this.Register(channelListener); try { lock (ThisLock) { if (openCount == 0) { OnOpen(); } openCount++; } } catch { this.Unregister(channelListener); throw; } } } internal abstract void Register(TransportChannelListener channelListener); // should only call this under ThisLock (unless accessing purely for inspection) protected void ThrowIfOpen() { if (openCount > 0) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError( new InvalidOperationException(SR.GetString(SR.TransportManagerOpen))); } } internal abstract void Unregister(TransportChannelListener channelListener); } delegate IList SelectTransportManagersCallback(); class TransportManagerContainer { IList transportManagers; TransportChannelListener listener; bool closed; object tableLock; public TransportManagerContainer(TransportChannelListener listener) { this.listener = listener; this.tableLock = listener.TransportManagerTable; this.transportManagers = new List (); } TransportManagerContainer(TransportManagerContainer source) { this.listener = source.listener; this.tableLock = source.tableLock; this.transportManagers = new List (); for (int i = 0; i < source.transportManagers.Count; i++) { this.transportManagers.Add(source.transportManagers[i]); } } // copy contents into a new container (used for listener/channel lifetime decoupling) public static TransportManagerContainer TransferTransportManagers(TransportManagerContainer source) { TransportManagerContainer result = null; lock (source.tableLock) { if (source.transportManagers.Count > 0) { result = new TransportManagerContainer(source); source.transportManagers.Clear(); } } return result; } public IAsyncResult BeginOpen(SelectTransportManagersCallback selectTransportManagerCallback, AsyncCallback callback, object state) { return new OpenAsyncResult(selectTransportManagerCallback, this, callback, state); } public void EndOpen(IAsyncResult result) { OpenAsyncResult.End(result); } public void Open(SelectTransportManagersCallback selectTransportManagerCallback) { lock (this.tableLock) { if (closed) // if we've been aborted then don't get transport managers { return; } IList foundTransportManagers = selectTransportManagerCallback(); if (foundTransportManagers == null) // nothing to do { return; } for (int i = 0; i < foundTransportManagers.Count; i++) { TransportManager transportManager = foundTransportManagers[i]; transportManager.Open(this.listener); this.transportManagers.Add(transportManager); } } } public IAsyncResult BeginClose(TimeSpan timeout, AsyncCallback callback, object state) { return new CloseAsyncResult(this, callback, state); } public void EndClose(IAsyncResult result) { CloseAsyncResult.End(result); } public void Close() { if (this.closed) { return; } lock (this.tableLock) { if (this.closed) { return; } this.closed = true; foreach (TransportManager transportManager in this.transportManagers) { transportManager.Close(listener); } this.transportManagers.Clear(); } } abstract class OpenOrCloseAsyncResult : TraceAsyncResult { TransportManagerContainer parent; static WaitCallback scheduledCallback = new WaitCallback(OnScheduled); protected OpenOrCloseAsyncResult(TransportManagerContainer parent, AsyncCallback callback, object state) : base(callback, state) { this.parent = parent; } protected void Begin() { IOThreadScheduler.ScheduleCallback(scheduledCallback, this); } static void OnScheduled(object state) { ((OpenOrCloseAsyncResult)state).OnScheduled(); } void OnScheduled() { using (ServiceModelActivity.BoundOperation(this.CallbackActivity)) { Exception completionException = null; try { this.OnScheduled(this.parent); } #pragma warning suppress 56500 // [....], transferring exception to another thread catch (Exception e) { if (DiagnosticUtility.IsFatal(e)) { throw; } completionException = e; } this.Complete(false, completionException); } } protected abstract void OnScheduled(TransportManagerContainer parent); } sealed class CloseAsyncResult : OpenOrCloseAsyncResult { public CloseAsyncResult(TransportManagerContainer parent, AsyncCallback callback, object state) : base(parent, callback, state) { this.Begin(); } public static void End(IAsyncResult result) { AsyncResult.End (result); } protected override void OnScheduled(TransportManagerContainer parent) { parent.Close(); } } sealed class OpenAsyncResult : OpenOrCloseAsyncResult { SelectTransportManagersCallback selectTransportManagerCallback; public OpenAsyncResult(SelectTransportManagersCallback selectTransportManagerCallback, TransportManagerContainer parent, AsyncCallback callback, object state) : base(parent, callback, state) { this.selectTransportManagerCallback = selectTransportManagerCallback; this.Begin(); } public static void End(IAsyncResult result) { AsyncResult.End (result); } protected override void OnScheduled(TransportManagerContainer parent) { parent.Open(this.selectTransportManagerCallback); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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