142 lines
4.2 KiB
C#
142 lines
4.2 KiB
C#
//
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// SvcHttpHandler.cs
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//
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// Author:
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// Ankit Jain <jankit@novell.com>
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// Atsushi Enomoto <atsushi@ximian.com>
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//
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// Copyright (C) 2006,2009-2010 Novell, Inc. http://www.novell.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.Collections.Concurrent;
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using System.Collections.ObjectModel;
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using System.Linq;
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using System.Web;
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using System.Threading;
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using System.ServiceModel;
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using System.ServiceModel.Activation;
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using System.ServiceModel.Channels.Http;
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using System.ServiceModel.Configuration;
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using System.ServiceModel.Description;
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namespace System.ServiceModel.Channels
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{
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internal class SvcHttpHandler : IHttpHandler
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{
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internal static SvcHttpHandler Current;
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static object type_lock = new object ();
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Type type;
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Type factory_type;
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string path;
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ServiceHostBase host;
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ConcurrentDictionary<HttpContext,ManualResetEvent> wcf_wait_handles = new ConcurrentDictionary<HttpContext,ManualResetEvent> ();
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int close_state;
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public SvcHttpHandler (Type type, Type factoryType, string path)
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{
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this.type = type;
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this.factory_type = factoryType;
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this.path = path;
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}
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public bool IsReusable
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{
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get { return true; }
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}
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public ServiceHostBase Host {
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get { return host; }
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}
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public void ProcessRequest (HttpContext context)
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{
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EnsureServiceHost ();
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var table = HttpListenerManagerTable.GetOrCreate (host);
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var manager = table.GetOrCreateManager (context.Request.Url, null);
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if (manager == null)
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manager = table.GetOrCreateManager (host.BaseAddresses [0], null);
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var wait = new ManualResetEvent (false);
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wcf_wait_handles [context] = wait;
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manager.ProcessNewContext (new System.ServiceModel.Channels.Http.AspNetHttpContextInfo (this, context));
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// This method must not return until the RequestContext
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// explicitly finishes replying. Otherwise xsp will
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// close the connection after this method call.
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wait.WaitOne ();
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}
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public void EndHttpRequest (HttpContext context)
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{
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ManualResetEvent wait;
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if (!wcf_wait_handles.TryRemove (context, out wait))
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return;
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if (wait != null)
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wait.Set ();
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}
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// called from SvcHttpHandlerFactory's remove callback (i.e.
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// unloading asp.net). It closes ServiceHost, then the host
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// in turn closes the listener and the channels it opened.
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// The channel listener calls CloseServiceChannel() to stop
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// accepting further requests on its shutdown.
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public void Close ()
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{
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host.Close ();
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host = null;
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}
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void EnsureServiceHost ()
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{
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lock (type_lock) {
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Current = this;
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try {
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EnsureServiceHostCore ();
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} finally {
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Current = null;
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}
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}
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}
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void EnsureServiceHostCore ()
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{
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if (host != null)
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return;
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//ServiceHost for this not created yet
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var baseUri = new Uri (new Uri (HttpContext.Current.Request.Url.GetLeftPart (UriPartial.Authority)), path);
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if (factory_type != null) {
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host = ((ServiceHostFactory) Activator.CreateInstance (factory_type)).CreateServiceHost (type.ToString(), new Uri [] {baseUri});
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}
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else
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host = new ServiceHost (type, baseUri);
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host.Extensions.Add (new VirtualPathExtension (baseUri.AbsolutePath));
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host.Open ();
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}
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}
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}
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