Merge pull request #757 from mlintner/master
[mono.git] / mcs / class / System.Net.Http / System.Net.Http / DelegatingHandler.cs
1 //
2 // DelegatingHandler.cs
3 //
4 // Authors:
5 //      Marek Safar  <marek.safar@gmail.com>
6 //
7 // Copyright (C) 2011 Xamarin Inc (http://www.xamarin.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
29 using System.Threading;
30 using System.Threading.Tasks;
31
32 namespace System.Net.Http
33 {
34         public abstract class DelegatingHandler : HttpMessageHandler
35         {
36                 bool disposed;
37                 HttpMessageHandler handler;
38                 
39                 protected DelegatingHandler ()
40                 {
41                 }
42                 
43                 protected DelegatingHandler(HttpMessageHandler innerHandler)
44                 {
45                         if (innerHandler == null)
46                                 throw new ArgumentNullException ("innerHandler");
47                         
48                         InnerHandler = innerHandler;
49                 }
50                 
51                 public HttpMessageHandler InnerHandler {
52                         get {
53                                 return handler;
54                         }
55                         set {
56                                 if (value == null)
57                                         throw new ArgumentNullException ("InnerHandler");
58
59                                 handler = value;
60                         }
61                 }
62                 
63                 protected override void Dispose (bool disposing)
64                 {
65                         if (disposing && !disposed) {
66                                 disposed = true;
67                                 if (InnerHandler != null)
68                                         InnerHandler.Dispose ();
69                         }
70                         
71                         base.Dispose (disposing);
72                 }
73
74                 protected internal override Task<HttpResponseMessage> SendAsync (HttpRequestMessage request, CancellationToken cancellationToken)
75                 {
76                         return InnerHandler.SendAsync (request, cancellationToken);
77                 }
78         }
79 }