linux-packaging-mono/mcs/class/Mono.Posix/Mono.Remoting.Channels.Unix/UnixClientChannel.cs

//
// Mono.Remoting.Channels.Unix.UnixClientChannel.cs
//
// Author: Dietmar Maurer (dietmar@ximian.com)
//     Lluis Sanchez Gual (lluis@novell.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;
using System.IO;
using System.Net.Sockets;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Remoting.Channels;
using System.Threading;

namespace Mono.Remoting.Channels.Unix
{
    public class UnixClientChannel : IChannelSender, IChannel
    {
        int priority = 1;                    
        string name = "unix";
        IClientChannelSinkProvider _sinkProvider;
        
        public UnixClientChannel ()
        {
            _sinkProvider = new UnixBinaryClientFormatterSinkProvider ();
            _sinkProvider.Next = new UnixClientTransportSinkProvider ();
        }

        public UnixClientChannel (IDictionary properties, IClientChannelSinkProvider sinkProvider)
        {
            object val = properties ["name"];
            if (val != null) name = val as string;
            
            val = properties ["priority"];
            if (val != null) priority = Convert.ToInt32 (val);
            
            if (sinkProvider != null)
            {
                _sinkProvider = sinkProvider;

                // add the unix provider at the end of the chain
                IClientChannelSinkProvider prov = sinkProvider;
                while (prov.Next != null) prov = prov.Next;
                prov.Next = new UnixClientTransportSinkProvider ();

                // Note: a default formatter is added only when
                // no sink providers are specified in the config file.
            }
            else
            {
                _sinkProvider = new UnixBinaryClientFormatterSinkProvider ();
                _sinkProvider.Next = new UnixClientTransportSinkProvider ();
            }

        }

        public UnixClientChannel (string name, IClientChannelSinkProvider sinkProvider)
        {
            this.name = name;
            _sinkProvider = sinkProvider;

            // add the unix provider at the end of the chain
            IClientChannelSinkProvider prov = sinkProvider;
            while (prov.Next != null) prov = prov.Next;
            prov.Next = new UnixClientTransportSinkProvider ();
        }
        
        public string ChannelName
        {
            get {
                return name;
            }
        }

        public int ChannelPriority
        {
            get {
                return priority;
            }
        }

        public IMessageSink CreateMessageSink (string url,
                                               object remoteChannelData,
                                               out string objectURI)
        {
            if (url != null && Parse (url, out objectURI) != null)
                return (IMessageSink) _sinkProvider.CreateSink (this, url, remoteChannelData);
                                                                                
            if (remoteChannelData != null) {
                IChannelDataStore ds = remoteChannelData as IChannelDataStore;
                if (ds != null && ds.ChannelUris.Length > 0)
                    url = ds.ChannelUris [0];
                else {
                    objectURI = null;
                    return null;
                }
            }
            
            if (Parse (url, out objectURI) == null)
                return null;

            return (IMessageSink) _sinkProvider.CreateSink (this, url, remoteChannelData);
        }

        public string Parse (string url, out string objectURI)
        {
            return UnixChannel.ParseUnixURL (url, out objectURI);
        }
    }
}