//
// Copyright (c) 2004,2005 Jaroslaw Kowalski <jkowalski@users.sourceforge.net>
//
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * Neither the name of the Jaroslaw Kowalski nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace NLog.Internal
{
/// <summary>
/// Sends messages over a TCP network connection.
/// </summary>
public class TcpNetworkSender : NetworkSender
{
private Socket _socket;
private Encoding _encoding;
/// <summary>
/// Creates a new instance of <see cref="TcpNetworkSender"/> and initializes
/// it with the specified URL. Connects to the server specified in the URL.
/// </summary>
/// <param name="url">URL. Must start with tcp://</param>
public TcpNetworkSender(string url) : base(url)
{
// tcp://hostname:port
Uri parsedUri = new Uri(url);
IPHostEntry host = Dns.GetHostByName(parsedUri.Host);
int port = parsedUri.Port;
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_socket.Connect(new IPEndPoint(host.AddressList[0], port));
_encoding = Encoding.UTF8;
}
/// <summary>
/// Sends the specified text over the connected socket.
/// </summary>
/// <param name="text"></param>
protected override void DoSend(string text)
{
lock (this)
{
byte[] bytes = _encoding.GetBytes(text);
_socket.Send(bytes);
}
}
/// <summary>
/// Closes the socket.
/// </summary>
public override void Close()
{
lock (this)
{
try
{
_socket.Close();
}
catch (Exception)
{
// ignore errors
}
_socket = null;
}
}
}
}