ChannelFactory_1.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » C# / CSharp Open Source

//
// generic ChannelFactory_1.cs
//
// Author:
//  Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005 Novell, Inc.  http://www.novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.ObjectModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;

namespace System.ServiceModel{
  // LAMESPEC: TChannel should have been defined as "where TChannel : IClientChannel".
  // The returned channel is actually used as IClientChannel.
  // (That's also likely why the type parameter name is TChannel, not TContract.)
  public class ChannelFactory<TChannel>
    : ChannelFactory, IChannelFactory<TChannel>
  {
    public ChannelFactory ()
    {
    }

    protected ChannelFactory (Type type)
    {
      if (type == null)
        throw new ArgumentNullException ("type");
      if (!type.IsInterface)
        throw new InvalidOperationException ("The type argument to the generic ChannelFactory constructor must be an interface type.");

      InitializeEndpoint (CreateDescription ());
    }

    public ChannelFactory (string endpointConfigurationName)
    {
      if (endpointConfigurationName == null)
        throw new ArgumentNullException ("endpointConfigurationName");

      InitializeEndpoint (endpointConfigurationName, null);
    }

    public ChannelFactory (string endpointConfigurationName,
      EndpointAddress remoteAddress)
    {
      if (endpointConfigurationName == null)
        throw new ArgumentNullException ("endpointConfigurationName");

      InitializeEndpoint (endpointConfigurationName, remoteAddress);
    }

    public ChannelFactory (ServiceEndpoint endpoint)
    {
      if (endpoint == null)
        throw new ArgumentNullException ("serviceEndpoint");

      InitializeEndpoint (endpoint);
    }

    public ChannelFactory (Binding binding, string remoteAddress)
      : this (binding, new EndpointAddress (remoteAddress))
    {
    }

    public ChannelFactory (Binding binding)
      : this (binding, (EndpointAddress) null)
    {
    }

    public ChannelFactory (Binding binding, EndpointAddress remoteAddress)
      : this (typeof (TChannel))
    {
      if (binding == null)
        throw new ArgumentNullException ();

      Endpoint.Binding = binding;
      Endpoint.Address = remoteAddress;
    }

    internal object OwnerClientBase { get; set; }

    public TChannel CreateChannel ()
    {
      EnsureOpened ();

      return CreateChannel (Endpoint.Address);
    }

    public TChannel CreateChannel (EndpointAddress address)
    {
      return CreateChannel (address, null);
    }

    static TChannel CreateChannelCore (ChannelFactory<TChannel> cf, Func<ChannelFactory<TChannel>, TChannel> f)
    {
      var ch = f (cf);
      ((CommunicationObject) (object) ch).Closed += delegate { cf.Close (); };
      return ch;
    }

    public static TChannel CreateChannel (Binding binding, EndpointAddress address)
    {
      return CreateChannelCore (new ChannelFactory<TChannel> (binding, address), f => f.CreateChannel ());
    }

    public static TChannel CreateChannel (Binding binding, EndpointAddress address, Uri via)
    {
      return CreateChannelCore (new ChannelFactory<TChannel> (binding), f => f.CreateChannel (address, via));
    }

    public virtual TChannel CreateChannel (EndpointAddress address, Uri via)
    {
#if MONOTOUCH
      throw new InvalidOperationException ("MonoTouch does not support dynamic proxy code generation. Override this method or its caller to return specific client proxy instance");
#else
      var existing = Endpoint.Address;
      try {

      Endpoint.Address = address;
      EnsureOpened ();
      Endpoint.Validate ();
      Type type = ClientProxyGenerator.CreateProxyType (typeof (TChannel), Endpoint.Contract, false);
      // in .NET and SL2, it seems that the proxy is RealProxy.
      // But since there is no remoting in SL2 (and we have
      // no special magic), we have to use different approach
      // that should work either.
      object proxy = Activator.CreateInstance (type, new object [] {Endpoint, this, address ?? Endpoint.Address, via});
      return (TChannel) proxy;

      } finally {
        Endpoint.Address = existing;
      }
#endif
    }

    protected static TChannel CreateChannel (string endpointConfigurationName)
    {
      return CreateChannelCore (new ChannelFactory<TChannel> (endpointConfigurationName), f => f.CreateChannel ());
    }

    protected override ServiceEndpoint CreateDescription ()
    {
      ContractDescription cd = ContractDescription.GetContract (typeof (TChannel));
      ServiceEndpoint ep = new ServiceEndpoint (cd);
      ep.Behaviors.Add (new ClientCredentials ());
      return ep;
    }
  }

  class DummyClientBase<T> : ClientBase<T> where T : class
  {
    public DummyClientBase (ChannelFactory<T> factory)
      : base (factory)
    {
    }
  }
}