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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
using System;
using System.IO;
using System.Net.Sockets;
using org.apache.qpid.transport.util;
namespace org.apache.qpid.transport.network.io
{
/// <summary>
/// This class provides a socket based transport using sync io classes.
///
/// The following params are configurable via JVM arguments
/// TCP_NO_DELAY - qpid.tcpNoDelay
/// SO_RCVBUF - qpid.readBufferSize
/// SO_SNDBUF - qpid.writeBufferSize
/// </summary>
public sealed class IoTransport : IIoTransport
{
// constants
private const int DEFAULT_READ_WRITE_BUFFER_SIZE = 64*1024;
private const int TIMEOUT = 60000;
private const int QUEUE_SIZE = 1000;
// props
private static readonly Logger log = Logger.Get(typeof (IoTransport));
private Stream m_stream;
private IoSender m_sender;
private IReceiver<ReceivedPayload<MemoryStream>> m_receiver;
private TcpClient m_socket;
private Connection m_con;
public static Connection Connect(String host, int port, ConnectionDelegate conndel)
{
IoTransport transport = new IoTransport(host, port, conndel);
return transport.Connection;
}
public IoTransport(String host, int port, ConnectionDelegate conndel)
{
CreateSocket(host, port);
Sender = new IoSender(this, QUEUE_SIZE, TIMEOUT);
Receiver = new IoReceiver(Stream, Socket.ReceiveBufferSize * 2, TIMEOUT);
Assembler assembler = new Assembler();
InputHandler inputHandler = new InputHandler(InputHandler.State.PROTO_HDR);
Connection = new Connection(assembler, new Disassembler(Sender, 64 * 1024 - 1), conndel);
// Input handler listen to Receiver events
Receiver.Received += inputHandler.On_ReceivedBuffer;
// Assembler listen to inputhandler events
inputHandler.ReceivedEvent += assembler.On_ReceivedEvent;
// Connection listen to asembler protocol event
Receiver.Closed += Connection.On_ReceivedClosed;
assembler.Closed += Connection.On_ReceivedClosed;
Receiver.Exception += Connection.On_ReceivedException;
inputHandler.ExceptionProcessing += Connection.On_ReceivedException;
assembler.ReceivedEvent += Connection.On_ReceivedEvent;
}
public Connection Connection
{
get { return m_con; }
set { m_con = value; }
}
public IReceiver<ReceivedPayload<MemoryStream>> Receiver
{
get { return m_receiver; }
set { m_receiver = value; }
}
public IoSender Sender
{
get { return m_sender; }
set { m_sender = value; }
}
public Stream Stream
{
get { return m_stream; }
set { m_stream = value; }
}
public TcpClient Socket
{
get { return m_socket; }
set { m_socket = value; }
}
#region Private Support Functions
private void CreateSocket(String host, int port)
{
try
{
TcpClient socket = new TcpClient();
String noDelay = Environment.GetEnvironmentVariable("qpid.tcpNoDelay");
String writeBufferSize = Environment.GetEnvironmentVariable("qpid.writeBufferSize");
String readBufferSize = Environment.GetEnvironmentVariable("qpid.readBufferSize");
socket.NoDelay = noDelay != null && bool.Parse(noDelay);
socket.ReceiveBufferSize = readBufferSize == null ? DEFAULT_READ_WRITE_BUFFER_SIZE : int.Parse(readBufferSize);
socket.SendBufferSize = writeBufferSize == null ? DEFAULT_READ_WRITE_BUFFER_SIZE : int.Parse(writeBufferSize);
log.Debug("NoDelay : {0}", socket.NoDelay);
log.Debug("ReceiveBufferSize : {0}", socket.ReceiveBufferSize);
log.Debug("SendBufferSize : {0}", socket.SendBufferSize);
log.Debug("Openning connection with host : {0}; port: {1}", host, port);
socket.Connect(host, port);
Socket = socket;
Stream = socket.GetStream();
}
catch (SocketException e)
{
Console.WriteLine(e.StackTrace);
throw new TransportException("Error connecting to broker", e);
}
catch (IOException e)
{
throw new TransportException("Error connecting to broker", e);
}
}
#endregion
}
}
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