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//
// TcpRequestChannel.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2009 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.Generic;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Threading;
using System.Xml;
namespace System.ServiceModel.Channels.NetTcp
{
internal class TcpRequestChannel : RequestChannelBase
{
TcpChannelInfo info;
TcpClient client;
TcpBinaryFrameManager frame;
public TcpRequestChannel (ChannelFactoryBase factory, TcpChannelInfo info, EndpointAddress address, Uri via)
: base (factory, address, via)
{
this.info = info;
}
public MessageEncoder Encoder {
get { return info.MessageEncoder; }
}
protected override void OnAbort ()
{
OnClose (TimeSpan.Zero);
}
protected override void OnClose (TimeSpan timeout)
{
if (client != null)
client.Close ();
}
protected override void OnOpen (TimeSpan timeout)
{
CreateClient (timeout);
}
void CreateClient (TimeSpan timeout)
{
int explicitPort = Via.Port;
client = new TcpClient (Via.Host, explicitPort <= 0 ? TcpTransportBindingElement.DefaultPort : explicitPort);
NetworkStream ns = client.GetStream ();
frame = new TcpBinaryFrameManager (TcpBinaryFrameManager.SingletonUnsizedMode, ns, false) {
Encoder = this.Encoder,
Via = this.Via };
}
public override Message Request (Message input, TimeSpan timeout)
{
DateTime start = DateTime.UtcNow;
// FIXME: use timeouts.
frame.ProcessPreambleInitiator ();
frame.ProcessPreambleAckInitiator ();
if (input.Headers.To == null)
input.Headers.To = RemoteAddress.Uri;
if (input.Headers.MessageId == null)
input.Headers.MessageId = new UniqueId ();
Logger.LogMessage (MessageLogSourceKind.TransportSend, ref input, int.MaxValue); // It is not a receive buffer
frame.WriteUnsizedMessage (input, timeout - (DateTime.UtcNow - start));
// LAMESPEC: it contradicts the protocol described at section 3.1.1.1.1 in [MC-NMF].
// Moving this WriteEndRecord() after ReadUnsizedMessage() causes TCP connection blocking.
frame.WriteEndRecord ();
var ret = frame.ReadUnsizedMessage (timeout - (DateTime.UtcNow - start));
Logger.LogMessage (MessageLogSourceKind.TransportReceive, ref ret, info.BindingElement.MaxReceivedMessageSize);
frame.ReadEndRecord (); // both
return ret;
}
}
}
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