mcs/class/System.ServiceModel/System.ServiceModel.Channels/ReplyChannelBase.cs

   1 //
   2 // ReplyChannelBase.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2006 Novell, Inc.  http://www.novell.com
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.IO;
  31 using System.Net;
  32 using System.Net.Security;
  33 using System.ServiceModel;
  34 using System.ServiceModel.Description;
  35 using System.ServiceModel.Security;
  36 using System.Threading;
  37
  38 namespace System.ServiceModel.Channels
  39 {
  40         internal abstract class InternalReplyChannelBase : ReplyChannelBase
  41         {
  42                 public InternalReplyChannelBase (ChannelListenerBase listener)
  43                         : base (listener)
  44                 {
  45                         local_address = new EndpointAddress (listener.Uri);
  46                 }
  47
  48                 EndpointAddress local_address;
  49
  50                 public override EndpointAddress LocalAddress {
  51                         get { return local_address; }
  52                 }
  53         }
  54
  55         internal abstract class ReplyChannelBase : ChannelBase, IReplyChannel
  56         {
  57                 public ReplyChannelBase (ChannelListenerBase listener)
  58                         : base (listener)
  59                 {
  60                         this.listener = listener;
  61                 }
  62
  63                 ChannelListenerBase listener;
  64
  65                 public ChannelListenerBase Listener {
  66                         get { return listener; }
  67                 }
  68
  69                 public abstract EndpointAddress LocalAddress { get; }
  70
  71                 public override T GetProperty<T> ()
  72                 {
  73                         if (typeof (T) == typeof (MessageVersion) && listener is IHasMessageEncoder)
  74                                 return (T) (object) ((IHasMessageEncoder) listener).MessageEncoder.MessageVersion;
  75                         if (typeof (T) == typeof (IChannelListener))
  76                                 return (T) (object) listener;
  77                         return base.GetProperty<T> ();
  78                 }
  79
  80                 // FIXME: this is wrong. Implement all of them in each channel.
  81                 protected override void OnAbort ()
  82                 {
  83                         OnClose (TimeSpan.Zero);
  84                 }
  85
  86                 protected override void OnClose (TimeSpan timeout)
  87                 {
  88                         if (currentAsyncThreads.Count > 0)
  89                                 if (!CancelAsync (timeout))
  90                                         foreach (Thread asyncThread in currentAsyncThreads)
  91                                                 asyncThread.Abort ();
  92                 }
  93
  94                 public virtual bool CancelAsync (TimeSpan timeout)
  95                 {
  96                         // FIXME: It should wait for the actual completion.
  97                         return currentAsyncResults.Count > 0;
  98                         //return CurrentAsyncResult == null || CurrentAsyncResult.AsyncWaitHandle.WaitOne (timeout);
  99                 }
 100
 101                 public virtual bool TryReceiveRequest ()
 102                 {
 103                         RequestContext dummy;
 104                         return TryReceiveRequest (DefaultReceiveTimeout, out dummy);
 105                 }
 106
 107                 public abstract bool TryReceiveRequest (TimeSpan timeout, out RequestContext context);
 108
 109                 delegate bool TryReceiveDelegate (TimeSpan timeout, out RequestContext context);
 110                 TryReceiveDelegate try_recv_delegate;
 111
 112                 object async_result_lock = new object ();
 113                 HashSet<Thread> currentAsyncThreads = new HashSet<Thread>();
 114                 HashSet<IAsyncResult> currentAsyncResults = new HashSet<IAsyncResult>();
 115
 116                 public virtual IAsyncResult BeginTryReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 117                 {
 118                         IAsyncResult result = null;
 119
 120                         if (try_recv_delegate == null)
 121                                 try_recv_delegate = new TryReceiveDelegate (delegate (TimeSpan tout, out RequestContext ctx) {
 122                                         lock (async_result_lock) {
 123                                                 if (currentAsyncResults.Contains (result))
 124                                                         currentAsyncThreads.Add (Thread.CurrentThread);
 125                                         }
 126                                         try {
 127                                                 return TryReceiveRequest (tout, out ctx);
 128                                         } finally {
 129                                                 lock (async_result_lock) {
 130                                                         currentAsyncResults.Remove (result);
 131                                                         currentAsyncThreads.Remove (Thread.CurrentThread);
 132                                                 }
 133                                         }
 134                                         });
