CombinedTcpChannel.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / ManagedLibraries / Remoting / Channels / TCP / CombinedTcpChannel.cs / 1305376 / CombinedTcpChannel.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
//==========================================================================
//  File:       CombinedTcpChannel.cs 
// 
//  Summary:    Merges the client and server TCP channels
// 
//  Classes:    public TcpChannel
//
//=========================================================================
 
using System;
using System.Collections; 
using System.Runtime.Remoting; 
using System.Runtime.Remoting.Messaging;
using System.Globalization; 
using System.Security.Permissions;


namespace System.Runtime.Remoting.Channels.Tcp 
{
 
    public class TcpChannel : IChannelReceiver, IChannelSender, ISecurableChannel 
    {
        private TcpClientChannel  _clientChannel = null; // client channel 
        private TcpServerChannel  _serverChannel = null; // server channel

        private int    _channelPriority = 1;  // channel priority
        private String _channelName = "tcp"; // channel name 

 
        public TcpChannel() 
        {
            _clientChannel = new TcpClientChannel(); 
            // server channel will not be activated.
        } // TcpChannel

        public TcpChannel(int port) : this() 
        {
            _serverChannel = new TcpServerChannel(port); 
        } // TcpChannel 

        public TcpChannel(IDictionary properties, 
                          IClientChannelSinkProvider clientSinkProvider,
                          IServerChannelSinkProvider serverSinkProvider)
        {
            Hashtable clientData = new Hashtable(); 
            Hashtable serverData = new Hashtable();
 
            bool portFound = false; 

            // divide properties up for respective channels 
            if (properties != null)
            {
                foreach (DictionaryEntry entry in properties)
                { 
                    switch ((String)entry.Key)
                    { 
                    // general channel properties 
                    case "name": _channelName = (String)entry.Value; break;
                    case "priority": _channelPriority = Convert.ToInt32((String)entry.Value, CultureInfo.InvariantCulture); break; 
                    case "port":
                    {
                        serverData["port"] = entry.Value;
                        portFound = true; 
                        break;
                    } 
 
                    default:
                            clientData[entry.Key] = entry.Value; 
                            serverData[entry.Key] = entry.Value;
                            break;
                    }
                } 
            }
 
            _clientChannel = new TcpClientChannel(clientData, clientSinkProvider); 

            if (portFound) 
                _serverChannel = new TcpServerChannel(serverData, serverSinkProvider);
        } // TcpChannel

        // 
        // ISecurableChannel implementation
        // 
        public bool IsSecured 
        {
            [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
            get {
                if (_clientChannel != null)
                    return _clientChannel.IsSecured;
                if (_serverChannel != null) 
                    return _serverChannel.IsSecured;
                return false; 
            } 
            [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)]
            set { 
                if (((IList)ChannelServices.RegisteredChannels).Contains(this))
                    throw new InvalidOperationException(CoreChannel.GetResourceString("Remoting_InvalidOperation_IsSecuredCannotBeChangedOnRegisteredChannels"));
                if (_clientChannel != null)
                    _clientChannel.IsSecured = value; 
                if (_serverChannel != null)
                    _serverChannel.IsSecured = value; 
            } 
        }
 
        //
        // IChannel implementation
        //
 
        public int ChannelPriority
        { 
            [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
            get { return _channelPriority; }
        } // ChannelPriority 

        public String ChannelName
        {
            [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
            get { return _channelName; }
        } // ChannelName 
 
        // returns channelURI and places object uri into out parameter
        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
        public String Parse(String url, out String objectURI)
        {
            return TcpChannelHelper.ParseURL(url, out objectURI);
        } // Parse 

        // 
        // end of IChannel implementation 
        //
 

        //
        // IChannelSender implementation
        // 

        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
        public IMessageSink CreateMessageSink(String url, Object remoteChannelData, 
                                                      out String objectURI)
        { 
            return _clientChannel.CreateMessageSink(url, remoteChannelData, out objectURI);
        } // CreateMessageSink

        // 
        // end of IChannelSender implementation
        // 
 

        // 
        // IChannelReceiver implementation
        //

        public Object ChannelData 
        {
            [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
            get 
            {
                if (_serverChannel != null) 
                    return _serverChannel.ChannelData;
                else
                    return null;
            } 
        } // ChannelData
 
 
        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)]
        public String[] GetUrlsForUri(String objectURI) 
        {
            if (_serverChannel != null)
                return _serverChannel.GetUrlsForUri(objectURI);
            else 
                return null;
        } // GetUrlsforURI 
 

        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)] 
        public void StartListening(Object data)
        {
            if (_serverChannel != null)
                _serverChannel.StartListening(data); 
        } // StartListening
 
 
        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure, Infrastructure=true)]
        public void StopListening(Object data) 
        {
            if (_serverChannel != null)
                _serverChannel.StopListening(data);
        } // StopListening 

        // 
        // IChannelReceiver implementation 
        //
 

    } // class TcpChannel

 
} // namespace System.Runtime.Remoting.Channels.Tcp
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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CombinedTcpChannel.cs source code in C# .NET

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