mcs/class/System/System.Net/HttpStreamAsyncResult.cs

   1 //
   2 // System.Net.HttpStreamAsyncResult
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   6 //
   7 // Copyright (C) 2005 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 #if NET_2_0
  29 using System.Threading;
  30
  31 namespace System.Net {
  32         class HttpStreamAsyncResult : IAsyncResult {
  33                 object locker = new object ();
  34                 ManualResetEvent handle;
  35                 bool completed;
  36
  37                 internal byte [] Buffer;
  38                 internal int Offset;
  39                 internal int Count;
  40                 internal AsyncCallback Callback;
  41                 internal object State;
  42                 internal int SynchRead;
  43                 internal Exception Error;
  44
  45                 public void Complete (Exception e)
  46                 {
  47                         Error = e;
  48                         Complete ();
  49                 }
  50
  51                 public void Complete ()
  52                 {
  53                         lock (locker) {
  54                                 if (completed)
  55                                         return;
  56
  57                                 completed = true;
  58                                 if (handle != null)
  59                                         handle.Set ();
  60
  61                                 if (Callback != null)
  62                                         Callback.BeginInvoke (this, null, null);
  63                         }
  64                 }
  65
  66                 public object AsyncState {
  67                         get { return State; }
  68                 }
  69
  70                 public WaitHandle AsyncWaitHandle {
  71                         get {
  72                                 lock (locker) {
  73                                         if (handle == null)
  74                                                 handle = new ManualResetEvent (completed);
  75                                 }
  76
  77                                 return handle;
  78                         }
  79                 }
  80
  81                 public bool CompletedSynchronously {
  82                         get { return (SynchRead == Count); }
  83                 }
  84
  85                 public bool IsCompleted {
  86                         get {
  87                                 lock (locker) {
  88                                         return completed;
  89                                 }
  90                         }
  91                 }
  92         }
  93 }
  94 #endif
  95