 135                         RequestContext dummy;
 136                         lock (async_result_lock) {
 137                                 result = try_recv_delegate.BeginInvoke (timeout, out dummy, callback, state);
 138                                 currentAsyncResults.Add (result);
 139                         }
 140                         // Note that at this point result can be missing from currentAsyncResults here if delegate has run to completion
 141                         return result;
 142                 }
 143
 144                 public virtual bool EndTryReceiveRequest (IAsyncResult result)
 145                 {
 146                         RequestContext dummy;
 147                         return EndTryReceiveRequest (result, out dummy);
 148                 }
 149
 150                 public virtual bool EndTryReceiveRequest (IAsyncResult result, out RequestContext context)
 151                 {
 152                         if (try_recv_delegate == null)
 153                                 throw new InvalidOperationException ("BeginTryReceiveRequest operation has not started");
 154                         return try_recv_delegate.EndInvoke (out context, result);
 155                 }
 156
 157                 public virtual bool WaitForRequest ()
 158                 {
 159                         return WaitForRequest (DefaultReceiveTimeout);
 160                 }
 161
 162                 public abstract bool WaitForRequest (TimeSpan timeout);
 163
 164                 Func<TimeSpan,bool> wait_delegate;
 165
 166                 public virtual IAsyncResult BeginWaitForRequest (TimeSpan timeout, AsyncCallback callback, object state)
 167                 {
 168                         if (wait_delegate == null)
 169                                 wait_delegate = new Func<TimeSpan,bool> (WaitForRequest);
 170                         return wait_delegate.BeginInvoke (timeout, callback, state);
 171                 }
 172
 173                 public virtual bool EndWaitForRequest (IAsyncResult result)
 174                 {
 175                         if (wait_delegate == null)
 176                                 throw new InvalidOperationException ("BeginWaitForRequest operation has not started");
 177                         return wait_delegate.EndInvoke (result);
 178                 }
 179
 180                 public virtual RequestContext ReceiveRequest ()
 181                 {
 182                         return ReceiveRequest (DefaultReceiveTimeout);
 183                 }
 184
 185                 public abstract RequestContext ReceiveRequest (TimeSpan timeout);
 186
 187                 public virtual IAsyncResult BeginReceiveRequest (AsyncCallback callback, object state)
 188                 {
 189                         return BeginReceiveRequest (DefaultReceiveTimeout, callback, state);
 190                 }
 191
 192                 Func<TimeSpan,RequestContext> recv_delegate;
 193                 public virtual IAsyncResult BeginReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 194                 {
 195                         if (recv_delegate == null)
 196                                 recv_delegate = new Func<TimeSpan,RequestContext> (ReceiveRequest);
 197                         return recv_delegate.BeginInvoke (timeout, callback, state);
 198                 }
 199
 200                 public virtual RequestContext EndReceiveRequest (IAsyncResult result)
 201                 {
 202                         if (recv_delegate == null)
 203                                 throw new InvalidOperationException ("BeginReceiveRequest operation has not started");
 204                         return recv_delegate.EndInvoke (result);
 205                 }
 206
 207                 Action<TimeSpan> open_delegate, close_delegate;
 208
 209                 protected override IAsyncResult OnBeginOpen (TimeSpan timeout,
 210                         AsyncCallback callback, object state)
 211                 {
 212                         if (open_delegate == null)
 213                                 open_delegate = new Action<TimeSpan> (OnOpen);
 214                         return open_delegate.BeginInvoke (timeout, callback, state);
 215                 }
 216
 217                 protected override void OnEndOpen (IAsyncResult result)
 218                 {
 219                         if (open_delegate == null)
 220                                 throw new InvalidOperationException ("async open operation has not started");
 221                         open_delegate.EndInvoke (result);
 222                 }
 223
 224                 protected override IAsyncResult OnBeginClose (TimeSpan timeout,
 225                         AsyncCallback callback, object state)
 226                 {
 227                         if (close_delegate == null)
 228                                 close_delegate = new Action<TimeSpan> (OnClose);
 229                         return close_delegate.BeginInvoke (timeout, callback, state);
 230                 }
 231
 232                 protected override void OnEndClose (IAsyncResult result)
 233                 {
 234                         if (close_delegate == null)
 235                                 throw new InvalidOperationException ("async close operation has not started");
 236                         close_delegate.EndInvoke (result);
 237                 }
 238         }
 239 }