class/System.ServiceModel/System.ServiceModel/ChannelFactory_1.cs

   1 //
   2 // generic ChannelFactory_1.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.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 using System;
  29 using System.Collections.ObjectModel;
  30 using System.ServiceModel.Channels;
  31 using System.ServiceModel.Description;
  32 using System.ServiceModel.Dispatcher;
  33
  34 namespace System.ServiceModel
  35 {
  36         // LAMESPEC: TChannel should have been defined as "where TChannel : IClientChannel".
  37         // The returned channel is actually used as IClientChannel.
  38         // (That's also likely why the type parameter name is TChannel, not TContract.)
  39         public class ChannelFactory<TChannel>
  40                 : ChannelFactory, IChannelFactory<TChannel>
  41         {
  42                 public ChannelFactory ()
  43                 {
  44                 }
  45
  46                 protected ChannelFactory (Type type)
  47                 {
  48                         if (type == null)
  49                                 throw new ArgumentNullException ("type");
  50                         if (!type.IsInterface)
  51                                 throw new InvalidOperationException ("The type argument to the generic ChannelFactory constructor must be an interface type.");
  52
  53                         InitializeEndpoint (CreateDescription ());
  54                 }
  55
  56                 public ChannelFactory (string endpointConfigurationName)
  57                 {
  58                         if (endpointConfigurationName == null)
  59                                 throw new ArgumentNullException ("endpointConfigurationName");
  60
  61                         InitializeEndpoint (endpointConfigurationName, null);
  62                 }
  63
  64                 public ChannelFactory (string endpointConfigurationName,
  65                         EndpointAddress remoteAddress)
  66                 {
  67                         if (endpointConfigurationName == null)
  68                                 throw new ArgumentNullException ("endpointConfigurationName");
  69
  70                         InitializeEndpoint (endpointConfigurationName, remoteAddress);
  71                 }
  72
  73                 public ChannelFactory (ServiceEndpoint endpoint)
  74                 {
  75                         if (endpoint == null)
  76                                 throw new ArgumentNullException ("serviceEndpoint");
  77
  78                         InitializeEndpoint (endpoint);
  79                 }
  80
  81                 public ChannelFactory (Binding binding, string remoteAddress)
  82                         : this (binding, new EndpointAddress (remoteAddress))
  83                 {
  84                 }
  85
  86                 public ChannelFactory (Binding binding)
  87                         : this (binding, (EndpointAddress) null)
  88                 {
  89                 }
  90
  91                 public ChannelFactory (Binding binding, EndpointAddress remoteAddress)
  92                         : this (typeof (TChannel))
  93                 {
  94                         if (binding == null)
  95                                 throw new ArgumentNullException ();
  96
  97                         Endpoint.Binding = binding;
  98                         Endpoint.Address = remoteAddress;
  99                 }
 100
 101                 internal object OwnerClientBase { get; set; }
 102
 103                 public TChannel CreateChannel ()
 104                 {
 105                         EnsureOpened ();
 106
 107                         return CreateChannel (Endpoint.Address);
 108                 }
 109
 110                 public TChannel CreateChannel (EndpointAddress address)
 111                 {
 112                         return CreateChannel (address, null);
 113                 }
 114
 115                 static TChannel CreateChannelCore (ChannelFactory<TChannel> cf, Func<ChannelFactory<TChannel>, TChannel> f)
 116                 {
 117                         var ch = f (cf);
 118                         ((CommunicationObject) (object) ch).Closed += delegate { cf.Close (); };
 119                         return ch;
 120                 }
 121
 122                 public static TChannel CreateChannel (Binding binding, EndpointAddress address)
 123                 {
 124                         return CreateChannelCore (new ChannelFactory<TChannel> (binding, address), f => f.CreateChannel ());
 125                 }
 126
 127                 public static TChannel CreateChannel (Binding binding, EndpointAddress address, Uri via)
 128                 {
 129                         return CreateChannelCore (new ChannelFactory<TChannel> (binding), f => f.CreateChannel (address, via));
 130                 }
 131
 132                 public virtual TChannel CreateChannel (EndpointAddress address, Uri via)
 133                 {
 134 #if MONOTOUCH
 135                         throw new InvalidOperationException ("MonoTouch does not support dynamic proxy code generation. Override this method or its caller to return specific client proxy instance");
 136 #else
 137                         var existing = Endpoint.Address;
 138                         try {
 139
 140                         Endpoint.Address = address;
 141                         EnsureOpened ();
 142                         Endpoint.Validate ();
 143                         Type type = ClientProxyGenerator.CreateProxyType (typeof (TChannel), Endpoint.Contract, false);
 144                         // in .NET and SL2, it seems that the proxy is RealProxy.
 145                         // But since there is no remoting in SL2 (and we have
 146                         // no special magic), we have to use different approach
 147                         // that should work either.
 148                         object proxy = Activator.CreateInstance (type, new object [] {Endpoint, this, address ?? Endpoint.Address, via});
 149                         return (TChannel) proxy;
 150
 151                         } finally {
 152                                 Endpoint.Address = existing;
 153                         }
 154 #endif
 155                 }
 156
 157                 protected static TChannel CreateChannel (string endpointConfigurationName)
 158                 {
 159                         return CreateChannelCore (new ChannelFactory<TChannel> (endpointConfigurationName), f => f.CreateChannel ());
 160                 }
 161
 162                 protected override ServiceEndpoint CreateDescription ()
 163                 {
 164                         ContractDescription cd = ContractDescription.GetContract (typeof (TChannel));
 165                         ServiceEndpoint ep = new ServiceEndpoint (cd);
 166                         ep.Behaviors.Add (new ClientCredentials ());
 167                         return ep;
 168                 }
 169         }
 170
 171         class DummyClientBase<T> : ClientBase<T> where T : class
 172         {
 173                 public DummyClientBase (ChannelFactory<T> factory)
 174                         : base (factory)
 175                 {
 176                 }
 177         }
 178 }